Mercurial > hg > CbC > CbC_gcc

diff gcc/fold-const.c @ 47:3bfb6c00c1e0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
update it from 4.4.2 to 4.4.3.
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Sun, 07 Feb 2010 17:44:34 +0900
parents 58ad6c70ea60
children 77e2b8dfacca
line wrap: on
line diff
--- a/gcc/fold-const.c	Sun Feb 07 17:43:48 2010 +0900
+++ b/gcc/fold-const.c	Sun Feb 07 17:44:34 2010 +0900
@@ -328,13 +328,17 @@
   HOST_WIDE_INT h;
 
   l = l1 + l2;
-  h = h1 + h2 + (l < l1);
+  h = (HOST_WIDE_INT) ((unsigned HOST_WIDE_INT) h1
+		       + (unsigned HOST_WIDE_INT) h2
+		       + (l < l1));
 
   *lv = l;
   *hv = h;
 
   if (unsigned_p)
-    return (unsigned HOST_WIDE_INT) h < (unsigned HOST_WIDE_INT) h1;
+    return ((unsigned HOST_WIDE_INT) h < (unsigned HOST_WIDE_INT) h1
+	    || (h == h1
+		&& l < l1));
   else
     return OVERFLOW_SUM_SIGN (h1, h2, h);
 }