[clang] [Clang][CWG1815] Support lifetime extension of temporary created by aggregate initialization using a default member initializer (PR #87933)

[Zequan Wu via cfe-commits]

ZequanWu wrote:

Heads up. This causes clang to crash on some code. I'm running creduce to reduce the cpp source file.

https://github.com/llvm/llvm-project/pull/87933