[llvm] [clang-tools-extra] [clang] [Clang] Fix : More Detailed "No expected directives found" (PR #78338)

[Shourya Goel via cfe-commits]

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@@ -1098,7 +1098,14 @@ void VerifyDiagnosticConsumer::CheckDiagnostics() {
     // Produce an error if no expected-* directives could be found in the
     // source file(s) processed.
     if (Status == HasNoDirectives) {
-      Diags.Report(diag::err_verify_no_directives).setForceEmit();
+      std::string Err_Directive;
+      if (Diags.getDiagnosticOptions().VerifyPrefixes.empty()) {
+        Err_Directive = "expected";
+      } else {
+        Err_Directive = *Diags.getDiagnosticOptions().VerifyPrefixes.begin();
+      }
+      Diags.Report(diag::err_verify_no_directives).setForceEmit()
+          << Err_Directive;
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Sh0g0-1758 wrote:

Please let me know if we are doing this also in this PR. I think its best to raise a separate issue for the same as LLVM PR standards imply.

https://github.com/llvm/llvm-project/pull/78338