From 7a82ae32695adc63d33597cf49e950a4195b8fd6 Mon Sep 17 00:00:00 2001
From: "Steffen (Daode) Nurpmeso" <steffen@sdaoden.eu>
Date: Wed, 8 Feb 2017 21:41:51 +0100
Subject: [PATCH] b64_decode_part(): fix possible assertion (size must be GT
 len!)

---
 mime_enc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/mime_enc.c b/mime_enc.c
index b4cb10af..0c4a3809 100644
--- a/mime_enc.c
+++ b/mime_enc.c
@@ -978,7 +978,14 @@ b64_decode_part(struct str *out, struct str const *in, struct str *outrest,
    NYD_ENTER;
 
    n_string_creat(&s);
-   n_string_take_ownership(&s, out->s, out->l, out->l);
+   if((len = out->l) > 0 && out->s[len] == '\0')
+      n_string_take_ownership(&s, out->s, len +1, len);
+   else{
+      if(len > 0)
+         n_string_push_buf(&s, out->s, len);
+      if(out->s != NULL)
+         free(out->s);
+   }
    out->s = NULL, out->l = 0;
    n_string_creat(&workbuf);
 
-- 
2.11.4.GIT