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free implementation
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| void free(void *p) | |
| { | |
| int size; | |
| char *a; | |
| a = (void *)p; | |
| // Cannot free a NULL pointer. | |
| if(p == NULL) | |
| return; | |
| // If checksum is indeed 0. | |
| if (*(a - 4) == 0 && (a - 8) != NULL && (a - 20) != NULL) | |
| { | |
| size = *(a - 8); | |
| *(a- 20) = size + 8; // Size + 8 byte headers available to use again. | |
| } | |
| } |
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