[libcxx-commits] [libcxx] [libc++][regex] Throw exception in the case of wrong range (PR #148231)

[A. Jiang via libcxx-commits]

https://github.com/frederick-vs-ja approved this pull request.

Thanks! I've slightly modified the PR title to avoid doubly mentioning the issue to fix.

https://github.com/llvm/llvm-project/pull/148231