memcheck/tests/realloc2.c

   1 /* This test demonstrated an obscure bug in malloclists handling caused by
   2    multiple blocks hashing to the same list and one being overwritten at
   3    realloc time due to bad ordering of the things happening.  Now runs
   4    without error. */
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8
   9 int main ( void )
  10 {
  11   char* p;
  12   int i;
  13   for (i = 0; i < 10000; i++) {
  14     p = malloc(10 + 10 * (i % 100));
  15     p = realloc(p, 500);
  16     p = realloc(p, 600);
  17     free(p);
  18   }
  19   return 0;
  20 }
  21