[clang] [Clang] Implement P3034R1 Module Declarations Shouldn’t be Macros (PR #90574)

[via cfe-commits]

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@@ -862,6 +862,15 @@ bool Preprocessor::HandleIdentifier(Token &Identifier) {
     ModuleImportExpectsIdentifier = true;
     CurLexerCallback = CLK_LexAfterModuleImport;
   }
+
+  if ((II.isModulesDeclaration() || Identifier.is(tok::kw_module)) &&
+      !InMacroArgs && !DisableMacroExpansion &&
+      (getLangOpts().Modules || getLangOpts().DebuggerSupport) &&
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yronglin wrote:

Good catch! This is definitely a mistake. It should be `CPlusPlusModules `. And the `DebuggerSupport` was used for debug mode, I followed what `import` doing.

https://github.com/llvm/llvm-project/pull/90574