Re: [gfortran] add ISATTY and TTYNAM intrinsics

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Aug 10, 2005, at 8:54 AM, Jack Howarth wrote:

> FX,
>     I forgot to mention that since the gcc cvs I built last night now
> contains your ISATTY and TTYNAM intrinsics patch, I regressed the
> portion of the xplor.patch which worked around the prior absence
> of the ISATTY intrinsic in gfortran. The resulting xplor-nih build
> works fine.
>     One other question. Do you know much c++? I had to make one change
> to some buggy c++ code to allow gcc 4.0 and main branch to compile
> xplor-nih...


> I am trying to figure out if this is catching some new buggy c++ which
> is no longer accepted by the g++ compiler in gcc 4.1 or if this is a
> regression in that branch.

The code is invalid C++ as "friend class" does not define a forward
declaration.  Also for 4.1, the function norm is not considered as it
is declared after the use as 4.1

Both are invalid C++.
The example for the second issue is:

template<class T> class FixedVector;
template<class T> void  norm(const FixedVector<T>& v);
template <class T> T g(void);
template<class T> void f(void) { norm(g<T>()); }
double norm(const double& v) {}
static void _wrap_sqrt__SWIGPY_1(){f<int >();}

there is only one norm before f, so the overloaded set of norm in the 
template f is
just that one norm.  If you move the other norm before the f, it works 
as expected in
both GCC 4.1.0 and ICC in strict mode.

Thanks,
Andrew Pinski