[clang] Issue #63106: [сlang] Representation of ellipsis in AST (PR #80976)

[Chuanqi Xu via cfe-commits]

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@@ -2698,9 +2698,16 @@ StmtResult Parser::ParseCXXCatchBlock(bool FnCatch) {
     Declarator ExDecl(DS, Attributes, DeclaratorContext::CXXCatch);
     ParseDeclarator(ExDecl);
     ExceptionDecl = Actions.ActOnExceptionDeclarator(getCurScope(), ExDecl);
-  } else
-    ConsumeToken();
-
+  }
+  else {
+  CatchLoc = ConsumeToken();
+  // explicitly creating a var of type no-type for '...' and marking it as catch_all
+  ParsedAttributes Attributes(AttrFactory);
+  DeclSpec DS(AttrFactory);
+  Declarator ExDecl(DS, Attributes, DeclaratorContext::BlockLiteral);
+  ParseDeclarator(ExDecl);
+  ExceptionDecl = Actions.ActOnExceptionDeclarator(getCurScope(), ExDecl, true);
+  }
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ChuanqiXu9 wrote:

I am hesitate on this. IIUC, previously the catch(...) format is reprensented as the exception decl as nullptr? Then if yes, we should be able to reuse that.

https://github.com/llvm/llvm-project/pull/80976