https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91830
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> --- Thanks. I also just noticed I missed the "x86_64-linux" at the beginning on comment #0. The way I configure gdb-binutils, bfd/mach-o.c doesn't get compiled (I didn't use --enable-targets=all), but I was able to reproduce the warning by compiling it by hand so I can confirm the warning. Let me see where the problem is.