================
@@ -4928,8 +4928,9 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl
GD, unsigned BuiltinID,
// Look at the argument type to determine whether this is a volatile
// operation. The parameter type is always volatile.
QualType PtrTy = E->getArg(0)->IgnoreImpCasts()->getType();
----------------
efriedma-quic wrote:
IgnoreImpCasts is usually wrong; in general, it's going to find an unrelated
type.
If __atomic_test_and_set is overloaded to have both a volatile and non-volatile
variant, it should be using custom type-checking in Sema.
https://github.com/llvm/llvm-project/pull/114218
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