[Bug tree-optimization/28934] New: [4.2 regression] in verify_loop_structure, at cfgloop.c:1268 (edge should not be marked irreducible)

[tbm at cyrius dot com]

ICE at -O3:

(sid)32:[EMAIL PROTECTED]: ~] /usr/lib/gcc-snapshot/bin/gcc -c -O3
exuberant-ctags-ruby.c
exuberant-ctags-ruby.c: In function 'parseIdentifier':
exuberant-ctags-ruby.c:50: error: edge from 32 to 34 should not be marked
irreducible
exuberant-ctags-ruby.c:50: error: basic block 34 should not be marked
irreducible
exuberant-ctags-ruby.c:50: error: edge from 34 to 20 should not be marked
irreducible
exuberant-ctags-ruby.c:50: internal compiler error: in verify_loop_structure,
at cfgloop.c:1268
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
zsh: exit 1     /usr/lib/gcc-snapshot/bin/gcc -c -O3 exuberant-ctags-ruby.c
(sid)33:[EMAIL PROTECTED]: ~] /usr/lib/gcc-snapshot/bin/gcc -c -O2
exuberant-ctags-ruby.c
(sid)34:[EMAIL PROTECTED]: ~]


-- 
           Summary: [4.2 regression] in verify_loop_structure, at
                    cfgloop.c:1268 (edge should not be marked irreducible)
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28934