commit 70dd2ed3e69d5d18091185cc6840182882ea90b2

Author: Evgenii Terechkov <evg@altlinux.org>

Date:   Sat Sep 6 23:22:19 2014 +0800

    Patch http://www.lua.org/bugs.html#5.1.5-2

diff --git a/src/lzio.c b/src/lzio.c

index 293edd5..48a76ce 100644

--- a/src/lzio.c

+++ b/src/lzio.c

@@ -22,10 +22,14 @@ int luaZ_fill (ZIO *z) {

   size_t size;

   lua_State *L = z->L;

   const char *buff;

+  if (z->eoz) return EOZ;

   lua_unlock(L);

   buff = z->reader(L, z->data, &size);

   lua_lock(L);

-  if (buff == NULL || size == 0) return EOZ;

+  if (buff == NULL || size == 0) {

+    z->eoz = 1;  /* avoid calling reader function next time */

+    return EOZ;

+  }

   z->n = size - 1;

   z->p = buff;

   return char2int(*(z->p++));

@@ -51,6 +55,7 @@ void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {

   z->data = data;

   z->n = 0;

   z->p = NULL;

+  z->eoz = 0;

 }

diff --git a/src/lzio.h b/src/lzio.h

index 51d695d..e98ce75 100644

--- a/src/lzio.h

+++ b/src/lzio.h

@@ -59,6 +59,7 @@ struct Zio {

   lua_Reader reader;

   void* data;			/* additional data */

   lua_State *L;			/* Lua state (for reader) */

+  int eoz;			/* true if reader has no more data */

 };