- for (i = j = 0; i < length; i += len, j += newlen) {
- eol = memchr(buffer + i, '\n', length - i);
- len = eol ? eol - (buffer + i) + 1 : length - i;
+ /* We may have to add a newline. */
+ strbuf_grow(sb, 1);
+
+ for (i = j = 0; i < sb->len; i += len, j += newlen) {
+ eol = memchr(sb->buf + i, '\n', sb->len - i);
+ len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;