[cxx-abi-dev] Proposed ABI changes for new C++0x SFINAE rules

[Jason Merrill]

On 08/18/2010 02:30 PM, John McCall wrote:
> On Aug 11, 2010, at 10:57 AM, David Vandevoorde wrote:
>> <SFINAE_diffs-3>
>
> We should probably specify what happens when mangling an operator of
> unknown arity, i.e. when mangling the signature for
> template <class T> void f(decltype(&T::operator+));
> I think all the existing frontends mangle this as the binary operator in
> all four cases (+ - * &), but it would be good to spell this out in the ABI.

At the end of 5.1.5:

"If the qualified name refers to an operator for which both unary and 
binary manglings are available, the mangling chosen is the mangling for 
the binary version."

Jason