[Bug middle-end/53245] [4.8 Regression] ice in expand_case

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53245

--- Comment #5 from Steven Bosscher <steven at gcc dot gnu.org> 2012-05-07 
13:57:49 UTC ---
Duh!

Index: gimplify.c
===================================================================
--- gimplify.c  (revision 187219)
+++ gimplify.c  (working copy)
@@ -1658,6 +1658,10 @@
                      && tree_int_cst_compare (high, max_value) > 0)
                    high = max_value;
                  high = fold_convert (index_type, high);
+
+                 /* We may have folded a case range to a one-value case.  */
+                 if (tree_int_cst_equal (low, high))
+                   high = NULL_TREE;
                }
            }