X-Git-Url: https://git.distorted.org.uk/~mdw/secnet/blobdiff_plain/927950400bd569326c3babf4e29038523fa464a6..f665113d3997514ee123a7fd28920c278628a865:/util.h

diff --git a/util.h b/util.h
index c2f10f8..5866e57 100644
--- 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->len) - 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);