[libcxx-commits] [libcxx] [libc++] Make sure `flat_{multi}map::key_compare` handle `boolean-testable` correctly (PR #132621)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne commented:

Can we add tests similarly to what we do in `libcxx/test/std/algorithms/ranges_robust_against_nonbool.compile.pass.cpp`?

https://github.com/llvm/llvm-project/pull/132621