_alloc_safe_mem
if ((out = _alloc_safe_mem(sz, file, line)) == NULL) {
void *_alloc_safe_mem(size_t req_sz, const char *file, int line);
_alloc_safe_mem(x, __FILE__, __LINE__)
void *_alloc_safe_mem(size_t req_sz, const char *file, int line);
_alloc_safe_mem(x, __FILE__, __LINE__)
void *_alloc_safe_mem(size_t req_sz, const char *file, int line);
_alloc_safe_mem(x, __FILE__, __LINE__)