[PATCH] powerpc: Fix non-atomic stack pointer update in fortified longjmp (bug 34530)

[Joseph Myers]

On Mon, 17 Aug 2026, Florian Weimer wrote:

> diff --git a/sysdeps/powerpc/powerpc32/__longjmp-common.S b/sysdeps/powerpc/powerpc32/__longjmp-common.S
> index eb228bf4fe..9da86330f7 100644
> --- a/sysdeps/powerpc/powerpc32/__longjmp-common.S
> +++ b/sysdeps/powerpc/powerpc32/__longjmp-common.S
> @@ -30,11 +30,12 @@ ENTRY (__longjmp_symbol)
>  
>  #if defined PTR_DEMANGLE || defined CHECK_SP
>  	lwz r24,(JB_GPR1*4)(r3)
> +# ifdef PTR_DEMANGLE
> +	PTR_DEMANGLE (r24, r25)
> +# endif
>  # ifdef CHECK_SP
> -#  ifdef PTR_DEMANGLE
> -	PTR_DEMANGLE3 (r24, r24, r25)
> -#  endif
>  	CHECK_SP (r24)
> +# endif
>  	mr r1,r24
>  # endif
>  #else

This breaks the build for powerpc soft-float (error: '#else' without 
'#if').

-- 
Joseph S. Myers
josmyers@redhat.com