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Validate the return type when checking if a function is malloc.

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Fixes PR11426. Not sure if a test case with a "wrong" malloc would be useful.

llvm-svn: 145106
This commit is contained in:
Benjamin Kramer 2011-11-23 17:58:47 +00:00
parent 3c1878ef53
commit f7f6231b4b
1 changed files with 4 additions and 4 deletions
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8
lib/Analysis/MemoryBuiltins.cpp
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@ -48,10 +48,10 @@ static bool isMallocCall(const CallInst *CI) {
// FIXME: workaround for PR5130, this will be obsolete when a nobuiltin
// attribute will exist.
FunctionType *FTy = Callee->getFunctionType();
if (FTy->getNumParams() != 1)
return false;
return FTy->getParamType(0)->isIntegerTy(32) ||
FTy->getParamType(0)->isIntegerTy(64);
return FTy->getReturnType() == Type::getInt8PtrTy(FTy->getContext()) &&
FTy->getNumParams() == 1 &&
(FTy->getParamType(0)->isIntegerTy(32) ||
FTy->getParamType(0)->isIntegerTy(64));
}
/// extractMallocCall - Returns the corresponding CallInst if the instruction