Re: [PATCH] sigsegv: Fix build on ppc/musl

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> On 13 Mar 2022, at 14:17, Bruno Haible <[email protected]> wrote:
>=20
> Eric Blake wrote:
>> On Wed, Mar 09, 2022 at 11:37:14PM -0800, Khem Raj wrote:
>>> mcontext is not a standard layout so glibc and musl differ sadly.
>>>=20
>>> Fixes
>>> ../../m4-1.4.19/lib/sigsegv.c: In function 'sigsegv_handler':        =
                                                                         =
                                              =
../../m4-1.4.19/lib/sigsegv.c:223:75: error: 'mcontext_t' has no member =
named 'uc_regs'; did you mean 'gregs'?                                   =
                                             223 | #    define =
SIGSEGV_FAULT_STACKPOINTER  ((ucontext_t *) =
ucp)->uc_mcontext.uc_regs->gregs[1]                                      =
                                                         |               =
                                                            ^~~~~~~
>>=20
>> Thanks for the report.  As this file comes from gnulib, the fix needs
>> to go there first.
>=20
> Thanks for the report. I'm adding this patch to GNU libsigsegv:
> =
https://git.savannah.gnu.org/gitweb/?p=3Dlibsigsegv.git;a=3Dcommitdiff;h=3D=
a6ff69873110c0a8ba6f7fd90532dbc11224828c
>=20
> and then this (derived) patch to Gnulib.
>=20
> I couldn't verify that it works, since there is no Linux distro that =
is based
> on musl libc and is ported to Linux/powerpc (32-bit).

There's at least Gentoo, Ad=C3=A9lie, and at least for now, Void.

Thanks for adding the patch and thanks to Khem for reporting it.

Best,
sam

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