On 17-11-16 16:43, Pavel A wrote:
> Dear experts,
>
> We have a strange problem with ash script: the shell silently exits while
> executing a script. It is likely caused by a "let" command.
> Anyone seen similar behavior? How to debug it?
>
> Busybox version is 1.22.1 (this is what it prints out, not sure about
> configuration and build details).
> The same script works well on busybox 1.16.0
> Unfortunately this does not reproduce on small example.
>
> The failing place in the script looks like;
> Somefunc() {
> local v
> echo "this prints"
> let "v = $foo & 0x000FFF "
I guess you have a 'set -e' somewhere in your script?
let returns the value it computed, so if $foo is different from 0, it will
return non-0. This causes the shell to exit.
It's POSIX behaviour.
Regards,
Arnout
> echo "this does not print"
> }
>
> We checked that the script does not contain weird unprintable characters and
> other obvious things. Just plain ascii.
>
> Best regards,
> pavel_a
>
>
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--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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