extern void
xml_set_memory_allocator(void *(*malloc_func)(size_t),
void (*free_func)(void *),
void *(*realloc_func)(void *, size_t));
extern void
xml_set_memory_allocator(void *(*malloc_func)(size_t),
void (*free_func)(void *),
void *(*realloc_func)(void *, size_t));