[clang] [Clang] Introduce FunctionParmPackDecl for expanded lambda captures (PR #107995)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

@cor3ntin I thought introducing a new Decl node only to ensure the invariance of the protocol of TransformDecl() seemed a bit waste, but I don't know if there's a better approach, so I left it as a draft.

Do we have this issue surfaced recently other than the original one?


https://github.com/llvm/llvm-project/pull/107995