Re: Pari svn on MSVC

[Jason Moxham <jason@njkfrudils.plus.com>]

On Saturday 27 June 2009 15:39:09 Bill Allombert wrote:
> On Sat, Jun 27, 2009 at 01:07:15AM +0100, Jason Moxham wrote:
> >> Does that cause a compiler failure ? Even gcc 2.95 handles that.
> >
> > yes
> > eg  jay.c is
> > ----------
> > int     main(void)
> > {
> > const int n=10;
> > long a[n];
> > return 0;}
> > ------------
> >
> > cl jay.c
> > Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.21022.08 for
> > 80x86
> > Copyright (C) Microsoft Corporation.  All rights reserved.
> >
> > jay.c
> > jay.c(4) : error C2057: expected constant expression
> > jay.c(4) : error C2466: cannot allocate an array of constant size 0
> > jay.c(4) : error C2133: 'a' : unknown size
>
> OK, what is the C standard supported by this compiler ?
> Can it be switched to C99 mode ?
>
> (I do not know whether this code is C89 compliant. It is certainly
> C99 compliant since C99 allows array size to be computed at run-time)
>
> Cheers,
> Bill.

MSVC is apparently a C89 for plain C , and a C99 for C++ , so we could pretend 
that the files are c++ files to compile them under C99 , a bit risky perhaps.
I expect const int a , is not classed as a compile time constant in C89. MSVC 
does support a few thing not in C89 such as // comments , long long .
Being MSVC , there is nothing we can do about it ;)

Jason