I have notices that funsubs can be used to unload loadable builtins
while they are being run e.g.
bash-5.3$ enable -f {examples/loadables/,}mktemp
bash-5.3$ declare -n foo='q[${| enable -d mktemp;}0]'
bash-5.3$ mktemp -v foo
/tmp/shtmp.jKcUE0
Segmentation fault (core dumped)
T
If a funsub declares a local OPTIND, the calling context's getopts state
gets messed up.
For example, the following loop will not terminate:
OPTIND=1; while getopts ab opt -ab; do
echo $opt ${ local OPTIND; }
done
From f7f16f70cf0ef623541ff3b6a36cff10b4933914 Mon Sep 17 00:00:00 2
Calling `return' after a funsub outside of a function or `.' context
doesn't behave correctly:
$ bash -c '${ :; }; (return 2); echo $?'
2
$ bash -c '${ :; }; return'
Segmentation fault
From cd67d9defa0dbb7be36c1df163db33e78cac8f27 Mon Sep 17 00:00:00 2001
From: Grisha Levit
Date: Tue, 28 Nov 202
