[Bug debug/19267] New: [4.0 regression] execute/921215-1.c fails with -fpic at -O3 -g

[ghazi at gcc dot gnu dot org]

When running the testsuite with -fpic/-fPIC, I get an additional failure in the 
testsuite with mainline:

FAIL: gcc.c-torture/execute/921215-1.c compilation,  -O3 -g 

The regression appeared sometime in the last day or so between these postings:
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00135.html
http://gcc.gnu.org/ml/gcc-testresults/2005-01/msg00179.html

The compilation dies like this:

921215-1.c:22: internal compiler error: in gen_subprogram_die, at 
dwarf2out.c:11207

in the source we have:
11207             gcc_assert (errorcount);


The problem is that errorcount is zero, so the gcc_assert() dies.

To reproduce, compile the following with:
cc1 -fpreprocessed 921215-1.i -quiet -dumpbase 921215-1.c -mtune=pentiumpro -
auxbase 921215-1 -g -O3 -version -fpic -o 921215-1.s


# 1 "921215-1.c"
# 1 "/home/ghazi/tmpdisk/gcc-testing/40/egcc-CVS20050104/gcc/testsuite/gcc.c-
torture/execute//"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "921215-1.c"
main()
{

  void p(void ((*f) (void ())))
    {
      void r()
 {
   foo ();
 }

      f(r);
    }

  void q(void ((*f)()))
    {
      f();
    }

  p(q);

  exit(0);
}

foo(){}

-- 
           Summary: [4.0 regression] execute/921215-1.c fails with -fpic at
                    -O3 -g
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ghazi at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19267