Honorable GNU developers ! For some reason the new Emacs 29.0.90 did not build at work the other day unless I provided configuration option --without-all (I plan to look into why later but that is not why I am writing this report now). When I experimented with Emacs (29.0.90 --without-all) I noticed a crash defect that was easy to reproduce. It seemed to have with fonts to do. I have noticed the same problem both at work CentOS 7.9 and at home (currently on a raspberry pi 4) not that it matters but anyhow several machines / architectures. The problem seemed non-present when I built Emacs without configuration option --without-all I attach details about my findings in an org file, hope it helps Live long and prosper