dc's stack breaks when doing modulo-0

[Markus Gothe]

Totally depends on the architecture how things are trapped etc...

//M

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	  Original Message  



From: wharms at bfs.de
Sent: 9 May 2019 09:03
To: busybox at busybox.net
Reply to: wharms at bfs.de
Subject: Re: dc's stack breaks when doing modulo-0




Am 08.05.2019 19:31, schrieb Markus Gothe:
>
> dc -e '4 0 % p' mess up the stack so bad that my MIPS kernel traps it and reboots.
>
> I think we should, like the regular dc, check for 0 as a divider when doing modulo.
>

Did you forward this to the mips kernel mailing list ?
user space programs should never be able to confuse the kernel.

re,
wh
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