http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37014

--- a/gcc/dojump.c
+++ b/gcc/dojump.c
@@ -307,8 +307,6 @@
 	break;
       }
 
-    case TRUTH_ANDIF_EXPR:
-    case TRUTH_ORIF_EXPR:
     case COMPOUND_EXPR:
       /* Lowered by gimplify.c.  */
       gcc_unreachable ();
@@ -518,6 +516,7 @@
       if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
 	goto normal;
 
+    case TRUTH_ANDIF_EXPR:
       if (if_false_label == NULL_RTX)
         {
 	  drop_through_label = gen_label_rtx ();
@@ -538,6 +537,7 @@
       if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
 	goto normal;
 
+    case TRUTH_ORIF_EXPR:
       if (if_true_label == NULL_RTX)
 	{
           drop_through_label = gen_label_rtx ();
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8563,7 +8563,10 @@
       /* If no set-flag instruction, must generate a conditional store
 	 into a temporary variable.  Drop through and handle this
 	 like && and ||.  */
-
+      /* Although TRUTH_{AND,OR}IF_EXPR aren't present in GIMPLE, they
+	 are occassionally created by folding during expansion.  */
+    case TRUTH_ANDIF_EXPR:
+    case TRUTH_ORIF_EXPR:
       if (! ignore
 	  && (target == 0
 	      || modifier == EXPAND_STACK_PARM
@@ -8761,8 +8774,6 @@
     case POSTDECREMENT_EXPR:
     case LOOP_EXPR:
     case EXIT_EXPR:
-    case TRUTH_ANDIF_EXPR:
-    case TRUTH_ORIF_EXPR:
       /* Lowered by gimplify.c.  */
       gcc_unreachable ();
 
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20080812-1.c
@@ -0,0 +1,21 @@
+/* PR middle-end/37014 */
+
+void bar (signed char *);
+
+void
+foo (int x, int y)
+{
+  int i;
+  signed char a[123], b[123], c;
+  for (i = 0; i < 123; i++)
+    {
+      int e = y - x;
+      int d = e < 0 ? -e : e;
+      c = d < 75;
+      a[y] = c;
+      b[y] = c;
+      y--;
+    }
+  bar (b);
+  bar (a);
+}