[Bug tree-optimization/36504] [4.3/4.4 regression] ICE when building xorg-server with -O3 -fprefetch-loop-arrays

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-06-12 09:29 -------
Program received signal SIGSEGV, Segmentation fault.
0x00000000008be25d in dr_analyze_alias (dr=0x1424660)
    at /space/rguenther/src/svn/gcc-4_3-branch/gcc/tree-data-ref.c:769
769       if (DECL_P (base))
(gdb) print base
$1 = (tree) 0x0
(gdb) call debug_generic_expr (dr->ref)
VIEW_CONVERT_EXPR<struct ureg>(0)

eventually the DR code should be more robust here.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |spop at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
          Component|target                      |tree-optimization
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
      Known to fail|4.3.1                       |4.3.1 4.4.0
   Last reconfirmed|0000-00-00 00:00:00         |2008-06-12 09:29:19
               date|                            |
            Summary|[4.3 regression] ICE when   |[4.3/4.4 regression] ICE
                   |building xorg-server with - |when building xorg-server
                   |O3 -fprefetch-loop-arrays   |with -O3 -fprefetch-loop-
                   |                            |arrays
   Target Milestone|---                         |4.3.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36504