memcheck/tests/malloc3.c

   1
   2 /* test of plausible behaviour with malloc and stupid args */
   3
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6
   7 int main ( void )
   8 {
   9   char* p;
  10
  11   p = malloc(0);
  12   printf("malloc(0) = 0x%lx\n", (unsigned long)p);
  13   free(p);
  14
  15   p = malloc(-1);
  16   printf("malloc(-1) = 0x%lx\n", (unsigned long)p);
  17   free(p);
  18
  19   p = calloc(0,1);
  20   printf("calloc(0,1) = 0x%lx\n", (unsigned long)p);
  21   free(p);
  22
  23   p = calloc(0,-1);
  24   printf("calloc(0,-1) = 0x%lx\n", (unsigned long)p);
  25   free(p);
  26
  27   // We no longer get a warning with this due to the calloc overflow checking
  28   // done for bug 149878.  It's no great loss, it's extremely unlikely to
  29   // occur in practice.
  30   p = calloc(-1,-1);
  31   printf("calloc(-1,-1) = 0x%lx\n", (unsigned long)p);
  32   free(p);
  33
  34   return 0;
  35 }