BugReporter.cpp revision 56a938ff85a444eb3d30d2634d92ce5b1f6fae56
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(); 511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 52b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 5361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 5461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 55c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xustatic inline const ExplodedNode* 569c378f705405d37f49795d5e915989de774fe11fTed KremenekGetPredecessorNode(const ExplodedNode *N) { 57b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return N->pred_empty() ? NULL : *(N->pred_begin()); 58706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek} 59706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek 60c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xustatic inline const ExplodedNode* 619c378f705405d37f49795d5e915989de774fe11fTed KremenekGetSuccessorNode(const ExplodedNode *N) { 62b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return N->succ_empty() ? NULL : *(N->succ_begin()); 63bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek} 642673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek 659c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic const Stmt *GetPreviousStmt(const ExplodedNode *N) { 66b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek for (N = GetPredecessorNode(N); N; N = GetPredecessorNode(N)) 675f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 68b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 70b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 71b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek} 72b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek 739c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic const Stmt *GetNextStmt(const ExplodedNode *N) { 74b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek for (N = GetSuccessorNode(N); N; N = GetSuccessorNode(N)) 755f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) { 76f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek // Check if the statement is '?' or '&&'/'||'. These are "merges", 77f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek // not actual statement points. 78f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek switch (S->getStmtClass()) { 79f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::ChooseExprClass: 8056ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: continue; 81f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::ConditionalOperatorClass: continue; 82f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek case Stmt::BinaryOperatorClass: { 832de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall BinaryOperatorKind Op = cast<BinaryOperator>(S)->getOpcode(); 842de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (Op == BO_LAnd || Op == BO_LOr) 85f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek continue; 86f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek break; 87f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 88f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek default: 89f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek break; 90f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 91b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 92f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return 0; 95bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek} 96bd7efa8ca27ed9676acf00abf31d5e1cd54651ccTed Kremenek 975f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenekstatic inline const Stmt* 989c378f705405d37f49795d5e915989de774fe11fTed KremenekGetCurrentOrPreviousStmt(const ExplodedNode *N) { 995f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 100b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 1011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 102b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return GetPreviousStmt(N); 103b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek} 1041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1055f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenekstatic inline const Stmt* 1069c378f705405d37f49795d5e915989de774fe11fTed KremenekGetCurrentOrNextStmt(const ExplodedNode *N) { 1075f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetStmt(N->getLocation())) 108b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return S; 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek return GetNextStmt(N); 1113148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek} 1123148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek 113b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek//===----------------------------------------------------------------------===// 114c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek// Diagnostic cleanup. 115c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek//===----------------------------------------------------------------------===// 116c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 117c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// Recursively scan through a path and prune out calls and macros pieces 118c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// that aren't needed. Return true if afterwards the path contains 119c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek/// "interesting stuff" which means it should be pruned from the parent path. 120c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenekstatic bool RemoveUneededCalls(PathPieces &pieces) { 121c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek bool containsSomethingInteresting = false; 122c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek const unsigned N = pieces.size(); 123c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 124c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek for (unsigned i = 0 ; i < N ; ++i) { 125c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // Remove the front piece from the path. If it is still something we 126c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // want to keep once we are done, we will push it back on the end. 127c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek IntrusiveRefCntPtr<PathDiagnosticPiece> piece(pieces.front()); 128c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek pieces.pop_front(); 129c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 130725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek switch (piece->getKind()) { 131725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Call: { 132725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticCallPiece *call = cast<PathDiagnosticCallPiece>(piece); 133725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // Recursively clean out the subclass. Keep this call around if 134725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // it contains any informative diagnostics. 135725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek if (!RemoveUneededCalls(call->path)) 136725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek continue; 137725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek containsSomethingInteresting = true; 138725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 139725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 140725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Macro: { 141725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticMacroPiece *macro = cast<PathDiagnosticMacroPiece>(piece); 142725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek if (!RemoveUneededCalls(macro->subPieces)) 143725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek continue; 144c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek containsSomethingInteresting = true; 145725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 146725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 147725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::Event: { 148725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek PathDiagnosticEventPiece *event = cast<PathDiagnosticEventPiece>(piece); 149725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // We never throw away an event, but we do throw it away wholesale 150725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek // as part of a path if we throw the entire path away. 15176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (event->isPrunable()) 15276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek continue; 15376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek containsSomethingInteresting = true; 154725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 155725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek } 156725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek case PathDiagnosticPiece::ControlFlow: 157725167443808efdc39a99f4eb132a0ae64ac5118Ted Kremenek break; 158c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek } 159c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 160c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek pieces.push_back(piece); 161c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek } 162c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 163c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek return containsSomethingInteresting; 164c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek} 165c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 166c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek//===----------------------------------------------------------------------===// 1673106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// PathDiagnosticBuilder and its associated routines and helper objects. 168b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek//===----------------------------------------------------------------------===// 169b479dadea93b93d3f0a335c3518b703f140b3f50Ted Kremenek 170c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xutypedef llvm::DenseMap<const ExplodedNode*, 171c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xuconst ExplodedNode*> NodeBackMap; 1727dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek 173babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremeneknamespace { 174ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass NodeMapClosure : public BugReport::NodeResolver { 1757dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeBackMap& M; 1767dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenekpublic: 1777dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeMapClosure(NodeBackMap *m) : M(*m) {} 1787dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek ~NodeMapClosure() {} 1791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *getOriginalNode(const ExplodedNode *N) { 1817dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeBackMap::iterator I = M.find(N); 1827dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek return I == M.end() ? 0 : I->second; 1837dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 1847dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek}; 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 186ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass PathDiagnosticBuilder : public BugReporterContext { 1877dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek BugReport *R; 188ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer *PDC; 1896f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ParentMap> PM; 1907dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek NodeMapClosure NMC; 1911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumppublic: 19259950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek const LocationContext *LC; 19359950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek 1948966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek PathDiagnosticBuilder(GRBugReporter &br, 1951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump BugReport *r, NodeBackMap *Backmap, 196ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer *pdc) 1978966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek : BugReporterContext(br), 19859950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek R(r), PDC(pdc), NMC(Backmap), LC(r->getErrorNode()->getLocationContext()) 19959950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek {} 2001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2019c378f705405d37f49795d5e915989de774fe11fTed Kremenek PathDiagnosticLocation ExecutionContinues(const ExplodedNode *N); 2021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2039c378f705405d37f49795d5e915989de774fe11fTed Kremenek PathDiagnosticLocation ExecutionContinues(llvm::raw_string_ostream &os, 2049c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N); 2051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2068e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *getBugReport() { return R; } 2078e6431adab313e283a992698f6fc7afe62420999Anna Zaks 208212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care Decl const &getCodeDecl() { return R->getErrorNode()->getCodeDecl(); } 20959950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek 21059950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek ParentMap& getParentMap() { return LC->getParentMap(); } 2111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 212c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek const Stmt *getParent(const Stmt *S) { 213c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek return getParentMap().getParent(S); 214c3f83ad7adaff2623986aa1c3e57833babd03d50Ted Kremenek } 2151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2168966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek virtual NodeMapClosure& getNodeResolver() { return NMC; } 2177297134f128423fce2e88f92421ed135bded7d4eDouglas Gregor 218d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek PathDiagnosticLocation getEnclosingStmtLocation(const Stmt *S); 2191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 220ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer::PathGenerationScheme getGenerationScheme() const { 221ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie return PDC ? PDC->getGenerationScheme() : PathDiagnosticConsumer::Extensive; 2227dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 2237dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek 224babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek bool supportsLogicalOpControlFlow() const { 225babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek return PDC ? PDC->supportsLogicalOpControlFlow() : true; 2261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 227babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek}; 228babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek} // end anonymous namespace 229babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek 23000605e0f011ed99225a22026344c5fc1b3212cd7Ted KremenekPathDiagnosticLocation 2319c378f705405d37f49795d5e915989de774fe11fTed KremenekPathDiagnosticBuilder::ExecutionContinues(const ExplodedNode *N) { 2325f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (const Stmt *S = GetNextStmt(N)) 23359950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek return PathDiagnosticLocation(S, getSourceManager(), LC); 23400605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek 2350cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks return PathDiagnosticLocation::createDeclEnd(N->getLocationContext(), 2360cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks getSourceManager()); 237082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek} 2381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23900605e0f011ed99225a22026344c5fc1b3212cd7Ted KremenekPathDiagnosticLocation 2409c378f705405d37f49795d5e915989de774fe11fTed KremenekPathDiagnosticBuilder::ExecutionContinues(llvm::raw_string_ostream &os, 2419c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N) { 242babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek 243143ca222583a4a355fdc89af852deef287499300Ted Kremenek // Slow, but probably doesn't matter. 244b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek if (os.str().empty()) 245b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek os << ' '; 2461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24700605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek const PathDiagnosticLocation &Loc = ExecutionContinues(N); 2481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24900605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek if (Loc.asStmt()) 250b697b100f2354ac84b7a0785cab9481e8bfdcf23Ted Kremenek os << "Execution continues on line " 251642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << getSourceManager().getExpansionLineNumber(Loc.asLocation()) 2528966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek << '.'; 2534f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else { 2544f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "Execution jumps to the end of the "; 2554f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek const Decl *D = N->getLocationContext()->getDecl(); 2564f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek if (isa<ObjCMethodDecl>(D)) 2574f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "method"; 2584f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else if (isa<FunctionDecl>(D)) 2594f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "function"; 2604f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek else { 2614f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek assert(isa<BlockDecl>(D)); 2624f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << "anonymous block"; 2634f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek } 2644f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek os << '.'; 2654f1db537722e8d46146cd95f5962a6dcf6e44e54Ted Kremenek } 2661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 267082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek return Loc; 268143ca222583a4a355fdc89af852deef287499300Ted Kremenek} 269143ca222583a4a355fdc89af852deef287499300Ted Kremenek 270ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenekstatic bool IsNested(const Stmt *S, ParentMap &PM) { 271ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (isa<Expr>(S) && PM.isConsumedExpr(cast<Expr>(S))) 272ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek return true; 2731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 274ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek const Stmt *Parent = PM.getParentIgnoreParens(S); 2751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 276ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (Parent) 277ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek switch (Parent->getStmtClass()) { 278ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::ForStmtClass: 279ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::DoStmtClass: 280ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek case Stmt::WhileStmtClass: 281ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek return true; 282ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek default: 283ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek break; 284ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek } 2851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return false; 287ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek} 288ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek 289d8c938b0f6b7a7156181be575239e4c6e15a2adbTed KremenekPathDiagnosticLocation 290d8c938b0f6b7a7156181be575239e4c6e15a2adbTed KremenekPathDiagnosticBuilder::getEnclosingStmtLocation(const Stmt *S) { 2919c378f705405d37f49795d5e915989de774fe11fTed Kremenek assert(S && "Null Stmt *passed to getEnclosingStmtLocation"); 2921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ParentMap &P = getParentMap(); 2938966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek SourceManager &SMgr = getSourceManager(); 294e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 295ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek while (IsNested(S, P)) { 2968c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const Stmt *Parent = P.getParentIgnoreParens(S); 2971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 298af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (!Parent) 299af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 3001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 301af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek switch (Parent->getStmtClass()) { 3025fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek case Stmt::BinaryOperatorClass: { 3035fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek const BinaryOperator *B = cast<BinaryOperator>(Parent); 3045fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (B->isLogicalOp()) 305220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3065fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek break; 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 308af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::CompoundStmtClass: 309af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::StmtExprClass: 310220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3111d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek case Stmt::ChooseExprClass: 3121d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // Similar to '?' if we are referring to condition, just have the edge 3131d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // point to the entire choose expression. 3141d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek if (cast<ChooseExpr>(Parent)->getCond() == S) 315220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 3161d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek else 317220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 31856ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 3191d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek case Stmt::ConditionalOperatorClass: 3201d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // For '?', if we are referring to condition, just have the edge point 3211d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek // to the entire '?' expression. 32256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (cast<AbstractConditionalOperator>(Parent)->getCond() == S) 323220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 3241d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek else 325220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 326af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::DoStmtClass: 327220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 328af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::ForStmtClass: 329af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<ForStmt>(Parent)->getBody() == S) 330220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump break; 332af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::IfStmtClass: 333af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<IfStmt>(Parent)->getCond() != S) 334220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 3358bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek break; 336af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 337af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<ObjCForCollectionStmt>(Parent)->getBody() == S) 338220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 339af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 340af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek case Stmt::WhileStmtClass: 341af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek if (cast<WhileStmt>(Parent)->getCond() != S) 342220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 343af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 344af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek default: 345af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek break; 346af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek } 347af3e3d54e990b385e5a653d2994d7d41427a13b8Ted Kremenek 348d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek S = Parent; 349d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek } 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 351d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek assert(S && "Cannot have null Stmt for PathDiagnosticLocation"); 352e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 353e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // Special case: DeclStmts can appear in for statement declarations, in which 354e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // case the ForStmt is the context. 355e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (isa<DeclStmt>(S)) { 356e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (const Stmt *Parent = P.getParent(S)) { 357e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek switch (Parent->getStmtClass()) { 358e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek case Stmt::ForStmtClass: 359e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek case Stmt::ObjCForCollectionStmtClass: 360220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(Parent, SMgr, LC); 361e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek default: 362e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek break; 3631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 365e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 366e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek else if (isa<BinaryOperator>(S)) { 367e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // Special case: the binary operator represents the initialization 368e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // code in a for statement (this can happen when the variable being 369e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek // initialized is an old variable. 370e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (const ForStmt *FS = 371e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek dyn_cast_or_null<ForStmt>(P.getParentIgnoreParens(S))) { 372e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek if (FS->getInit() == S) 373220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(FS, SMgr, LC); 374e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 375e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek } 376e88a170da9219ef6a62d2182560c4de2ebffbd59Ted Kremenek 377220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks return PathDiagnosticLocation(S, SMgr, LC); 378d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek} 379d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 380cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 3813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// "Minimal" path diagnostic generation algorithm. 382cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 38356a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zakstypedef std::pair<PathDiagnosticCallPiece*, const ExplodedNode*> StackDiagPair; 38456a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zakstypedef SmallVector<StackDiagPair, 6> StackDiagVector; 38556a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks 386368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaksstatic void updateStackPiecesWithMessage(PathDiagnosticPiece *P, 38756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector &CallStack) { 388368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // If the piece contains a special message, add it to all the call 389368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // pieces on the active stack. 390368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (PathDiagnosticEventPiece *ep = 391368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks dyn_cast<PathDiagnosticEventPiece>(P)) { 392368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 39356a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks if (ep->hasCallStackHint()) 39456a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks for (StackDiagVector::iterator I = CallStack.begin(), 39556a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks E = CallStack.end(); I != E; ++I) { 39656a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks PathDiagnosticCallPiece *CP = I->first; 39756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks const ExplodedNode *N = I->second; 39856a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StringRef stackMsg = ep->getCallStackMessage(N); 39956a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks 400368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // The last message on the path to final bug is the most important 401368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // one. Since we traverse the path backwards, do not add the message 402368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks // if one has been previously added. 40356a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks if (!CP->hasCallStackMessage()) 40456a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks CP->setCallStackMessage(stackMsg); 40556a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks } 406368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 407368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks} 408cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 40977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenekstatic void CompactPathDiagnostic(PathPieces &path, const SourceManager& SM); 41014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 4113106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekstatic void GenerateMinimalPathDiagnostic(PathDiagnostic& PD, 4123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticBuilder &PDB, 413c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu const ExplodedNode *N) { 4148966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek 4153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceManager& SMgr = PDB.getSourceManager(); 41659950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek const LocationContext *LC = PDB.LC; 4179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *NextNode = N->pred_empty() 4183106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek ? NULL : *(N->pred_begin()); 419368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 42056a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector CallStack; 421368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 4223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (NextNode) { 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump N = NextNode; 42459950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PDB.LC = N->getLocationContext(); 4253106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek NextNode = GetPredecessorNode(N); 4261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek ProgramPoint P = N->getLocation(); 4282042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek 4292042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek if (const CallExit *CE = dyn_cast<CallExit>(&P)) { 4302042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece *C = 4312042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece::construct(N, *CE, SMgr); 4322042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(C); 4332042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.pushActivePath(&C->path); 43456a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks CallStack.push_back(StackDiagPair(C, N)); 4352042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek continue; 4362042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 4372042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek 4382042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek if (const CallEnter *CE = dyn_cast<CallEnter>(&P)) { 4392042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.popActivePath(); 4402042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // The current active path should never be empty. Either we 4412042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // just added a bunch of stuff to the top-level path, or 4422042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // we have a previous CallExit. If the front of the active 4432042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path is not a PathDiagnosticCallPiece, it means that the 4442042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path terminated within a function call. We must then take the 4452042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // current contents of the active path and place it within 4462042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // a new PathDiagnosticCallPiece. 4472042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek assert(!PD.getActivePath().empty()); 4482042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece *C = 4492042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek dyn_cast<PathDiagnosticCallPiece>(PD.getActivePath().front()); 4509373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks if (!C) { 4519373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks const Decl *Caller = CE->getLocationContext()->getDecl(); 4529373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks C = PathDiagnosticCallPiece::construct(PD.getActivePath(), Caller); 4539373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks } 4542042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek C->setCallee(*CE, SMgr); 455368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (!CallStack.empty()) { 45656a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks assert(CallStack.back().first == C); 457368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks CallStack.pop_back(); 458368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 4592042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek continue; 4602042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4629c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const BlockEdge *BE = dyn_cast<BlockEdge>(&P)) { 4639c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Src = BE->getSrc(); 4649c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Dst = BE->getDst(); 4659c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *T = Src->getTerminator(); 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 46761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek if (!T) 46861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek continue; 4691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 470590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticLocation Start = 471590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticLocation::createBegin(T, SMgr, 472590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks N->getLocationContext()); 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek switch (T->getStmtClass()) { 47561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek default: 47661f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 4771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47861f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek case Stmt::GotoStmtClass: 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::IndirectGotoStmtClass: { 4809c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *S = GetNextStmt(N); 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek if (!S) 48361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek continue; 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 485297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 4861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::raw_string_ostream os(sbuf); 487d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek const PathDiagnosticLocation &End = PDB.getEnclosingStmtLocation(S); 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48900605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os << "Control jumps to line " 490642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 4912042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 492802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek os.str())); 49361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 49461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 4951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::SwitchStmtClass: { 49761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek // Figure out what case arm we took. 498297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 499297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 5001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5019c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *S = Dst->getLabel()) { 502220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(S, SMgr, LC); 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5045a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek switch (S->getStmtClass()) { 505082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek default: 506082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "No cases match in the switch statement. " 5073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek "Control jumps to line " 508642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 509082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 510082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek case Stmt::DefaultStmtClass: 511082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "Control jumps to the 'default' case at line " 512642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 513082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 5141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 515082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek case Stmt::CaseStmtClass: { 5161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os << "Control jumps to 'case "; 5179c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *Case = cast<CaseStmt>(S); 5189c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *LHS = Case->getLHS()->IgnoreParenCasts(); 5191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Determine if it is an enum. 521082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek bool GetRawInt = true; 5221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5239c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(LHS)) { 524082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek // FIXME: Maybe this should be an assertion. Are there cases 525082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek // were it is not an EnumConstantDecl? 5269c378f705405d37f49795d5e915989de774fe11fTed Kremenek const EnumConstantDecl *D = 52703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu dyn_cast<EnumConstantDecl>(DR->getDecl()); 5281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 529082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek if (D) { 530082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek GetRawInt = false; 531b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer os << *D; 532082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 5335a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek } 5349ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman 5359ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman if (GetRawInt) 536a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith os << LHS->EvaluateKnownConstInt(PDB.getASTContext()); 5379ec64d6e2fe575b297e1eaa5051efc2983373e25Eli Friedman 53800605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os << ":' at line " 539642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << End.asLocation().getExpansionLineNumber(); 540082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek break; 541082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 54261f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 5432042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 54400605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os.str())); 54561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 546567839273dfc395a459cbe77d5f8d128b9ae85bfTed Kremenek else { 547c3517ebb48a51e146badc08bc3684520c41da6c8Ted Kremenek os << "'Default' branch taken. "; 5481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const PathDiagnosticLocation &End = PDB.ExecutionContinues(os, N); 5492042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 55000605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek os.str())); 551567839273dfc395a459cbe77d5f8d128b9ae85bfTed Kremenek } 5521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek break; 55461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 5551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5562673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek case Stmt::BreakStmtClass: 5572673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek case Stmt::ContinueStmtClass: { 558297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 559297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 56000605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 5612042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 562082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os.str())); 5632673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek break; 5642673c9ff76ebdb72b7f846e2ff1e0f4256372e19Ted Kremenek } 5651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine control-flow for ternary '?'. 56756ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 568706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek case Stmt::ConditionalOperatorClass: { 569297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 570297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 5711d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek os << "'?' condition is "; 5721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 573706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek if (*(Src->succ_begin()+1) == Dst) 574082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "false"; 575706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek else 576082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os << "true"; 5771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 57800605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 5791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5801d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek if (const Stmt *S = End.asStmt()) 5811d9a23ac34fee297e28361653a72c519cb04a854Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 5821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5832042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 584babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek os.str())); 585babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek break; 586babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 5871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5883106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine control-flow for short-circuited '&&' and '||'. 589babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek case Stmt::BinaryOperatorClass: { 590babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek if (!PDB.supportsLogicalOpControlFlow()) 591babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek break; 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const BinaryOperator *B = cast<BinaryOperator>(T); 594babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek std::string sbuf; 595babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek llvm::raw_string_ostream os(sbuf); 596babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek os << "Left side of '"; 5971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5982de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall if (B->getOpcode() == BO_LAnd) { 599f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "&&" << "' is "; 6001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 601f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek if (*(Src->succ_begin()+1) == Dst) { 602f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "false"; 603220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(B->getLHS(), SMgr, LC); 6040cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation Start = 6050cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createOperatorLoc(B, SMgr); 6062042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 607f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os.str())); 6081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 609f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek else { 610f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "true"; 611220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation Start(B->getLHS(), SMgr, LC); 612f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6132042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 614f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os.str())); 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 616babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 617babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek else { 6182de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall assert(B->getOpcode() == BO_LOr); 619f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "||" << "' is "; 6201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 621f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek if (*(Src->succ_begin()+1) == Dst) { 622f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "false"; 623220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation Start(B->getLHS(), SMgr, LC); 624f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6252042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os.str())); 627f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 628f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek else { 629f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek os << "true"; 630220ac8c175cb1bf9b18d82eefe036995d7a2164dAnna Zaks PathDiagnosticLocation End(B->getLHS(), SMgr, LC); 6310cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation Start = 6320cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createOperatorLoc(B, SMgr); 6332042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump os.str())); 635f5ab8e6eb4b1c14cb3a0f69aad526192794c95ceTed Kremenek } 636babdd7b56d02e2b6924a2c93b061d6a48bb5f0caTed Kremenek } 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 638706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek break; 639706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek } 6401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::DoStmtClass: { 642706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek if (*(Src->succ_begin()) == Dst) { 643297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek std::string sbuf; 644297308eda369de400e6ea7057dffeadd9f92e385Ted Kremenek llvm::raw_string_ostream os(sbuf); 6451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 646c3517ebb48a51e146badc08bc3684520c41da6c8Ted Kremenek os << "Loop condition is true. "; 647d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 6481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 649d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek if (const Stmt *S = End.asStmt()) 650d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek End = PDB.getEnclosingStmtLocation(S); 6511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6522042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 653082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek os.str())); 654082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek } 655082cb8d7bd9bdb3fe58e8e1a2897c79c4ebcc3a7Ted Kremenek else { 65600605e0f011ed99225a22026344c5fc1b3212cd7Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 658d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek if (const Stmt *S = End.asStmt()) 659d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek End = PDB.getEnclosingStmtLocation(S); 6601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6612042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6623106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek "Loop condition is false. Exiting loop")); 6633106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6653106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 6663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6683106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek case Stmt::WhileStmtClass: 6691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump case Stmt::ForStmtClass: { 6703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (*(Src->succ_begin()+1) == Dst) { 6713106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek std::string sbuf; 6723106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::raw_string_ostream os(sbuf); 6731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek os << "Loop condition is false. "; 6753106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(os, N); 6763106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 6773106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 6781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6792042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6803106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek os.str())); 6813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6823106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek else { 6833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6843106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 6853106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 6861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6872042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 6885fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Loop condition is true. Entering loop body")); 6893106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6913106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 6923106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 6931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6943106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek case Stmt::IfStmtClass: { 6953106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PathDiagnosticLocation End = PDB.ExecutionContinues(N); 6961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6973106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (const Stmt *S = End.asStmt()) 6983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek End = PDB.getEnclosingStmtLocation(S); 6991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7003106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (*(Src->succ_begin()+1) == Dst) 7012042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 7025fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Taking false branch")); 7031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump else 7042042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(Start, End, 7055fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek "Taking true branch")); 7061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 7083106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7093106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7103106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 712dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek if (NextNode) { 7138e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Add diagnostic pieces from custom visitors. 7148e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *R = PDB.getBugReport(); 7158e6431adab313e283a992698f6fc7afe62420999Anna Zaks for (BugReport::visitor_iterator I = R->visitor_begin(), 7168e6431adab313e283a992698f6fc7afe62420999Anna Zaks E = R->visitor_end(); I!=E; ++I) { 717368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (PathDiagnosticPiece *p = (*I)->VisitNode(N, NextNode, PDB, *R)) { 7182042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 719368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks updateStackPiecesWithMessage(p, CallStack); 720368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 721dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 7228966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek } 7233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 7241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 72514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // After constructing the full PathDiagnostic, do a pass over it to compact 72614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // PathDiagnosticPieces that occur within a macro. 72777d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek CompactPathDiagnostic(PD.getMutablePieces(), PDB.getSourceManager()); 7283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 7293106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 7303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 7315fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek// "Extensive" PathDiagnostic generation. 7325fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek//===----------------------------------------------------------------------===// 7335fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek 7345fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenekstatic bool IsControlFlowExpr(const Stmt *S) { 7355fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek const Expr *E = dyn_cast<Expr>(S); 7361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7375fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (!E) 7385fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return false; 7391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump E = E->IgnoreParenCasts(); 7411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 74256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall if (isa<AbstractConditionalOperator>(E)) 7435fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return true; 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7455fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (const BinaryOperator *B = dyn_cast<BinaryOperator>(E)) 7465fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek if (B->isLogicalOp()) 7475fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek return true; 7481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return false; 7505fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek} 7515fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek 75214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremeneknamespace { 753ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass ContextLocation : public PathDiagnosticLocation { 7548f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool IsDead; 7558f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenekpublic: 7568f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek ContextLocation(const PathDiagnosticLocation &L, bool isdead = false) 7578f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek : PathDiagnosticLocation(L), IsDead(isdead) {} 7581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void markDead() { IsDead = true; } 7608f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool isDead() const { return IsDead; } 7618f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek}; 7621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 763ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass EdgeBuilder { 7648f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek std::vector<ContextLocation> CLocs; 7658f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek typedef std::vector<ContextLocation>::iterator iterator; 76614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnostic &PD; 76714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticBuilder &PDB; 76814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticLocation PrevLoc; 7691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7708f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek bool IsConsumedExpr(const PathDiagnosticLocation &L); 7711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek bool containsLocation(const PathDiagnosticLocation &Container, 77314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &Containee); 7741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticLocation getContextLocation(const PathDiagnosticLocation &L); 7761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7779650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek PathDiagnosticLocation cleanUpLocation(PathDiagnosticLocation L, 7789650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek bool firstCharOnly = false) { 7798c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek if (const Stmt *S = L.asStmt()) { 7809650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek const Stmt *Original = S; 7818c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek while (1) { 7828c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek // Adjust the location for some expressions that are best referenced 7838c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek // by one of their subexpressions. 7849650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek switch (S->getStmtClass()) { 7859650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek default: 7869650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek break; 7879650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ParenExprClass: 788f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne case Stmt::GenericSelectionExprClass: 789f111d935722ed488144600cea5ed03a6b5069e8fPeter Collingbourne S = cast<Expr>(S)->IgnoreParens(); 7909650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 7919650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 79256ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall case Stmt::BinaryConditionalOperatorClass: 7939650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ConditionalOperatorClass: 79456ca35d396d8692c384c785f9aeebcf22563fe1eJohn McCall S = cast<AbstractConditionalOperator>(S)->getCond(); 7959650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 7969650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 7979650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::ChooseExprClass: 7989650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek S = cast<ChooseExpr>(S)->getCond(); 7999650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 8009650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 8019650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek case Stmt::BinaryOperatorClass: 8029650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek S = cast<BinaryOperator>(S)->getLHS(); 8039650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek firstCharOnly = true; 8049650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek continue; 8059650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek } 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8079650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek break; 8088c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8109650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek if (S != Original) 81159950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek L = PathDiagnosticLocation(S, L.getManager(), PDB.LC); 8128c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8149650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek if (firstCharOnly) 8151531bb0c69d9afff6a6434e4cadf345eb628b287Anna Zaks L = PathDiagnosticLocation::createSingleLocation(L); 8169650cf3b08fcd66caae39bd5a1915c3eac735095Ted Kremenek 8178c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek return L; 8188c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek } 8191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void popLocation() { 8218f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (!CLocs.back().isDead() && CLocs.back().asLocation().isFileID()) { 8225c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek // For contexts, we only one the first character as the range. 82307c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek rawAddEdge(cleanUpLocation(CLocs.back(), true)); 8245c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek } 82514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.pop_back(); 82614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 8271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekpublic: 82914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek EdgeBuilder(PathDiagnostic &pd, PathDiagnosticBuilder &pdb) 83014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek : PD(pd), PDB(pdb) { 8311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 832a301a6773db085575ac51e3c966858180390c25bTed Kremenek // If the PathDiagnostic already has pieces, add the enclosing statement 833a301a6773db085575ac51e3c966858180390c25bTed Kremenek // of the first piece as a context as well. 834802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek if (!PD.path.empty()) { 835802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek PrevLoc = (*PD.path.begin())->getLocation(); 8361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 83714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = PrevLoc.asStmt()) 838e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addExtendedContext(PDB.getEnclosingStmtLocation(S).asStmt()); 83914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 84014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 84114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 84214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ~EdgeBuilder() { 84314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) popLocation(); 8440cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks 845a301a6773db085575ac51e3c966858180390c25bTed Kremenek // Finally, add an initial edge from the start location of the first 846a301a6773db085575ac51e3c966858180390c25bTed Kremenek // statement (if it doesn't already exist). 8470cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation L = PathDiagnosticLocation::createDeclBegin( 84859950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PDB.LC, 8490cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PDB.getSourceManager()); 8500cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks if (L.isValid()) 8510cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks rawAddEdge(L); 85214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 85314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 8545de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek void flushLocations() { 8555de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek while (!CLocs.empty()) 8565de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek popLocation(); 8575de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek PrevLoc = PathDiagnosticLocation(); 8585de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek } 8595de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 86014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void addEdge(PathDiagnosticLocation NewLoc, bool alwaysAdd = false); 8611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8628bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek void rawAddEdge(PathDiagnosticLocation NewLoc); 8631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 86414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek void addContext(const Stmt *S); 865e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek void addExtendedContext(const Stmt *S); 8661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 86714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} // end anonymous namespace 86814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 86914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 87014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted KremenekPathDiagnosticLocation 87114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted KremenekEdgeBuilder::getContextLocation(const PathDiagnosticLocation &L) { 87214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = L.asStmt()) { 87314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (IsControlFlowExpr(S)) 87414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return L; 8751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return PDB.getEnclosingStmtLocation(S); 87714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 8781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 87914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return L; 88014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 88114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 88214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekbool EdgeBuilder::containsLocation(const PathDiagnosticLocation &Container, 88314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &Containee) { 88414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 88514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (Container == Containee) 88614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 8871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 88814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (Container.asDecl()) 88914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 8901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *S = Containee.asStmt()) 89214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (const Stmt *ContainerS = Container.asStmt()) { 89314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (S) { 89414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (S == ContainerS) 89514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return true; 89614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek S = PDB.getParent(S); 89714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 89814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return false; 89914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 90014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 90114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Less accurate: compare using source ranges. 90214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceRange ContainerR = Container.asRange(); 90314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceRange ContaineeR = Containee.asRange(); 9041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 90514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek SourceManager &SM = PDB.getSourceManager(); 906402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContainerRBeg = SM.getExpansionLoc(ContainerR.getBegin()); 907402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContainerREnd = SM.getExpansionLoc(ContainerR.getEnd()); 908402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContaineeRBeg = SM.getExpansionLoc(ContaineeR.getBegin()); 909402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SourceLocation ContaineeREnd = SM.getExpansionLoc(ContaineeR.getEnd()); 9101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 911642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContainerBegLine = SM.getExpansionLineNumber(ContainerRBeg); 912642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContainerEndLine = SM.getExpansionLineNumber(ContainerREnd); 913642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContaineeBegLine = SM.getExpansionLineNumber(ContaineeRBeg); 914642116259e8df6286063a17361c20e95b5017a0aChandler Carruth unsigned ContaineeEndLine = SM.getExpansionLineNumber(ContaineeREnd); 9151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek assert(ContainerBegLine <= ContainerEndLine); 9171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(ContaineeBegLine <= ContaineeEndLine); 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 91914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return (ContainerBegLine <= ContaineeBegLine && 92014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ContainerEndLine >= ContaineeEndLine && 92114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek (ContainerBegLine != ContaineeBegLine || 922a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContainerRBeg) <= 923a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContaineeRBeg)) && 92414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek (ContainerEndLine != ContaineeEndLine || 925a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContainerREnd) >= 926a77c031cb66f75d22672070052cc6e0205289ff8Chandler Carruth SM.getExpansionColumnNumber(ContainerREnd))); 92714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 92814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 92914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::rawAddEdge(PathDiagnosticLocation NewLoc) { 93014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (!PrevLoc.isValid()) { 93114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PrevLoc = NewLoc; 93214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 93314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 9341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9358c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const PathDiagnosticLocation &NewLocClean = cleanUpLocation(NewLoc); 9368c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek const PathDiagnosticLocation &PrevLocClean = cleanUpLocation(PrevLoc); 9371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9388c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek if (NewLocClean.asLocation() == PrevLocClean.asLocation()) 93914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 9401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 94114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // FIXME: Ignore intra-macro edges for now. 942402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth if (NewLocClean.asLocation().getExpansionLoc() == 943402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth PrevLocClean.asLocation().getExpansionLoc()) 94414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 94514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 9462042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(new PathDiagnosticControlFlowPiece(NewLocClean, PrevLocClean)); 9478c8b0ad9601d6ccf3d7b2a3f77a896ef4fb4e6e9Ted Kremenek PrevLoc = NewLoc; 94814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 94914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 95014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::addEdge(PathDiagnosticLocation NewLoc, bool alwaysAdd) { 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 952a301a6773db085575ac51e3c966858180390c25bTed Kremenek if (!alwaysAdd && NewLoc.asLocation().isMacroID()) 953a301a6773db085575ac51e3c966858180390c25bTed Kremenek return; 9541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &CLoc = getContextLocation(NewLoc); 95614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 95714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) { 9588f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek ContextLocation &TopContextLoc = CLocs.back(); 9591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Is the top location context the same as the one for the new location? 96114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (TopContextLoc == CLoc) { 9628f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (alwaysAdd) { 9634c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek if (IsConsumedExpr(TopContextLoc) && 9644c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek !IsControlFlowExpr(TopContextLoc.asStmt())) 9658f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek TopContextLoc.markDead(); 9668f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek 96714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek rawAddEdge(NewLoc); 9688f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 96914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 97014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 97114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 97214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 97314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (containsLocation(TopContextLoc, CLoc)) { 9748f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (alwaysAdd) { 97514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek rawAddEdge(NewLoc); 9761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9774c6f8d38e2795c67048e16e737b8225eeb184262Ted Kremenek if (IsConsumedExpr(CLoc) && !IsControlFlowExpr(CLoc.asStmt())) { 9788f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek CLocs.push_back(ContextLocation(CLoc, true)); 9798f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return; 9808f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 9818f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek } 9821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 98314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(CLoc); 9841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return; 98514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 98614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 98714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Context does not contain the location. Flush it. 98814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek popLocation(); 98914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 9901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9915c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek // If we reach here, there is no enclosing context. Just add the edge. 9925c7168cbe8a0eabd05e0e12e469090d2cabd27c0Ted Kremenek rawAddEdge(NewLoc); 99314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 99414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 9958f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenekbool EdgeBuilder::IsConsumedExpr(const PathDiagnosticLocation &L) { 9968f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek if (const Expr *X = dyn_cast_or_null<Expr>(L.asStmt())) 9978f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return PDB.getParentMap().isConsumedExpr(X) && !IsControlFlowExpr(X); 9981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9998f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek return false; 10008f9b1b3865cd5814a8c4c768a34d56df6d6c93beTed Kremenek} 10011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1002e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenekvoid EdgeBuilder::addExtendedContext(const Stmt *S) { 1003e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (!S) 1004e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek return; 10051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *Parent = PDB.getParent(S); 1007e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek while (Parent) { 1008e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (isa<CompoundStmt>(Parent)) 1009e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek Parent = PDB.getParent(Parent); 1010e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek else 1011e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek break; 1012e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 1013e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek 1014e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek if (Parent) { 1015e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek switch (Parent->getStmtClass()) { 1016e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek case Stmt::DoStmtClass: 1017e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek case Stmt::ObjCAtSynchronizedStmtClass: 1018e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addContext(Parent); 1019e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek default: 1020e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek break; 1021e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 1022e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek } 10231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1024e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek addContext(S); 1025e1baed38437e08fee7ab372ba2579ce22da354c2Ted Kremenek} 10261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 102714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekvoid EdgeBuilder::addContext(const Stmt *S) { 102814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (!S) 102914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 103014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 103159950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PathDiagnosticLocation L(S, PDB.getSourceManager(), PDB.LC); 10321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 103314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (!CLocs.empty()) { 103414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek const PathDiagnosticLocation &TopContextLoc = CLocs.back(); 103514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 103614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Is the top location context the same as the one for the new location? 103714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (TopContextLoc == L) 103814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek return; 103914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 104014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek if (containsLocation(TopContextLoc, L)) { 104114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(L); 10421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return; 104314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 104414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 104514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek // Context does not contain the location. Flush it. 104614856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek popLocation(); 104714856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 104814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 104914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek CLocs.push_back(L); 105014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 105114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 105214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenekstatic void GenerateExtensivePathDiagnostic(PathDiagnostic& PD, 105314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek PathDiagnosticBuilder &PDB, 1054c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu const ExplodedNode *N) { 105514856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek EdgeBuilder EB(PD, PDB); 10560cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks const SourceManager& SM = PDB.getSourceManager(); 105756a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks StackDiagVector CallStack; 105814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 10599c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *NextNode = N->pred_empty() ? NULL : *(N->pred_begin()); 106014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek while (NextNode) { 106114856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek N = NextNode; 106214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek NextNode = GetPredecessorNode(N); 106314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek ProgramPoint P = N->getLocation(); 106414856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 1065dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek do { 10665de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek if (const CallExit *CE = dyn_cast<CallExit>(&P)) { 10675de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek const StackFrameContext *LCtx = 10685de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek CE->getLocationContext()->getCurrentStackFrame(); 10695de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek PathDiagnosticLocation Loc(LCtx->getCallSite(), 10705de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek PDB.getSourceManager(), 10715de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek LCtx); 10725de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek EB.addEdge(Loc, true); 10735de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek EB.flushLocations(); 10742042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece *C = 10752042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PathDiagnosticCallPiece::construct(N, *CE, SM); 10762042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(C); 10772042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.pushActivePath(&C->path); 107856a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks CallStack.push_back(StackDiagPair(C, N)); 10795de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek break; 10805de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek } 10814ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek 10822042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // Pop the call hierarchy if we are done walking the contents 10832042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // of a function call. 10842042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek if (const CallEnter *CE = dyn_cast<CallEnter>(&P)) { 1085097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek // Add an edge to the start of the function. 1086097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek const Decl *D = CE->getCalleeContext()->getDecl(); 1087097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek PathDiagnosticLocation pos = 1088097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek PathDiagnosticLocation::createBegin(D, SM); 1089097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek EB.addEdge(pos); 1090097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek 1091097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek // Flush all locations, and pop the active path. 10924ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek EB.flushLocations(); 10932042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.popActivePath(); 10944ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek assert(!PD.getActivePath().empty()); 10954ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek PDB.LC = N->getLocationContext(); 1096097ebb3d8ce55d1f78a3f1e7a0978dbde5ee2898Ted Kremenek 10972042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // The current active path should never be empty. Either we 10982042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // just added a bunch of stuff to the top-level path, or 10992042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // we have a previous CallExit. If the front of the active 11002042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path is not a PathDiagnosticCallPiece, it means that the 11012042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // path terminated within a function call. We must then take the 11022042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // current contents of the active path and place it within 11032042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek // a new PathDiagnosticCallPiece. 11044ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek PathDiagnosticCallPiece *C = 11052042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek dyn_cast<PathDiagnosticCallPiece>(PD.getActivePath().front()); 11069373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks if (!C) { 11079373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks const Decl * Caller = CE->getLocationContext()->getDecl(); 11089373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks C = PathDiagnosticCallPiece::construct(PD.getActivePath(), Caller); 11099373937945e1e075dfa08169eaccc1ad0b31f699Anna Zaks } 11102042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek C->setCallee(*CE, SM); 11112042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek EB.addContext(CE->getCallExpr()); 1112368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 1113368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks if (!CallStack.empty()) { 111456a938ff85a444eb3d30d2634d92ce5b1f6fae56Anna Zaks assert(CallStack.back().first == C); 1115368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks CallStack.pop_back(); 1116368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks } 11172042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek break; 11182042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek } 11194ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek 11204ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // Note that is important that we update the LocationContext 11214ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // after looking at CallExits. CallExit basically adds an 11224ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // edge in the *caller*, so we don't want to update the LocationContext 11234ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek // too soon. 11244ba86bc53bb280ba46a08459eda7d283d513b61fTed Kremenek PDB.LC = N->getLocationContext(); 11255de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 1126dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek // Block edges. 11275de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek if (const BlockEdge *BE = dyn_cast<BlockEdge>(&P)) { 1128dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek const CFGBlock &Blk = *BE->getSrc(); 1129dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek const Stmt *Term = Blk.getTerminator(); 11301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1131dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek // Are we jumping to the head of a loop? Add a special diagnostic. 1132ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (const Stmt *Loop = BE->getDst()->getLoopTarget()) { 113359950d3aa54ca5066b1fb08a8c79ebfe10e0919bTed Kremenek PathDiagnosticLocation L(Loop, SM, PDB.LC); 1134ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek const CompoundStmt *CS = NULL; 11351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1136ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (!Term) { 1137ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (const ForStmt *FS = dyn_cast<ForStmt>(Loop)) 1138ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek CS = dyn_cast<CompoundStmt>(FS->getBody()); 1139ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek else if (const WhileStmt *WS = dyn_cast<WhileStmt>(Loop)) 11401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CS = dyn_cast<CompoundStmt>(WS->getBody()); 1141ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek } 11421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1143dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek PathDiagnosticEventPiece *p = 1144dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek new PathDiagnosticEventPiece(L, 114507c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek "Looping back to the head of the loop"); 11462dd17abf11ae64339fa6bfaa57d76e13a5fbe5b8Ted Kremenek p->setPrunable(true); 11471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1148dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek EB.addEdge(p->getLocation(), true); 11492042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 11501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1151ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (CS) { 11520cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation BL = 11530cd59482abd8aec9ed1eaad11f5fe9c1e42639f6Anna Zaks PathDiagnosticLocation::createEndBrace(CS, SM); 115407c015cbcee31f72e2d320ba2c713c046bed42faTed Kremenek EB.addEdge(BL); 1155dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 11568bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek } 11571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1158ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek if (Term) 1159ddb7babf448822e0f8da07fdf9446cf515d04ad5Ted Kremenek EB.addContext(Term); 11601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1161dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek break; 11628bd4d037d837e7922c3661d6158229da58a03887Ted Kremenek } 116314856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 11641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const BlockEntrance *BE = dyn_cast<BlockEntrance>(&P)) { 11653c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek if (const CFGStmt *S = BE->getFirstElement().getAs<CFGStmt>()) { 11663c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const Stmt *stmt = S->getStmt(); 11673c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek if (IsControlFlowExpr(stmt)) { 1168b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // Add the proper context for '&&', '||', and '?'. 11693c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek EB.addContext(stmt); 1170b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 1171b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu else 11723c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek EB.addExtendedContext(PDB.getEnclosingStmtLocation(stmt).asStmt()); 1173dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 1174b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1175dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek break; 1176dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } 11775de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 11785de4fdb8de700f95b0b863a9e5a4a508de17a034Ted Kremenek 1179dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek } while (0); 11801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1181dd986cc9989f665370cef0917ba8ba3b4871e3e6Ted Kremenek if (!NextNode) 118214856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek continue; 11831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11848e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Add pieces from custom visitors. 11858e6431adab313e283a992698f6fc7afe62420999Anna Zaks BugReport *R = PDB.getBugReport(); 11868e6431adab313e283a992698f6fc7afe62420999Anna Zaks for (BugReport::visitor_iterator I = R->visitor_begin(), 11878e6431adab313e283a992698f6fc7afe62420999Anna Zaks E = R->visitor_end(); I!=E; ++I) { 11888e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (PathDiagnosticPiece *p = (*I)->VisitNode(N, NextNode, PDB, *R)) { 11898966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek const PathDiagnosticLocation &Loc = p->getLocation(); 11908966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek EB.addEdge(Loc, true); 11912042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_front(p); 1192368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks updateStackPiecesWithMessage(p, CallStack); 1193368a0d565f078666ca5bfb7fe08d04648688e4bcAnna Zaks 11948966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek if (const Stmt *S = Loc.asStmt()) 11951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump EB.addExtendedContext(PDB.getEnclosingStmtLocation(S).asStmt()); 11968966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek } 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 119814856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek } 119914856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek} 120014856d7b7a2be05ae9a0fd5b2073631994c2ba43Ted Kremenek 12015fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek//===----------------------------------------------------------------------===// 12023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugType and subclasses. 12033106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 1204404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios KyrtzidisBugType::~BugType() { } 1205404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 12063106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid BugType::FlushReports(BugReporter &BR) {} 12073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 120899ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid BuiltinBug::anchor() {} 120999ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 12103106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 12113106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugReport and subclasses. 12123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 1213e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 121499ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikievoid BugReport::NodeResolver::anchor() {} 121599ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie 12168e6431adab313e283a992698f6fc7afe62420999Anna Zaksvoid BugReport::addVisitor(BugReporterVisitor* visitor) { 12178e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (!visitor) 12188e6431adab313e283a992698f6fc7afe62420999Anna Zaks return; 12198e6431adab313e283a992698f6fc7afe62420999Anna Zaks 12208e6431adab313e283a992698f6fc7afe62420999Anna Zaks llvm::FoldingSetNodeID ID; 12218e6431adab313e283a992698f6fc7afe62420999Anna Zaks visitor->Profile(ID); 12228e6431adab313e283a992698f6fc7afe62420999Anna Zaks void *InsertPos; 12238e6431adab313e283a992698f6fc7afe62420999Anna Zaks 12248e6431adab313e283a992698f6fc7afe62420999Anna Zaks if (CallbacksSet.FindNodeOrInsertPos(ID, InsertPos)) { 12258e6431adab313e283a992698f6fc7afe62420999Anna Zaks delete visitor; 12268e6431adab313e283a992698f6fc7afe62420999Anna Zaks return; 12278e6431adab313e283a992698f6fc7afe62420999Anna Zaks } 12288e6431adab313e283a992698f6fc7afe62420999Anna Zaks 12298e6431adab313e283a992698f6fc7afe62420999Anna Zaks CallbacksSet.InsertNode(visitor, InsertPos); 12308e6431adab313e283a992698f6fc7afe62420999Anna Zaks Callbacks = F.add(visitor, Callbacks); 12318e6431adab313e283a992698f6fc7afe62420999Anna Zaks} 12328e6431adab313e283a992698f6fc7afe62420999Anna Zaks 12338e6431adab313e283a992698f6fc7afe62420999Anna ZaksBugReport::~BugReport() { 12348e6431adab313e283a992698f6fc7afe62420999Anna Zaks for (visitor_iterator I = visitor_begin(), E = visitor_end(); I != E; ++I) { 1235dc757b049796949e4b11646445a6598f0bdabd7aAnna Zaks delete *I; 12368e6431adab313e283a992698f6fc7afe62420999Anna Zaks } 12378e6431adab313e283a992698f6fc7afe62420999Anna Zaks} 1238e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 1239e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaksvoid BugReport::Profile(llvm::FoldingSetNodeID& hash) const { 1240e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddPointer(&BT); 1241e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddString(Description); 1242ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks if (UniqueingLocation.isValid()) { 1243ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks UniqueingLocation.Profile(hash); 1244ca8e36eb637e232475ef31c3f22d5da907390917Anna Zaks } else if (Location.isValid()) { 1245590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks Location.Profile(hash); 1246590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks } else { 1247590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks assert(ErrorNode); 1248590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks hash.AddPointer(GetCurrentOrPreviousStmt(ErrorNode)); 1249590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks } 1250e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 1251e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks for (SmallVectorImpl<SourceRange>::const_iterator I = 1252e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks Ranges.begin(), E = Ranges.end(); I != E; ++I) { 1253e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks const SourceRange range = *I; 1254e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (!range.isValid()) 1255e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks continue; 1256e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddInteger(range.getBegin().getRawEncoding()); 1257e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks hash.AddInteger(range.getEnd().getRawEncoding()); 1258e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks } 1259e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks} 12603106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 126176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(SymbolRef sym) { 126276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!sym) 126376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return; 126476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek interestingSymbols.insert(sym); 12658ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose 12668ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose if (const SymbolMetadata *meta = dyn_cast<SymbolMetadata>(sym)) 12678ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose interestingRegions.insert(meta->getRegion()); 126876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 126976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 127076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(const MemRegion *R) { 127176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!R) 127276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return; 127376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek R = R->getBaseRegion(); 127476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek interestingRegions.insert(R); 12758ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose 127676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) 127776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek interestingSymbols.insert(SR->getSymbol()); 127876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 127976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 128076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekvoid BugReport::markInteresting(SVal V) { 128176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek markInteresting(V.getAsRegion()); 128276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek markInteresting(V.getAsSymbol()); 128376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 128476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 128576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(SVal V) const { 128676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return isInteresting(V.getAsRegion()) || isInteresting(V.getAsSymbol()); 128776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 128876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 128976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(SymbolRef sym) const { 129076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!sym) 129176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 12928ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose // We don't currently consider metadata symbols to be interesting 12938ec588e2ac57311604cf80608c7d4b3fb3b022f7Jordy Rose // even if we know their region is interesting. Is that correct behavior? 129476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return interestingSymbols.count(sym); 129576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 129676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 129776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenekbool BugReport::isInteresting(const MemRegion *R) const { 129876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (!R) 129976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 130076aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek R = R->getBaseRegion(); 130176aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek bool b = interestingRegions.count(R); 130276aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (b) 130376aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return true; 130476aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) 130576aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return interestingSymbols.count(SR->getSymbol()); 130676aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek return false; 130776aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek} 130876aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 130976aadc346c3a4c363238a1e1232f324c3355d9e0Ted Kremenek 13109c378f705405d37f49795d5e915989de774fe11fTed Kremenekconst Stmt *BugReport::getStmt() const { 1311e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (!ErrorNode) 1312e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return 0; 1313e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 1314212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care ProgramPoint ProgP = ErrorNode->getLocation(); 13155f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek const Stmt *S = NULL; 13161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13179c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (BlockEntrance *BE = dyn_cast<BlockEntrance>(&ProgP)) { 1318fafd3834754d2093e0ad7a1c005860fd527ecb7fZhongxing Xu CFGBlock &Exit = ProgP.getLocationContext()->getCFG()->getExit(); 131950d5bc4e3b53eb8bb4ebf198f1213348a3fa0f38Zhongxing Xu if (BE->getBlock() == &Exit) 1320212f6d3b5fb3fa55ba1e40671cfc336430abc8ddTom Care S = GetPreviousStmt(ErrorNode); 13213106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 13225f85e17df3f5b0a8021443f2b590daecfb2cbd17Ted Kremenek if (!S) 13231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump S = GetStmt(ProgP); 13241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return S; 13263106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 13273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1328640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidisstd::pair<BugReport::ranges_iterator, BugReport::ranges_iterator> 1329e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna ZaksBugReport::getRanges() { 1330e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks // If no custom ranges, add the range of the statement corresponding to 1331e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks // the error node. 1332e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (Ranges.empty()) { 1333e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks if (const Expr *E = dyn_cast_or_null<Expr>(getStmt())) 1334e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks addRange(E->getSourceRange()); 1335e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks else 1336e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return std::make_pair(ranges_iterator(), ranges_iterator()); 1337e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks } 1338e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks 133914924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks // User-specified absence of range info. 134014924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks if (Ranges.size() == 1 && !Ranges.begin()->isValid()) 134114924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks return std::make_pair(ranges_iterator(), ranges_iterator()); 134214924267950e75c6c1f6fcea39fa507b7168bc39Anna Zaks 1343e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks return std::make_pair(Ranges.begin(), Ranges.end()); 13443106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 13453106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1346590dd8e0959d8df5621827768987c4792b74fc06Anna ZaksPathDiagnosticLocation BugReport::getLocation(const SourceManager &SM) const { 1347b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks if (ErrorNode) { 1348590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks assert(!Location.isValid() && 1349b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks "Either Location or ErrorNode should be specified but not both."); 1350b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks 13519c378f705405d37f49795d5e915989de774fe11fTed Kremenek if (const Stmt *S = GetCurrentOrPreviousStmt(ErrorNode)) { 1352590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks const LocationContext *LC = ErrorNode->getLocationContext(); 1353590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks 13543106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // For member expressions, return the location of the '.' or '->'. 13555b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (const MemberExpr *ME = dyn_cast<MemberExpr>(S)) 1356590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createMemberLoc(ME, SM); 13575b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // For binary operators, return the location of the operator. 13585b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek if (const BinaryOperator *B = dyn_cast<BinaryOperator>(S)) 1359590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createOperatorLoc(B, SM); 13603106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1361590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation::createBegin(S, SM, LC); 13623106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1363b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks } else { 1364b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks assert(Location.isValid()); 1365b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks return Location; 1366b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks } 1367b7530a4ca9a7ef62350682bbb374a06de6fdaa9fAnna Zaks 1368590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks return PathDiagnosticLocation(); 13693106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 13703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 13713106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 13723106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// Methods for BugReporter and subclasses. 13733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 13743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 13753106198188ac6eb2753f1764d5c28376b0b76351Ted KremenekBugReportEquivClass::~BugReportEquivClass() { 13768966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek for (iterator I=begin(), E=end(); I!=E; ++I) delete *I; 13773106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 13783106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1379a2f4ec0df645fc249d2945beef9653f03b175417Zhongxing XuGRBugReporter::~GRBugReporter() { } 13803106198188ac6eb2753f1764d5c28376b0b76351Ted KremenekBugReporterData::~BugReporterData() {} 13813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 138238b02b912e1a55c912f603c4369431264d36a381Zhongxing XuExplodedGraph &GRBugReporter::getGraph() { return Eng.getGraph(); } 13833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 138418c66fdc3c4008d335885695fe36fb5353c5f672Ted KremenekProgramStateManager& 13853106198188ac6eb2753f1764d5c28376b0b76351Ted KremenekGRBugReporter::getStateManager() { return Eng.getStateManager(); } 13863106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 13873b030a28cda2b953758507769c1d436bec5ec45eAnna ZaksBugReporter::~BugReporter() { 13883b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks FlushReports(); 13893b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks 13903b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks // Free the bug reports we are tracking. 13913b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks typedef std::vector<BugReportEquivClass *> ContTy; 13923b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks for (ContTy::iterator I = EQClassesVector.begin(), E = EQClassesVector.end(); 13933b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks I != E; ++I) { 13943b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks delete *I; 13953b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks } 13963b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks} 13973106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 13983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid BugReporter::FlushReports() { 13993106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (BugTypes.isEmpty()) 14003106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek return; 14013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 14023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // First flush the warnings for each BugType. This may end up creating new 1403404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // warnings and new BugTypes. 1404404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // FIXME: Only NSErrorChecker needs BugType's FlushReports. 1405404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // Turn NSErrorChecker into a proper checker and remove this. 14065f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<const BugType*, 16> bugTypes; 14073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek for (BugTypesTy::iterator I=BugTypes.begin(), E=BugTypes.end(); I!=E; ++I) 1408404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis bugTypes.push_back(*I); 14095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVector<const BugType*, 16>::iterator 1410404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis I = bugTypes.begin(), E = bugTypes.end(); I != E; ++I) 14113106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek const_cast<BugType*>(*I)->FlushReports(*this); 14123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1413404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis typedef llvm::FoldingSet<BugReportEquivClass> SetTy; 1414404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (SetTy::iterator EI=EQClasses.begin(), EE=EQClasses.end(); EI!=EE;++EI){ 1415404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass& EQ = *EI; 1416404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis FlushReport(EQ); 14173106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 14183106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 1419404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // BugReporter owns and deletes only BugTypes created implicitly through 1420404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // EmitBasicReport. 1421404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // FIXME: There are leaks from checkers that assume that the BugTypes they 1422404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // create will be destroyed by the BugReporter. 1423404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis for (llvm::StringMap<BugType*>::iterator 1424404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis I = StrBugTypes.begin(), E = StrBugTypes.end(); I != E; ++I) 1425404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis delete I->second; 1426404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 14273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Remove all references to the BugType objects. 14283baf672378f105602d2b12f03f00277ae1936fe9Ted Kremenek BugTypes = F.getEmptySet(); 14293106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 14303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 14313106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 14323106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek// PathDiagnostics generation. 14333106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek//===----------------------------------------------------------------------===// 14343106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 143538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xustatic std::pair<std::pair<ExplodedGraph*, NodeBackMap*>, 1436c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::pair<ExplodedNode*, unsigned> > 143738b02b912e1a55c912f603c4369431264d36a381Zhongxing XuMakeReportGraph(const ExplodedGraph* G, 14385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<const ExplodedNode*> &nodes) { 14391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14403106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create the trimmed graph. It will contain the shortest paths from the 14411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // error nodes to the root. In the new graph we should only have one 14423106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // error node unless there are two or more error nodes with the same minimum 14433106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // path length. 144438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu ExplodedGraph* GTrim; 1445c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu InterExplodedGraphMap* NMap; 14463106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 14473106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*, const void*> InverseMap; 144840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek llvm::tie(GTrim, NMap) = G->Trim(nodes.data(), nodes.data() + nodes.size(), 144940406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek &InverseMap); 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14513106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create owning pointers for GTrim and NMap just to ensure that they are 14523106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // released when this function exists. 14536f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ExplodedGraph> AutoReleaseGTrim(GTrim); 14546f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<InterExplodedGraphMap> AutoReleaseNMap(NMap); 14551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14563106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the (first) error node in the trimmed graph. We just need to consult 14573106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // the node map (NMap) which maps from nodes in the original graph to nodes 14583106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // in the new graph. 1459938332c657390d1e782e0adc03b092993edae962Ted Kremenek 1460c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::queue<const ExplodedNode*> WS; 146138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::DenseMap<const ExplodedNode*, unsigned> IndexMapTy; 1462938332c657390d1e782e0adc03b092993edae962Ted Kremenek IndexMapTy IndexMap; 14633106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 146440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek for (unsigned nodeIndex = 0 ; nodeIndex < nodes.size(); ++nodeIndex) { 146540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek const ExplodedNode *originalNode = nodes[nodeIndex]; 146640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (const ExplodedNode *N = NMap->getMappedNode(originalNode)) { 1467938332c657390d1e782e0adc03b092993edae962Ted Kremenek WS.push(N); 146840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek IndexMap[originalNode] = nodeIndex; 14693106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 147040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek } 14711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1472938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(!WS.empty() && "No error node found in the trimmed graph."); 14733106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 14743106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create a new (third!) graph with a single path. This is the graph 14753106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // that will be returned to the caller. 1476c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu ExplodedGraph *GNew = new ExplodedGraph(); 14771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14783106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Sometimes the trimmed graph can contain a cycle. Perform a reverse BFS 14793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // to the root node, and then construct a new graph that contains only 14803106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // a single path. 14813106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*,unsigned> Visited; 14821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14833106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek unsigned cnt = 0; 14849c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *Root = 0; 14851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14863106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (!WS.empty()) { 14879c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *Node = WS.front(); 14883106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek WS.pop(); 14891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14903106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Visited.find(Node) != Visited.end()) 14913106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 14921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14933106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Visited[Node] = cnt++; 14941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14953106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Node->pred_empty()) { 14963106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Root = Node; 14973106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 14983106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 14991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1500c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu for (ExplodedNode::const_pred_iterator I=Node->pred_begin(), 15013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek E=Node->pred_end(); I!=E; ++I) 15023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek WS.push(*I); 15033106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1505938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(Root); 15061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Now walk from the root down the BFS path, always taking the successor 15083106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // with the lowest number. 15091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExplodedNode *Last = 0, *First = 0; 15103106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek NodeBackMap *BM = new NodeBackMap(); 1511938332c657390d1e782e0adc03b092993edae962Ted Kremenek unsigned NodeIndex = 0; 15121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1513c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu for ( const ExplodedNode *N = Root ;;) { 15143106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Lookup the number associated with the current node. 15153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*,unsigned>::iterator I = Visited.find(N); 1516938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(I != Visited.end()); 15171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15183106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create the equivalent node in the new graph with the same state 15193106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // and location. 15209c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *NewN = GNew->getNode(N->getLocation(), N->getState()); 15211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Store the mapping to the original node. 15233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek llvm::DenseMap<const void*, const void*>::iterator IMitr=InverseMap.find(N); 15243106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(IMitr != InverseMap.end() && "No mapping to original node."); 1525c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu (*BM)[NewN] = (const ExplodedNode*) IMitr->second; 15261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Link up the new node with the previous node. 15283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Last) 15295fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek NewN->addPredecessor(Last, *GNew); 15301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15313106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Last = NewN; 15321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15333106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Are we at the final node? 1534938332c657390d1e782e0adc03b092993edae962Ted Kremenek IndexMapTy::iterator IMI = 1535c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu IndexMap.find((const ExplodedNode*)(IMitr->second)); 1536938332c657390d1e782e0adc03b092993edae962Ted Kremenek if (IMI != IndexMap.end()) { 15373106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek First = NewN; 1538938332c657390d1e782e0adc03b092993edae962Ted Kremenek NodeIndex = IMI->second; 15393106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 15403106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15423106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the next successor node. We choose the node that is marked 15433106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // with the lowest DFS number. 1544c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode::const_succ_iterator SI = N->succ_begin(); 1545c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode::const_succ_iterator SE = N->succ_end(); 15463106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek N = 0; 15471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15483106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek for (unsigned MinVal = 0; SI != SE; ++SI) { 15491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15503106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek I = Visited.find(*SI); 15511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15523106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (I == Visited.end()) 15533106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 15541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15553106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!N || I->second < MinVal) { 15563106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek N = *SI; 15573106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MinVal = I->second; 15583106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15593106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1561938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(N); 15623106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 15631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1564938332c657390d1e782e0adc03b092993edae962Ted Kremenek assert(First); 1565938332c657390d1e782e0adc03b092993edae962Ted Kremenek 15663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek return std::make_pair(std::make_pair(GNew, BM), 15673106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek std::make_pair(First, NodeIndex)); 15683106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 1569d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 15703106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek/// CompactPathDiagnostic - This function postprocesses a PathDiagnostic object 15713106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek/// and collapses PathDiagosticPieces that are expanded by macros. 157277d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenekstatic void CompactPathDiagnostic(PathPieces &path, const SourceManager& SM) { 15732042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek typedef std::vector<std::pair<IntrusiveRefCntPtr<PathDiagnosticMacroPiece>, 15742042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek SourceLocation> > MacroStackTy; 15751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1576c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmith typedef std::vector<IntrusiveRefCntPtr<PathDiagnosticPiece> > 15773106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PiecesTy; 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15793106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStackTy MacroStack; 15803106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek PiecesTy Pieces; 15811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 158277d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek for (PathPieces::const_iterator I = path.begin(), E = path.end(); 15832042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek I!=E; ++I) { 158477d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 158577d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek PathDiagnosticPiece *piece = I->getPtr(); 158677d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 158777d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek // Recursively compact calls. 158877d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek if (PathDiagnosticCallPiece *call=dyn_cast<PathDiagnosticCallPiece>(piece)){ 158977d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek CompactPathDiagnostic(call->path, SM); 159077d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek } 159177d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek 15923106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Get the location of the PathDiagnosticPiece. 159377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek const FullSourceLoc Loc = piece->getLocation().asLocation(); 15941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15953106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Determine the instantiation location, which is the location we group 15963106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // related PathDiagnosticPieces. 15971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation InstantiationLoc = Loc.isMacroID() ? 1598402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SM.getExpansionLoc(Loc) : 15993106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation(); 16001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16013106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (Loc.isFileID()) { 16023106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.clear(); 160377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek Pieces.push_back(piece); 16043106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 16053106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1606706e3cf2fa7523b5497c52c11a2b6dad2a1ce2acTed Kremenek 16073106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(Loc.isMacroID()); 16081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16093106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Is the PathDiagnosticPiece within the same macro group? 16103106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!MacroStack.empty() && InstantiationLoc == MacroStack.back().second) { 161177d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek MacroStack.back().first->subPieces.push_back(piece); 16123106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek continue; 16133106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1614d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 16153106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // We aren't in the same group. Are we descending into a new macro 16163106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // or are part of an old one? 1617c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmith IntrusiveRefCntPtr<PathDiagnosticMacroPiece> MacroGroup; 1618d8c938b0f6b7a7156181be575239e4c6e15a2adbTed Kremenek 16193106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation ParentInstantiationLoc = InstantiationLoc.isMacroID() ? 1620402785357ab053dd53f4fdd858b9630a5e0f8badChandler Carruth SM.getExpansionLoc(Loc) : 16213106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek SourceLocation(); 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Walk the entire macro stack. 16243106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek while (!MacroStack.empty()) { 16253106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (InstantiationLoc == MacroStack.back().second) { 16263106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = MacroStack.back().first; 16273106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 16283106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (ParentInstantiationLoc == MacroStack.back().second) { 16313106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = MacroStack.back().first; 16323106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 163361f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek } 16341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16353106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.pop_back(); 16366837faa083bebad39aa342f84c2b450fb6410eafTed Kremenek } 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16383106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (!MacroGroup || ParentInstantiationLoc == MacroStack.back().second) { 16393106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Create a new macro group and add it to the stack. 1640590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticMacroPiece *NewGroup = 1641590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks new PathDiagnosticMacroPiece( 164277d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek PathDiagnosticLocation::createSingleLocation(piece->getLocation())); 16435a429954aedd8a830a70fcea2cb51561673e4fc3Ted Kremenek 16443106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek if (MacroGroup) 1645802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek MacroGroup->subPieces.push_back(NewGroup); 16463106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek else { 16473106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(InstantiationLoc.isFileID()); 16483106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek Pieces.push_back(NewGroup); 16493106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16513106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroGroup = NewGroup; 16523106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek MacroStack.push_back(std::make_pair(MacroGroup, InstantiationLoc)); 16537dc8664a54f4ede40a5f4adee3f5081a59d7ee1cTed Kremenek } 16543106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek 16553106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Finally, add the PathDiagnosticPiece to the group. 165677d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek MacroGroup->subPieces.push_back(piece); 16573106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 16581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16593106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Now take the pieces and construct a new PathDiagnostic. 166077d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek path.clear(); 16611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166277d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek for (PiecesTy::iterator I=Pieces.begin(), E=Pieces.end(); I!=E; ++I) 166377d09441e59d3bced6c3d55505eb3a67a784fe02Ted Kremenek path.push_back(*I); 166461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 166561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 16663106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenekvoid GRBugReporter::GeneratePathDiagnostic(PathDiagnostic& PD, 16675f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<BugReport *> &bugReports) { 16681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166940406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek assert(!bugReports.empty()); 16705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<const ExplodedNode *, 10> errorNodes; 16715f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<BugReport*>::iterator I = bugReports.begin(), 167240406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek E = bugReports.end(); I != E; ++I) { 167340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek errorNodes.push_back((*I)->getErrorNode()); 167440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek } 16751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16763106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Construct a new graph that contains only a single path from the error 16771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // node to a root. 167838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const std::pair<std::pair<ExplodedGraph*, NodeBackMap*>, 1679c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::pair<ExplodedNode*, unsigned> >& 168040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek GPair = MakeReportGraph(&getGraph(), errorNodes); 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16823106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek // Find the BugReport with the original location. 168340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek assert(GPair.second.second < bugReports.size()); 168440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *R = bugReports[GPair.second.second]; 16853106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek assert(R && "No original report found for sliced graph."); 16861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16876f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<ExplodedGraph> ReportGraph(GPair.first.first); 16886f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<NodeBackMap> BackMap(GPair.first.second); 1689c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu const ExplodedNode *N = GPair.second.first; 16901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Start building the path diagnostic... 1692ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticBuilder PDB(*this, R, BackMap.get(), 1693ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie getPathDiagnosticConsumer()); 16941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16958e6431adab313e283a992698f6fc7afe62420999Anna Zaks // Register additional node visitors. 169650bbc165b063155cc23c360deb7b865502e068e2Anna Zaks R->addVisitor(new NilReceiverBRVisitor()); 169750bbc165b063155cc23c360deb7b865502e068e2Anna Zaks R->addVisitor(new ConditionBRVisitor()); 16981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 169923f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks // Generate the very last diagnostic piece - the piece is visible before 170023f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks // the trace is expanded. 170123f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks PathDiagnosticPiece *LastPiece = 0; 170223f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks for (BugReport::visitor_iterator I = R->visitor_begin(), 170323f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks E = R->visitor_end(); I!=E; ++I) { 170423f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks if (PathDiagnosticPiece *Piece = (*I)->getEndPath(PDB, N, *R)) { 170523f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks assert (!LastPiece && 170623f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks "There can only be one final piece in a diagnostic."); 170723f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks LastPiece = Piece; 170823f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks } 170923f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks } 171023f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks if (!LastPiece) 171123f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks LastPiece = BugReporterVisitor::getDefaultEndPath(PDB, N, *R); 171223f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks if (LastPiece) 17132042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek PD.getActivePath().push_back(LastPiece); 171423f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks else 171523f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks return; 171623f395ee1bf4e4aa76b310d896a951799eaca94aAnna Zaks 17173106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek switch (PDB.getGenerationScheme()) { 1718ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie case PathDiagnosticConsumer::Extensive: 17198966bc1c8ce271c09936c0eaf6c841aef4a0af1bTed Kremenek GenerateExtensivePathDiagnostic(PD, PDB, N); 17205fb5dfb6646464db3cd6d54a6332375c8fe36b75Ted Kremenek break; 1721ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie case PathDiagnosticConsumer::Minimal: 17223106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek GenerateMinimalPathDiagnostic(PD, PDB, N); 17233106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek break; 17243106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek } 1725c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek 1726c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek // Finally, prune the diagnostic path of uninteresting stuff. 1727c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek bool hasSomethingInteresting = RemoveUneededCalls(PD.getMutablePieces()); 1728c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek assert(hasSomethingInteresting); 1729c89f4b05721f53cfbaf32fc0c4919a4616e68440Ted Kremenek (void) hasSomethingInteresting; 17303106198188ac6eb2753f1764d5c28376b0b76351Ted Kremenek} 17311aa44c7c9198796085b77c6bdd7c90030845a688Ted Kremenek 1732cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenekvoid BugReporter::Register(BugType *BT) { 17333baf672378f105602d2b12f03f00277ae1936fe9Ted Kremenek BugTypes = F.add(BugTypes, BT); 173476d90c8bf83d071fd1bdbffa6d9f2af87c6bb7b5Ted Kremenek} 173576d90c8bf83d071fd1bdbffa6d9f2af87c6bb7b5Ted Kremenek 17361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpvoid BugReporter::EmitReport(BugReport* R) { 1737cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek // Compute the bug report's hash to determine its equivalence class. 1738cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek llvm::FoldingSetNodeID ID; 1739cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek R->Profile(ID); 17401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Lookup the equivance class. If there isn't one, create it. 1742cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek BugType& BT = R->getBugType(); 1743cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek Register(&BT); 1744cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek void *InsertPos; 1745404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugReportEquivClass* EQ = EQClasses.FindNodeOrInsertPos(ID, InsertPos); 17461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1747cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek if (!EQ) { 1748cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EQ = new BugReportEquivClass(R); 1749404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis EQClasses.InsertNode(EQ, InsertPos); 17503b030a28cda2b953758507769c1d436bec5ec45eAnna Zaks EQClassesVector.push_back(EQ); 1751cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek } 1752cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek else 1753cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EQ->AddReport(R); 175461f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 175561f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek 175606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 175706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek//===----------------------------------------------------------------------===// 175806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek// Emitting reports in equivalence classes. 175906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek//===----------------------------------------------------------------------===// 176006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 176106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremeneknamespace { 1762ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamstruct FRIEC_WLItem { 176306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek const ExplodedNode *N; 176406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek ExplodedNode::const_succ_iterator I, E; 176506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 176606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek FRIEC_WLItem(const ExplodedNode *n) 176706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek : N(n), I(N->succ_begin()), E(N->succ_end()) {} 176806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek}; 176906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek} 177006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 177161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenekstatic BugReport * 177261f52bd3c524268e25b48a1ed3730aedd6cc8374Ted KremenekFindReportInEquivalenceClass(BugReportEquivClass& EQ, 17735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<BugReport*> &bugReports) { 177461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 177506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek BugReportEquivClass::iterator I = EQ.begin(), E = EQ.end(); 177606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek assert(I != E); 177706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek BugReport *R = *I; 177806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek BugType& BT = R->getBugType(); 177961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 178040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // If we don't need to suppress any of the nodes because they are 178140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // post-dominated by a sink, simply add all the nodes in the equivalence class 178240406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek // to 'Nodes'. Any of the reports will serve as a "representative" report. 178361f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!BT.isSuppressOnSink()) { 178461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek for (BugReportEquivClass::iterator I=EQ.begin(), E=EQ.end(); I!=E; ++I) { 17859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *N = I->getErrorNode(); 178661f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (N) { 178761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek R = *I; 178840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek bugReports.push_back(R); 178961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 179061f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 179106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek return R; 179261f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 179361f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 179406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // For bug reports that should be suppressed when all paths are post-dominated 179506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // by a sink node, iterate through the reports in the equivalence class 179606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // until we find one that isn't post-dominated (if one exists). We use a 179706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // DFS traversal of the ExplodedGraph to find a non-sink node. We could write 179806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // this as a recursive function, but we don't want to risk blowing out the 179906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // stack for very long paths. 180040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *exampleReport = 0; 180161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 180206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek for (; I != E; ++I) { 180306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek R = *I; 180440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek const ExplodedNode *errorNode = R->getErrorNode(); 180506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 180640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!errorNode) 180706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek continue; 180840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (errorNode->isSink()) { 1809b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable( 181006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek "BugType::isSuppressSink() should not be 'true' for sink end nodes"); 181106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 181261f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // No successors? By definition this nodes isn't post-dominated by a sink. 181340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (errorNode->succ_empty()) { 181440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek bugReports.push_back(R); 181540406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 181640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek exampleReport = R; 181761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek continue; 181861f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 181961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 182006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // At this point we know that 'N' is not a sink and it has at least one 182106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // successor. Use a DFS worklist to find a non-sink end-of-path node. 182206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek typedef FRIEC_WLItem WLItem; 18235f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef SmallVector<WLItem, 10> DFSWorkList; 182406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek llvm::DenseMap<const ExplodedNode *, unsigned> Visited; 182506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 182606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek DFSWorkList WL; 182740406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek WL.push_back(errorNode); 182840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek Visited[errorNode] = 1; 182906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 183006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek while (!WL.empty()) { 183106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WLItem &WI = WL.back(); 183206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek assert(!WI.N->succ_empty()); 183306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 183406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek for (; WI.I != WI.E; ++WI.I) { 183506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek const ExplodedNode *Succ = *WI.I; 183606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // End-of-path node? 183706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek if (Succ->succ_empty()) { 183861f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // If we found an end-of-path node that is not a sink. 183961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!Succ->isSink()) { 184040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek bugReports.push_back(R); 184140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 184240406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek exampleReport = R; 184361f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek WL.clear(); 184461f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek break; 184561f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek } 184606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // Found a sink? Continue on to the next successor. 184706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek continue; 184806c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 184906c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // Mark the successor as visited. If it hasn't been explored, 185006c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek // enqueue it to the DFS worklist. 185106c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek unsigned &mark = Visited[Succ]; 185206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek if (!mark) { 185306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek mark = 1; 185406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WL.push_back(Succ); 185506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek break; 185606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 185706c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 185861f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek 185961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // The worklist may have been cleared at this point. First 186061f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // check if it is empty before checking the last item. 186161f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek if (!WL.empty() && &WL.back() == &WI) 186206c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek WL.pop_back(); 186306c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 186406c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek } 186506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 186661f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // ExampleReport will be NULL if all the nodes in the equivalence class 186761f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek // were post-dominated by sinks. 186840406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek return exampleReport; 186961f52bd3c524268e25b48a1ed3730aedd6cc8374Ted Kremenek} 1870e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1871e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek//===----------------------------------------------------------------------===// 1872e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek// DiagnosticCache. This is a hack to cache analyzer diagnostics. It 1873e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek// uses global state, which eventually should go elsewhere. 1874e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek//===----------------------------------------------------------------------===// 1875e0a58073b76fc016325a35152533b8468df2bf4aTed Kremeneknamespace { 1876ba5fb5a955c896815c439289fc51c03cf0635129Kovarththanan Rajaratnamclass DiagCacheItem : public llvm::FoldingSetNode { 1877e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek llvm::FoldingSetNodeID ID; 1878e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenekpublic: 1879e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DiagCacheItem(BugReport *R, PathDiagnostic *PD) { 18804522e2a9e7fa0313e8e5a388d8f0ab66feccc6afAnna Zaks R->Profile(ID); 18814522e2a9e7fa0313e8e5a388d8f0ab66feccc6afAnna Zaks PD->Profile(ID); 1882e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 1883e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1884e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek void Profile(llvm::FoldingSetNodeID &id) { 1885e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek id = ID; 1886e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 1887e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1888e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek llvm::FoldingSetNodeID &getID() { return ID; } 1889e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek}; 1890e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek} 1891e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1892e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenekstatic bool IsCachedDiagnostic(BugReport *R, PathDiagnostic *PD) { 1893e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // FIXME: Eventually this diagnostic cache should reside in something 1894e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // like AnalysisManager instead of being a static variable. This is 1895e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek // really unsafe in the long term. 1896e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek typedef llvm::FoldingSet<DiagCacheItem> DiagnosticCache; 1897e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek static DiagnosticCache DC; 1898e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1899e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek void *InsertPos; 1900e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DiagCacheItem *Item = new DiagCacheItem(R, PD); 1901e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1902e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek if (DC.FindNodeOrInsertPos(Item->getID(), InsertPos)) { 1903e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek delete Item; 1904e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek return true; 1905e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek } 1906e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1907e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek DC.InsertNode(Item, InsertPos); 1908e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek return false; 1909e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek} 1910e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1911cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenekvoid BugReporter::FlushReport(BugReportEquivClass& EQ) { 19125f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<BugReport*, 10> bugReports; 191340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugReport *exampleReport = FindReportInEquivalenceClass(EQ, bugReports); 191440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!exampleReport) 191506c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek return; 191606c9cb4d1a29e708f51bce9f7ee5acbe1c3761c3Ted Kremenek 1917ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie PathDiagnosticConsumer* PD = getPathDiagnosticConsumer(); 19181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1919cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek // FIXME: Make sure we use the 'R' for the path that was actually used. 19201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Probably doesn't make a difference in practice. 192140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek BugType& BT = exampleReport->getBugType(); 19221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19236f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PathDiagnostic> 192440406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek D(new PathDiagnostic(exampleReport->getBugType().getName(), 1925da0e8429a3598acfdd0ecf15135d432e4dd3517cTed Kremenek !PD || PD->useVerboseDescription() 192640406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek ? exampleReport->getDescription() 192740406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek : exampleReport->getShortDescription(), 1928d49967f8764135ae65658e354b6d38e3637c9de3Ted Kremenek BT.getCategory())); 1929d49967f8764135ae65658e354b6d38e3637c9de3Ted Kremenek 193040406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (!bugReports.empty()) 193140406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek GeneratePathDiagnostic(*D.get(), bugReports); 19321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 193340406fe63df2b932d6e9fd021f77f097f9d33afbTed Kremenek if (IsCachedDiagnostic(exampleReport, D.get())) 1934e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek return; 1935e0a58073b76fc016325a35152533b8468df2bf4aTed Kremenek 1936072192bcbb05a0fee7ec3061750b27e8d2004952Ted Kremenek // Get the meta data. 19377f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks const BugReport::ExtraTextList &Meta = 19387f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks exampleReport->getExtraText(); 19397f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks for (BugReport::ExtraTextList::const_iterator i = Meta.begin(), 19407f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks e = Meta.end(); i != e; ++i) { 19417f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks D->addMeta(*i); 19427f2531cb41448852ec78de90fc1d3c0149c95d7dAnna Zaks } 194375840e1501563fe7c3dcb5600b75965ba1fe1bc4Ted Kremenek 19443148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek // Emit a summary diagnostic to the regular Diagnostics engine. 1945640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis BugReport::ranges_iterator Beg, End; 1946640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis llvm::tie(Beg, End) = exampleReport->getRanges(); 1947d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &Diag = getDiagnostic(); 1948c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek 1949c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek // Search the description for '%', as that will be interpretted as a 1950c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek // format character by FormatDiagnostics. 19515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef desc = exampleReport->getShortDescription(); 1952c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek unsigned ErrorDiag; 1953c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek { 1954f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<512> TmpStr; 1955c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek llvm::raw_svector_ostream Out(TmpStr); 19565f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (StringRef::iterator I=desc.begin(), E=desc.end(); I!=E; ++I) 1957c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek if (*I == '%') 1958c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out << "%%"; 1959c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek else 1960c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out << *I; 1961c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek 1962c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek Out.flush(); 1963d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie ErrorDiag = Diag.getCustomDiagID(DiagnosticsEngine::Warning, TmpStr); 1964c213b48206c55ca0eb1387cfa1651de504f147d1Ted Kremenek } 19650a14eee528a901c16f0e288fbc10a3abc1660d87Chris Lattner 1966b6b7e7bff3101062521de6e79533a3c25e2195d9Argyrios Kyrtzidis { 1967590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks DiagnosticBuilder diagBuilder = Diag.Report( 1968590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getLocation(getSourceManager()).asLocation(), ErrorDiag); 1969640ccf071076e684713cc3c3276bb51982bff607Argyrios Kyrtzidis for (BugReport::ranges_iterator I = Beg; I != End; ++I) 1970b6b7e7bff3101062521de6e79533a3c25e2195d9Argyrios Kyrtzidis diagBuilder << *I; 19712f0e89ea96292d2974eb1a7dddc0e9870aa86bb7Ted Kremenek } 19723148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek 1973ef3643fbbbf66247c5e205497fae0f46e240c143David Blaikie // Emit a full diagnostic for the path if we have a PathDiagnosticConsumer. 19743148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek if (!PD) 19753148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek return; 19761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1977802e02463b880f53a6e645bde78cc412481ce9e0Ted Kremenek if (D->path.empty()) { 1978590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticPiece *piece = new PathDiagnosticEventPiece( 1979590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getLocation(getSourceManager()), 1980590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks exampleReport->getDescription()); 19811fbfd5b9b8b82aea084773b76dd1ec6796a7000cTed Kremenek 19823148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek for ( ; Beg != End; ++Beg) piece->addRange(*Beg); 19832042fc1f36d471f437023e8899f0c4fadded2341Ted Kremenek D->getActivePath().push_back(piece); 19843148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek } 19851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19863148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek PD->HandlePathDiagnostic(D.take()); 198761f3e058056ab519d249aa67e3d52b0ead57c63eTed Kremenek} 198857202071e477530e9348bc76671ee369b2399b92Ted Kremenek 19895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid BugReporter::EmitBasicReport(StringRef name, StringRef str, 1990590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks PathDiagnosticLocation Loc, 19918c036c7f77d69f96df49219ed0bdbade200d52ebTed Kremenek SourceRange* RBeg, unsigned NumRanges) { 19928c036c7f77d69f96df49219ed0bdbade200d52ebTed Kremenek EmitBasicReport(name, "", str, Loc, RBeg, NumRanges); 19938c036c7f77d69f96df49219ed0bdbade200d52ebTed Kremenek} 1994cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 19955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid BugReporter::EmitBasicReport(StringRef name, 19965f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef category, 1997590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks StringRef str, PathDiagnosticLocation Loc, 19988c036c7f77d69f96df49219ed0bdbade200d52ebTed Kremenek SourceRange* RBeg, unsigned NumRanges) { 19991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2000404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis // 'BT' is owned by BugReporter. 2001404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugType *BT = getBugTypeForName(name, category); 2002590dd8e0959d8df5621827768987c4792b74fc06Anna Zaks BugReport *R = new BugReport(*BT, str, Loc); 2003cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek for ( ; NumRanges > 0 ; --NumRanges, ++RBeg) R->addRange(*RBeg); 2004cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek EmitReport(R); 2005cabe66811fe43835b8c5a0854552768fc53261e3Ted Kremenek} 2006404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis 20075f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerBugType *BugReporter::getBugTypeForName(StringRef name, 20085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef category) { 2009f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<136> fullDesc; 2010404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis llvm::raw_svector_ostream(fullDesc) << name << ":" << category; 2011404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis llvm::StringMapEntry<BugType *> & 2012404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis entry = StrBugTypes.GetOrCreateValue(fullDesc); 2013404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BugType *BT = entry.getValue(); 2014404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis if (!BT) { 2015404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis BT = new BugType(name, category); 2016404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis entry.setValue(BT); 2017404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis } 2018404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis return BT; 2019404fc3ad6bd844bf8ce70cbf9974ab297704a122Argyrios Kyrtzidis} 2020