openwrt/toolchain/gcc/3.4.4/910-enable_wrapv.patch

   1 --- gcc.old/gcc/toplev.c        2005-03-09 01:50:25.000000000 +0100
   2 +++ gcc.dev/gcc/toplev.c        2007-01-30 12:25:29.644130224 +0100
   3 @@ -991,7 +991,7 @@
   4  int flag_trapv = 0;
   5
   6  /* Nonzero if signed arithmetic overflow should wrap around.  */
   7 -int flag_wrapv = 0;
   8 +int flag_wrapv = 1;
   9
  10  /* Nonzero if subexpressions must be evaluated from left-to-right.  */
  11  int flag_evaluation_order = 0;