[clang] [Clang] Fix stack-use-after-return in TryArrayCopy by allocating OpaqueValueExpr on the ASTContext (PR #192080)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

Thank you for working on a fix! The changes should eventually also come with a release note in `clang/docs/ReleaseNotes.rst` so users know about the fix.

https://github.com/llvm/llvm-project/pull/192080