Vendor import of clang trunk r239412:

https://llvm.org/svn/llvm-project/cfe/trunk@239412

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp
index 23a6fc3..c3b81b6 100644
--- a/lib/Sema/SemaChecking.cpp
+++ b/lib/Sema/SemaChecking.cpp
@@ -1604,6 +1604,10 @@ ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult,
     return ExprError();
   }
 
+  // atomic_fetch_or takes a pointer to a volatile 'A'.  We shouldn't let the
+  // volatile-ness of the pointee-type inject itself into the result or the
+  // other operands.
+  ValType.removeLocalVolatile();
   QualType ResultType = ValType;
   if (Form == Copy || Form == GNUXchg || Form == Init)
     ResultType = Context.VoidTy;