42   size_t capacity;  member
71   if (static_cast<size_t>(n) + space_for_null > ck->capacity - ck->offset) {  in fmemopen_write()
72     n = ck->capacity - ck->offset - space_for_null;  in fmemopen_write()
95   if (whence == SEEK_SET && (offset >= 0 && static_cast<size_t>(offset) <= ck->capacity)) {  in fmemopen_seek()
97   } else if (whence == SEEK_CUR && (ck->offset + offset <= ck->capacity)) {  in fmemopen_seek()
113 FILE* fmemopen(void* buf, size_t capacity, const char* mode) {  in fmemopen()  argument
124   ck->capacity = capacity;  in fmemopen()
126   if (ck->buf == nullptr) ck->buf = ck->allocation = static_cast<char*>(calloc(capacity, 1));  in fmemopen()
143     ck->size = strnlen(ck->buf, ck->capacity);  in fmemopen()
147     ck->size = capacity;  in fmemopen()
152     if (capacity > 0) {  in fmemopen()