C1001 internal error - templates, regression from VC++ 6.0

[Al Grant]

VC++ .NET 7.1 gives me an internal error from this code.
It worked fine in VC++ 6.0 and other compilers.
Are there any patches/SP's available for the 7.1 compiler?

template<typena me T> struct a { char d; T o; };
#define A(T) (sizeof(a<T>) - sizeof(T))
template<int N> struct AS { char x[N]; };
template<typena me T> AS<A(T)> AF(T const &);
#define AE(E) sizeof(AF(E))
int main(int n, char **) { return AE(n); }
/* ends */

[David Lowndes]

>VC++ .NET 7.1 gives me an internal error from this code.

It worked fine in VC++ 6.0 and other compilers.

FWIW, I can reproduce the ICE with 7.1, but it compiles cleanly with
the Whidbey compiler so it looks like MS have fixed this already - not
that that's much use to you at the minute!

If no one here comes up with a suggested work-around, I recommend that
you contact MS product support - they may be able to tell you how to
work around it, and if there isn't a work-around, there may be a fix
they can supply you with.

Dave
--
MVP VC++ FAQ: http://www.mvps.org/vcfaq

[Graeme Prentice]

On Fri, 21 Nov 2003 07:20:58 -0800, "Al Grant"
<an*******@disc ussions.microso ft.com> wrote:

VC++ .NET 7.1 gives me an internal error from this code.
It worked fine in VC++ 6.0 and other compilers.
Are there any patches/SP's available for the 7.1 compiler?

template<typen ame T> struct a { char d; T o; };
#define A(T) (sizeof(a<T>) - sizeof(T))
template<int N> struct AS { char x[N]; };
template<typen ame T> AS<A(T)> AF(T const &);
#define AE(E) sizeof(AF(E))
int main(int n, char **) { return AE(n); }
/* ends */

Try this as a replacement for the A macro - it works for me.

template <typename T>
struct gs
{
static const size_t ret = sizeof (T);
};
#define A(T) ( gs< a<T> >::ret - gs<T>::ret)
Graeme