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see issue #715

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Cloud Wu
2017-08-19 10:20:05 +08:00
parent 5e50aeab2b
commit 64a318a9f1
1 changed files with 3 additions and 0 deletions
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3
lualib-src/lua-socket.c
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@@ -257,6 +257,9 @@ static int
lclearbuffer(lua_State *L) { lclearbuffer(lua_State *L) {
struct socket_buffer * sb = lua_touserdata(L, 1); struct socket_buffer * sb = lua_touserdata(L, 1);
if (sb == NULL) { if (sb == NULL) {
if (lua_isnil(L, 1)) {
return 0;
}
return luaL_error(L, "Need buffer object at param 1"); return luaL_error(L, "Need buffer object at param 1");
} }
luaL_checktype(L,2,LUA_TTABLE); luaL_checktype(L,2,LUA_TTABLE);