[erlang-bugs] UBsan int overflows

[Tuncer Ayaz]

On Mon, Sep 22, 2014 at 12:02 PM, Lukas Larsson wrote:
>
> On 17/09/14 19:23, Tuncer Ayaz wrote:
> >
> > On Wed, Sep 17, 2014 at 2:33 PM, Tuncer Ayaz wrote:
> > >
> > > Building OTP-17.3 with --enable-sanitizers=undefined, you can see
> > > the following during the build of lib/wx/examples/demo:
> > >   ERLC   ex_aui.beam
> > > beam/bif.c:2828:5: runtime error: signed integer overflow:
> > > 426141286 * 10 cannot be represented in type 'int'
> > >
> > > I thought this was also fixed.
>
> As did I. I wonder where that fix went... I've created a new fix for it.
>
> > More during dialyzer --build_plt:
> > beam/erl_process.c:9024:2: runtime error: signed integer overflow:
> > 2147482509 + 2001 cannot be represented in type 'int'
> > beam/erl_process.c:4908:35: runtime error: signed integer overflow:
> > 3984 * 625175 cannot be represented in type 'int'
> >
> I've noticed these as well and a couple of other ones in
> erl_process.c. I've added them to our backlog to fix.

Thanks, and please keep us posted.