https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78336
--- Comment #2 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to David Edelsohn from comment #1) > I thought that Darwin specifically picked up the definition from > config/darwin.h. > > I don't understand the failure because the rs6000.h logic did not change and > rs6000_asm_weaken_decl is declared in rs6000-protos.h. > > This bug report does not report the actual failure mode, it only provides a > patch, so there is no way to review the patch. I only can guess at the > problem. > > Am I to infer that rs6000_asm_weaken_decl function doesn't compile on Darwin > because SET_ASM_OP is not defined? Again, Darwin will not actually use the > function because the logic was not changed. It doesn't compile because ASM_OUTPUT_DEF is not defined for darwin. My first inclination was define ASM_OUTPUT_DEF (to say gcc_unreachable()) however, then the compilation breaks elsewhere (since varasm.c has different code paths enabled on the availability of ASM_OUTPUT_DEF).
