IOT instruction (core dumped)

[flipphillips]

Description

After measurements, as calculations are finishing, core dumps.

Details / to recreate

Linux (Rocky9) i1Display

Do default measure and profile.

Expected

Success

Actual

After measurements, as it's trying to generate the matrix it dumps core when computing the black point compensation.

vis-

...
#30 Z prev 0.715490 next 0.769132 clip 
#31 Z prev 0.769132 next 0.824900 clip 
Final interpolated cLUT resolution 33x33x33
--------------------------------------------------------------------------------
Creating matrix from primaries
Using chromatic adaptation transform matrix: Bradford
Generating A2B1 by copying A2B0
Making distinct A2B0
Applying black point compensation to A2B0: L*a*b* 0.000000 0.000000 0.000000
zsh: IOT instruction (core dumped)  displaycal

Regression

Could be an argyll problem, of course. Presently looking through the calls that displaycal is making / temp data.