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In-Reply-To: <87r1w6d1lz.fsf@mid.deneb.enyo.de>
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Wed, 29 Apr 2020 05:44:19 -0700
Message-ID: <CAMe9rOrHVc5jdz0+6qpYgzeEqRrj0Aon=mz6o24w0Y6um1VM4Q@mail.gmail.com>
Subject: Re: glibc master won't build with GCC 10
To: Florian Weimer <fw@deneb.enyo.de>
Cc: Andrew Pinski via Libc-alpha <libc-alpha@sourceware.org>,
 Andrew Pinski <pinskia@gmail.com>
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On Wed, Apr 29, 2020 at 3:31 AM Florian Weimer <fw@deneb.enyo.de> wrote:
>
> * Andrew Pinski via Libc-alpha:
>
> > This should have been fixed already:
> > https://sourceware.org/bugzilla/show_bug.cgi?id=3D25097
> >
> > Thanks,
> > Andrew
> >
> > On Tue, Apr 28, 2020 at 3:54 PM H.J. Lu via Libc-alpha
> > <libc-alpha@sourceware.org> wrote:
> >>
> >> commit 6d246cb852d3c5ab721dc583112a59ac47dc374e
> >> Author: Florian Weimer <fweimer@redhat.com>
> >> Date:   Tue Apr 28 12:10:32 2020 +0200
> >>
> >>     misc: Remove sstk from the autogenerated system call list
> >>
> >>     This change should not have an effect because the system call was
> >>     never defined.  Also add the misssing attribute_compat_text_sectio=
n
> >>     attribute to the sstk function (a minor optimization).  Also updat=
e the
> >>     NEWS file to document the change.
> >>
> >>     Fixes commit 9cc93ba0973ad04ee26c515a1552afb85e73c6ba
> >>     ("misc: Turn sstk into a compat symbol").
> >>
> >> won't build with GCC 10:
> >>
> >> rtld.c: In function =E2=80=98dl_main=E2=80=99:
> >> rtld.c:1016:27: error: array subscript =E2=80=98cnt=E2=80=99 is outsid=
e the bounds of
> >> an interior zero-length array =E2=80=98struct auditstate[0]=E2=80=99
> >> [-Werror=3Dzero-length-bounds]
> >>  1016 |    GL(dl_rtld_map).l_audit[cnt].cookie =3D (intptr_t) &GL(dl_r=
tld_map);
> >> In file included from ../include/dlfcn.h:4,
> >>                  from rtld.c:20:
> >> ../include/link.h:335:7: note: while referencing =E2=80=98l_audit=E2=
=80=99
> >>   335 |     } l_audit[0];
> >>       |       ^~~~~~~
> >> cc1: all warnings being treated as errors
> >> make[5]: *** [../o-iterator.mk:9:
> >> /export/build/gnu/tools-build/glibc/build-x86_64-linux/elf/rtld.os]
> >> Error 1
>
> Agreed, this error doesn't look like something from glibc master to
> me.  master does not contain the string =E2=80=9Cl_audit[0]=E2=80=9D anym=
ore.

Never mind.  Pilot error.

--=20
H.J.