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Diffstat (limited to 'lib/Transforms/Instrumentation/AddressSanitizer.cpp')
-rw-r--r--lib/Transforms/Instrumentation/AddressSanitizer.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index 057f746e052d..f8d255273b2a 100644
--- a/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -756,7 +756,8 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
bool runOnFunction() {
if (!ClStack) return false;
- if (ClRedzoneByvalArgs) copyArgsPassedByValToAllocas();
+ if (ClRedzoneByvalArgs && Mapping.Offset != kDynamicShadowSentinel)
+ copyArgsPassedByValToAllocas();
// Collect alloca, ret, lifetime instructions etc.
for (BasicBlock *BB : depth_first(&F.getEntryBlock())) visit(*BB);