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[asan] workaround for PR16277: don't instrument AllocaInstr with alignment more than the redzone size

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184928 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2013-06-26 09:49:52 +00:00
parent 20985711c7
commit d4429214a2
2 changed files with 21 additions and 1 deletions
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3
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@@ -451,7 +451,7 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
StackAlignment = std::max(StackAlignment, AI.getAlignment());
AllocaVec.push_back(&AI);
uint64_t AlignedSize = getAlignedAllocaSize(&AI);
uint64_t AlignedSize = getAlignedAllocaSize(&AI);
TotalStackSize += AlignedSize;
}
@@ -488,6 +488,7 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
bool isInterestingAlloca(AllocaInst &AI) {
return (!AI.isArrayAllocation() &&
AI.isStaticAlloca() &&
AI.getAlignment() <= RedzoneSize() &&
AI.getAllocatedType()->isSized());
}