[Bug libfortran/127893] [14/15/16/17 regression] Severe libgfortran parallel-I/O performance regression on macOS since r14-6425

[jvdelisle at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127893

--- Comment #19 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I will backport to 16 first and then 15. The additional prerequsite commits
have been around for a while with no problems reported so all should be good.