https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83531
--- Comment #6 from MCCCS <mcccs at gmx dot com> --- After reading your comment, I noticed that there were two things I forgot to mention: 1 - availability.h is the file where "API_AVAILABLE" is defined for Clang. 2 - the part of the file the patch changes is 1:1 copied from AvailabilityInternal.h, so someone must've forgotten to replace after pasting. But yes, there's no need to hurry to fix it. It's existed since October 2017; no one has noticed.
