Implement LWG 3145: file_clock breaks ABI for C++17 implementations.

This patch adds std::chrono::file_clock, but without breaking the
existing ABI for std::filesystem.

llvm-svn: 349883

1 files changed, 0 insertions, 30 deletions

diff --git a/libcxx/include/filesystem b/libcxx/include/filesystem
index 339bb252fce..06a0eb33c4e 100644
--- a/libcxx/include/filesystem
+++ b/libcxx/include/filesystem
@@ -259,36 +259,6 @@ _LIBCPP_PUSH_MACROS
 
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
 
-struct _FilesystemClock {
-#if !defined(_LIBCPP_HAS_NO_INT128)
-  typedef __int128_t rep;
-  typedef nano period;
-#else
-  typedef long long rep;
-  typedef nano period;
-#endif
-
-  typedef chrono::duration<rep, period> duration;
-  typedef chrono::time_point<_FilesystemClock> time_point;
-
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
-
-  _LIBCPP_FUNC_VIS static time_point now() noexcept;
-
-  _LIBCPP_INLINE_VISIBILITY
-  static time_t to_time_t(const time_point& __t) noexcept {
-    typedef chrono::duration<rep> __secs;
-    return time_t(
-        chrono::duration_cast<__secs>(__t.time_since_epoch()).count());
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  static time_point from_time_t(time_t __t) noexcept {
-    typedef chrono::duration<rep> __secs;
-    return time_point(__secs(__t));
-  }
-};
-
 typedef chrono::time_point<_FilesystemClock> file_time_type;
 
 struct _LIBCPP_TYPE_VIS space_info {