Issue

Only in headless mode (pico8 -x test.p8), and when the mouse devkit is active, trying to access a devkit stat will result in a crash with:

Floating point exception (core dumped)

Minimal working example

script.p8:

pico-8 cartridge // http://www.pico-8.com
version 16
__lua__
function _init()
 -- activate mouse devkit
 poke(0x5f2d, 1)
end

function _update()
 -- get mouse x position
 -- any stat from 32 to 36 will crash
 stat(32)
end

Then run with pico8 -x script.p8

Note that I put stat() in _update because I need at least 1 frame after activating the devkit so the crash occurs. If you print inside _update you'll see that stat(32) is 0 the first time, then it crashes.

Workaround

When testing functionality in headless mode, prepare a build that doesn't use the devkit at all. Or make sure that in runtime, the devkit is never used.