Finally, someone with common sense. Thank you. Back to the point, which is my original email. Please kindly ignore everything written after that as irrelevant. However, to avoid any further meaningless arguments, here is a modified version of the example code, which does not change anything with respect to the segmentation fault: #include <lua.h> #include <lualib.h> #include <lauxlib.h> #include <stdio.h> int main() { lua_State *lua = luaL_newstate(); luaL_openlibs(lua); lua_State *lua2 = lua_newthread(lua); luaL_loadstring(lua2, "coroutine.yield()"); int res = lua_resume(lua2, 0); printf("res=%d, top=%d\n", res, lua_gettop(lua2)); lua_pushliteral(lua2, "test"); lua_error(lua2); return 0; } ________________________________ From: William Adams <william_a_adams@xxxxxxx> To: luajit@xxxxxxxxxxxxx Sent: Sunday, December 14, 2014 6:13 AM Subject: RE: [BUG?] Segmentation fault in lua_error() - easily reproducible This argument has devolved into a slapping fight. Can you please move on, or get back to a point where meaningful help can be offered. Sent from my Windows Phone