Function pusherror

3rd/lua-5.4.3/src/loadlib.c:194–202

static void pusherror (lua_State *L) {
  int error = GetLastError();
  char buffer[128];
  if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
      NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL))
    lua_pushstring(L, buffer);
  else
    lua_pushfstring(L, "system error %d\n", error);
}

static void lsys_unloadlib (void *lib) {
  FreeLibrary((HMODULE)lib);