[libcxx-commits] [libcxx] [libcxx] Fix build for glibc < 2.27 (PR #121893)

[Yi Kong via libcxx-commits]

kongy wrote:

Android is still using glibc 2.17 on the host, but we're planning to move to musl. There are still some issues preventing us from doing so. We are not planning to upgrade glibc before the migration.

Since this requires minimal effort to support (just a version macro check), I hope we can continue supporting older versions until it becomes genuinely difficult to maintain.

https://github.com/llvm/llvm-project/pull/121893