[m-rev.] for review: ensure signed integer arithmetic wraps on overflow in C grades

[Julien Fischer]

On Sat, 5 May 2018, Zoltan Somogyi wrote:

> On Sat, 5 May 2018 09:26:19 -0400 (EDT), Julien Fischer <jfischer at opturion.com> wrote:
>> Ensure signed integer arithmetic wraps on overflow in C grades.
>
> That's fine, with one possible minor exception.
>
> I have always put a space after the parenthesized type name in a C cast,
> but the runtime also has code that omits that space, as does this diff.

The code emitted by both C code generators has the space, so for
consistency I'll adjust the diff.

> There is nothing on the subject in compiler/notes/c_coding_standard.html.
> Should we add a rule about this? And if yes, which way?

I have no objections to adding such a rule.  With the space.

Julien.