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- /*
- * Listing 2 -- Error by writing a freed pointer
- * (item's value may have changed)
- */
-
- #include <stdlib.h>
- #include <assert.h>
-
- void main() {
- int *ip;
-
- /* allocate an integer */
- ip = malloc(sizeof(int));
- assert(ip != NULL);
-
- /* initialize the integer */
- (*ip) = 1;
-
- /* deallocate the integer */
- free(ip);
-
- /* update the deallocated integer */
- (*ip)++;
- printf("*ip == %d\n",*ip);
- }
-