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Update redbean Lua to check there is enough stack to use

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This commit is contained in:
Paul Kulchenko 2021-08-12 20:58:15 -07:00
parent b420ed8248
commit 6cb8e241f7
1 changed files with 2 additions and 0 deletions
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2
tool/net/redbean.c
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@ -1080,6 +1080,8 @@ static int LuaCallWithTrace(lua_State *L, int nargs, int nres) {
} else {
// move results to the main stack
lua_xmove(co, L, nresults);
// make sure the stack has enough space to grow
luaL_checkstack(L, nres - nresults, NULL);
// grow the stack in case returned fewer results
// than the caller expects, as lua_resume
// doesn't adjust the stack for needed results