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

[via cfe-commits]

cor3ntin wrote:

> Using an extra bit for that in `Decl` (that is the base class of all declaration), seems a bit heavy handed as bits in that part of the astnode are precious.
> Did you consider storing the EllipsisLoc in CXXCatchStmt ?

Please address this question first. Thanks!

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