Re: [Boost-users] boost::result_of and gcc

From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2007-09-28 12:55:31

Martin Ecker wrote:
> Hello,
> 
> I'm running into a problem when using boost::result_of with gcc 3.4.2 
> and 4.2.1 (with MingW).
> 
> The following program compiles fine with Visual C++ 8.0, but not with gcc:
> 

<snip code>

> I get the same error if I simply wrap test_function1 in another 
> template class as nested struct and then use it instead of test_function2.
> 
> Am I attempting to do something fundamentally wrong here, or is it a 
> bug in gcc?

It's a compiler bug fixed with GCC 4.2.2.

But it's often a good idea to deduce the function object's type 
(especially in case operator() is const qualified):

     template< class Self, typename T >
     struct result< Self(T) >
     ...

Regards,
Tobias