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-rw-r--r--clang/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp49
1 files changed, 32 insertions, 17 deletions
diff --git a/clang/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp b/clang/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
index 9d6b056a2ee..9dc50df93f2 100644
--- a/clang/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
@@ -500,9 +500,24 @@ void ExprEngine::VisitCXXNewAllocatorCall(const CXXNewExpr *CNE,
// is breaking too much to evaluate the no-op symbolic cast over it, so we
// skip it for now.
ProgramStateRef State = I->getState();
- ValueBldr.generateNode(
- CNE, I,
- setCXXNewAllocatorValue(State, CNE, LCtx, State->getSVal(CNE, LCtx)));
+ SVal RetVal = State->getSVal(CNE, LCtx);
+
+ // If this allocation function is not declared as non-throwing, failures
+ // /must/ be signalled by exceptions, and thus the return value will never
+ // be NULL. -fno-exceptions does not influence this semantics.
+ // FIXME: GCC has a -fcheck-new option, which forces it to consider the case
+ // where new can return NULL. If we end up supporting that option, we can
+ // consider adding a check for it here.
+ // C++11 [basic.stc.dynamic.allocation]p3.
+ if (const FunctionDecl *FD = CNE->getOperatorNew()) {
+ QualType Ty = FD->getType();
+ if (const auto *ProtoType = Ty->getAs<FunctionProtoType>())
+ if (!ProtoType->isNothrow(getContext()))
+ State = State->assume(RetVal.castAs<DefinedOrUnknownSVal>(), true);
+ }
+
+ ValueBldr.generateNode(CNE, I,
+ setCXXNewAllocatorValue(State, CNE, LCtx, RetVal));
}
ExplodedNodeSet DstPostPostCallCallback;
@@ -559,21 +574,21 @@ void ExprEngine::VisitCXXNewExpr(const CXXNewExpr *CNE, ExplodedNode *Pred,
State = Call->invalidateRegions(blockCount);
if (!State)
return;
- }
- // If this allocation function is not declared as non-throwing, failures
- // /must/ be signalled by exceptions, and thus the return value will never be
- // NULL. -fno-exceptions does not influence this semantics.
- // FIXME: GCC has a -fcheck-new option, which forces it to consider the case
- // where new can return NULL. If we end up supporting that option, we can
- // consider adding a check for it here.
- // C++11 [basic.stc.dynamic.allocation]p3.
- if (FD) {
- QualType Ty = FD->getType();
- if (const FunctionProtoType *ProtoType = Ty->getAs<FunctionProtoType>())
- if (!ProtoType->isNothrow(getContext()))
- if (auto dSymVal = symVal.getAs<DefinedOrUnknownSVal>())
- State = State->assume(*dSymVal, true);
+ // If this allocation function is not declared as non-throwing, failures
+ // /must/ be signalled by exceptions, and thus the return value will never
+ // be NULL. -fno-exceptions does not influence this semantics.
+ // FIXME: GCC has a -fcheck-new option, which forces it to consider the case
+ // where new can return NULL. If we end up supporting that option, we can
+ // consider adding a check for it here.
+ // C++11 [basic.stc.dynamic.allocation]p3.
+ if (FD) {
+ QualType Ty = FD->getType();
+ if (const auto *ProtoType = Ty->getAs<FunctionProtoType>())
+ if (!ProtoType->isNothrow(getContext()))
+ if (auto dSymVal = symVal.getAs<DefinedOrUnknownSVal>())
+ State = State->assume(*dSymVal, true);
+ }
}
StmtNodeBuilder Bldr(Pred, Dst, *currBldrCtx);
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