Windows style line endings... pita.

On Wed, May 4, 2022, 5:35 PM Brian Bi via Std-Discussion <
std-discussion_at_[hidden]> wrote:

> On Wed, May 4, 2022 at 4:47 PM Vladimir Grigoriev via Std-Discussion <
> std-discussion_at_[hidden]> wrote:
>
>> The following program
>>
>> namespace S
>> {
>>
>
> It looks like the "namespace S\n{" before this line is a typo. Is that so?
>
> I removed them, and the rest of the program compiles fine in GCC and
> Clang. https://godbolt.org/z/fYd8fhrjb
>
>
>> #include <iostream>
>>
>> namespace S
>> {
>>
>> template <unsigned N>
>> class X
>> {
>> public:
>> int i = N;
>>
>> friend X operator+( const X &a, const X &b ) noexcept
>> {
>> return { .i = a.i + b.i };
>> }
>> };
>>
>> inline X<256> operator+( const X<256> &a, const X<256> &b ) noexcept;
>>
>> }
>>
>> int main()
>> {
>> S::X<256>( *ptr )( const S::X<256>&a, const S::X<256>&b )
>> noexcept = &::S::operator+;
>>
>> std::cout << ptr( S::X<256>(), S::X<256>() ).i << '\n';
>> }
>>
>> compiles using MS VC++ (2019) but does not compile using gcc or clang.
>>
>> I suspect that the problem is that the friend function is a templated
>> entity that is not instantiated when the class granting friendship is
>> instantiated.
>>
>> On the other hand, this behavior contradicts the behavior when the class
>> is not a template class. Should the friend function be instantiated in such
>> a case?.
>>
>> With best regards
>> (Vlad from Moscow)
>> You can meet me at http://cpp.forum24.ru/ or www.stackoverflow.com or
>> http://ru.stackoverflow.com
>> --
>> Std-Discussion mailing list
>> Std-Discussion_at_[hidden]
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>>
>
>
> --
> *Brian Bi*
> --
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>