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-rw-r--r--plugins/MirLua/src/m_core.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/plugins/MirLua/src/m_core.cpp b/plugins/MirLua/src/m_core.cpp
index 07c409a710..bf3b5233cf 100644
--- a/plugins/MirLua/src/m_core.cpp
+++ b/plugins/MirLua/src/m_core.cpp
@@ -342,6 +342,8 @@ void __cdecl ThreadFunc(void *p)
static int core_ForkThread(lua_State *L)
{
+ luaL_checktype(L, 1, LUA_TFUNCTION);
+
core_ForkThreadParam *p = new core_ForkThreadParam();
p->L = lua_newthread(L);