libmudflap/testsuite/libmudflap.c/pass26-frag.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 int main ()
   5 {
   6 volatile int *p;
   7
   8 __mf_set_options ("-wipe-stack -no-check-initialization");
   9
  10 {
  11   volatile int array [10];
  12   p = & array[0];
  13
  14   array[0] = 2;
  15   array[9] = 5;
  16
  17   /* Array[] should be wiped clean at this point.  */
  18 }
  19
  20 __mf_set_options ("-no-wipe-stack");
  21
  22 {
  23   volatile int array2[10];
  24
  25  /* hope that this is allocated on top of old array[] */
  26   if (p != & array2[0])
  27     exit (0);  /* Test is not applicable. */
  28
  29   array2[5] = 6;
  30
  31   /* Old values shouldn't still be around; the new one should.  */
  32   if (p[0] == 2 || p[9] == 5 || p[5] != 6)
  33     abort() ;
  34
  35   /* array2[] should not be wiped at this point! */
  36 }
  37
  38 {
  39   volatile int array3[10];
  40
  41  /* hope that this is allocated on top of old array[] and array2[]*/
  42   if (p != & array3[0])
  43     exit (0);  /* Test is not applicable. */
  44
  45   array3[1] = 2;
  46
  47   /* Check that old assignment is still around.  */
  48   if (p[5] != 6 || p[1] != 2)
  49     abort() ;
  50 }
  51 return 0;
  52 }