Re: [patch V2a 2/6] kbuild: Disable CC_HAS_ASM_GOTO_OUTPUT on clang < version 17

[Linus Torvalds]

On Mon, 29 Sept 2025 at 04:10, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
> >
> > Ah, d'0h indeed.
> >
> > void b(void **);void* c();int f(void){{asm goto(""::::l0);return 0;l0:return 1;}void *x __attribute__((cleanup(b))) = c();{asm goto(""::::l1);return 2;l1:return 1;}}
> >
> > Seems to still finger the issue on x86_64. That should build on !x86
> > too, right?
>
> Thanks, builds fine on arm32, arm64, riscv, m68k, powerpc, mips, s390.

Ok, I just applied that fix directly. It's clearly not a fatal bug
since it just falls back on the non-optimal code, but it's one of
those "silly and subtle code generation issues" so I'd rather have it
fixed asap in the upstream kernel.

Geert, thanks for noticing.

             Linus