knudel
Hi,
Maybe this question is a bit dumb but in this example the timer works after al_destroy_timer() completely correct. I thougt it should return an error or something else but it is no problem to use a timer after it is destroyed.
1#include <allegro5/allegro.h>
2#include <iostream>
3
4using namespace std;
5
6int main(){
7 al_init();
8 ALLEGRO_TIMER *timer = al_create_timer(1); //create the timer
9 al_destroy_timer(timer); //and destroy it
10
11 ALLEGRO_EVENT_QUEUE *qu = al_create_event_queue();
12 al_register_event_source(qu,al_get_timer_event_source(timer));
13
14 al_start_timer(timer);
15 while(true){
16 ALLEGRO_EVENT ev;
17 al_wait_for_event(qu, &ev);
18 cout << al_get_timer_count(timer) << endl; //the timer works correct
19 }
20}
Is this a bug or am i an idiot? 
thanks for all answers
Matthew Leverton
It's a bug in your code, yes. See the Allegro source:
/* Function: al_destroy_timer */ void al_destroy_timer(ALLEGRO_TIMER *timer) { if (timer) { al_stop_timer(timer); _al_unregister_destructor(_al_dtor_list, timer); _al_event_source_free(&timer->es); al_free(timer); } }
You are just using memory that you no longer own. It may "work," but it could explode at any moment.
Thomas Fjellstrom
You'll have problems later when something else starts using the memory that timer previously used. You should never use objects after they have been freed.
knudel
ahh, ok 
thank you very much for the answers