From 24867fa77c867a444670cf484d32188ae0808777 Mon Sep 17 00:00:00 2001
From: Ralph Corderoy <ralph@inputplus.co.uk>
Date: Fri, 28 Apr 2017 22:42:46 +0100
Subject: [PATCH] bvector_copy: Use bvector's tiny storage if big enough.

Otherwise a source bvector that's using tiny storage has its bits
duplicated into a malloc'd area when the destination's tiny storage was
sufficient.
---
 sbr/vector.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sbr/vector.c b/sbr/vector.c
index 7df36187..6afe62aa 100644
--- a/sbr/vector.c
+++ b/sbr/vector.c
@@ -79,7 +79,10 @@ bvector_copy (bvector_t dest, bvector_t src) {
 
     if (dest->bits != dest->tiny)
         free(dest->bits);
-    dest->bits = mh_xmalloc (bytes);
+    if (bytes <= sizeof dest->tiny)
+        dest->bits = dest->tiny;
+    else
+        dest->bits = mh_xmalloc (bytes);
     memcpy (dest->bits, src->bits, bytes);
     dest->maxsize = src->maxsize;
 }
-- 
2.56.0