From: Nick Mathewson <nickm@torproject.org>
Date: Mon, 23 Apr 2007 22:20:45 +0000 (+0000)
Subject:  r12782@Kushana:  nickm | 2007-04-23 18:20:19 -0400
X-Git-Tag: tor-0.2.0.1-alpha~242
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3831d77dba07fdac0fe6c689fcfbada12c772ad8;p=thirdparty%2Ftor.git

 r12782@Kushana:  nickm | 2007-04-23 18:20:19 -0400
 Avoid a segfault when freeing a buffer with size 0.


svn:r10010
---

diff --git a/src/or/buffers.c b/src/or/buffers.c
index cf5b0bb0e9..1d80f88ea4 100644
--- a/src/or/buffers.c
+++ b/src/or/buffers.c
@@ -469,7 +469,7 @@ buf_free(buf_t *buf)
   buf->magic = 0xDEADBEEF;
   if (buf->len == MIN_LAZY_SHRINK_SIZE) {
     add_buf_mem_to_freelist(buf);
-  } else {
+  } else if (buf->mem) {
     oldmem = RAW_MEM(buf->mem);
     tor_free(oldmem);
   }