Function zrealloc_usable

src/zmalloc.cpp:275–279

Reallocate memory or panic. * '*usable' is set to the usable size if non NULL. */

/* Reallocate memory or panic.
 * '*usable' is set to the usable size if non NULL. */
void *zrealloc_usable(void *ptr, size_t size, size_t *usable) {
    ptr = ztryrealloc_usable(ptr, size, usable);
    if (!ptr && size != 0) zmalloc_oom_handler(size);
    return ptr;
}

/* Provide zmalloc_size() for systems where this function is not provided by
 * malloc itself, given that in that case we store a header with this