Re: Bug with traps and exit

[Martijn Dekker <martijn@inlv.org>]

Op 22-01-19 om 00:00 schreef Martijn Dekker:
> Found a strange issue with traps and 'exit'.
> 
> Test script:
> 
> trap 'printf $1; exit; printf $2' USR1
> fn() {
>          printf 1
>          kill -s usr1 $$
>          printf 2
> }
> printf 0
> fn A B
> printf 3
> 
> Every shell outputs 01A, except zsh, which outputs 01A2.
> 
> This means the execution of the fn() function is not interrupted. The
> USR1 trap executes 'exit' and does not execute the rest of the trap
> action, but instead of exiting the shell, zsh continues to execute fn()
> and then exits.
> 
> Confirmed down to zsh 5.0.8 (didn't test earlier versions).

A related issue (possibly the same?) with a much simpler test case:

trap 'echo SIGINT; trap - INT; kill -s INT $$; echo woops' INT
kill -s INT $$

zsh prints 'woops', but shouldn't.

- M.

-- 
modernish -- harness the shell
https://github.com/modernish/modernish