ext/kgio/write.c in kgio-2.9.2 vs ext/kgio/write.c in kgio-2.9.3

@@ -43,10 +43,10 @@
 				if (a->len <= 0)
 					goto done;
 				a->ptr = RSTRING_PTR(a->buf) + written;
 				return -1;
 			} else if (written > 0) {
-				a->buf = rb_str_subseq(a->buf, written, a->len);
+				a->buf = MY_STR_SUBSEQ(a->buf, written, a->len);
 			} else {
 				a->buf = sym_wait_writable;
 			}
 			return 0;
 		}