1 files changed, 3 insertions, 0 deletions
diff --git a/src/io.h b/src/io.h
index c5c1f56..9f39930 100644
--- a/src/io.h
+++ b/src/io.h
@@ -66,6 +66,9 @@ void stream_read(void *dest, struct stream *s, size_t n);
    by `src`. The stream's cursor is advanced appropriately. */
 void stream_write(struct stream *s, void *src, size_t n);
 
+/* Increases the length of `s` by `n` bytes. */
+void stream_expand(struct stream *s, size_t n);
+
 /* Concatenates the contents of `src` onto `dst`. */
 void stream_concat(struct stream *dst, struct stream *src, size_t n);