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-rw-r--r--clang/lib/StaticAnalyzer/EntoSA/Checkers/CastSizeChecker.cpp91
1 files changed, 0 insertions, 91 deletions
diff --git a/clang/lib/StaticAnalyzer/EntoSA/Checkers/CastSizeChecker.cpp b/clang/lib/StaticAnalyzer/EntoSA/Checkers/CastSizeChecker.cpp
deleted file mode 100644
index 9329ea39d45..00000000000
--- a/clang/lib/StaticAnalyzer/EntoSA/Checkers/CastSizeChecker.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-//=== CastSizeChecker.cpp ---------------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// CastSizeChecker checks when casting a malloc'ed symbolic region to type T,
-// whether the size of the symbolic region is a multiple of the size of T.
-//
-//===----------------------------------------------------------------------===//
-#include "clang/AST/CharUnits.h"
-#include "clang/StaticAnalyzer/BugReporter/BugType.h"
-#include "clang/StaticAnalyzer/PathSensitive/CheckerVisitor.h"
-#include "ExprEngineInternalChecks.h"
-
-using namespace clang;
-using namespace ento;
-
-namespace {
-class CastSizeChecker : public CheckerVisitor<CastSizeChecker> {
- BuiltinBug *BT;
-public:
- CastSizeChecker() : BT(0) {}
- static void *getTag();
- void PreVisitCastExpr(CheckerContext &C, const CastExpr *B);
-};
-}
-
-void *CastSizeChecker::getTag() {
- static int x;
- return &x;
-}
-
-void CastSizeChecker::PreVisitCastExpr(CheckerContext &C, const CastExpr *CE) {
- const Expr *E = CE->getSubExpr();
- ASTContext &Ctx = C.getASTContext();
- QualType ToTy = Ctx.getCanonicalType(CE->getType());
- PointerType *ToPTy = dyn_cast<PointerType>(ToTy.getTypePtr());
-
- if (!ToPTy)
- return;
-
- QualType ToPointeeTy = ToPTy->getPointeeType();
-
- // Only perform the check if 'ToPointeeTy' is a complete type.
- if (ToPointeeTy->isIncompleteType())
- return;
-
- const GRState *state = C.getState();
- const MemRegion *R = state->getSVal(E).getAsRegion();
- if (R == 0)
- return;
-
- const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R);
- if (SR == 0)
- return;
-
- SValBuilder &svalBuilder = C.getSValBuilder();
- SVal extent = SR->getExtent(svalBuilder);
- const llvm::APSInt *extentInt = svalBuilder.getKnownValue(state, extent);
- if (!extentInt)
- return;
-
- CharUnits regionSize = CharUnits::fromQuantity(extentInt->getSExtValue());
- CharUnits typeSize = C.getASTContext().getTypeSizeInChars(ToPointeeTy);
-
- // Ignore void, and a few other un-sizeable types.
- if (typeSize.isZero())
- return;
-
- if (regionSize % typeSize != 0) {
- if (ExplodedNode *errorNode = C.generateSink()) {
- if (!BT)
- BT = new BuiltinBug("Cast region with wrong size.",
- "Cast a region whose size is not a multiple of the"
- " destination type size.");
- RangedBugReport *R = new RangedBugReport(*BT, BT->getDescription(),
- errorNode);
- R->addRange(CE->getSourceRange());
- C.EmitReport(R);
- }
- }
-}
-
-
-void ento::RegisterCastSizeChecker(ExprEngine &Eng) {
- Eng.registerCheck(new CastSizeChecker());
-}
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