[Bug bootstrap/56689] internal compiler error: in get_loop_body, at cfgloop.c:841

[krebbel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56689

Andreas Krebbel <krebbel at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #29707|0                           |1
        is obsolete|                            |

--- Comment #3 from Andreas Krebbel <krebbel at gcc dot gnu.org> 2013-03-25 08:01:00 UTC ---
Created attachment 29717
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29717
Manually reduced testcase

cc1 -O2 t.c

t.c: In function ‘fix_register’:
t.c:6:1: error: size of loop 1 should be 7, not 8
 fix_register (const char *name, int fixed, int call_used, int nregs)
 ^
t.c:6:1: internal compiler error: in verify_loop_structure, at cfgloop.c:1640
0x80227273 verify_loop_structure()
        /home/andreas/clean/gcc-head/gcc/cfgloop.c:1640
0x8076488f perform_tree_ssa_dce
        /home/andreas/clean/gcc-head/gcc/tree-ssa-dce.c:1554
0x80764be1 tree_ssa_cd_dce
        /home/andreas/clean/gcc-head/gcc/tree-ssa-dce.c:1637
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.