Nothing is stopping glibc from shipping a non-POSIX extension to locks / doing that standardization. Like I said, I have more interesting things to spend my time on. In my eyes POSIX is an ossified standard and dead standard that hasn’t shipped anything interesting or consequential in a very long time.

Pthreads are fine as a default for most applications but then most applications shouldn’t be using threading primitives anyway and we should be using higher levels of abstraction that user better locking primitives under the hood.