[Bug tree-optimization/51984] ICE: SIGSEGV with -O2 -fgraphite-identity

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51984

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-01-25
                 CC|                            |spop at gcc dot gnu.org
          Component|middle-end                  |tree-optimization
     Ever Confirmed|0                           |1
      Known to fail|                            |4.6.3, 4.7.0

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-25 10:43:38 UTC ---
Confirmed.  Segfaults in cloog ...

#0  0x00007ffff7bd2397 in cloog_domain_stride () from /usr/lib64/libcloog.so.0
#1  0x00007ffff7bc541c in ?? () from /usr/lib64/libcloog.so.0
#2  0x00007ffff7bc5d37 in cloog_loop_generate () from /usr/lib64/libcloog.so.0
#3  0x00007ffff7bd62e0 in cloog_program_generate ()
   from /usr/lib64/libcloog.so.0
#4  0x00000000012229b0 in scop_to_clast (scop=0x1bf18d0)
    at /space/rguenther/src/svn/trunk/gcc/graphite-clast-to-gimple.c:1552
#5  0x0000000001222c1d in gloog (scop=0x1bf18d0, bb_pbb_mapping=0x1bf1ae0)
    at /space/rguenther/src/svn/trunk/gcc/graphite-clast-to-gimple.c:1633
#6  0x000000000121e765 in graphite_transform_loops ()
    at /space/rguenther/src/svn/trunk/gcc/graphite.c:274

maybe we feed it something invalid, but ...