Jeremy Nimmer ee8dd08c6c Fix storage deprecation warning when in C++17 mode
Fixes "error: redundant redeclaration of 'constexpr' static data member
'ghc::filesystem::path_helper_base<char_type>::preferred_separator'
[-Werror=deprecated]" when compiling with GCC 7.4 in -std=c++17 mode.
2019-09-30 09:45:59 -04:00
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