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Re: [RFC] Implementing addressof for C++0x

Jason Merrill wrote:
On 05/20/2010 08:18 AM, Peter Dimov wrote:
On 05/20/2010 01:55 PM, Paolo Carlini wrote:
It's uglier because the code above doesn't work for functions,

By the way, do you have a specific testcase in mind?

Because addressof_fn_test.cpp, part of Boost, passes... 

This is probably a g++/gcc extension... some compilers do not allow
references to functions to be casted to char&, and I believe the
standard doesn't permit that, either.

The standard permits a compiler to accept or reject such a cast.

5.2.10/8: Converting a pointer to a function into a pointer to an object type or vice versa is conditionally-supported.

Thanks; that is, then, why the latest Comeau accepts it. It didn't occur to me to try the earlier versions on http://www.comeaucomputing.com/tryitout/ - they reject the code. This paragraph is a new addition, not present in C++03; "conditionally supported" is a C++0x-ism. :-)

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