[Bug treelang/55412] New: pr47276.c fails with -fpic option.

[Bug treelang/55412] New: pr47276.c fails with -fpic option.

[aivchenk at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55412

             Bug #: 55412
           Summary: pr47276.c fails with -fpic option.
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: treelang
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: aivchenk@gmail.com


When trying to compile pr47276.c with additional -fpic option I've got the
following error:

pr47276.c:36:1: warning: asm declaration ignored due to conflict with previous
rename [-Wpragmas]
 extern __typeof (__vsyslog_chk) __vsyslog_chk __asm__ ("" ASMNAME
("__GI___vsyslog_chk")) __attribute__ ((visibility ("hidden")));
 ^
../../../../gcc/gcc/testsuite/gcc.dg/pr47276.c:25:123: error:
‘__EI___vsyslog_chk’ aliased to undefined symbol ‘__GI___vsyslog_chk’
 extern __typeof (__vsyslog_chk) __EI___vsyslog_chk __asm__("" ASMNAME
("__vsyslog_chk")); extern __typeof (__vsyslog_chk) __EI___vsyslog_chk
__attribute__((alias ("" "__GI___vsyslog_chk")));

[Bug treelang/55412] pr47276.c fails with -fpic option.

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55412

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-20 12:15:01 UTC ---
This fails all the way back to gcc 4.0 this way, and given that glibc itself
builds fine even with gcc 4.7, I assume the testcase just doesn't match what
glibc contained accurately.

[Bug treelang/55412] pr47276.c fails with -fpic option.

[aivchenk at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55412

--- Comment #2 from Alexander Ivchenko <aivchenk at gmail dot com> 2012-11-21 07:46:20 UTC ---
Created attachment 28751
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28751
Simple reproducer

[Bug treelang/55412] pr47276.c fails with -fpic option.

[aivchenk at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55412

--- Comment #3 from Alexander Ivchenko <aivchenk at gmail dot com> 2012-11-21 07:48:23 UTC ---
I tried to narrow down the problem and changed the test a little bit.
(The relative order of declarations remains the same; Just grouped the coupled
declarations)
This changed test passes with -fno-pic and fails with -fpic.

BUT if we comment out the first group of definition/declarations
the test will fail with -fno-pic with the same problem, eventhough
those two groups are completely independent of each other

test case is attached in the previous comment

[Bug middle-end/55412] pr47276.c fails with -fpic option.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55412

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic, rejects-valid
   Target Milestone|---                         |5.0
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed in GCC 5.