https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66737
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Ilya Enkovich from comment #4)
> OK then. Testing this patch now:
>
> diff --git a/gcc/config/i386/linux-common.h b/gcc/config/i386/linux-common.h
> index 63dd8d8..232acea 100644
> --- a/gcc/config/i386/linux-common.h
> +++ b/gcc/config/i386/linux-common.h
> @@ -70,9 +70,15 @@ along with GCC; see the file COPYING3. If not see
> #endif
> #endif
>
> +#if TARGET_64BIT_DEFAULT
> +#define MPX_ARCH_64 "!m32:"
> +#else
> +#define MPX_ARCH_64 "m64:"
> +#endif
> +
> #ifndef MPX_SPEC
> #define MPX_SPEC "\
> - %{mmpx:%{fcheck-pointer-bounds:%{!static:" LINK_MPX "}}}"
> + %{mmpx:%{fcheck-pointer-bounds:%{!static:%{" MPX_ARCH_64 LINK_MPX "}}}}"
> #endif
>
> #ifndef LIBMPX_SPEC
I don't think it is correct. Please see SPEC_64 and SPEC_32 defined
in gnu-user64.h. You should define MPX_SPEC with SPEC_64 and SPEC_32.
