[Bug tree-optimization/56501] [4.6/4.7 Regression] gcc 4.6 ICE on noreturn function at -Os and above

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56501



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



           What    |Removed                     |Added

----------------------------------------------------------------------------

           Priority|P3                          |P2

             Status|UNCONFIRMED                 |ASSIGNED

   Last reconfirmed|                            |2013-04-03

         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org

                   |gnu.org                     |

     Ever Confirmed|0                           |1



--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-03 
10:10:06 UTC ---

Testing



Index: gcc/tree-switch-conversion.c

===================================================================

--- gcc/tree-switch-conversion.c        (revision 197348)

+++ gcc/tree-switch-conversion.c        (working copy)

@@ -283,7 +283,12 @@ check_process_case (tree cs)

          return false;

        }



-      e = single_succ_edge (label_bb);

+      if (!single_succ_p (label_bb))

+       {

+         info.reason

+           = "  Bad case - a non-final BB without a single successor\n";

+         return false;

+       }

       following_bb = single_succ (label_bb);

     }