[cxx-abi-dev] C++17 mangling for result of lambda conversion function

[David Vandevoorde]

> On Oct 5, 2016, at 5:43 PM, Richard Smith <richardsmith at googlers.com> wrote:
> 
> On 5 October 2016 at 11:54, Hubert Tong <hstong at ca.ibm.com <mailto:hstong at ca.ibm.com>> wrote:
> In N4604 subclause 5.1.5 [expr.prim.lambda] paragraph 7, the conversion function to a pointer-to-function is constexpr.
> This means that the resulting pointer-to-function may be used as a template non-type argument and thus need a mangling.
> 
> Clang currently mangles as a member of the closure type named __invoke, and GCC seems to use _FUN in place of __invoke.
> I find the Clang name to be less jarring.
> 
> I'd be fine with specifying either of these, or with some new custom mangling. I note that EDG uses the _FUN mangling, like GCC, but unlike GCC and Clang, does not make the name visible to class member name lookup.

Except in our GNU and Clang C++ modes, where we do make the name visible ;-)  (Our Clang-mode behavior is accidental in this regard, though.)

	Daveed
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