gcc/testsuite/gcc.target/i386/mpx/union-arg-1-ubv.c

   1 /* { dg-do run } */
   2 /* { dg-shouldfail "bounds violation" } */
   3 /* { dg-options "-fcheck-pointer-bounds -mmpx" } */
   4
   5
   6 #define SHOULDFAIL
   7
   8 #include "mpx-check.h"
   9
  10 struct s1
  11 {
  12   union {
  13     int i1;
  14     int i3;
  15   } v;
  16   int i2;
  17   union {
  18     int *p;
  19     int p2;
  20   } u;
  21 } s1;
  22
  23 int rd (struct s1 s)
  24 {
  25   int res = s.u.p[s.v.i1 + s.i2];
  26   printf ("%d\n", res);
  27   return res;
  28 }
  29
  30 int buf[100];
  31 int buf1[10];
  32
  33 int mpx_test (int argc, const char **argv)
  34 {
  35   struct s1 s;
  36   s.u.p = buf;
  37   s.v.i1 = 50;
  38   s.i2 = 50;
  39
  40   rd (s);
  41
  42   return 0;
  43 }