lua_getglobal triggered "attempt to index a thread value" error

Question

I have completely no idea on how it could raise this error: even if the global does not exist, isn't it should give a nil?

Nevertheless, something I could ensure are:

it is a valid lua_State;
it is the main context, not a thread;
the named global has been set previously, on the same lua_State instance.
I never unset the global (as I don't know how to do that).

And this is the stack trace when error is raised:

    ZTD3UI.exe!luaD_throw(lua_State * L, int errcode) line 135  C++
    ZTD3UI.exe!luaG_errormsg(lua_State * L) line 775    C++
    ZTD3UI.exe!luaG_runerror(lua_State * L, const char * fmt, ...) line 789 C++
    ZTD3UI.exe!luaG_typeerror(lua_State * L, const TValue * o, const char * op) line 695    C++
    ZTD3UI.exe!luaV_finishget(lua_State * L, const TValue * t, TValue * key, StackValue * val, const TValue * slot) line 298    C++
    ZTD3UI.exe!auxgetstr(lua_State * L, const TValue * t, const char * k) line 646  C++
    ZTD3UI.exe!lua_getglobal(lua_State * L, const char * name) line 665 C++

@EgorSkriptunoff The whole thing is too long. If the error message is not enough, I'll try to create a minimum scene. — jiandingzhe, Jun 25 '21 at 01:34
You can try to run your program in a Lua built with `LUA_USE_APICHECK` — Egor Skriptunoff, Jun 25 '21 at 04:15
@EgorSkriptunoff I added this macro, it reports the actual error which is a Lua stack overflow and I fixed it. Thanks for a lot! — jiandingzhe, Jun 25 '21 at 06:46

lua_getglobal triggered "attempt to index a thread value" error

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