When a program aborts it will print an error message on stderr. It would be useful to have that message.

Long since disappeared for this case, I'm afraid. I'll try and get it in the future.

Can you please update to RE24, the 2.4.16 candidate, and see if the behavior has changed? Also, can you please be sure to compile without optimization (or with frame pointers intact; gcc -fno-omit-frame-pointer); there seem to be a few functions missing in these stack traces.

Also grab the latest overlays/pcache.c (1.168). It probably won't fix things, but it should make the crashes a little more obvious.

OK, I've built 2.4.16 (which I see has the new pcache.c) with no optimisation (-O0 and -fno-omit-frame-pointer) and will put in place in our test lab.

Cheers Toby