Floating point exception when running doom retro about doomretro HOT 8 OPEN

Thanks for the report. I'm not familiar with Linux in any meaningful way, so I generally can't offer support, but I suspect the bug I just fixed (d7206d4) is the cause of this. Can you please try to compile again and confirm?

from doomretro.

It still gives me the same error unfortunately.

from doomretro.

Could you please provide a call stack. To do this, you will need to build the program in debug mode and run it under the debugger. You do not need to install the program. I note that you will also need a gdb debugger (in most linux distros, the package is called gdb).

1. Cloning git repo: git clone https://github.com/bradharding/doomretro;
2. Enter doomretro dir: cd doomretro;
3. Compile with debug info: cmake -B build_debug -S . -DCMAKE_BUILD_TYPE=Debug; cmake --build build_debug -- -j4;
   Now executable file can be found here: build_debug/doomretro;
4. Run with debugger: gdb -- build_debug/doomretro ARGS where ARGS is doomretro arguments, for example, -iwad DOOM.WAD;
5. Type run or r command in gdb to run program;
6. When a problem occurs, type backtrace or bt command in gdb to display the call stack.

from doomretro.

Sorry that I'm late. Here's the output I got from your instruction. I had to use gdb --args build_debug/doomretro ARGS

(gdb) run
Starting program: /home/salahou/doomretro/build_debug/doomretro -iwad DOOM.WAD
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff63fd640 (LWP 18364)]
[Thread 0x7ffff63fd640 (LWP 18364) exited]

Thread 1 "doomretro" received signal SIGFPE, Arithmetic exception.
0x00005555555f4f9f in I_GetScreenDimensions () at /home/salahou/doomretro/src/i_video.c:1679
1679	        WIDESCREENWIDTH = BETWEEN(NONWIDEWIDTH, ((width * ACTUALHEIGHT / height + 1) & ~3), MAXWIDTH);
(gdb) bt
#0  0x00005555555f4f9f in I_GetScreenDimensions ()
    at /home/salahou/doomretro/src/i_video.c:1679
#1  0x00005555555f5793 in I_InitGraphics ()
    at /home/salahou/doomretro/src/i_video.c:1846
#2  0x00005555555dc71f in D_DoomMainSetup ()
    at /home/salahou/doomretro/src/d_main.c:2336
#3  0x00005555555ddb81 in D_DoomMain ()
    at /home/salahou/doomretro/src/d_main.c:2678
#4  0x00005555555ddc32 in main (argc=3, argv=0x7fffffffe078)
    at /home/salahou/doomretro/src/doomretro.c:215

from doomretro.

Ah! Thank you for this. So, height is 0 in this instance, causing a divide by zero error. I'll look into it.

from doomretro.

Can you please tell me what the SDL_VIDEODRIVER environment variable is set to on your system?

from doomretro.

So if I try printenv SDL_VIDEODRIVER it gives me nothing. The default should be x11?

from doomretro.

It seems that a previous call to an SDL function that it meant to find your display's width and height in pixels failed, leaving height to be 0 causing the crash. After a bit of googling, it could be due to SDL_VIDEODRIVER being set incorrectly. x11 is the default. Does changing that work?

from doomretro.

Sorry for the very late reply. Finally, I give up. And anyway, I won't have access to my computer for a while.
As you said I'm pretty sure the problem is SDL_VIDEODRIVER but I don't know how to change it. I'll switch to Arch, so it doesn't matter.
I still love doomretro :)

from doomretro.