[libcxx-commits] [libcxx] [libc++][string] Add constexpr initialization stress test (PR #184723)

[A. Jiang via libcxx-commits]

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frederick-vs-ja wrote:

IMO it would be better to put this test file in the `libcxx/test/libcxx` subdirectory. The tested limit is very implementation-specific.

https://github.com/llvm/llvm-project/pull/184723