[libc] [clang] [clang-tools-extra] [libcxx] [flang] [llvm] [compiler-rt] [C23] Complete support for WG14 N2508 (PR #71398)

[Mike Rice via cfe-commits]

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@@ -32,8 +32,8 @@ T tmain(T argc) {
   }
   switch (argc) {
 #pragma omp error // expected-error {{ERROR}}
-  case 1:
-#pragma omp error // expected-error {{ERROR}}
+  case 1: // FIXME: error without 'at execution' is not a stand-alone directive and so this should be accepted.
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mikerice1969 wrote:

I would remove this FIXME. I think we want 'error' to be diagnosed. The original meaning of stand-alone was directives that did not has associated user statements. This was before utility/informational directives existed. I think the intention is we only allow executable statements with associated user statements here, not declarative, utility, etc.

https://github.com/llvm/llvm-project/pull/71398