BugReporter.cpp revision 0eb6c37dd4e4ad8fa2363003dea270f9fd6c2969
161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// BugReporter.cpp - Generate PathDiagnostics for Bugs ------------*- C++ -*--// 261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// 361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// The LLVM Compiler Infrastructure 461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// 561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// This file is distributed under the University of Illinois Open Source 661f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// License. See LICENSE.TXT for details. 761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// 861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek//===----------------------------------------------------------------------===// 961f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// 1061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// This file defines BugReporter, a utility class for generating 116c07bdba93b095b66e2c8c82dd5ed458fa8285eaTed Kremenek// PathDiagnostics. 1261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek// 1361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek//===----------------------------------------------------------------------===// 1461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 159b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h" 169b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 179b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h" 1861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek#include "clang/AST/ASTContext.h" 19e41611aa2237d06a0ef61db4528fb2883a8defcdTed Kremenek#include "clang/Analysis/CFG.h" 20c35fb7d67d515659ad2325b4f6ec97c9fe64fb63Benjamin Kramer#include "clang/AST/DeclObjC.h" 2161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek#include "clang/AST/Expr.h" 2200605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek#include "clang/AST/ParentMap.h" 2316f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 2416f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/Basic/SourceManager.h" 2561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek#include "clang/Analysis/ProgramPoint.h" 269b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h" 27405674c26c52b05df0d833fae6bae818cd52bc32Chris Lattner#include "llvm/Support/raw_ostream.h" 28331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek#include "llvm/ADT/DenseMap.h" 298fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer#include "llvm/ADT/SmallString.h" 30cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek#include "llvm/ADT/STLExtras.h" 3100605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 32802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek#include "llvm/ADT/IntrusiveRefCntPtr.h" 3310aa55410bbecbb658ce14a5f801d50cf06d12dfTed Kremenek#include <queue> 3461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 3561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenekusing namespace clang; 369ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 3761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 388966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed KremenekBugReporterVisitor::~BugReporterVisitor() {} 391b431023814196f87515a540ebcb9e9f1a9176a1Ted Kremenek 4099ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid BugReporterContext::anchor() {} 4199ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 42cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 433106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Helper routines for walking the ExplodedGraph and fetching statements. 44cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 4561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 469c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline const Stmt *GetStmt(const ProgramPoint &P) { 47592362b46ad69db0db0988e7f9d8cbe647510bddTed Kremenek if (const StmtPoint* SP = dyn_cast<StmtPoint>(&P)) 48592362b46ad69db0db0988e7f9d8cbe647510bddTed Kremenek return SP->getStmt(); 499c378f705405d37f49795d5e915989de774fe11fTed Kremenek else if (const BlockEdge *BE = dyn_cast<BlockEdge>(&P)) 5061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek return BE->getSrc()->getTerminator(); 51852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose else if (const CallEnter *CE = dyn_cast<CallEnter>(&P)) 52852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose return CE->getCallExpr(); 53852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose else if (const CallExitEnd *CEE = dyn_cast<CallExitEnd>(&P)) 54852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose return CEE->getCalleeContext()->getCallSite(); 551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 56b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 5761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 5861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 59c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xustatic inline const ExplodedNode* 609c378f705405d37f49795d5e915989de774fe11fTed KremenekGetPredecessorNode(const ExplodedNode *N) { 61b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return N->pred_empty() ? NULL : *(N->pred_begin()); 62706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek} 63706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek 64c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xustatic inline const ExplodedNode* 659c378f705405d37f49795d5e915989de774fe11fTed KremenekGetSuccessorNode(const ExplodedNode *N) { 66b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return N->succ_empty() ? NULL : *(N->succ_begin()); 67bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek} 682673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek 699c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic const Stmt *GetPreviousStmt(const ExplodedNode *N) { 70b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek for (N = GetPredecessorNode(N); N; N = GetPredecessorNode(N)) 715f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 72b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 75b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek} 76b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek 779c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic const Stmt *GetNextStmt(const ExplodedNode *N) { 78b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek for (N = GetSuccessorNode(N); N; N = GetSuccessorNode(N)) 795f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) { 80f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek // Check if the statement is '?' or '&&'/'||'. These are "merges", 81f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek // not actual statement points. 82f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek switch (S->getStmtClass()) { 83f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::ChooseExprClass: 8456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: continue; 85f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::ConditionalOperatorClass: continue; 86f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::BinaryOperatorClass: { 872de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall BinaryOperatorKind Op = cast<BinaryOperator>(S)->getOpcode(); 882de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (Op == BO_LAnd || Op == BO_LOr) 89f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek continue; 90f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek break; 91f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 92f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek default: 93f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek break; 94f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 95b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 96f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 99bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek} 100bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek 1015f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenekstatic inline const Stmt* 1029c378f705405d37f49795d5e915989de774fe11fTed KremenekGetCurrentOrPreviousStmt(const ExplodedNode *N) { 1035f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 104b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return GetPreviousStmt(N); 107b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek} 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1095f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenekstatic inline const Stmt* 1109c378f705405d37f49795d5e915989de774fe11fTed KremenekGetCurrentOrNextStmt(const ExplodedNode *N) { 1115f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 112b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 114b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return GetNextStmt(N); 1153148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek} 1163148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek 117b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek//===----------------------------------------------------------------------===// 118c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek// Diagnostic cleanup. 119c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek//===----------------------------------------------------------------------===// 120c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 121c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// Recursively scan through a path and prune out calls and macros pieces 122c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// that aren't needed. Return true if afterwards the path contains 123c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// "interesting stuff" which means it should be pruned from the parent path. 124c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenekstatic bool RemoveUneededCalls(PathPieces &pieces) { 125c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek bool containsSomethingInteresting = false; 126c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek const unsigned N = pieces.size(); 127c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 128c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek for (unsigned i = 0 ; i < N ; ++i) { 129c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // Remove the front piece from the path. If it is still something we 130c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // want to keep once we are done, we will push it back on the end. 131c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek IntrusiveRefCntPtr<PathDiagnosticPiece> piece(pieces.front()); 132c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek pieces.pop_front(); 133c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 134725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek switch (piece->getKind()) { 135725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Call: { 136725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticCallPiece *call = cast<PathDiagnosticCallPiece>(piece); 137725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // Recursively clean out the subclass. Keep this call around if 138725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // it contains any informative diagnostics. 139725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek if (!RemoveUneededCalls(call->path)) 140725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek continue; 141725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek containsSomethingInteresting = true; 142725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 143725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 144725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Macro: { 145725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticMacroPiece *macro = cast<PathDiagnosticMacroPiece>(piece); 146725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek if (!RemoveUneededCalls(macro->subPieces)) 147725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek continue; 148c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek containsSomethingInteresting = true; 149725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 150725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 151725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Event: { 152725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticEventPiece *event = cast<PathDiagnosticEventPiece>(piece); 153725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // We never throw away an event, but we do throw it away wholesale 154725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // as part of a path if we throw the entire path away. 15576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (event->isPrunable()) 15676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek continue; 15776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek containsSomethingInteresting = true; 158725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 159725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 160725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::ControlFlow: 161725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 162c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek } 163c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 164c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek pieces.push_back(piece); 165c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek } 166c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 167c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek return containsSomethingInteresting; 168c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek} 169c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 170c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek//===----------------------------------------------------------------------===// 1713106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// PathDiagnosticBuilder and its associated routines and helper objects. 172b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek//===----------------------------------------------------------------------===// 173b479dadea93b93d3f0a335c3518b703f140b3f50Ted Kremenek 174c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xutypedef llvm::DenseMap<const ExplodedNode*, 175c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xuconst ExplodedNode*> NodeBackMap; 1767dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek 177babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremeneknamespace { 178ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass NodeMapClosure : public BugReport::NodeResolver { 1797dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeBackMap& M; 1807dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenekpublic: 1817dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeMapClosure(NodeBackMap *m) : M(*m) {} 1827dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek ~NodeMapClosure() {} 1831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1849c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *getOriginalNode(const ExplodedNode *N) { 1857dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeBackMap::iterator I = M.find(N); 1867dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek return I == M.end() ? 0 : I->second; 1877dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 1887dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek}; 1891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 190ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass PathDiagnosticBuilder : public BugReporterContext { 1917dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek BugReport *R; 192ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer *PDC; 1936f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ParentMap> PM; 1947dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeMapClosure NMC; 1951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 19659950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek const LocationContext *LC; 19759950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek 1988966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek PathDiagnosticBuilder(GRBugReporter &br, 1991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump BugReport *r, NodeBackMap *Backmap, 200ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer *pdc) 2018966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek : BugReporterContext(br), 20259950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek R(r), PDC(pdc), NMC(Backmap), LC(r->getErrorNode()->getLocationContext()) 20359950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek {} 2041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2059c378f705405d37f49795d5e915989de774fe11fTed Kremenek PathDiagnosticLocation ExecutionContinues(const ExplodedNode *N); 2061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2079c378f705405d37f49795d5e915989de774fe11fTed Kremenek PathDiagnosticLocation ExecutionContinues(llvm::raw_string_ostream &os, 2089c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N); 2091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2108e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *getBugReport() { return R; } 2118e6431adab313e283a992698f6fc7afe62420999Anna Zaks 212212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care Decl const &getCodeDecl() { return R->getErrorNode()->getCodeDecl(); } 21359950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek 21459950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek ParentMap& getParentMap() { return LC->getParentMap(); } 2151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 216c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek const Stmt *getParent(const Stmt *S) { 217c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek return getParentMap().getParent(S); 218c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek } 2191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2208966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek virtual NodeMapClosure& getNodeResolver() { return NMC; } 2217297134f128423fce2e88f92421ed135bded7d4eDouglas Gregor 222d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek PathDiagnosticLocation getEnclosingStmtLocation(const Stmt *S); 2231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 224ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer::PathGenerationScheme getGenerationScheme() const { 225ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie return PDC ? PDC->getGenerationScheme() : PathDiagnosticConsumer::Extensive; 2267dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 2277dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek 228babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek bool supportsLogicalOpControlFlow() const { 229babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek return PDC ? PDC->supportsLogicalOpControlFlow() : true; 2301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 231babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek}; 232babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek} // end anonymous namespace 233babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek 23400605e0f011ed99225a22026344c5fc1b3212cd7Ted KremenekPathDiagnosticLocation 2359c378f705405d37f49795d5e915989de774fe11fTed KremenekPathDiagnosticBuilder::ExecutionContinues(const ExplodedNode *N) { 2365f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetNextStmt(N)) 23759950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek return PathDiagnosticLocation(S, getSourceManager(), LC); 23800605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek 2390cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks return PathDiagnosticLocation::createDeclEnd(N->getLocationContext(), 2400cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks getSourceManager()); 241082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek} 2421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24300605e0f011ed99225a22026344c5fc1b3212cd7Ted KremenekPathDiagnosticLocation 2449c378f705405d37f49795d5e915989de774fe11fTed KremenekPathDiagnosticBuilder::ExecutionContinues(llvm::raw_string_ostream &os, 2459c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N) { 246babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek 247143ca222583a4a355fdc89af852deef287499300Ted Kremenek // Slow, but probably doesn't matter. 248b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek if (os.str().empty()) 249b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek os << ' '; 2501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25100605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek const PathDiagnosticLocation &Loc = ExecutionContinues(N); 2521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25300605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek if (Loc.asStmt()) 254b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek os << "Execution continues on line " 255642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << getSourceManager().getExpansionLineNumber(Loc.asLocation()) 2568966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek << '.'; 2574f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else { 2584f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "Execution jumps to the end of the "; 2594f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek const Decl *D = N->getLocationContext()->getDecl(); 2604f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek if (isa<ObjCMethodDecl>(D)) 2614f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "method"; 2624f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else if (isa<FunctionDecl>(D)) 2634f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "function"; 2644f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else { 2654f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek assert(isa<BlockDecl>(D)); 2664f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "anonymous block"; 2674f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek } 2684f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << '.'; 2694f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek } 2701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 271082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek return Loc; 272143ca222583a4a355fdc89af852deef287499300Ted Kremenek} 273143ca222583a4a355fdc89af852deef287499300Ted Kremenek 274ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenekstatic bool IsNested(const Stmt *S, ParentMap &PM) { 275ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (isa<Expr>(S) && PM.isConsumedExpr(cast<Expr>(S))) 276ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek return true; 2771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 278ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek const Stmt *Parent = PM.getParentIgnoreParens(S); 2791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 280ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (Parent) 281ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek switch (Parent->getStmtClass()) { 282ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::ForStmtClass: 283ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::DoStmtClass: 284ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::WhileStmtClass: 285ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek return true; 286ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek default: 287ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek break; 288ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek } 2891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return false; 291ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek} 292ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek 293d8c938b0f6b7a7156181be575239e4c6e15a2adbTed KremenekPathDiagnosticLocation 294d8c938b0f6b7a7156181be575239e4c6e15a2adbTed KremenekPathDiagnosticBuilder::getEnclosingStmtLocation(const Stmt *S) { 2959c378f705405d37f49795d5e915989de774fe11fTed Kremenek assert(S && "Null Stmt *passed to getEnclosingStmtLocation"); 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ParentMap &P = getParentMap(); 2978966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek SourceManager &SMgr = getSourceManager(); 298e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 299ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek while (IsNested(S, P)) { 3008c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const Stmt *Parent = P.getParentIgnoreParens(S); 3011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 302af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (!Parent) 303af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 3041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 305af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek switch (Parent->getStmtClass()) { 3065fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek case Stmt::BinaryOperatorClass: { 3075fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek const BinaryOperator *B = cast<BinaryOperator>(Parent); 3085fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (B->isLogicalOp()) 309220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3105fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek break; 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 312af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::CompoundStmtClass: 313af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::StmtExprClass: 314220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3151d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek case Stmt::ChooseExprClass: 3161d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // Similar to '?' if we are referring to condition, just have the edge 3171d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // point to the entire choose expression. 3181d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek if (cast<ChooseExpr>(Parent)->getCond() == S) 319220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 3201d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek else 321220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 32256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 3231d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek case Stmt::ConditionalOperatorClass: 3241d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // For '?', if we are referring to condition, just have the edge point 3251d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // to the entire '?' expression. 32656ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (cast<AbstractConditionalOperator>(Parent)->getCond() == S) 327220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 3281d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek else 329220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 330af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::DoStmtClass: 331220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 332af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::ForStmtClass: 333af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<ForStmt>(Parent)->getBody() == S) 334220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump break; 336af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::IfStmtClass: 337af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<IfStmt>(Parent)->getCond() != S) 338220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3398bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek break; 340af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 341af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<ObjCForCollectionStmt>(Parent)->getBody() == S) 342220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 343af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 344af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::WhileStmtClass: 345af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<WhileStmt>(Parent)->getCond() != S) 346220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 347af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 348af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek default: 349af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 350af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek } 351af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek 352d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek S = Parent; 353d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek } 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 355d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek assert(S && "Cannot have null Stmt for PathDiagnosticLocation"); 356e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 357e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // Special case: DeclStmts can appear in for statement declarations, in which 358e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // case the ForStmt is the context. 359e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (isa<DeclStmt>(S)) { 360e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (const Stmt *Parent = P.getParent(S)) { 361e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek switch (Parent->getStmtClass()) { 362e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek case Stmt::ForStmtClass: 363e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 364220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 365e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek default: 366e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek break; 3671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 369e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 370e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek else if (isa<BinaryOperator>(S)) { 371e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // Special case: the binary operator represents the initialization 372e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // code in a for statement (this can happen when the variable being 373e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // initialized is an old variable. 374e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (const ForStmt *FS = 375e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek dyn_cast_or_null<ForStmt>(P.getParentIgnoreParens(S))) { 376e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (FS->getInit() == S) 377220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(FS, SMgr, LC); 378e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 379e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 380e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 381220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 382d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek} 383d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 384cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 3853106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// "Minimal" path diagnostic generation algorithm. 386cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 38756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zakstypedef std::pair<PathDiagnosticCallPiece*, const ExplodedNode*> StackDiagPair; 38856a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zakstypedef SmallVector<StackDiagPair, 6> StackDiagVector; 38956a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks 390368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaksstatic void updateStackPiecesWithMessage(PathDiagnosticPiece *P, 39156a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector &CallStack) { 392368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // If the piece contains a special message, add it to all the call 393368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // pieces on the active stack. 394368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (PathDiagnosticEventPiece *ep = 395368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks dyn_cast<PathDiagnosticEventPiece>(P)) { 396368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 39756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks if (ep->hasCallStackHint()) 39856a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks for (StackDiagVector::iterator I = CallStack.begin(), 39956a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks E = CallStack.end(); I != E; ++I) { 40056a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks PathDiagnosticCallPiece *CP = I->first; 40156a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks const ExplodedNode *N = I->second; 4028fe4525680ce72e90cee3e58b5654e3ae955447fNAKAMURA Takumi std::string stackMsg = ep->getCallStackMessage(N); 40356a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks 404368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // The last message on the path to final bug is the most important 405368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // one. Since we traverse the path backwards, do not add the message 406368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // if one has been previously added. 40756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks if (!CP->hasCallStackMessage()) 40856a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks CP->setCallStackMessage(stackMsg); 40956a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks } 410368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 411368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks} 412cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 41377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenekstatic void CompactPathDiagnostic(PathPieces &path, const SourceManager& SM); 41414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 4153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekstatic void GenerateMinimalPathDiagnostic(PathDiagnostic& PD, 4163106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticBuilder &PDB, 4173bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose const ExplodedNode *N, 4183bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose ArrayRef<BugReporterVisitor *> visitors) { 4198966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek 4203106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceManager& SMgr = PDB.getSourceManager(); 42159950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek const LocationContext *LC = PDB.LC; 4229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *NextNode = N->pred_empty() 4233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek ? NULL : *(N->pred_begin()); 424368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 42556a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector CallStack; 426368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 4273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (NextNode) { 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump N = NextNode; 42959950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PDB.LC = N->getLocationContext(); 4303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek NextNode = GetPredecessorNode(N); 4311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek ProgramPoint P = N->getLocation(); 4332042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek 4340b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const CallExitEnd *CE = dyn_cast<CallExitEnd>(&P)) { 4352042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece *C = 4362042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece::construct(N, *CE, SMgr); 4372042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(C); 4382042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.pushActivePath(&C->path); 43956a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks CallStack.push_back(StackDiagPair(C, N)); 4402042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek continue; 4412042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 4422042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek 4432042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek if (const CallEnter *CE = dyn_cast<CallEnter>(&P)) { 444183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose // Flush all locations, and pop the active path. 445183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose bool VisitedEntireCall = PD.isWithinCall(); 4462042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.popActivePath(); 447183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose 448183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose // Either we just added a bunch of stuff to the top-level path, or 449183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose // we have a previous CallExitEnd. If the former, it means that the 4502042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path terminated within a function call. We must then take the 4512042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // current contents of the active path and place it within 4522042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // a new PathDiagnosticCallPiece. 453183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PathDiagnosticCallPiece *C; 454183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose if (VisitedEntireCall) { 455183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose C = cast<PathDiagnosticCallPiece>(PD.getActivePath().front()); 456183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose } else { 4579373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks const Decl *Caller = CE->getLocationContext()->getDecl(); 4589373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks C = PathDiagnosticCallPiece::construct(PD.getActivePath(), Caller); 4599373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks } 460183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose 4612042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek C->setCallee(*CE, SMgr); 462368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (!CallStack.empty()) { 46356a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks assert(CallStack.back().first == C); 464368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks CallStack.pop_back(); 465368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 4662042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek continue; 4672042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4699c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const BlockEdge *BE = dyn_cast<BlockEdge>(&P)) { 4709c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Src = BE->getSrc(); 4719c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Dst = BE->getDst(); 4729c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *T = Src->getTerminator(); 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek if (!T) 47561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek continue; 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 477590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticLocation Start = 478590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticLocation::createBegin(T, SMgr, 479590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks N->getLocationContext()); 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek switch (T->getStmtClass()) { 48261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek default: 48361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek case Stmt::GotoStmtClass: 4861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::IndirectGotoStmtClass: { 4879c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = GetNextStmt(N); 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48961f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek if (!S) 49061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek continue; 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 492297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 4931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::raw_string_ostream os(sbuf); 494d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek const PathDiagnosticLocation &End = PDB.getEnclosingStmtLocation(S); 4951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49600605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os << "Control jumps to line " 497642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 4982042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 499802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek os.str())); 50061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 50161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 5021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::SwitchStmtClass: { 50461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek // Figure out what case arm we took. 505297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 506297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 5071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5089c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *S = Dst->getLabel()) { 509220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(S, SMgr, LC); 5101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5115a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek switch (S->getStmtClass()) { 512082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek default: 513082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "No cases match in the switch statement. " 5143106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek "Control jumps to line " 515642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 516082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 517082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek case Stmt::DefaultStmtClass: 518082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "Control jumps to the 'default' case at line " 519642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 520082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 5211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 522082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek case Stmt::CaseStmtClass: { 5231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os << "Control jumps to 'case "; 5249c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = cast<CaseStmt>(S); 5259c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LHS = Case->getLHS()->IgnoreParenCasts(); 5261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Determine if it is an enum. 528082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek bool GetRawInt = true; 5291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5309c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(LHS)) { 531082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek // FIXME: Maybe this should be an assertion. Are there cases 532082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek // were it is not an EnumConstantDecl? 5339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const EnumConstantDecl *D = 53403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu dyn_cast<EnumConstantDecl>(DR->getDecl()); 5351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 536082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek if (D) { 537082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek GetRawInt = false; 538b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer os << *D; 539082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 5405a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek } 5419ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman 5429ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman if (GetRawInt) 543a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith os << LHS->EvaluateKnownConstInt(PDB.getASTContext()); 5449ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman 54500605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os << ":' at line " 546642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 547082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 548082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 54961f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 5502042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 55100605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os.str())); 55261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 553567839273dfc395a459cbe77d5f8d128b9ae85bfTed Kremenek else { 554c3517ebb48a51e146badc08bc3684520c41da6c8Ted Kremenek os << "'Default' branch taken. "; 5551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const PathDiagnosticLocation &End = PDB.ExecutionContinues(os, N); 5562042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 55700605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os.str())); 558567839273dfc395a459cbe77d5f8d128b9ae85bfTed Kremenek } 5591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 56061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 56161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 5621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5632673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek case Stmt::BreakStmtClass: 5642673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek case Stmt::ContinueStmtClass: { 565297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 566297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 56700605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 5682042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 569082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os.str())); 5702673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek break; 5712673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek } 5721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine control-flow for ternary '?'. 57456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 575706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek case Stmt::ConditionalOperatorClass: { 576297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 577297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 5781d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek os << "'?' condition is "; 5791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 580706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek if (*(Src->succ_begin()+1) == Dst) 581082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "false"; 582706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek else 583082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "true"; 5841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 58500605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 5861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5871d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek if (const Stmt *S = End.asStmt()) 5881d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 5891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5902042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 591babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek os.str())); 592babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek break; 593babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 5941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5953106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine control-flow for short-circuited '&&' and '||'. 596babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek case Stmt::BinaryOperatorClass: { 597babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek if (!PDB.supportsLogicalOpControlFlow()) 598babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek break; 5991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 60003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator *B = cast<BinaryOperator>(T); 601babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek std::string sbuf; 602babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek llvm::raw_string_ostream os(sbuf); 603babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek os << "Left side of '"; 6041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6052de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (B->getOpcode() == BO_LAnd) { 606f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "&&" << "' is "; 6071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 608f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek if (*(Src->succ_begin()+1) == Dst) { 609f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "false"; 610220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(B->getLHS(), SMgr, LC); 6110cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation Start = 6120cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createOperatorLoc(B, SMgr); 6132042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 614f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os.str())); 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 616f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek else { 617f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "true"; 618220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation Start(B->getLHS(), SMgr, LC); 619f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6202042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 621f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os.str())); 6221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 623babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 624babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek else { 6252de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert(B->getOpcode() == BO_LOr); 626f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "||" << "' is "; 6271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 628f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek if (*(Src->succ_begin()+1) == Dst) { 629f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "false"; 630220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation Start(B->getLHS(), SMgr, LC); 631f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6322042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os.str())); 634f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 635f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek else { 636f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "true"; 637220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(B->getLHS(), SMgr, LC); 6380cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation Start = 6390cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createOperatorLoc(B, SMgr); 6402042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os.str())); 642f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 643babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 6441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 645706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek break; 646706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek } 6471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::DoStmtClass: { 649706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek if (*(Src->succ_begin()) == Dst) { 650297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 651297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 6521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 653c3517ebb48a51e146badc08bc3684520c41da6c8Ted Kremenek os << "Loop condition is true. "; 654d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 6551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 656d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek if (const Stmt *S = End.asStmt()) 657d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek End = PDB.getEnclosingStmtLocation(S); 6581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6592042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 660082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os.str())); 661082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 662082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek else { 66300605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 665d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek if (const Stmt *S = End.asStmt()) 666d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek End = PDB.getEnclosingStmtLocation(S); 6671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6682042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6693106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek "Loop condition is false. Exiting loop")); 6703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6723106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 6733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6753106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek case Stmt::WhileStmtClass: 6761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::ForStmtClass: { 6773106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (*(Src->succ_begin()+1) == Dst) { 6783106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek std::string sbuf; 6793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::raw_string_ostream os(sbuf); 6801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek os << "Loop condition is false. "; 6823106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 6833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 6843106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 6851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6862042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6873106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek os.str())); 6883106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6893106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek else { 6903106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6913106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 6923106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 6931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6942042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6955fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Loop condition is true. Entering loop body")); 6963106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 6993106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek case Stmt::IfStmtClass: { 7023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 7031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7043106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 7053106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 7061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (*(Src->succ_begin()+1) == Dst) 7082042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 7095fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Taking false branch")); 7101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 7112042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 7125fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Taking true branch")); 7131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7143106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 7153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7163106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7173106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 719dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek if (NextNode) { 7208e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Add diagnostic pieces from custom visitors. 7218e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *R = PDB.getBugReport(); 7223bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose for (ArrayRef<BugReporterVisitor *>::iterator I = visitors.begin(), 7233bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose E = visitors.end(); 7243bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose I != E; ++I) { 725368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (PathDiagnosticPiece *p = (*I)->VisitNode(N, NextNode, PDB, *R)) { 7262042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 727368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks updateStackPiecesWithMessage(p, CallStack); 728368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 729dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 7308966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek } 7313106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 73314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // After constructing the full PathDiagnostic, do a pass over it to compact 73414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // PathDiagnosticPieces that occur within a macro. 73577d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek CompactPathDiagnostic(PD.getMutablePieces(), PDB.getSourceManager()); 7363106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 7373106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 7383106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 7395fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek// "Extensive" PathDiagnostic generation. 7405fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek//===----------------------------------------------------------------------===// 7415fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek 7425fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenekstatic bool IsControlFlowExpr(const Stmt *S) { 7435fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek const Expr *E = dyn_cast<Expr>(S); 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7455fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (!E) 7465fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return false; 7471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump E = E->IgnoreParenCasts(); 7491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 75056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (isa<AbstractConditionalOperator>(E)) 7515fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return true; 7521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7535fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (const BinaryOperator *B = dyn_cast<BinaryOperator>(E)) 7545fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (B->isLogicalOp()) 7555fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return true; 7561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return false; 7585fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek} 7595fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek 76014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremeneknamespace { 761ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass ContextLocation : public PathDiagnosticLocation { 7628f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool IsDead; 7638f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenekpublic: 7648f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek ContextLocation(const PathDiagnosticLocation &L, bool isdead = false) 7658f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek : PathDiagnosticLocation(L), IsDead(isdead) {} 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void markDead() { IsDead = true; } 7688f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool isDead() const { return IsDead; } 7698f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek}; 7701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 771ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass EdgeBuilder { 7728f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek std::vector<ContextLocation> CLocs; 7738f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek typedef std::vector<ContextLocation>::iterator iterator; 77414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnostic &PD; 77514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticBuilder &PDB; 77614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticLocation PrevLoc; 7771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7788f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool IsConsumedExpr(const PathDiagnosticLocation &L); 7791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek bool containsLocation(const PathDiagnosticLocation &Container, 78114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &Containee); 7821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 78314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticLocation getContextLocation(const PathDiagnosticLocation &L); 7841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7859650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek PathDiagnosticLocation cleanUpLocation(PathDiagnosticLocation L, 7869650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek bool firstCharOnly = false) { 7878c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek if (const Stmt *S = L.asStmt()) { 7889650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek const Stmt *Original = S; 7898c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek while (1) { 7908c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek // Adjust the location for some expressions that are best referenced 7918c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek // by one of their subexpressions. 7929650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek switch (S->getStmtClass()) { 7939650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek default: 7949650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek break; 7959650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ParenExprClass: 796f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 797f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne S = cast<Expr>(S)->IgnoreParens(); 7989650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 7999650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 80056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 8019650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ConditionalOperatorClass: 80256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall S = cast<AbstractConditionalOperator>(S)->getCond(); 8039650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 8049650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 8059650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ChooseExprClass: 8069650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek S = cast<ChooseExpr>(S)->getCond(); 8079650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 8089650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 8099650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::BinaryOperatorClass: 8109650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek S = cast<BinaryOperator>(S)->getLHS(); 8119650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 8129650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 8139650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek } 8141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8159650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek break; 8168c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8189650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek if (S != Original) 81959950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek L = PathDiagnosticLocation(S, L.getManager(), PDB.LC); 8208c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8229650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek if (firstCharOnly) 8231531bb0c69d9afff6a6434e4cadf345eb628b287Anna Zaks L = PathDiagnosticLocation::createSingleLocation(L); 8249650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek 8258c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek return L; 8268c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void popLocation() { 8298f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (!CLocs.back().isDead() && CLocs.back().asLocation().isFileID()) { 8305c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek // For contexts, we only one the first character as the range. 83107c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek rawAddEdge(cleanUpLocation(CLocs.back(), true)); 8325c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek } 83314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.pop_back(); 83414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 8351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 83614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekpublic: 83714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek EdgeBuilder(PathDiagnostic &pd, PathDiagnosticBuilder &pdb) 83814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek : PD(pd), PDB(pdb) { 8391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 840a301a6773db085575ac51e3c966858180390c25bTed Kremenek // If the PathDiagnostic already has pieces, add the enclosing statement 841a301a6773db085575ac51e3c966858180390c25bTed Kremenek // of the first piece as a context as well. 842802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek if (!PD.path.empty()) { 843802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek PrevLoc = (*PD.path.begin())->getLocation(); 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = PrevLoc.asStmt()) 846e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addExtendedContext(PDB.getEnclosingStmtLocation(S).asStmt()); 84714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 84814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 84914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 85014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ~EdgeBuilder() { 85114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) popLocation(); 8520cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks 853a301a6773db085575ac51e3c966858180390c25bTed Kremenek // Finally, add an initial edge from the start location of the first 854a301a6773db085575ac51e3c966858180390c25bTed Kremenek // statement (if it doesn't already exist). 8550cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation L = PathDiagnosticLocation::createDeclBegin( 85659950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PDB.LC, 8570cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PDB.getSourceManager()); 8580cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks if (L.isValid()) 8590cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks rawAddEdge(L); 86014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 86114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 8625de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek void flushLocations() { 8635de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek while (!CLocs.empty()) 8645de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek popLocation(); 8655de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek PrevLoc = PathDiagnosticLocation(); 8665de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek } 8675de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 86814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void addEdge(PathDiagnosticLocation NewLoc, bool alwaysAdd = false); 8691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8708bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek void rawAddEdge(PathDiagnosticLocation NewLoc); 8711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void addContext(const Stmt *S); 873183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose void addContext(const PathDiagnosticLocation &L); 874e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek void addExtendedContext(const Stmt *S); 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 87614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} // end anonymous namespace 87714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 87814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 87914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted KremenekPathDiagnosticLocation 88014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted KremenekEdgeBuilder::getContextLocation(const PathDiagnosticLocation &L) { 88114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = L.asStmt()) { 88214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (IsControlFlowExpr(S)) 88314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return L; 8841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return PDB.getEnclosingStmtLocation(S); 88614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 8871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return L; 88914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 89014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 89114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekbool EdgeBuilder::containsLocation(const PathDiagnosticLocation &Container, 89214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &Containee) { 89314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 89414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (Container == Containee) 89514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 8961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (Container.asDecl()) 89814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 8991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 90014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = Containee.asStmt()) 90114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *ContainerS = Container.asStmt()) { 90214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (S) { 90314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (S == ContainerS) 90414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 90514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek S = PDB.getParent(S); 90614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 90714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return false; 90814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 90914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 91014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Less accurate: compare using source ranges. 91114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceRange ContainerR = Container.asRange(); 91214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceRange ContaineeR = Containee.asRange(); 9131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceManager &SM = PDB.getSourceManager(); 915402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContainerRBeg = SM.getExpansionLoc(ContainerR.getBegin()); 916402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContainerREnd = SM.getExpansionLoc(ContainerR.getEnd()); 917402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContaineeRBeg = SM.getExpansionLoc(ContaineeR.getBegin()); 918402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContaineeREnd = SM.getExpansionLoc(ContaineeR.getEnd()); 9191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 920642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContainerBegLine = SM.getExpansionLineNumber(ContainerRBeg); 921642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContainerEndLine = SM.getExpansionLineNumber(ContainerREnd); 922642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContaineeBegLine = SM.getExpansionLineNumber(ContaineeRBeg); 923642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContaineeEndLine = SM.getExpansionLineNumber(ContaineeREnd); 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek assert(ContainerBegLine <= ContainerEndLine); 9261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(ContaineeBegLine <= ContaineeEndLine); 9271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return (ContainerBegLine <= ContaineeBegLine && 92914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ContainerEndLine >= ContaineeEndLine && 93014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek (ContainerBegLine != ContaineeBegLine || 931a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContainerRBeg) <= 932a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContaineeRBeg)) && 93314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek (ContainerEndLine != ContaineeEndLine || 934a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContainerREnd) >= 9356488dc31153be6f98b404c7860be6c66bb4ec917Ted Kremenek SM.getExpansionColumnNumber(ContaineeREnd))); 93614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 93714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 93814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::rawAddEdge(PathDiagnosticLocation NewLoc) { 93914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (!PrevLoc.isValid()) { 94014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PrevLoc = NewLoc; 94114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 94214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 9431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9448c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const PathDiagnosticLocation &NewLocClean = cleanUpLocation(NewLoc); 9458c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const PathDiagnosticLocation &PrevLocClean = cleanUpLocation(PrevLoc); 9461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9478c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek if (NewLocClean.asLocation() == PrevLocClean.asLocation()) 94814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 9491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // FIXME: Ignore intra-macro edges for now. 951402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth if (NewLocClean.asLocation().getExpansionLoc() == 952402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth PrevLocClean.asLocation().getExpansionLoc()) 95314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 95414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 9552042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(NewLocClean, PrevLocClean)); 9568c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek PrevLoc = NewLoc; 95714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 95814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 95914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::addEdge(PathDiagnosticLocation NewLoc, bool alwaysAdd) { 9601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 961a301a6773db085575ac51e3c966858180390c25bTed Kremenek if (!alwaysAdd && NewLoc.asLocation().isMacroID()) 962a301a6773db085575ac51e3c966858180390c25bTed Kremenek return; 9631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &CLoc = getContextLocation(NewLoc); 96514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 96614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) { 9678f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek ContextLocation &TopContextLoc = CLocs.back(); 9681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Is the top location context the same as the one for the new location? 97014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (TopContextLoc == CLoc) { 9718f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (alwaysAdd) { 9724c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek if (IsConsumedExpr(TopContextLoc) && 9734c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek !IsControlFlowExpr(TopContextLoc.asStmt())) 9748f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek TopContextLoc.markDead(); 9758f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek 97614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek rawAddEdge(NewLoc); 9778f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 97814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 97914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 98014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 98114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 98214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (containsLocation(TopContextLoc, CLoc)) { 9838f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (alwaysAdd) { 98414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek rawAddEdge(NewLoc); 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9864c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek if (IsConsumedExpr(CLoc) && !IsControlFlowExpr(CLoc.asStmt())) { 9878f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek CLocs.push_back(ContextLocation(CLoc, true)); 9888f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return; 9898f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 9908f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 9911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(CLoc); 9931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return; 99414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 99514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 99614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Context does not contain the location. Flush it. 99714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek popLocation(); 99814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 9991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10005c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek // If we reach here, there is no enclosing context. Just add the edge. 10015c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek rawAddEdge(NewLoc); 100214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 100314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 10048f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenekbool EdgeBuilder::IsConsumedExpr(const PathDiagnosticLocation &L) { 10058f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (const Expr *X = dyn_cast_or_null<Expr>(L.asStmt())) 10068f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return PDB.getParentMap().isConsumedExpr(X) && !IsControlFlowExpr(X); 10071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10088f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return false; 10098f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek} 10101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1011e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenekvoid EdgeBuilder::addExtendedContext(const Stmt *S) { 1012e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (!S) 1013e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek return; 10141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *Parent = PDB.getParent(S); 1016e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek while (Parent) { 1017e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (isa<CompoundStmt>(Parent)) 1018e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek Parent = PDB.getParent(Parent); 1019e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek else 1020e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek break; 1021e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 1022e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek 1023e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (Parent) { 1024e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek switch (Parent->getStmtClass()) { 1025e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek case Stmt::DoStmtClass: 1026e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 1027e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addContext(Parent); 1028e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek default: 1029e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek break; 1030e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 1031e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 10321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1033e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addContext(S); 1034e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek} 10351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 103614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::addContext(const Stmt *S) { 103714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (!S) 103814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 103914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 104059950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PathDiagnosticLocation L(S, PDB.getSourceManager(), PDB.LC); 1041183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose addContext(L); 1042183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose} 10431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1044183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rosevoid EdgeBuilder::addContext(const PathDiagnosticLocation &L) { 104514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) { 104614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &TopContextLoc = CLocs.back(); 104714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 104814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Is the top location context the same as the one for the new location? 104914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (TopContextLoc == L) 105014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 105114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 105214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (containsLocation(TopContextLoc, L)) { 105314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(L); 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return; 105514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 105614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 105714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Context does not contain the location. Flush it. 105814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek popLocation(); 105914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 106014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 106114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(L); 106214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 106314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 106411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// Cone-of-influence: support the reverse propagation of "interesting" symbols 106511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// and values by tracing interesting calculations backwards through evaluated 106611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// expressions along a path. This is probably overly complicated, but the idea 106711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// is that if an expression computed an "interesting" value, the child 106811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// expressions are are also likely to be "interesting" as well (which then 106911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// propagates to the values they in turn compute). This reverse propagation 107011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// is needed to track interesting correlations across function call boundaries, 107111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// where formal arguments bind to actual arguments, etc. This is also needed 107211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// because the constraint solver sometimes simplifies certain symbolic values 107311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// into constants when appropriate, and this complicates reasoning about 107411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek// interesting values. 107511abcecc8c919673237cf37384290a1ef1943976Ted Kremenektypedef llvm::DenseSet<const Expr *> InterestingExprs; 107611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 107711abcecc8c919673237cf37384290a1ef1943976Ted Kremenekstatic void reversePropagateIntererstingSymbols(BugReport &R, 107811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek InterestingExprs &IE, 107911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const ProgramState *State, 108011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const Expr *Ex, 108111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const LocationContext *LCtx) { 108211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek SVal V = State->getSVal(Ex, LCtx); 108311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (!(R.isInteresting(V) || IE.count(Ex))) 108411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek return; 108511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 108611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek switch (Ex->getStmtClass()) { 108711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek default: 108811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (!isa<CastExpr>(Ex)) 108911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek break; 109011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek // Fall through. 109111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek case Stmt::BinaryOperatorClass: 109211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek case Stmt::UnaryOperatorClass: { 109311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek for (Stmt::const_child_iterator CI = Ex->child_begin(), 109411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek CE = Ex->child_end(); 109511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek CI != CE; ++CI) { 109611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const Expr *child = dyn_cast_or_null<Expr>(*CI)) { 109711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek IE.insert(child); 109811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek SVal ChildV = State->getSVal(child, LCtx); 109911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek R.markInteresting(ChildV); 110011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 110111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek break; 110211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 110311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 110411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 110511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 110611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek R.markInteresting(V); 110711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek} 110811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 110911abcecc8c919673237cf37384290a1ef1943976Ted Kremenekstatic void reversePropagateInterestingSymbols(BugReport &R, 111011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek InterestingExprs &IE, 111111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const ProgramState *State, 111211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const LocationContext *CalleeCtx, 111311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const LocationContext *CallerCtx) 111411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek{ 1115852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose // FIXME: Handle non-CallExpr-based CallEvents. 111611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const StackFrameContext *Callee = CalleeCtx->getCurrentStackFrame(); 111711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const Stmt *CallSite = Callee->getCallSite(); 1118852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose if (const CallExpr *CE = dyn_cast_or_null<CallExpr>(CallSite)) { 111911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(CalleeCtx->getDecl())) { 112011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek FunctionDecl::param_const_iterator PI = FD->param_begin(), 112111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek PE = FD->param_end(); 112211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek CallExpr::const_arg_iterator AI = CE->arg_begin(), AE = CE->arg_end(); 112311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek for (; AI != AE && PI != PE; ++AI, ++PI) { 112411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const Expr *ArgE = *AI) { 112511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const ParmVarDecl *PD = *PI) { 112611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek Loc LV = State->getLValue(PD, CalleeCtx); 112711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (R.isInteresting(LV) || R.isInteresting(State->getRawSVal(LV))) 112811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek IE.insert(ArgE); 112911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 113011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 113111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 113211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 113311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 113411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek} 113511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 113614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekstatic void GenerateExtensivePathDiagnostic(PathDiagnostic& PD, 113714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticBuilder &PDB, 11383bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose const ExplodedNode *N, 11393bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose ArrayRef<BugReporterVisitor *> visitors) { 114014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek EdgeBuilder EB(PD, PDB); 11410cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks const SourceManager& SM = PDB.getSourceManager(); 114256a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector CallStack; 114311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek InterestingExprs IE; 114414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 11459c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *NextNode = N->pred_empty() ? NULL : *(N->pred_begin()); 114614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (NextNode) { 114714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek N = NextNode; 114814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek NextNode = GetPredecessorNode(N); 114914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ProgramPoint P = N->getLocation(); 115014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 1151dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek do { 115211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const PostStmt *PS = dyn_cast<PostStmt>(&P)) { 115311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const Expr *Ex = PS->getStmtAs<Expr>()) 115411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek reversePropagateIntererstingSymbols(*PDB.getBugReport(), IE, 115511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek N->getState().getPtr(), Ex, 115611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek N->getLocationContext()); 115711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 115811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 11590b3ade86a1c60cf0c7b56aa238aff458eb7f5974Anna Zaks if (const CallExitEnd *CE = dyn_cast<CallExitEnd>(&P)) { 1160183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose const Stmt *S = CE->getCalleeContext()->getCallSite(); 1161183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose if (const Expr *Ex = dyn_cast_or_null<Expr>(S)) { 1162852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose reversePropagateIntererstingSymbols(*PDB.getBugReport(), IE, 1163852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose N->getState().getPtr(), Ex, 1164852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose N->getLocationContext()); 1165852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose } 1166183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose 1167183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PathDiagnosticCallPiece *C = 1168183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PathDiagnosticCallPiece::construct(N, *CE, SM); 1169183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose 1170183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose EB.addEdge(C->callReturn, true); 1171183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose EB.flushLocations(); 1172183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose 1173183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PD.getActivePath().push_front(C); 1174183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PD.pushActivePath(&C->path); 1175183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose CallStack.push_back(StackDiagPair(C, N)); 11765de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek break; 11775de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek } 11784ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek 11792042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // Pop the call hierarchy if we are done walking the contents 11802042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // of a function call. 11812042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek if (const CallEnter *CE = dyn_cast<CallEnter>(&P)) { 1182097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek // Add an edge to the start of the function. 1183097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek const Decl *D = CE->getCalleeContext()->getDecl(); 1184097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek PathDiagnosticLocation pos = 1185097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek PathDiagnosticLocation::createBegin(D, SM); 1186097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek EB.addEdge(pos); 1187097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek 1188097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek // Flush all locations, and pop the active path. 1189183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose bool VisitedEntireCall = PD.isWithinCall(); 11904ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek EB.flushLocations(); 11912042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.popActivePath(); 11924ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek PDB.LC = N->getLocationContext(); 1193097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek 1194183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose // Either we just added a bunch of stuff to the top-level path, or 1195183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose // we have a previous CallExitEnd. If the former, it means that the 11962042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path terminated within a function call. We must then take the 11972042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // current contents of the active path and place it within 11982042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // a new PathDiagnosticCallPiece. 1199183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose PathDiagnosticCallPiece *C; 1200183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose if (VisitedEntireCall) { 1201183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose C = cast<PathDiagnosticCallPiece>(PD.getActivePath().front()); 1202183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose } else { 1203183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose const Decl *Caller = CE->getLocationContext()->getDecl(); 12049373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks C = PathDiagnosticCallPiece::construct(PD.getActivePath(), Caller); 12059373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks } 1206852aa0d2c5d2d1faf2d77b5aa3c0848068a342c5Jordan Rose 1207183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose C->setCallee(*CE, SM); 1208183ba8e19d49ab1ae25d3cdd0a19591369c5ab9fJordan Rose EB.addContext(C->getLocation()); 1209368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 1210368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (!CallStack.empty()) { 121156a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks assert(CallStack.back().first == C); 1212368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks CallStack.pop_back(); 1213368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 12142042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek break; 12152042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 12164ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek 12174ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // Note that is important that we update the LocationContext 12184ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // after looking at CallExits. CallExit basically adds an 12194ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // edge in the *caller*, so we don't want to update the LocationContext 12204ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // too soon. 12214ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek PDB.LC = N->getLocationContext(); 12225de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 1223dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek // Block edges. 122411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (const BlockEdge *BE = dyn_cast<BlockEdge>(&P)) { 122511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek // Does this represent entering a call? If so, look at propagating 122611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek // interesting symbols across call boundaries. 122711abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (NextNode) { 122811abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const LocationContext *CallerCtx = NextNode->getLocationContext(); 122911abcecc8c919673237cf37384290a1ef1943976Ted Kremenek const LocationContext *CalleeCtx = PDB.LC; 123011abcecc8c919673237cf37384290a1ef1943976Ted Kremenek if (CallerCtx != CalleeCtx) { 123111abcecc8c919673237cf37384290a1ef1943976Ted Kremenek reversePropagateInterestingSymbols(*PDB.getBugReport(), IE, 123211abcecc8c919673237cf37384290a1ef1943976Ted Kremenek N->getState().getPtr(), 123311abcecc8c919673237cf37384290a1ef1943976Ted Kremenek CalleeCtx, CallerCtx); 123411abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 123511abcecc8c919673237cf37384290a1ef1943976Ted Kremenek } 123611abcecc8c919673237cf37384290a1ef1943976Ted Kremenek 1237dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek const CFGBlock &Blk = *BE->getSrc(); 1238dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek const Stmt *Term = Blk.getTerminator(); 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1240dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek // Are we jumping to the head of a loop? Add a special diagnostic. 1241ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (const Stmt *Loop = BE->getDst()->getLoopTarget()) { 124259950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PathDiagnosticLocation L(Loop, SM, PDB.LC); 1243ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek const CompoundStmt *CS = NULL; 12441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1245ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (!Term) { 1246ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (const ForStmt *FS = dyn_cast<ForStmt>(Loop)) 1247ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek CS = dyn_cast<CompoundStmt>(FS->getBody()); 1248ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek else if (const WhileStmt *WS = dyn_cast<WhileStmt>(Loop)) 12491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CS = dyn_cast<CompoundStmt>(WS->getBody()); 1250ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek } 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1252dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek PathDiagnosticEventPiece *p = 1253dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek new PathDiagnosticEventPiece(L, 125407c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek "Looping back to the head of the loop"); 12552dd17abf11ae64339fa6bfaa57d76e13a5fbe5b8Ted Kremenek p->setPrunable(true); 12561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1257dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek EB.addEdge(p->getLocation(), true); 12582042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 12591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1260ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (CS) { 12610cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation BL = 12620cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createEndBrace(CS, SM); 126307c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek EB.addEdge(BL); 1264dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 12658bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek } 12661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1267ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (Term) 1268ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek EB.addContext(Term); 12691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1270dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek break; 12718bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek } 127214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 12731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const BlockEntrance *BE = dyn_cast<BlockEntrance>(&P)) { 12743c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek if (const CFGStmt *S = BE->getFirstElement().getAs<CFGStmt>()) { 12753c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const Stmt *stmt = S->getStmt(); 12763c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek if (IsControlFlowExpr(stmt)) { 1277b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // Add the proper context for '&&', '||', and '?'. 12783c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek EB.addContext(stmt); 1279b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 1280b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu else 12813c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek EB.addExtendedContext(PDB.getEnclosingStmtLocation(stmt).asStmt()); 1282dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 1283b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1284dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek break; 1285dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 12865de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 12875de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 1288dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } while (0); 12891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1290dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek if (!NextNode) 129114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek continue; 12921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12938e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Add pieces from custom visitors. 12948e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *R = PDB.getBugReport(); 12953bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose for (ArrayRef<BugReporterVisitor *>::iterator I = visitors.begin(), 12963bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose E = visitors.end(); 12973bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose I != E; ++I) { 12988e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (PathDiagnosticPiece *p = (*I)->VisitNode(N, NextNode, PDB, *R)) { 12998966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek const PathDiagnosticLocation &Loc = p->getLocation(); 13008966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek EB.addEdge(Loc, true); 13012042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 1302368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks updateStackPiecesWithMessage(p, CallStack); 1303368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 13048966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek if (const Stmt *S = Loc.asStmt()) 13051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump EB.addExtendedContext(PDB.getEnclosingStmtLocation(S).asStmt()); 13068966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek } 13071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 130814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 130914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 131014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 13115fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek//===----------------------------------------------------------------------===// 13123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugType and subclasses. 13133106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 1314404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios KyrtzidisBugType::~BugType() { } 1315404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 13163106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid BugType::FlushReports(BugReporter &BR) {} 13173106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 131899ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid BuiltinBug::anchor() {} 131999ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 13203106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 13213106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugReport and subclasses. 13223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 1323e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 132499ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid BugReport::NodeResolver::anchor() {} 132599ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 13268e6431adab313e283a992698f6fc7afe62420999Anna Zaksvoid BugReport::addVisitor(BugReporterVisitor* visitor) { 13278e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (!visitor) 13288e6431adab313e283a992698f6fc7afe62420999Anna Zaks return; 13298e6431adab313e283a992698f6fc7afe62420999Anna Zaks 13308e6431adab313e283a992698f6fc7afe62420999Anna Zaks llvm::FoldingSetNodeID ID; 13318e6431adab313e283a992698f6fc7afe62420999Anna Zaks visitor->Profile(ID); 13328e6431adab313e283a992698f6fc7afe62420999Anna Zaks void *InsertPos; 13338e6431adab313e283a992698f6fc7afe62420999Anna Zaks 13348e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (CallbacksSet.FindNodeOrInsertPos(ID, InsertPos)) { 13358e6431adab313e283a992698f6fc7afe62420999Anna Zaks delete visitor; 13368e6431adab313e283a992698f6fc7afe62420999Anna Zaks return; 13378e6431adab313e283a992698f6fc7afe62420999Anna Zaks } 13388e6431adab313e283a992698f6fc7afe62420999Anna Zaks 13398e6431adab313e283a992698f6fc7afe62420999Anna Zaks CallbacksSet.InsertNode(visitor, InsertPos); 13403bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose Callbacks.push_back(visitor); 13413bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose ++ConfigurationChangeToken; 13428e6431adab313e283a992698f6fc7afe62420999Anna Zaks} 13438e6431adab313e283a992698f6fc7afe62420999Anna Zaks 13448e6431adab313e283a992698f6fc7afe62420999Anna ZaksBugReport::~BugReport() { 13458e6431adab313e283a992698f6fc7afe62420999Anna Zaks for (visitor_iterator I = visitor_begin(), E = visitor_end(); I != E; ++I) { 1346dc757b049796949e4b11646445a6598f0bdabd7aAnna Zaks delete *I; 13478e6431adab313e283a992698f6fc7afe62420999Anna Zaks } 13488e6431adab313e283a992698f6fc7afe62420999Anna Zaks} 1349e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 135007189521a15d9c088216b943649cb9fe231cbb57Ted Kremenekconst Decl *BugReport::getDeclWithIssue() const { 135107189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek if (DeclWithIssue) 135207189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek return DeclWithIssue; 135307189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek 135407189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek const ExplodedNode *N = getErrorNode(); 135507189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek if (!N) 135607189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek return 0; 135707189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek 135807189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek const LocationContext *LC = N->getLocationContext(); 135907189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek return LC->getCurrentStackFrame()->getDecl(); 136007189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek} 136107189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek 1362e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaksvoid BugReport::Profile(llvm::FoldingSetNodeID& hash) const { 1363e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddPointer(&BT); 1364e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddString(Description); 1365ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks if (UniqueingLocation.isValid()) { 1366ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks UniqueingLocation.Profile(hash); 1367ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks } else if (Location.isValid()) { 1368590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks Location.Profile(hash); 1369590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks } else { 1370590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks assert(ErrorNode); 1371590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks hash.AddPointer(GetCurrentOrPreviousStmt(ErrorNode)); 1372590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks } 1373e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 1374e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks for (SmallVectorImpl<SourceRange>::const_iterator I = 1375e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks Ranges.begin(), E = Ranges.end(); I != E; ++I) { 1376e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks const SourceRange range = *I; 1377e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (!range.isValid()) 1378e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks continue; 1379e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddInteger(range.getBegin().getRawEncoding()); 1380e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddInteger(range.getEnd().getRawEncoding()); 1381e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks } 1382e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks} 13833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 138476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(SymbolRef sym) { 138576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!sym) 138676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return; 13873bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 13883bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // If the symbol wasn't already in our set, note a configuration change. 13893bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose if (interestingSymbols.insert(sym).second) 13903bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose ++ConfigurationChangeToken; 13918ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose 13928ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose if (const SymbolMetadata *meta = dyn_cast<SymbolMetadata>(sym)) 13938ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose interestingRegions.insert(meta->getRegion()); 139476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 139576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 139676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(const MemRegion *R) { 139776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!R) 139876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return; 13993bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 14003bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // If the base region wasn't already in our set, note a configuration change. 140176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek R = R->getBaseRegion(); 14023bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose if (interestingRegions.insert(R).second) 14033bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose ++ConfigurationChangeToken; 14048ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose 140576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) 140676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek interestingSymbols.insert(SR->getSymbol()); 140776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 140876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 140976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(SVal V) { 141076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek markInteresting(V.getAsRegion()); 141176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek markInteresting(V.getAsSymbol()); 141276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 141376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 141476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(SVal V) const { 141576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return isInteresting(V.getAsRegion()) || isInteresting(V.getAsSymbol()); 141676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 141776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 141876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(SymbolRef sym) const { 141976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!sym) 142076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 14218ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose // We don't currently consider metadata symbols to be interesting 14228ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose // even if we know their region is interesting. Is that correct behavior? 142376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return interestingSymbols.count(sym); 142476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 142576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 142676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(const MemRegion *R) const { 142776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!R) 142876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 142976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek R = R->getBaseRegion(); 143076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek bool b = interestingRegions.count(R); 143176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (b) 143276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return true; 143376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) 143476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return interestingSymbols.count(SR->getSymbol()); 143576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 143676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 143776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 143876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 14399c378f705405d37f49795d5e915989de774fe11fTed Kremenekconst Stmt *BugReport::getStmt() const { 1440e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (!ErrorNode) 1441e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return 0; 1442e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 1443212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care ProgramPoint ProgP = ErrorNode->getLocation(); 14445f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek const Stmt *S = NULL; 14451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14469c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (BlockEntrance *BE = dyn_cast<BlockEntrance>(&ProgP)) { 1447fafd3834754d2093e0ad7a1c005860fd527ecb7fZhongxing Xu CFGBlock &Exit = ProgP.getLocationContext()->getCFG()->getExit(); 144850d5bc4e3b53eb8bb4ebf198f1213348a3fa0f38Zhongxing Xu if (BE->getBlock() == &Exit) 1449212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care S = GetPreviousStmt(ErrorNode); 14503106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 14515f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (!S) 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump S = GetStmt(ProgP); 14531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return S; 14553106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 14563106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1457640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidisstd::pair<BugReport::ranges_iterator, BugReport::ranges_iterator> 1458e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna ZaksBugReport::getRanges() { 1459e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks // If no custom ranges, add the range of the statement corresponding to 1460e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks // the error node. 1461e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (Ranges.empty()) { 1462e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (const Expr *E = dyn_cast_or_null<Expr>(getStmt())) 1463e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks addRange(E->getSourceRange()); 1464e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks else 1465e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return std::make_pair(ranges_iterator(), ranges_iterator()); 1466e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks } 1467e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 146814924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks // User-specified absence of range info. 146914924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks if (Ranges.size() == 1 && !Ranges.begin()->isValid()) 147014924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks return std::make_pair(ranges_iterator(), ranges_iterator()); 147114924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks 1472e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return std::make_pair(Ranges.begin(), Ranges.end()); 14733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 14743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1475590dd8e0959d8df5621827768987c4792b74fc06Anna ZaksPathDiagnosticLocation BugReport::getLocation(const SourceManager &SM) const { 1476b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks if (ErrorNode) { 1477590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks assert(!Location.isValid() && 1478b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks "Either Location or ErrorNode should be specified but not both."); 1479b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks 14809c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *S = GetCurrentOrPreviousStmt(ErrorNode)) { 1481590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks const LocationContext *LC = ErrorNode->getLocationContext(); 1482590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks 14833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // For member expressions, return the location of the '.' or '->'. 14845b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (const MemberExpr *ME = dyn_cast<MemberExpr>(S)) 1485590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createMemberLoc(ME, SM); 14865b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // For binary operators, return the location of the operator. 14875b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (const BinaryOperator *B = dyn_cast<BinaryOperator>(S)) 1488590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createOperatorLoc(B, SM); 14893106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1490590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createBegin(S, SM, LC); 14913106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1492b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks } else { 1493b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks assert(Location.isValid()); 1494b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks return Location; 1495b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks } 1496b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks 1497590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation(); 14983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 14993106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15003106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 15013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugReporter and subclasses. 15023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 15033106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15044a5f724538cbc275370c9504e8169ce92503256cBenjamin KramerBugReportEquivClass::~BugReportEquivClass() { } 1505a2f4ec0df645fc249d2945beef9653f03b175417Zhongxing XuGRBugReporter::~GRBugReporter() { } 15063106198188ac6eb2753f1764d5c28376b0b76351Ted KremenekBugReporterData::~BugReporterData() {} 15073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 150838b02b912e1a55c912f603c4369431264d36a381Zhongxing XuExplodedGraph &GRBugReporter::getGraph() { return Eng.getGraph(); } 15093106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 151018c66fdc3c4008d335885695fe36fb5353c5f672Ted KremenekProgramStateManager& 15113106198188ac6eb2753f1764d5c28376b0b76351Ted KremenekGRBugReporter::getStateManager() { return Eng.getStateManager(); } 15123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15133b030a28cda2b953758507769c1d436bec5ec45eAnna ZaksBugReporter::~BugReporter() { 15143b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks FlushReports(); 15153b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks 15163b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks // Free the bug reports we are tracking. 15173b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks typedef std::vector<BugReportEquivClass *> ContTy; 15183b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks for (ContTy::iterator I = EQClassesVector.begin(), E = EQClassesVector.end(); 15193b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks I != E; ++I) { 15203b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks delete *I; 15213b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks } 15223b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks} 15233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15243106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid BugReporter::FlushReports() { 15253106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (BugTypes.isEmpty()) 15263106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek return; 15273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // First flush the warnings for each BugType. This may end up creating new 1529404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // warnings and new BugTypes. 1530404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // FIXME: Only NSErrorChecker needs BugType's FlushReports. 1531404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // Turn NSErrorChecker into a proper checker and remove this. 15325f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<const BugType*, 16> bugTypes; 15333106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek for (BugTypesTy::iterator I=BugTypes.begin(), E=BugTypes.end(); I!=E; ++I) 1534404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis bugTypes.push_back(*I); 15355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVector<const BugType*, 16>::iterator 1536404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis I = bugTypes.begin(), E = bugTypes.end(); I != E; ++I) 15373106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek const_cast<BugType*>(*I)->FlushReports(*this); 15383106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15390eb6c37dd4e4ad8fa2363003dea270f9fd6c2969Anna Zaks typedef std::vector<BugReportEquivClass *> ContVecTy; 15400eb6c37dd4e4ad8fa2363003dea270f9fd6c2969Anna Zaks for (ContVecTy::iterator EI=EQClassesVector.begin(), EE=EQClassesVector.end(); 15410eb6c37dd4e4ad8fa2363003dea270f9fd6c2969Anna Zaks EI != EE; ++EI){ 15420eb6c37dd4e4ad8fa2363003dea270f9fd6c2969Anna Zaks BugReportEquivClass& EQ = **EI; 1543404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis FlushReport(EQ); 15443106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15453106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1546404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // BugReporter owns and deletes only BugTypes created implicitly through 1547404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // EmitBasicReport. 1548404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // FIXME: There are leaks from checkers that assume that the BugTypes they 1549404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // create will be destroyed by the BugReporter. 1550404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (llvm::StringMap<BugType*>::iterator 1551404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis I = StrBugTypes.begin(), E = StrBugTypes.end(); I != E; ++I) 1552404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis delete I->second; 1553404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 15543106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Remove all references to the BugType objects. 15553baf672378f105602d2b12f03f00277ae1936fe9Ted Kremenek BugTypes = F.getEmptySet(); 15563106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 15573106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15583106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 15593106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// PathDiagnostics generation. 15603106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 15613106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 156238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xustatic std::pair<std::pair<ExplodedGraph*, NodeBackMap*>, 1563c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::pair<ExplodedNode*, unsigned> > 156438b02b912e1a55c912f603c4369431264d36a381Zhongxing XuMakeReportGraph(const ExplodedGraph* G, 15655f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<const ExplodedNode*> &nodes) { 15661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15673106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create the trimmed graph. It will contain the shortest paths from the 15681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // error nodes to the root. In the new graph we should only have one 15693106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // error node unless there are two or more error nodes with the same minimum 15703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // path length. 157138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu ExplodedGraph* GTrim; 1572c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu InterExplodedGraphMap* NMap; 15733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 15743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*, const void*> InverseMap; 157540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek llvm::tie(GTrim, NMap) = G->Trim(nodes.data(), nodes.data() + nodes.size(), 157640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek &InverseMap); 15771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15783106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create owning pointers for GTrim and NMap just to ensure that they are 15793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // released when this function exists. 15806f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ExplodedGraph> AutoReleaseGTrim(GTrim); 15816f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<InterExplodedGraphMap> AutoReleaseNMap(NMap); 15821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the (first) error node in the trimmed graph. We just need to consult 15843106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // the node map (NMap) which maps from nodes in the original graph to nodes 15853106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // in the new graph. 1586938332c657390d1e782e0adc03b092993edae962Ted Kremenek 1587c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::queue<const ExplodedNode*> WS; 158838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::DenseMap<const ExplodedNode*, unsigned> IndexMapTy; 1589938332c657390d1e782e0adc03b092993edae962Ted Kremenek IndexMapTy IndexMap; 15903106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 159140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek for (unsigned nodeIndex = 0 ; nodeIndex < nodes.size(); ++nodeIndex) { 159240406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek const ExplodedNode *originalNode = nodes[nodeIndex]; 159340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (const ExplodedNode *N = NMap->getMappedNode(originalNode)) { 1594938332c657390d1e782e0adc03b092993edae962Ted Kremenek WS.push(N); 159540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek IndexMap[originalNode] = nodeIndex; 15963106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 159740406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek } 15981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1599938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(!WS.empty() && "No error node found in the trimmed graph."); 16003106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 16013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create a new (third!) graph with a single path. This is the graph 16023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // that will be returned to the caller. 1603c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu ExplodedGraph *GNew = new ExplodedGraph(); 16041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16053106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Sometimes the trimmed graph can contain a cycle. Perform a reverse BFS 16063106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // to the root node, and then construct a new graph that contains only 16073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // a single path. 16083106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*,unsigned> Visited; 16091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16103106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek unsigned cnt = 0; 16119c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *Root = 0; 16121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16133106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (!WS.empty()) { 16149c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *Node = WS.front(); 16153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek WS.pop(); 16161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16173106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Visited.find(Node) != Visited.end()) 16183106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 16191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16203106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Visited[Node] = cnt++; 16211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Node->pred_empty()) { 16233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Root = Node; 16243106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 16253106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1627c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu for (ExplodedNode::const_pred_iterator I=Node->pred_begin(), 16283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek E=Node->pred_end(); I!=E; ++I) 16293106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek WS.push(*I); 16303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1632938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(Root); 16331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16343106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Now walk from the root down the BFS path, always taking the successor 16353106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // with the lowest number. 16361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExplodedNode *Last = 0, *First = 0; 16373106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek NodeBackMap *BM = new NodeBackMap(); 1638938332c657390d1e782e0adc03b092993edae962Ted Kremenek unsigned NodeIndex = 0; 16391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1640c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu for ( const ExplodedNode *N = Root ;;) { 16413106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Lookup the number associated with the current node. 16423106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*,unsigned>::iterator I = Visited.find(N); 1643938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(I != Visited.end()); 16441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16453106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create the equivalent node in the new graph with the same state 16463106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // and location. 16479c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *NewN = GNew->getNode(N->getLocation(), N->getState()); 16481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16493106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Store the mapping to the original node. 16503106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*, const void*>::iterator IMitr=InverseMap.find(N); 16513106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(IMitr != InverseMap.end() && "No mapping to original node."); 1652c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu (*BM)[NewN] = (const ExplodedNode*) IMitr->second; 16531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16543106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Link up the new node with the previous node. 16553106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Last) 16565fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek NewN->addPredecessor(Last, *GNew); 16571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16583106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Last = NewN; 16591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16603106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Are we at the final node? 1661938332c657390d1e782e0adc03b092993edae962Ted Kremenek IndexMapTy::iterator IMI = 1662c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu IndexMap.find((const ExplodedNode*)(IMitr->second)); 1663938332c657390d1e782e0adc03b092993edae962Ted Kremenek if (IMI != IndexMap.end()) { 16643106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek First = NewN; 1665938332c657390d1e782e0adc03b092993edae962Ted Kremenek NodeIndex = IMI->second; 16663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 16673106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16693106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the next successor node. We choose the node that is marked 16703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // with the lowest DFS number. 1671c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode::const_succ_iterator SI = N->succ_begin(); 1672c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode::const_succ_iterator SE = N->succ_end(); 16733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek N = 0; 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16753106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek for (unsigned MinVal = 0; SI != SE; ++SI) { 16761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16773106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek I = Visited.find(*SI); 16781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (I == Visited.end()) 16803106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16823106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!N || I->second < MinVal) { 16833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek N = *SI; 16843106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MinVal = I->second; 16853106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16863106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1688938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(N); 16893106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1691938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(First); 1692938332c657390d1e782e0adc03b092993edae962Ted Kremenek 16933106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek return std::make_pair(std::make_pair(GNew, BM), 16943106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek std::make_pair(First, NodeIndex)); 16953106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 1696d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 16973106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek/// CompactPathDiagnostic - This function postprocesses a PathDiagnostic object 16983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek/// and collapses PathDiagosticPieces that are expanded by macros. 169977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenekstatic void CompactPathDiagnostic(PathPieces &path, const SourceManager& SM) { 17002042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek typedef std::vector<std::pair<IntrusiveRefCntPtr<PathDiagnosticMacroPiece>, 17012042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek SourceLocation> > MacroStackTy; 17021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1703c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmith typedef std::vector<IntrusiveRefCntPtr<PathDiagnosticPiece> > 17043106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PiecesTy; 17051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17063106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStackTy MacroStack; 17073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PiecesTy Pieces; 17081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 170977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek for (PathPieces::const_iterator I = path.begin(), E = path.end(); 17102042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek I!=E; ++I) { 171177d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 171277d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek PathDiagnosticPiece *piece = I->getPtr(); 171377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 171477d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek // Recursively compact calls. 171577d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek if (PathDiagnosticCallPiece *call=dyn_cast<PathDiagnosticCallPiece>(piece)){ 171677d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek CompactPathDiagnostic(call->path, SM); 171777d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek } 171877d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 17193106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Get the location of the PathDiagnosticPiece. 172077d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek const FullSourceLoc Loc = piece->getLocation().asLocation(); 17211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine the instantiation location, which is the location we group 17233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // related PathDiagnosticPieces. 17241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation InstantiationLoc = Loc.isMacroID() ? 1725402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SM.getExpansionLoc(Loc) : 17263106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation(); 17271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Loc.isFileID()) { 17293106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.clear(); 173077d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek Pieces.push_back(piece); 17313106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 17323106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1733706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek 17343106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(Loc.isMacroID()); 17351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17363106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Is the PathDiagnosticPiece within the same macro group? 17373106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!MacroStack.empty() && InstantiationLoc == MacroStack.back().second) { 173877d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek MacroStack.back().first->subPieces.push_back(piece); 17393106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 17403106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1741d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 17423106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // We aren't in the same group. Are we descending into a new macro 17433106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // or are part of an old one? 1744c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmith IntrusiveRefCntPtr<PathDiagnosticMacroPiece> MacroGroup; 1745d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 17463106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation ParentInstantiationLoc = InstantiationLoc.isMacroID() ? 1747402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SM.getExpansionLoc(Loc) : 17483106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation(); 17491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17503106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Walk the entire macro stack. 17513106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (!MacroStack.empty()) { 17523106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (InstantiationLoc == MacroStack.back().second) { 17533106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = MacroStack.back().first; 17543106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 17553106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 17561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17573106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (ParentInstantiationLoc == MacroStack.back().second) { 17583106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = MacroStack.back().first; 17593106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 176061f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 17611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17623106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.pop_back(); 17636837faa083bebad39aa342f84c2b450fb6410eafTed Kremenek } 17641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17653106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!MacroGroup || ParentInstantiationLoc == MacroStack.back().second) { 17663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create a new macro group and add it to the stack. 1767590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticMacroPiece *NewGroup = 1768590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks new PathDiagnosticMacroPiece( 176977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek PathDiagnosticLocation::createSingleLocation(piece->getLocation())); 17705a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek 17713106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (MacroGroup) 1772802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek MacroGroup->subPieces.push_back(NewGroup); 17733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek else { 17743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(InstantiationLoc.isFileID()); 17753106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Pieces.push_back(NewGroup); 17763106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 17771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17783106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = NewGroup; 17793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.push_back(std::make_pair(MacroGroup, InstantiationLoc)); 17807dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 17813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 17823106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Finally, add the PathDiagnosticPiece to the group. 178377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek MacroGroup->subPieces.push_back(piece); 17843106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 17851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17863106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Now take the pieces and construct a new PathDiagnostic. 178777d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek path.clear(); 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek for (PiecesTy::iterator I=Pieces.begin(), E=Pieces.end(); I!=E; ++I) 179077d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek path.push_back(*I); 179161f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 179261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 17933106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid GRBugReporter::GeneratePathDiagnostic(PathDiagnostic& PD, 17945f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<BugReport *> &bugReports) { 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek assert(!bugReports.empty()); 17975f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<const ExplodedNode *, 10> errorNodes; 17985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<BugReport*>::iterator I = bugReports.begin(), 179940406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek E = bugReports.end(); I != E; ++I) { 180040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek errorNodes.push_back((*I)->getErrorNode()); 180140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek } 18021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18033106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Construct a new graph that contains only a single path from the error 18041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // node to a root. 180538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const std::pair<std::pair<ExplodedGraph*, NodeBackMap*>, 1806c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::pair<ExplodedNode*, unsigned> >& 180740406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek GPair = MakeReportGraph(&getGraph(), errorNodes); 18081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18093106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the BugReport with the original location. 181040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek assert(GPair.second.second < bugReports.size()); 181140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *R = bugReports[GPair.second.second]; 18123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(R && "No original report found for sliced graph."); 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18146f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ExplodedGraph> ReportGraph(GPair.first.first); 18156f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<NodeBackMap> BackMap(GPair.first.second); 1816c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu const ExplodedNode *N = GPair.second.first; 18171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Start building the path diagnostic... 1819ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticBuilder PDB(*this, R, BackMap.get(), 1820ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie getPathDiagnosticConsumer()); 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18228e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Register additional node visitors. 182350bbc165b063155cc23c360deb7b865502e068e2Anna Zaks R->addVisitor(new NilReceiverBRVisitor()); 182450bbc165b063155cc23c360deb7b865502e068e2Anna Zaks R->addVisitor(new ConditionBRVisitor()); 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18263bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose BugReport::VisitorList visitors; 18273bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose unsigned originalReportConfigToken, finalReportConfigToken; 18283bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 18293bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // While generating diagnostics, it's possible the visitors will decide 18303bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // new symbols and regions are interesting, or add other visitors based on 18313bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // the information they find. If they do, we need to regenerate the path 18323bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // based on our new report configuration. 18333bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose do { 18343bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // Get a clean copy of all the visitors. 18353bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose for (BugReport::visitor_iterator I = R->visitor_begin(), 18363bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose E = R->visitor_end(); I != E; ++I) 18373bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose visitors.push_back((*I)->clone()); 18383bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 18393bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // Clear out the active path from any previous work. 18403bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose PD.getActivePath().clear(); 18413bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose originalReportConfigToken = R->getConfigurationChangeToken(); 18423bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 18433bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // Generate the very last diagnostic piece - the piece is visible before 18443bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // the trace is expanded. 18453bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose PathDiagnosticPiece *LastPiece = 0; 18463bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose for (BugReport::visitor_iterator I = visitors.begin(), E = visitors.end(); 18473bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose I != E; ++I) { 18483bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose if (PathDiagnosticPiece *Piece = (*I)->getEndPath(PDB, N, *R)) { 18493bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose assert (!LastPiece && 18503bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose "There can only be one final piece in a diagnostic."); 18513bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose LastPiece = Piece; 18523bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose } 185323f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks } 18543bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose if (!LastPiece) 18553bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose LastPiece = BugReporterVisitor::getDefaultEndPath(PDB, N, *R); 18563bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose if (LastPiece) 18573bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose PD.getActivePath().push_back(LastPiece); 18583bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose else 18593bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose return; 186023f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks 18613bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose switch (PDB.getGenerationScheme()) { 1862ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie case PathDiagnosticConsumer::Extensive: 18633bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose GenerateExtensivePathDiagnostic(PD, PDB, N, visitors); 18645fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek break; 1865ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie case PathDiagnosticConsumer::Minimal: 18663bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose GenerateMinimalPathDiagnostic(PD, PDB, N, visitors); 18673106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 18683bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose } 18693bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 18703bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // Clean up the visitors we used. 18713bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose llvm::DeleteContainerPointers(visitors); 18723bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 18733bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose // Did anything change while generating this path? 18743bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose finalReportConfigToken = R->getConfigurationChangeToken(); 18753bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose } while(finalReportConfigToken != originalReportConfigToken); 18763bc75ca0a636efdc93471c9b6bad43085a22bf3aJordy Rose 1877c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // Finally, prune the diagnostic path of uninteresting stuff. 1878ed7948b55fa4b2505f240cc5287137f451172b4cTed Kremenek if (R->shouldPrunePath()) { 1879ed7948b55fa4b2505f240cc5287137f451172b4cTed Kremenek bool hasSomethingInteresting = RemoveUneededCalls(PD.getMutablePieces()); 1880ed7948b55fa4b2505f240cc5287137f451172b4cTed Kremenek assert(hasSomethingInteresting); 1881ed7948b55fa4b2505f240cc5287137f451172b4cTed Kremenek (void) hasSomethingInteresting; 1882ed7948b55fa4b2505f240cc5287137f451172b4cTed Kremenek } 18833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 18841aa44c7c9198796085b77c6bdd7c90030845a688Ted Kremenek 1885cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenekvoid BugReporter::Register(BugType *BT) { 18863baf672378f105602d2b12f03f00277ae1936fe9Ted Kremenek BugTypes = F.add(BugTypes, BT); 188776d90c8bf83d071fd1bdbffa6d9f2af87c6bb7b5Ted Kremenek} 188876d90c8bf83d071fd1bdbffa6d9f2af87c6bb7b5Ted Kremenek 18891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid BugReporter::EmitReport(BugReport* R) { 1890cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek // Compute the bug report's hash to determine its equivalence class. 1891cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek llvm::FoldingSetNodeID ID; 1892cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek R->Profile(ID); 18931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Lookup the equivance class. If there isn't one, create it. 1895cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BugType& BT = R->getBugType(); 1896cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek Register(&BT); 1897cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek void *InsertPos; 1898404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass* EQ = EQClasses.FindNodeOrInsertPos(ID, InsertPos); 18991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1900cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!EQ) { 1901cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EQ = new BugReportEquivClass(R); 1902404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EQClasses.InsertNode(EQ, InsertPos); 19033b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks EQClassesVector.push_back(EQ); 1904cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek } 1905cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1906cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EQ->AddReport(R); 190761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 190861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 190906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 191006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek//===----------------------------------------------------------------------===// 191106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek// Emitting reports in equivalence classes. 191206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek//===----------------------------------------------------------------------===// 191306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 191406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremeneknamespace { 1915ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamstruct FRIEC_WLItem { 191606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek const ExplodedNode *N; 191706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek ExplodedNode::const_succ_iterator I, E; 191806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 191906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek FRIEC_WLItem(const ExplodedNode *n) 192006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek : N(n), I(N->succ_begin()), E(N->succ_end()) {} 192106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek}; 192206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek} 192306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 192461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenekstatic BugReport * 192561f52bd3c524268e25b48a1ed3730aedd6cc8374Ted KremenekFindReportInEquivalenceClass(BugReportEquivClass& EQ, 19265f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<BugReport*> &bugReports) { 192761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 192806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek BugReportEquivClass::iterator I = EQ.begin(), E = EQ.end(); 192906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek assert(I != E); 19304a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer BugType& BT = I->getBugType(); 193161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 193240406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // If we don't need to suppress any of the nodes because they are 193340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // post-dominated by a sink, simply add all the nodes in the equivalence class 193440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // to 'Nodes'. Any of the reports will serve as a "representative" report. 193561f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!BT.isSuppressOnSink()) { 19364a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer BugReport *R = I; 193761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek for (BugReportEquivClass::iterator I=EQ.begin(), E=EQ.end(); I!=E; ++I) { 19389c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N = I->getErrorNode(); 193961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (N) { 19404a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer R = I; 194140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek bugReports.push_back(R); 194261f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 194361f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 194406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek return R; 194561f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 194661f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 194706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // For bug reports that should be suppressed when all paths are post-dominated 194806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // by a sink node, iterate through the reports in the equivalence class 194906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // until we find one that isn't post-dominated (if one exists). We use a 195006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // DFS traversal of the ExplodedGraph to find a non-sink node. We could write 195106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // this as a recursive function, but we don't want to risk blowing out the 195206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // stack for very long paths. 195340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *exampleReport = 0; 195461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 195506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek for (; I != E; ++I) { 19564a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer const ExplodedNode *errorNode = I->getErrorNode(); 195706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 195840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!errorNode) 195906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek continue; 196040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (errorNode->isSink()) { 1961b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable( 196206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek "BugType::isSuppressSink() should not be 'true' for sink end nodes"); 196306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 196461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // No successors? By definition this nodes isn't post-dominated by a sink. 196540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (errorNode->succ_empty()) { 19664a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer bugReports.push_back(I); 196740406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 19684a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer exampleReport = I; 196961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek continue; 197061f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 197161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 197206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // At this point we know that 'N' is not a sink and it has at least one 197306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // successor. Use a DFS worklist to find a non-sink end-of-path node. 197406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek typedef FRIEC_WLItem WLItem; 19755f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef SmallVector<WLItem, 10> DFSWorkList; 197606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek llvm::DenseMap<const ExplodedNode *, unsigned> Visited; 197706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 197806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek DFSWorkList WL; 197940406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek WL.push_back(errorNode); 198040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek Visited[errorNode] = 1; 198106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 198206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek while (!WL.empty()) { 198306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WLItem &WI = WL.back(); 198406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek assert(!WI.N->succ_empty()); 198506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 198606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek for (; WI.I != WI.E; ++WI.I) { 198706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek const ExplodedNode *Succ = *WI.I; 198806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // End-of-path node? 198906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek if (Succ->succ_empty()) { 199061f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // If we found an end-of-path node that is not a sink. 199161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!Succ->isSink()) { 19924a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer bugReports.push_back(I); 199340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 19944a5f724538cbc275370c9504e8169ce92503256cBenjamin Kramer exampleReport = I; 199561f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek WL.clear(); 199661f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek break; 199761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 199806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // Found a sink? Continue on to the next successor. 199906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek continue; 200006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 200106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // Mark the successor as visited. If it hasn't been explored, 200206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // enqueue it to the DFS worklist. 200306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek unsigned &mark = Visited[Succ]; 200406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek if (!mark) { 200506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek mark = 1; 200606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WL.push_back(Succ); 200706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek break; 200806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 200906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 201061f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 201161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // The worklist may have been cleared at this point. First 201261f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // check if it is empty before checking the last item. 201361f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!WL.empty() && &WL.back() == &WI) 201406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WL.pop_back(); 201506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 201606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 201706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 201861f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // ExampleReport will be NULL if all the nodes in the equivalence class 201961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // were post-dominated by sinks. 202040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek return exampleReport; 202161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek} 2022e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2023e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek//===----------------------------------------------------------------------===// 2024e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek// DiagnosticCache. This is a hack to cache analyzer diagnostics. It 2025e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek// uses global state, which eventually should go elsewhere. 2026e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek//===----------------------------------------------------------------------===// 2027e0a58073b76fc016325a35152533b8468df2bf4aTed Kremeneknamespace { 2028ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass DiagCacheItem : public llvm::FoldingSetNode { 2029e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek llvm::FoldingSetNodeID ID; 2030e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenekpublic: 2031e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DiagCacheItem(BugReport *R, PathDiagnostic *PD) { 20324522e2a9e7fa0313e8e5a388d8f0ab66feccc6afAnna Zaks R->Profile(ID); 20334522e2a9e7fa0313e8e5a388d8f0ab66feccc6afAnna Zaks PD->Profile(ID); 2034e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 2035e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2036e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek void Profile(llvm::FoldingSetNodeID &id) { 2037e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek id = ID; 2038e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 2039e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2040e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek llvm::FoldingSetNodeID &getID() { return ID; } 2041e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek}; 2042e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek} 2043e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2044e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenekstatic bool IsCachedDiagnostic(BugReport *R, PathDiagnostic *PD) { 2045e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // FIXME: Eventually this diagnostic cache should reside in something 2046e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // like AnalysisManager instead of being a static variable. This is 2047e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // really unsafe in the long term. 2048e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek typedef llvm::FoldingSet<DiagCacheItem> DiagnosticCache; 2049e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek static DiagnosticCache DC; 2050e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2051e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek void *InsertPos; 2052e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DiagCacheItem *Item = new DiagCacheItem(R, PD); 2053e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2054e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek if (DC.FindNodeOrInsertPos(Item->getID(), InsertPos)) { 2055e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek delete Item; 2056e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek return true; 2057e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 2058e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2059e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DC.InsertNode(Item, InsertPos); 2060e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek return false; 2061e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek} 2062e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2063cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenekvoid BugReporter::FlushReport(BugReportEquivClass& EQ) { 20645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<BugReport*, 10> bugReports; 206540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *exampleReport = FindReportInEquivalenceClass(EQ, bugReports); 206640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 206706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek return; 206806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 2069ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer* PD = getPathDiagnosticConsumer(); 20701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2071cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek // FIXME: Make sure we use the 'R' for the path that was actually used. 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Probably doesn't make a difference in practice. 207340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugType& BT = exampleReport->getBugType(); 20741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20756f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PathDiagnostic> 207607189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek D(new PathDiagnostic(exampleReport->getDeclWithIssue(), 207707189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek exampleReport->getBugType().getName(), 2078da0e8429a3598acfdd0ecf15135d432e4dd3517cTed Kremenek !PD || PD->useVerboseDescription() 207940406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek ? exampleReport->getDescription() 208040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek : exampleReport->getShortDescription(), 2081d49967f8764135ae65658e354b6d38e3637c9de3Ted Kremenek BT.getCategory())); 2082d49967f8764135ae65658e354b6d38e3637c9de3Ted Kremenek 208340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!bugReports.empty()) 208440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek GeneratePathDiagnostic(*D.get(), bugReports); 2085e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 2086072192bcbb05a0fee7ec3061750b27e8d2004952Ted Kremenek // Get the meta data. 20877f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks const BugReport::ExtraTextList &Meta = 20887f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks exampleReport->getExtraText(); 20897f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks for (BugReport::ExtraTextList::const_iterator i = Meta.begin(), 20907f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks e = Meta.end(); i != e; ++i) { 20917f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks D->addMeta(*i); 20927f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks } 209375840e1501563fe7c3dcb5600b75965ba1fe1bc4Ted Kremenek 20943148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek // Emit a summary diagnostic to the regular Diagnostics engine. 2095640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis BugReport::ranges_iterator Beg, End; 2096640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis llvm::tie(Beg, End) = exampleReport->getRanges(); 2097d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &Diag = getDiagnostic(); 2098c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek 209988fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek if (!IsCachedDiagnostic(exampleReport, D.get())) { 210088fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek // Search the description for '%', as that will be interpretted as a 210188fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek // format character by FormatDiagnostics. 210288fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek StringRef desc = exampleReport->getShortDescription(); 210388fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek 2104f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<512> TmpStr; 2105c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek llvm::raw_svector_ostream Out(TmpStr); 210688fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek for (StringRef::iterator I=desc.begin(), E=desc.end(); I!=E; ++I) { 2107c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek if (*I == '%') 2108c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out << "%%"; 2109c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek else 2110c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out << *I; 211188fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek } 2112c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek 2113c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out.flush(); 211488fc18120ca14b82bef695d6440f51e4c468916cTed Kremenek unsigned ErrorDiag = Diag.getCustomDiagID(DiagnosticsEngine::Warning, TmpStr); 21150a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner 2116590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks DiagnosticBuilder diagBuilder = Diag.Report( 2117590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getLocation(getSourceManager()).asLocation(), ErrorDiag); 2118640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis for (BugReport::ranges_iterator I = Beg; I != End; ++I) 2119b6b7e7bff3101062521de6e79533a3c25e2195d9Argyrios Kyrtzidis diagBuilder << *I; 21202f0e89ea96292d2974eb1a7dddc0e9870aa86bb7Ted Kremenek } 21213148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek 2122ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie // Emit a full diagnostic for the path if we have a PathDiagnosticConsumer. 21233148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek if (!PD) 21243148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek return; 21251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2126802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek if (D->path.empty()) { 2127590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticPiece *piece = new PathDiagnosticEventPiece( 2128590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getLocation(getSourceManager()), 2129590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getDescription()); 213007189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek for ( ; Beg != End; ++Beg) 213107189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek piece->addRange(*Beg); 21321fbfd5b9b8b82aea084773b76dd1ec6796a7000cTed Kremenek 21332042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek D->getActivePath().push_back(piece); 21343148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek } 21351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21363148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek PD->HandlePathDiagnostic(D.take()); 213761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 213857202071e477530e9348bc76671ee369b2399b92Ted Kremenek 213907189521a15d9c088216b943649cb9fe231cbb57Ted Kremenekvoid BugReporter::EmitBasicReport(const Decl *DeclWithIssue, 214007189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek StringRef name, 21415f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef category, 2142590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks StringRef str, PathDiagnosticLocation Loc, 21438c036c7f77d69f96df49219ed0bdbade200d52ebTed Kremenek SourceRange* RBeg, unsigned NumRanges) { 21441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2145404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // 'BT' is owned by BugReporter. 2146404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugType *BT = getBugTypeForName(name, category); 2147590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks BugReport *R = new BugReport(*BT, str, Loc); 214807189521a15d9c088216b943649cb9fe231cbb57Ted Kremenek R->setDeclWithIssue(DeclWithIssue); 2149cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek for ( ; NumRanges > 0 ; --NumRanges, ++RBeg) R->addRange(*RBeg); 2150cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EmitReport(R); 2151cabe66811fe43835b8c5a0854552768fc53261e3Ted Kremenek} 2152404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 21535f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerBugType *BugReporter::getBugTypeForName(StringRef name, 21545f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef category) { 2155f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<136> fullDesc; 2156404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis llvm::raw_svector_ostream(fullDesc) << name << ":" << category; 2157404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis llvm::StringMapEntry<BugType *> & 2158404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis entry = StrBugTypes.GetOrCreateValue(fullDesc); 2159404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugType *BT = entry.getValue(); 2160404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (!BT) { 2161404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BT = new BugType(name, category); 2162404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis entry.setValue(BT); 2163404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis } 2164404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis return BT; 2165404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis} 2166