memcheck/tests/noisy_child.c

   1
   2 #include <stdlib.h>
   3 #include <sys/types.h>
   4 #include <unistd.h>
   5 #include <assert.h>
   6
   7 void do_child_badness ( char* p )
   8 {
   9    /* Free it a second time */
  10    free(p);
  11 }
  12
  13 void do_parent_badness ( char* p )
  14 {
  15    /* Do a write off the end */
  16    p[10] = 42;
  17 }
  18
  19
  20 int main ( void )
  21 {
  22   pid_t child;
  23   char* p = malloc(10); assert(p);
  24   free(p);
  25
  26   /* parent does something bad */
  27   p[5] = 22;
  28
  29   child = fork();
  30   assert(child != -1); /* assert fork did not fail */
  31
  32   if (child == 0) {
  33      /* I am the child */
  34      do_child_badness(p);
  35   } else {
  36      /* I am the parent */
  37      do_parent_badness(p);
  38   }
  39
  40   return 0;
  41
  42 }