[clang] Fix crash when an attribute is applied to pragma attribute/pragma dump (PR #137880)

[Erich Keane via cfe-commits]

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@@ -526,10 +526,14 @@ StmtResult Parser::ParseStatementOrDeclarationAfterAttributes(
     return ParsePragmaLoopHint(Stmts, StmtCtx, TrailingElseLoc, CXX11Attrs);
 
   case tok::annot_pragma_dump:
+    ProhibitAttributes(CXX11Attrs);
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erichkeane wrote:

No, both of those successfully produce a `statement` out of this, so they won't assert.  So any attributes you try to apply will either be valid, or fail because they don't apply to a statement.

The difference in these two is that they don't result in either an error OR a valid statement.

https://github.com/llvm/llvm-project/pull/137880