Function luaE_checkcstack

3rd/lua-5.4.3/src/lstate.c:165–170

** Called when 'getCcalls(L)' larger or equal to LUAI_MAXCCALLS. ** If equal, raises an overflow error. If value is larger than ** LUAI_MAXCCALLS (which means it is handling an overflow) but ** not much larger, does not report an error (to allow overflow ** handling to work). */

** handling to work).
*/
void luaE_checkcstack (lua_State *L) {
  if (getCcalls(L) == LUAI_MAXCCALLS)
    luaG_runerror(L, "C stack overflow");
  else if (getCcalls(L) >= (LUAI_MAXCCALLS / 10 * 11))
    luaD_throw(L, LUA_ERRERR);  /* error while handing stack error */
}


LUAI_FUNC void luaE_incCstack (lua_State *L) {