On 6 Feb., 16:32, heplesser <heples...@gmail.com> wrote:
> Hi!
>
> I would like to seek your assistance in clarifying whether a certain
> piece of code is legal. The code is
>
> --------------------------
> class A
> {
> private:
>    struct S_ {
>      enum SVE { X, Y, Z };
>    };
>
> private:
>    template <S_::SVE e>
>    double f() const { return 0.0; }};
>
> ------------------------
>
> If I compile this with the IBM xlc++ compiler v 9.0, the compiler
> claims that
>
>    line 9.21: 1540-0300 (S) The "private" member "struct A::S_" cannot
> be accessed.
>
> All other compilers I have tested (g++ 4.4.1, icpc 11.1, pgCC 7.1-2)
> accept this code and I believe the code to be correct, as S_ is a
> member of class A, so S_ should be visible anywhere in A, and SVE is a
> public member of S_.
>
> Am I wrong?

You code example looks well-formed and it looks like
a defect in the IBM compiler. As a workaround I suggest
that you try the following

class A
{
private:
    struct S_ {
      friend class A;
      enum SVE { X, Y, Z };
    };

private:
    template <S_::SVE e>
    double f() const { return 0.0; }
};

HTH & Greetings from Bremen,

Daniel Kr   gler



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Hi!

I would like to seek your assistance in clarifying whether a certain
piece of code is legal. The code is

--------------------------
class A
{
private:
   struct S_ {
     enum SVE { X, Y, Z };
   };

private:
   template <S_::SVE e>
   double f() const { return 0.0; }
};
------------------------

If I compile this with the IBM xlc++ compiler v 9.0, the compiler
claims that

   line 9.21: 1540-0300 (S) The "private" member "struct A::S_" cannot
be accessed.

All other compilers I have tested (g++ 4.4.1, icpc 11.1, pgCC 7.1-2)
accept this code and I believe the code to be correct, as S_ is a
member of class A, so S_ should be visible anywhere in A, and SVE is a
public member of S_.

Am I wrong?

Thanks for any advice!
Hans

--
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[              --- Please see the FAQ before posting. ---               ]
[ FAQ: http://www.comeaucomputing.com/csc/faq.html                      ]