[Bug other/11669] New: [3.4 regression] Calling of static functions does not work (build of glibc broken)

["aj at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11669

           Summary: [3.4 regression] Calling of static functions does not
                    work (build of glibc broken)
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: other
        AssignedTo: geoffk at gcc dot gnu dot org
        ReportedBy: aj at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-linux-gnu
  GCC host triplet: i686-linux-gnu
GCC target triplet: i686-linux-gnu

This is a testcase reduced from a failure to compile glibc on i686-linux-gnu
with current GCC:

gromit:~/tmp:[0]$ /opt/gcc/3.4-devel/bin/gcc -c test-failure.c -O2     
gromit:~/tmp:[0]$ nm test-failure.o 
00000010 T call_fixup
00000000 t fixup
gromit:~/tmp:[0]$ /opt/gcc/3.4-devel/bin/gcc -c test-failure.c -O2 -DUSE_DECLARATION
gromit:~/tmp:[0]$ nm test-failure.o 
00000010 T call_fixup
         U fixup
00000000 t fixup.0

The fixup.0 declaration is wrong here.  I suspect the IMI patches and assigned
it therefore to Geoff Keating.

To reproduce use the simple follwing simple code snippet:

#if USE_DECLARATION
/* Removing the prototype makes this work.  */
static int fixup (int i) __attribute__ ((used));
#endif

static int __attribute__ ((__used__))
fixup (int i)
{
  return i+1;
}

int
call_fixup (void)
{

  asm ("call fixup\n\t");

  return 0;
}