1 files changed, 6 insertions, 3 deletions

diff --git a/C/7zBuf2.c b/C/7zBuf2.c
index e14e65f4..430f76bf 100644
--- a/C/7zBuf2.c
+++ b/C/7zBuf2.c
@@ -1,5 +1,5 @@
 /* 7zBuf2.c -- Byte Buffer
-2013-11-12 : Igor Pavlov : Public domain */
+2014-08-22 : Igor Pavlov : Public domain */
 
 #include "Precomp.h"
 
@@ -34,8 +34,11 @@ int DynBuf_Write(CDynBuf *p, const Byte *buf, size_t size, ISzAlloc *alloc)
     alloc->Free(alloc, p->data);
     p->data = data;
   }
-  memcpy(p->data + p->pos, buf, size);
-  p->pos += size;
+  if (size != 0)
+  {
+    memcpy(p->data + p->pos, buf, size);
+    p->pos += size;
+  }
   return 1;
 }