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setmetatable raise error

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This commit is contained in:
Cloud Wu
2019-04-18 19:17:49 +08:00
committed by 云风
parent 3a0981661c
commit e3c5d63a97
1 changed files with 4 additions and 4 deletions
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8
3rd/lua/lapi.c
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@@ -858,6 +858,8 @@ LUA_API int lua_setmetatable (lua_State *L, int objindex) {
} }
switch (ttnov(obj)) { switch (ttnov(obj)) {
case LUA_TTABLE: { case LUA_TTABLE: {
if (isshared(hvalue(obj)))
luaG_runerror(L, "can't setmetatable to shared table");
hvalue(obj)->metatable = mt; hvalue(obj)->metatable = mt;
if (mt) { if (mt) {
luaC_objbarrier(L, gcvalue(obj), mt); luaC_objbarrier(L, gcvalue(obj), mt);
@@ -1041,10 +1043,8 @@ LUA_API void lua_clonefunction (lua_State *L, const void * fp) {
} }
LUA_API void lua_sharefunction (lua_State *L, int index) { LUA_API void lua_sharefunction (lua_State *L, int index) {
if (!lua_isfunction(L,index) || lua_iscfunction(L,index)) { if (!lua_isfunction(L,index) || lua_iscfunction(L,index))
lua_pushstring(L, "Only Lua function can share"); luaG_runerror(L, "Only Lua function can share");
lua_error(L);
}
LClosure *f = cast(LClosure *, lua_topointer(L, index)); LClosure *f = cast(LClosure *, lua_topointer(L, index));
luaF_shareproto(f->p); luaF_shareproto(f->p);
} }