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[Bug lto/46879] New: [4.6 Regression] ICE: in separate_decls_in_region_debug_bind, at tree-parloops.c:778 with -flto -ftree-parallelize-loops -gdwarf-3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46879

           Summary: [4.6 Regression] ICE: in
                    separate_decls_in_region_debug_bind, at
                    tree-parloops.c:778 with -flto
                    -ftree-parallelize-loops -gdwarf-3
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 22700
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22700
reduced testcase

Compiler output:
$ gcc -O -flto -ftree-parallelize-loops=4 -gdwarf-3 pr46879.c  
In file included from :0:0:
pr46879.c: In function 'main':
pr46879.c:18:5: internal compiler error: in
separate_decls_in_region_debug_bind, at tree-parloops.c:778
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper:
/mnt/svn/gcc-trunk/binary-167643-lto-fortran-checking-yes-rtl-df/bin/gcc
returned 1 exit status
collect2: lto-wrapper returned 1 exit status

Tested revisions:
r167643 - crash
r165699 - crash
r161659 - OK
4.5 r166509 - OK


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