tree 4e0f98ca92e4f31f4205de16ecc82457d99cabcc
parent dae39608bbfe0d0bdea05e041a77df1e3e99e48b
author Eric Fiselier <eric@efcs.ca> 1484601308 +0000
committer Eric Fiselier <eric@efcs.ca> 1484601308 +0000

Fix std::tuples EBO when targeting the MSVC ABI.

MSVC/clang-cl doesn't do a full EBO unless __declspec(empty_bases)
is applied to the derived type. This causes certain tuple tests
to fail.

This patch adds the empty_bases attribute to __tuple_impl in order
for tuple to fully provide the EBO.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@292159 91177308-0d34-0410-b5e6-96231b3b80d8