From: Rich Felker <dalias@libc.org>
To: "jounijl@yahoo.co.uk" <jounijl@yahoo.co.uk>
Cc: musl@lists.openwall.com
Subject: Re: "Arithmetic exception" with modulus operator '%'
Date: Thu, 14 Feb 2019 18:58:14 -0500 [thread overview]
Message-ID: <20190214235814.GY23599@brightrain.aerifal.cx> (raw)
In-Reply-To: <a1b6f88d-a0c1-5dad-aecd-98394573574e@yahoo.co.uk>
On Fri, Feb 15, 2019 at 03:35:23AM +0000, jounijl@yahoo.co.uk wrote:
>
> As in the headline. Program stops and prints "Arithmetic exception"
> at the line where the modulus operator '%' is.
>
> I'm compiling in Alpine linux with clang installed from apk:s:
>
> clang -c test.c
> clang -o test test.o
>
> The code is:
>
> ----- snip -----
> unsigned int unum = 0;
> unsigned int umod = 0;
> unsigned int ures = 0;
> ures = unum % umod; // <-- this one
> ----- /snip -----
>
> The variables have some values other than 0.
I don't follow. You say they have some value other than 0, but the
above example snippet has them as zero, and if they're 0 it's
undefined behavior and a fault of some sort is a typical result. What
did you expect to happen?
Rich
next prev parent reply other threads:[~2019-02-14 23:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-15 3:35 jounijl
2019-02-14 23:58 ` Rich Felker [this message]
2019-02-15 10:31 ` jounijl
2019-02-15 17:21 ` Rich Felker
2019-02-15 10:05 ` Szabolcs Nagy
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