StackAddrEscapeChecker.cpp revision 0bd6b110e908892d4b5c8671a9f435a1d72ad16a
1f5d2ef4a61e70eb2bcc3f4872e7095cf19d20163Ted Kremenek//=== StackAddrEscapeChecker.cpp ----------------------------------*- C++ -*--// 21622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// 31622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// The LLVM Compiler Infrastructure 41622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// 51622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// This file is distributed under the University of Illinois Open Source 61622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// License. See LICENSE.TXT for details. 71622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// 81622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu//===----------------------------------------------------------------------===// 91622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// 101622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// This file defines stack address leak checker, which checks if an invalid 111622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// stack address is stored into a global or heap location. See CERT DCL30-C. 121622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu// 131622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu//===----------------------------------------------------------------------===// 141622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu 15027a6abdd6cedc0b8203da72eed6d15c796dce9dArgyrios Kyrtzidis#include "ClangSACheckers.h" 16ec8605f1d7ec846dbf51047bfd5c56d32d1ff91cArgyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/Checker.h" 17695fb502825a53ccd178ec1c85c77929d88acb71Argyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/CheckerManager.h" 18af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h" 2018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" 219b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu#include "clang/Basic/SourceManager.h" 229b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu#include "llvm/ADT/SmallString.h" 231622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xuusing namespace clang; 249ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenekusing namespace ento; 251622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu 261622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xunamespace { 27ec8605f1d7ec846dbf51047bfd5c56d32d1ff91cArgyrios Kyrtzidisclass StackAddrEscapeChecker : public Checker< check::PreStmt<ReturnStmt>, 28af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis check::EndPath > { 29af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis mutable llvm::OwningPtr<BuiltinBug> BT_stackleak; 30af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis mutable llvm::OwningPtr<BuiltinBug> BT_returnstack; 311622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu 321622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xupublic: 33af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis void checkPreStmt(const ReturnStmt *RS, CheckerContext &C) const; 34af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks void checkEndPath(CheckerContext &Ctx) const; 359b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xuprivate: 36af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis void EmitStackError(CheckerContext &C, const MemRegion *R, 37af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis const Expr *RetE) const; 385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner static SourceRange GenName(raw_ostream &os, const MemRegion *R, 39af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis SourceManager &SM); 401622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu}; 411622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu} 421622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu 435f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerSourceRange StackAddrEscapeChecker::GenName(raw_ostream &os, 44a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek const MemRegion *R, 45a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek SourceManager &SM) { 46a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek // Get the base region, stripping away fields and elements. 479b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu R = R->getBaseRegion(); 48a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek SourceRange range; 49a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << "Address of "; 50a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 519b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu // Check if the region is a compound literal. 529b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu if (const CompoundLiteralRegion* CR = dyn_cast<CompoundLiteralRegion>(R)) { 539c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CompoundLiteralExpr *CL = CR->getLiteralExpr(); 54a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << "stack memory associated with a compound literal " 55a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek "declared on line " 56642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << SM.getExpansionLineNumber(CL->getLocStart()) 57a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek << " returned to caller"; 589b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu range = CL->getSourceRange(); 599b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu } 609b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu else if (const AllocaRegion* AR = dyn_cast<AllocaRegion>(R)) { 619c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *ARE = AR->getExpr(); 629b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu SourceLocation L = ARE->getLocStart(); 639b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu range = ARE->getSourceRange(); 64a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << "stack memory allocated by call to alloca() on line " 65642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << SM.getExpansionLineNumber(L); 669b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu } 679b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu else if (const BlockDataRegion *BR = dyn_cast<BlockDataRegion>(R)) { 689b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu const BlockDecl *BD = BR->getCodeRegion()->getDecl(); 699b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu SourceLocation L = BD->getLocStart(); 709b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu range = BD->getSourceRange(); 71a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << "stack-allocated block declared on line " 72642116259e8df6286063a17361c20e95b5017a0aChandler Carruth << SM.getExpansionLineNumber(L); 739b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu } 749b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu else if (const VarRegion *VR = dyn_cast<VarRegion>(R)) { 75a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << "stack memory associated with local variable '" 76a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek << VR->getString() << '\''; 779b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu range = VR->getDecl()->getSourceRange(); 789b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu } 79782f63ecd124f9384f988dc7e0cf4ae1540c15f6Jeffrey Yasskin else if (const CXXTempObjectRegion *TOR = dyn_cast<CXXTempObjectRegion>(R)) { 80782f63ecd124f9384f988dc7e0cf4ae1540c15f6Jeffrey Yasskin os << "stack memory associated with temporary object of type '" 81782f63ecd124f9384f988dc7e0cf4ae1540c15f6Jeffrey Yasskin << TOR->getValueType().getAsString() << '\''; 82782f63ecd124f9384f988dc7e0cf4ae1540c15f6Jeffrey Yasskin range = TOR->getExpr()->getSourceRange(); 83782f63ecd124f9384f988dc7e0cf4ae1540c15f6Jeffrey Yasskin } 849b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu else { 85b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("Invalid region in ReturnStackAddressChecker."); 86a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek } 87a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 88a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek return range; 89a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek} 90a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 91f5d2ef4a61e70eb2bcc3f4872e7095cf19d20163Ted Kremenekvoid StackAddrEscapeChecker::EmitStackError(CheckerContext &C, const MemRegion *R, 92af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis const Expr *RetE) const { 93d048c6ef5b6cfaa0cecb8cc1d4bdace32ed21d07Ted Kremenek ExplodedNode *N = C.generateSink(); 94a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 95a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek if (!N) 969b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu return; 979b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 98a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek if (!BT_returnstack) 99af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis BT_returnstack.reset( 100af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis new BuiltinBug("Return of address to stack-allocated memory")); 101a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 102a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek // Generate a report for this bug. 103a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek llvm::SmallString<512> buf; 104a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek llvm::raw_svector_ostream os(buf); 105a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek SourceRange range = GenName(os, R, C.getSourceManager()); 106a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << " returned to caller"; 107e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks BugReport *report = new BugReport(*BT_returnstack, os.str(), N); 1089b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu report->addRange(RetE->getSourceRange()); 1099b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu if (range.isValid()) 1109b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu report->addRange(range); 1119b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 1129b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu C.EmitReport(report); 113a7e6845660f91ec611427e1db842780e1ec12bdbEli Friedman} 1149b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 115f5d2ef4a61e70eb2bcc3f4872e7095cf19d20163Ted Kremenekvoid StackAddrEscapeChecker::checkPreStmt(const ReturnStmt *RS, 116af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis CheckerContext &C) const { 1179b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 1189b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu const Expr *RetE = RS->getRetValue(); 1199b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu if (!RetE) 1209b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu return; 1219b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 1229b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu SVal V = C.getState()->getSVal(RetE); 1239b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu const MemRegion *R = V.getAsRegion(); 1249b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 1259b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu if (!R || !R->hasStackStorage()) 1269b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu return; 1279b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu 1289b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu if (R->hasStackStorage()) { 129f85e193739c953358c865005855253af4f68a497John McCall // Automatic reference counting automatically copies blocks. 130f85e193739c953358c865005855253af4f68a497John McCall if (C.getASTContext().getLangOptions().ObjCAutoRefCount && 131f85e193739c953358c865005855253af4f68a497John McCall isa<BlockDataRegion>(R)) 132f85e193739c953358c865005855253af4f68a497John McCall return; 133f85e193739c953358c865005855253af4f68a497John McCall 1349b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu EmitStackError(C, R, RetE); 1359b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu return; 1369b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu } 1379b1468311d625ac8920adda5440ce8ffb1a5a5d2Zhongxing Xu} 1381622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu 139af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaksvoid StackAddrEscapeChecker::checkEndPath(CheckerContext &Ctx) const { 140af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks const ProgramState *state = Ctx.getState(); 141551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 142551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek // Iterate over all bindings to global variables and see if it contains 143551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek // a memory region in the stack space. 144551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek class CallBack : public StoreManager::BindingsHandler { 145551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek private: 146af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks CheckerContext &Ctx; 147551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek const StackFrameContext *CurSFC; 148551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek public: 1495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::pair<const MemRegion*, const MemRegion*>, 10> V; 150551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 151af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks CallBack(CheckerContext &CC) : 152af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Ctx(CC), 153af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks CurSFC(CC.getPredecessor()->getLocationContext()->getCurrentStackFrame()) 154af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks {} 155551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 156551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek bool HandleBinding(StoreManager &SMgr, Store store, 157551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek const MemRegion *region, SVal val) { 158551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 159551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek if (!isa<GlobalsSpaceRegion>(region->getMemorySpace())) 160551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek return true; 161551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 162551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek const MemRegion *vR = val.getAsRegion(); 163551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek if (!vR) 164551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek return true; 165f85e193739c953358c865005855253af4f68a497John McCall 166f85e193739c953358c865005855253af4f68a497John McCall // Under automated retain release, it is okay to assign a block 167f85e193739c953358c865005855253af4f68a497John McCall // directly to a global variable. 168af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks if (Ctx.getASTContext().getLangOptions().ObjCAutoRefCount && 169f85e193739c953358c865005855253af4f68a497John McCall isa<BlockDataRegion>(vR)) 170f85e193739c953358c865005855253af4f68a497John McCall return true; 171f85e193739c953358c865005855253af4f68a497John McCall 172551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek if (const StackSpaceRegion *SSR = 173551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek dyn_cast<StackSpaceRegion>(vR->getMemorySpace())) { 174551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek // If the global variable holds a location in the current stack frame, 175551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek // record the binding to emit a warning. 176a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek if (SSR->getStackFrame() == CurSFC) 177a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek V.push_back(std::make_pair(region, vR)); 1781622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu } 179551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 180551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek return true; 1811622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu } 182551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek }; 183551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 184af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks CallBack cb(Ctx); 185551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek state->getStateManager().getStoreManager().iterBindings(state->getStore(),cb); 186a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 187a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek if (cb.V.empty()) 188551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek return; 189551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 190551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek // Generate an error node. 1910bd6b110e908892d4b5c8671a9f435a1d72ad16aAnna Zaks ExplodedNode *N = Ctx.addTransition(state); 192551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek if (!N) 193551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek return; 194a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 195551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek if (!BT_stackleak) 196af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis BT_stackleak.reset( 197a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek new BuiltinBug("Stack address stored into global variable", 198a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek "Stack address was saved into a global variable. " 199a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek "This is dangerous because the address will become " 200af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis "invalid after returning from the function")); 201551bd1f9191af0eecdc29764e34e01803c73ae31Ted Kremenek 202a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek for (unsigned i = 0, e = cb.V.size(); i != e; ++i) { 203a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek // Generate a report for this bug. 204a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek llvm::SmallString<512> buf; 205a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek llvm::raw_svector_ostream os(buf); 206a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek SourceRange range = GenName(os, cb.V[i].second, 207af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Ctx.getSourceManager()); 208a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek os << " is still referred to by the global variable '"; 209a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek const VarRegion *VR = cast<VarRegion>(cb.V[i].first->getBaseRegion()); 210b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer os << *VR->getDecl() 211a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek << "' upon returning to the caller. This will be a dangling reference"; 212e172e8b9e7fc67d7d03589af7e92fe777afcf33aAnna Zaks BugReport *report = new BugReport(*BT_stackleak, os.str(), N); 213a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek if (range.isValid()) 214a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek report->addRange(range); 215a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek 216af498a28797c075c48d7e943df5f5a8e78ed8eb0Anna Zaks Ctx.EmitReport(report); 217a8166156a6414ddd6a68514dc4f48e95d2259977Ted Kremenek } 2181622a547971cee50e386b4cdfe62ed1fcee1036dZhongxing Xu} 219af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis 220f5d2ef4a61e70eb2bcc3f4872e7095cf19d20163Ted Kremenekvoid ento::registerStackAddrEscapeChecker(CheckerManager &mgr) { 221f5d2ef4a61e70eb2bcc3f4872e7095cf19d20163Ted Kremenek mgr.registerChecker<StackAddrEscapeChecker>(); 222af5800a1e287990bb547e052f257adeeae5ab476Argyrios Kyrtzidis} 223