libmudflap/testsuite/libmudflap.c/fail33-frag.c

   1 #include <stdlib.h>
   2
   3 #define SIZE 16
   4
   5 char b[SIZE];
   6 char a[SIZE];
   7
   8 int main ()
   9 {
  10   int i, j=0, k;
  11   int a_before_b = (& a[0] < & b[0]);
  12   /* Rather than iterating linearly, which would allow loop unrolling
  13      and mapping to pointer manipulation, we traverse the "joined"
  14      arrays in some random order.  */
  15   for (i=0; i<SIZE*2; i++)
  16     {
  17       k = rand() % (SIZE*2);
  18       j += (a_before_b ? a[k] : b[k]);
  19     }
  20   return j;
  21 }
  22 /* { dg-output "mudflap violation 1.*" } */
  23 /* { dg-output "Nearby object.*" } */
  24 /* { dg-output "mudflap object.*\[ab\]" } */
  25 /* { dg-do run { xfail *-*-* } } */