On 23/11/2022 04:04, Christoph Anton Mitterer wrote:
Hey. Wasn't busxybox' sh (and that of klibc-utils) based on dash/ash as well?
Yes, it is.
Tried it with them, but there I couldn't reproduce the issue.
With the busybox I have on my own system, I ran reproduce it with:
busybox ash -c 'f() { echo ${PWD-${PWD!}}; }; f'
This segfaults.
If you try it with ${...//...}, busybox added code to implement that, so
it does not hit the "Bad substitution" logic.
Cheers, Harald van Dijk
Thanks, Chris.
