[libcxx] r349887 - Don't forward declare _FilesystemClock in C++03

[Eric Fiselier]

Author: ericwf
Date: Thu Dec 20 20:30:04 2018
New Revision: 349887

URL: http://llvm.org/viewvc/llvm-project?rev=349887&view=rev
Log:
Don't forward declare _FilesystemClock in C++03

Modified:
    libcxx/trunk/include/chrono

Modified: libcxx/trunk/include/chrono
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/chrono?rev=349887&r1=349886&r2=349887&view=diff
==============================================================================
--- libcxx/trunk/include/chrono (original)
+++ libcxx/trunk/include/chrono Thu Dec 20 20:30:04 2018
@@ -808,9 +808,11 @@ constexpr chrono::year
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
+#ifndef _LIBCPP_CXX03_LANG
 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
 struct _FilesystemClock;
 _LIBCPP_END_NAMESPACE_FILESYSTEM
+#endif // !_LIBCPP_CXX03_LANG
 
 _LIBCPP_BEGIN_NAMESPACE_STD