Re: Template specialization error for "void" template parameter in GCC

Re: Template specialization error for "void" template parameter in GCC

[Jonathan Wakely]

On 21 September 2011 11:41, Himanshu12 G wrote:
>
> Hi ,
> Thanks for your reply, the foo.h is already included.

I'll repeat what I said when you sent this to me off-list:

It isn't in the example code you posted, so you might get more help if
you post a proper example that actually demonstrates the problem, not
pseudo-code or incomplete example code that fails for different
reasons.

Re: Template specialization error for "void" template parameter in GCC

[Jonathan Wakely]

On 21 September 2011 06:21, himanshu.gupta wrote:
>
> Hi,
>
> The following code is giving errors while compiling with GCC 4.5.
>
> Foo.h Header File: declaration of template class.
> template<class T>
> class Foo
> {
>    void FooBar() const;
> };
>
> Foo.cpp Source File: explicit definitions for member function of template
> class Foo.
> template<>
> void Foo<void>::FooBar () const
> {
>    do something...
> }
>
> The above explicit function declaration for "void" is giving error...
> error: template-id 'type<>' for 'void Foo<void>::FooBar() const' does not
> match any template declaration
>
> The same explicit function declarations with other types - int, unsigned
> int, etc. compiles successfully. The explicit specialization for "void"
> however seems to only compile without template<> being added. But I believe
> as per GCC they do require template<>.
>
> Is it an error with GCC for "void" template parameter? Or am I missing
> something with syntax/ GCC compile option?

It looks as though you've forgotten to #include "Foo.h"

Template specialization error for "void" template parameter in GCC

[himanshu.gupta]

Hi,

The following code is giving errors while compiling with GCC 4.5.

Foo.h Header File: declaration of template class.
template<class T>
class Foo
{
    void FooBar() const;
};

Foo.cpp Source File: explicit definitions for member function of template
class Foo.
template<>
void Foo<void>::FooBar () const
{
    do something...
}

The above explicit function declaration for "void" is giving error...
error: template-id 'type<>' for 'void Foo<void>::FooBar() const' does not
match any template declaration

The same explicit function declarations with other types - int, unsigned
int, etc. compiles successfully. The explicit specialization for "void"
however seems to only compile without template<> being added. But I believe
as per GCC they do require template<>.

Is it an error with GCC for "void" template parameter? Or am I missing
something with syntax/ GCC compile option?
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