test-example: Provide a fuzzer for the slip decoder

[secnet.git] / util.h

diff --git a/util.h b/util.h
index 29b68e73d0a906c083b5c116b2a582b960b3c6a7..5866e5784481376e9c2897ecabdb16b5c1f9c818 100644 (file)
--- a/util.h
+++ b/util.h
@@ -31,7 +31,7 @@ extern void *buf_unprepend(struct buffer_if *buf, int32_t amount);
 
 static inline int32_t buf_remaining_space(const struct buffer_if *buf)
 {
-    return (buf->base + buf->alloclen) - buf->start;
+    return (buf->base + buf->alloclen) - (buf->start + buf->size);
 }
 
 extern void buffer_readonly_view(struct buffer_if *n, const void*, int32_t len);