[libcxx] Fix test failure on GCC 4.9
authorLouis Dionne <ldionne@apple.com>
Tue, 11 Dec 2018 15:27:10 +0000 (15:27 +0000)
committerLouis Dionne <ldionne@apple.com>
Tue, 11 Dec 2018 15:27:10 +0000 (15:27 +0000)
commit17b65c0d584ad7860aabdcadca6abc816d860929
treeab01f18b88cd77d6a48a96b966d82b94e1cb0dc2
parentd1e3fe2190acbd9b38a2badf6e40d2f7014b9ed4
[libcxx] Fix test failure on GCC 4.9

GCC 4.9 seems to think that a constexpr default constructor implies
the constructor to be noexcept.

llvm-svn: 348850
libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/default.pass.cpp