Function luaG_errormsg

third-party/lua-5.4.6/src/ldebug.c:835–845

l_noret luaG_errormsg (lua_State *L) {
  if (L->errfunc != 0) {  /* is there an error handling function? */
    StkId errfunc = restorestack(L, L->errfunc);
    lua_assert(ttisfunction(s2v(errfunc)));
    setobjs2s(L, L->top.p, L->top.p - 1);  /* move argument */
    setobjs2s(L, L->top.p - 1, errfunc);  /* push function */
    L->top.p++;  /* assume EXTRA_STACK */
    luaD_callnoyield(L, L->top.p - 2, 1);  /* call it */
  }
  luaD_throw(L, LUA_ERRRUN);
}


l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {