https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90051
simon at pushface dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |simon at pushface dot org --- Comment #1 from simon at pushface dot org --- That would be g-catiio. Still no %Z in gcc version 9.0.1 20190323 (experimental) (GCC); %Z results in GNAT.CALENDAR.TIME_IO.PICTURE_ERROR.