X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fbase64.c;h=cbe9a63cf123f869f64105d20aedb0579faa6405;hb=8ea6bf995cf561a525abc8f716e98c8a9b917496;hp=99fcc57c3cc220159cd4d5dc1ba54557e3c625b4;hpb=6829a6c0c428c91768aa4314752ba92b1340e11b;p=gnulib.git

diff --git a/lib/base64.c b/lib/base64.c
index 99fcc57c3..cbe9a63cf 100644
--- a/lib/base64.c
+++ b/lib/base64.c
@@ -19,7 +19,7 @@
  * (mailbox/filter_trans.c, as of 2004-11-28).  Improved by review
  * from Paul Eggert, Bruno Haible, and Stepan Kasal.
  *
- * See also RFC 3548 <http://www.ietf.org/rfc/rfc3548.txt>.
+ * See also RFC 4648 <http://www.ietf.org/rfc/rfc4648.txt>.
  *
  * Be careful with error checking.  Here is how you would typically
  * use these functions:
@@ -552,10 +552,10 @@ base64_decode_alloc_ctx (struct base64_decode_context *ctx,
 {
   /* This may allocate a few bytes too many, depending on input,
      but it's not worth the extra CPU time to compute the exact size.
-     The exact size is 3 * inlen / 4, minus 1 if the input ends
-     with "=" and minus another 1 if the input ends with "==".
+     The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the
+     input ends with "=" and minus another 1 if the input ends with "==".
      Dividing before multiplying avoids the possibility of overflow.  */
-  size_t needlen = 3 * (inlen / 4) + 2;
+  size_t needlen = 3 * (inlen / 4) + 3;
 
   *out = malloc (needlen);
   if (!*out)