Re: gcc.dg/cpp/charconst.c vs. WCHAR_TYPE "long int"

[Neil Booth <neil at daikokuya dot demon dot co dot uk>]

Franz Sirl wrote:-

> > >   c = L'very long';     /* { dg-warning "too long" "long wide charconst"
> > > } */
> > >
> > > /home/fsirl/cvsx/gcc31/gcc/testsuite/gcc.dg/cpp/charconst.c: In function
> > > `foo':
> > > /home/fsirl/cvsx/gcc31/gcc/testsuite/gcc.dg/cpp/charconst.c:28: warning:
> > > overflow in implicit constant conversion
> > >
> > > An additional (int) cast silences this extra warning, is this the right
> > > thing to do?
> >
> > I don't think so.  If the warning is correct, then lets make the type a
> > long.
> >
> > But first I'd like to understand why this is happening.  What is the
> > type of wchar_t on your system and how many bytes is it?  What about
> > int?  I can only see this happening if your int is 16 bits and wchar_t
> > 32, or 32 / 64 respectively.
> 
> WCHAR_TYPE_SIZE is 32, WCHAR_TYPE is "long int" and INT_TYPE_SIZE is 32 (see 
> rs6000/sysv4.h and rs6000/rs6000.h).

I don't understand why there is a diagnostic, then.  This is the same as
Linux, no?  Why don't I see a diagnostic?

Neil.