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

[Hubert Tong]

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.

-- HT

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Hubert S. K. Tong
IBM Canada Ltd., C2/YGH/8200/MKM
8200 Warden Avenue, Markham, Ontario  L6G 1C7, Canada
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