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From: Rich Felker <dalias@libc.org>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: "Arithmetic exception" with modulus operator '%'
Date: Thu, 14 Feb 2019 18:58:14 -0500
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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