[Bug middle-end/18861] [4.0 Regression] ICE Segmentation fault in try_crossjump_to_edge at ../../gcc/gcc/cfgcleanup.c:1637 with two switches (table jumps)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-06 
23:07 -------
: Search converges between 2004-10-26-161001-trunk (#611) and 
2004-11-03-014001-trunk 
(#612).
Confirmed.
Here is a testcase down to one function:
extern void abort (void) __attribute__ ((__noreturn__));
int reversed_comparison_code_parts (int code, int code2)
{
  int D1131;
  if (code >= 3)
  {
    switch (code)
      {
        case 3: return 4; 
        case 4: return 3;
        case 5: return 6;
        case 6: return 7;
        case 7: return 8;
        case 8: return 5;
        default : abort ();
      }
  }  
  switch (code)
    {
      case 3:  return 4;
      case 4:  return 3;
      case 5:  return 6;
      case 6:  return 7;
      case 7:  return 8;
      case 8:  return 5;
      default : abort ();
    }
}

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-12-06 23:07:59
               date|                            |
            Summary|[4.0 Regression] ICE        |[4.0 Regression] ICE
                   |Segmentation fault in       |Segmentation fault in
                   |try_crossjump_to_edge at    |try_crossjump_to_edge at
                   |../../gcc/gcc/cfgcleanup.c:1|../../gcc/gcc/cfgcleanup.c:1
                   |637                         |637 with two switches (table
                   |                            |jumps)
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18861