https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84521
--- Comment #21 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > You can use __builtin_setjmp and __builtin_longjmp in the same function, > only if they use a different buffer. Otherwise it is invalid. Yes, that's invalid. > CCing Eric for the other __builtin_setjmp related issues. I don't see anything special with Aarch64 that would make it impossible to support __builtin_setjmp/__builtin_longjmp properly. You can parameterize a lot of things in the back-end with TARGET_BUILTIN_SETJMP_FRAME_VALUE and various patterns like: save_stack_nonlocal restore_stack_nonlocal, nonlocal_goto_receiver, builtin_setjmp_setup, builtin_setjmp_receiver, builtin_longjmp See the documentation and existing ports.
