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Have you ever write template function that only needs type instead of object?

Compiler

Have you ever write template function that only needs type instead of object?

by  hcexi  Posted    (Edited  )
very simple example:

Code: 
template < class Q >
size_t getSize()
{
    return sizeof( Q );
}

It seems that in a case of multiple use of such function compiler generates incorrect argument type passed. Check this:

Code: 
int main()
{
	std::cout << getSize< char >() << " : " << sizeof( char ) << std::endl;
	std::cout << getSize< int >() << " : " << sizeof( int ) << std::endl;
	std::cout << getSize< double >() << " : " << sizeof( double ) << std::endl;

	return 0;
}

From my point of view it's a compiler bug and I do recommend in such case to rewrite fuction into this format:

Code: 
template< class Q >
size_t getSize( Q* q=0 )
{
	return sizeof( Q );
}
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