[Bug build/32042] New: Compilation issue for tst-resolv-short-response.c on power

[Bug build/32042] New: Compilation issue for tst-resolv-short-response.c on power

[jeevitha at linux dot ibm.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

            Bug ID: 32042
           Summary: Compilation issue for tst-resolv-short-response.c on
                    power
           Product: glibc
           Version: 2.41
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build
          Assignee: unassigned at sourceware dot org
          Reporter: jeevitha at linux dot ibm.com
                CC: carlos at redhat dot com
  Target Milestone: ---

The following commit introduces a new test case, tst-resolv-short-response,
which is causing a compilation issue with GCC 10.2.1, but not with GCC 13+.

We are receiving the following compilation error:

tst-resolv-short-response.c: In function 'response':
tst-resolv-short-response.c:36:7: error: a label can only be part of a
statement and a declaration is not a statement
   36 |       struct resolv_response_flags flags = {.rcode = rcode};
      |       ^~~~~~
make[2]: *** [../o-iterator.mk:9:
/home/tcbot/bot-worker/glibc-ppc64le-base-default/vpath/resolv/tst-resolv-short-response.o]
Error 1

The error message indicates that there is a problem with the declaration of a
struct variable immediately following a label in the code.

commit:

Author: Florian Weimer fweimer@redhat.com
Date: Wed Jul 24 12:06:47 2024 +0200
resolv: Allow short error responses to match any query (bug 31890)

Reviewed-by: DJ Delorie <dj@redhat.com>

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[Bug build/32042] Compilation issue for tst-resolv-short-response.c on power

[jeevitha at linux dot ibm.com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

Jeevitha P. <jeevitha at linux dot ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bergner at linux dot ibm.com,
                   |                            |fw at deneb dot enyo.de,
                   |                            |jeevitha at linux dot ibm.com

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[Bug build/32042] Compilation issue for tst-resolv-short-response.c on power

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at sourceware dot org   |fweimer at redhat dot com
   Last reconfirmed|                            |2024-08-01
                 CC|                            |fweimer at redhat dot com
             Status|UNCONFIRMED                 |ASSIGNED
              Flags|                            |security-
     Ever confirmed|0                           |1

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[Bug build/32042] Compilation issue for tst-resolv-short-response.c with older GCC

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Compilation issue for       |Compilation issue for
                   |tst-resolv-short-response.c |tst-resolv-short-response.c
                   |on power                    |with older GCC

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[Bug build/32042] Compilation issue for tst-resolv-short-response.c with older GCC

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted:

[PATCH] resolv: Fix tst-resolv-short-response for older GCC (bug 32042)
<https://inbox.sourceware.org/libc-alpha/87ikwk3a25.fsf@oldenburg.str.redhat.com/>

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[Bug build/32042] Compilation issue for tst-resolv-short-response.c with older GCC

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32042

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |2.41
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.41 via:

commit ec119972cb2598c04ec7d4219e20506006836f64
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Aug 1 10:46:10 2024 +0200

    resolv: Fix tst-resolv-short-response for older GCC (bug 32042)

    Previous GCC versions do not support the C23 change that
    allows labels on declarations.

    Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

I'll backport it as applicable.

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