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From: "arsen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/112534] [14 regression] build failure after
 r14-5424-gdb50aea6259545 using gcc 4.8.5
Date: Wed, 15 Nov 2023 14:27:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112534

--- Comment #4 from Arsen Arsenovi=C4=87 <arsen at gcc dot gnu.org> ---
(In reply to Bruno Haible from comment #2)
> > gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)=20
> > gcc -std=3Dgnu99 ...
> > error: unknown type name 'max_align_t'
>=20
> The type 'max_align_t' exists in C11, but not in C99, as can be seen from
> these uses of gcc 4.8.5:
> $ cat foo.c
> #include <stddef.h>
> max_align_t x;
> $ gcc -std=3Dc11 -c foo.c
> $ gcc -std=3Dgnu11 -c foo.c
> $ gcc -std=3Dc99 -c foo.c
> foo.c:2:1: error: unknown type name =E2=80=98max_align_t=E2=80=99
>  max_align_t x;
>  ^
> $ gcc -std=3Dgnu99 -c foo.c
> foo.c:2:1: error: unknown type name =E2=80=98max_align_t=E2=80=99
>  max_align_t x;
>  ^
>=20
> But this occurs in the build tree of gettext-runtime, and this package us=
es
> AC_PROG_CC, which adds option -std=3Dgnu11 if supported (this is in GNU
> Autoconf since version 2.70).
>=20
> Maybe some configure file was built with Autoconf 2.69 and older and thus
> does not add -std=3Dgnu11 ?

The toolchain tree is generated with AC2.69, indeed.  The gettext-runtime f=
iles
should be unaltered from the release gettext tarball, though.

> Or some other configure in the build tree has determined CC=3D"gcc
> -std=3Dgnu99", and this setting has been propagated into gettext-runtime,
> overriding the findings from gettext-runtime/configure ?=