[clang] default clause replaced by otherwise clause for metadirective in OpenMP 5.2 (PR #128640)

[Alexey Bataev via cfe-commits]

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@@ -1660,6 +1660,10 @@ def err_omp_expected_colon : Error<"missing ':' in %0">;
 def err_omp_missing_comma : Error< "missing ',' after %0">;
 def err_omp_expected_context_selector
     : Error<"expected valid context selector in %0">;
+def err_omp_unknown_clause
+    : Error<"expected an OpenMP clause">;
+def warn_omp_default_deprecated : Warning<"'default' clause for"
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alexey-bataev wrote:

I think better to add operands here and use them to allow reusing this warning for future changes

https://github.com/llvm/llvm-project/pull/128640