(force_fit_type): Always propagate OVERFLOW.

From-SVN: r9138

diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index f0f3e698434219cbcc31ddf96dc4a8ecfd1ccdda..f8e51ec0a8ff1573d14084fe55a53c2548ff62b0 100644 (file)
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -187,7 +187,7 @@ force_fit_type (t, overflow)
 
   /* Unsigned types do not suffer sign extension or overflow.  */
   if (TREE_UNSIGNED (TREE_TYPE (t)))
-    return 0;
+    return overflow;
 
   /* If the value's sign bit is set, extend the sign.  */
   if (prec != 2 * HOST_BITS_PER_WIDE_INT