https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425
--- Comment #20 from Jan Engelhardt <jengelh at inai dot de> --- Seems like the short route is to add a new attribute ((warn_unused_result_with_void_cancelling)) that exhibits the "desired" behavior of (void) cancelling the warning, and then make glibc use that. Simple, no?
