When re-initializing the TTF addon after al_shutdown_allegro, it will not be properly initialized unless a call to al_uninstall_ttf_addon is provided after al_shutdown_allegro.
Here's a minimal program with two commented lines of code that will show the different results:
#SelectExpand
1#include <allegro5/allegro.h>
2
3#include <allegro5/allegro_font.h>
4#include <allegro5/allegro_ttf.h>
5#include <string>
6#include <iostream>
7
8int main
(int argc,
char **argv
)
9{
10 std::string full_font_path
= "/Users/markoates/Repos/allegro_flare/bin/data/fonts/DroidSans.ttf";
11
12 // ----
13
14 al_init();
15 al_init_font_addon();
16 al_init_ttf_addon();
17
18 ALLEGRO_FONT *font = al_load_font(full_font_path.c_str
(),
20,
0);
19
20 int first_load_width
= al_get_text_width(font,
"W");
21
22 //al_shutdown_ttf_addon(); // <-- this results in a segfault
23 al_uninstall_system();
24 //al_shutdown_ttf_addon(); // <-- this is required for al_init_ttf_addon() to be re-initialized below, otherwise
25 // the subsequent al_get_text_width will return 0
26
27 // ----
28
29 al_init();
30 al_init_font_addon();
31 al_init_ttf_addon();
32
33 ALLEGRO_FONT *second_font
= al_load_font(full_font_path.c_str
(),
20,
0);
34
35 int second_load_width
= al_get_text_width(second_font,
"W");
36
37 al_uninstall_system();
38
39 // ----
40
41 if (first_load_width
== second_load_width
)
42 std::cout
<< "PASS (" << first_load_width
<< " != " << second_load_width
<< ")" << std::endl
;
43 else
44 std::cout
<< "FAIL (" << first_load_width
<< " != " << second_load_width
<< ")" << std::endl
;
45
46 return 0;
47}
Didn't have time to go into causes, but it appeared as a flakey test during several test runs.
So question is, should al_shutdown_allegro also shutdown and uninstall all the addons? That's my expectation. If it's not, which ones would I need to shutdown in order to ensure a clean slate?
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