https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63939
--- Comment #7 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- It's not only a darwin issue: as libbacktrace's README says, "libbacktrace only supports ELF executables with DWARF debugging information", so obviously there are other object formats, Mach-O and PE-COFF at least, possibly some other exotic object formats(?). So a generic solution still needs to be found. Disabling testing entirely, while a large part of the functionality is present, seems like a bad idea.