[clang] [Clang] Remove the PackExpansion restrictions for rewrite substitution (PR #126206)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

> I see the test references https://github.com/llvm/llvm-project/issues/124715 but you don't mention it in the summary and you don't have a release note. Does the test exercise the crash?

Oh, thanks for spotting that - I forgot it when I updated the commit body.

Will add a release note once we backport it to the 20 branch.

https://github.com/llvm/llvm-project/pull/126206