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-rw-r--r--clang/lib/CodeGen/CGExpr.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 15829888ead..7359006677f 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -549,6 +549,11 @@ void CodeGenFunction::EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc,
if (Ptr->getType()->getPointerAddressSpace())
return;
+ // Don't check pointers to volatile data. The behavior here is implementation-
+ // defined.
+ if (Ty.isVolatileQualified())
+ return;
+
SanitizerScope SanScope(this);
SmallVector<std::pair<llvm::Value *, SanitizerMask>, 3> Checks;
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