Segmentation fault

[FrenzyExists]

Problem

Specs

Description

Attempted to both run the already compiled binary and also compile my own. Used the Fedora 36 instructions since 40 would not apply (and when i tested out of curiosity it did not worked).

Other

Can't uninstall it either

[kassoulet]

I have the same on Fedora 40.

Thread 1 "tic80" received signal SIGSEGV, Segmentation fault.
0x0000000000462fbe in isDevMode (studio=0xa551f0) at /home/gautier/src/TIC-80/src/studio/studio.c:1751
1751	    const char *devmode = tic_tool_metatag(tic->cart.code.data, "devmode", tic_get_script(tic)->singleComment);
(gdb) bt
#0  0x0000000000462fbe in isDevMode (studio=0xa551f0) at /home/gautier/src/TIC-80/src/studio/studio.c:1751
#1  0x0000000000463582 in processShortcuts (studio=0xa551f0) at /home/gautier/src/TIC-80/src/studio/studio.c:1863
#2  0x0000000000463bfa in renderStudio (studio=0xa551f0) at /home/gautier/src/TIC-80/src/studio/studio.c:2028
#3  0x00000000004646c3 in studio_tick (studio=0xa551f0, input=...) at /home/gautier/src/TIC-80/src/studio/studio.c:2259
#4  0x000000000045bdf2 in gpuTick () at /home/gautier/src/TIC-80/src/system/sdl/main.c:1716
#5  0x000000000045c4d5 in start (argc=1, argv=0x7fffffffdc48, folder=0x958000 <appFolder.4> "/home/gautier/.local/share/com.nesbox.tic/TIC-80/") at /home/gautier/src/TIC-80/src/system/sdl/main.c:1934
#6  0x000000000045c5e2 in main (argc=1, argv=0x7fffffffdc48) at /home/gautier/src/TIC-80/src/system/sdl/main.c:2081

[Skeptim]

Which version of TIC-80 is it? That seems related to DevMode, do you have the same issue before and after this PR: https://github.com/nesbox/TIC-80/pull/2581 ?

[kassoulet]

Yep, I confirm tic80 starts normally using commit d8c554fa407759eaac67bee0cceb4dd5a877ca66

[andreyorst]

still happens to me on current main (921d5e6e42fdb4bf16963f5e474594e0ed539457) when loading a cart, for example, the config cart.

[nesbox]

@andreyorst can't reproduce it, could you pls test CI binaries https://nightly.link/nesbox/TIC-80/workflows/build/main? Thank you.

[andreyorst]

tried out the nightly build and the crash didn't happen. However, I tried rebuilding the current master, tested it after build in the build/bin without problems, then did make install to a local directory, and got the crash again.

So perhaps the language shared libraries are unavailable after make install?

The complete steps are:

1. build, install

   cmake -DCMAKE_INSTALL_PREFIX=~/.local/ -DSDL_ALSA=On ..
   make install -j8
   

2. run from the system menu
3. load config
4. run
5. crash

[SolarLune]

Hello, I've run into a similar problem as well on EndeavourOS (Arch Linux) with a freshly-built installation of TIC-80 from Github.

I found that I get a segfault if I start TIC-80 from a location that is not where its executable and supporting libraries are found (either from a custom menu entry command or from the terminal, like ~/Applications/Tic80/build/bin/tic80), when I attempt to run a cart. I'm guessing this is because it doesn't find lua.so, python.so, ruby.so, etc. for whatever language the cart uses in the current working directory.

A workaround for this is to spawn a sub-process with the correct working directory. This can be done as follows:

(cd ~/Applications/Tic80/build/bin/; ./tic80)

You could also only start it from the build directory from terminal.

Maybe it's worth noting this in the build+install instructions?