X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb-python/blobdiff_plain/0040152918b6695e73807fd479024db8a27a83fb..a0580db01b4aaaa99516df243caa85153de65a4e:/buffer.c

diff --git a/buffer.c b/buffer.c
index 59a85bf..9b6e0ff 100644
--- a/buffer.c
+++ b/buffer.c
@@ -340,7 +340,7 @@ static void ensure(PyObject *me, size_t n)
   if (BLEFT(b) < n) {
     size_t nn = BSZ(b);
     octet *p;
-    size_t want = BLEFT(b) + n;
+    size_t want = BLEN(b) + n;
     while (nn < want) nn <<= 1;
     p = xrealloc(BBASE(b), nn, BSZ(b));
     BCUR(b) = p + BLEN(b);