Richard Smith 7ac42374ab [c++20] Fix some ambiguities in our mangling of lambdas with explicit ...

template parameters.

This finishes the implementation of the proposal described in
https://github.com/itanium-cxx-abi/cxx-abi/issues/31. (We already
implemented the <lambda-sig> extensions, but didn't take them into
account when computing mangling numbers, and didn't deal properly with
expanded parameter packs, and didn't disambiguate between different
levels of template parameters in manglings.)

llvm-svn: 371004

2019-09-05 01:23:47 +00:00

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