https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91268
--- Comment #1 from dave.anglin at bell dot net --- Another new issue: In file included from ../../gcc/gcc/ada/adadecode.c:35: ../../gcc/gcc/ada/adadecode.c: In function 'void __gnat_decode(const char*, char *, int)': ../../gcc/gcc/ada/adadecode.c:260:34: error: array subscript has type 'char' [-Werror=char-subscripts] 260 | while (ISDIGIT (ada_name[last]) && last > 0) | ~~~~~~~~~~~~~^ ../../gcc/gcc/ada/adadecode.c:260:12: note: in expansion of macro 'ISDIGIT' 260 | while (ISDIGIT (ada_name[last]) && last > 0) | ^~~~~~~ cc1plus: all warnings being treated as errors Makefile:1118: recipe for target 'ada/adadecode.o' failed
