commit 080f06df5416fa8f6efdf413ff1239d33b5d5310
author Louis Dionne <ldionne@apple.com> Wed Mar 20 21:18:14 2019 +0000
committer Louis Dionne <ldionne@apple.com> Wed Mar 20 21:18:14 2019 +0000
tree 662558b392c6f7fd7d1b2b4f297f76faba1fa890
parent ce2670ada33fee90ee2dfd45c4b8be6048438d06

[libc++] Mark <filesystem> as unavailable on Apple platforms using pragmas

Summary:
Also add the corresponding XFAILs to tests that require filesystem.
The approach taken to mark <filesystem> as unavailable in this patch
is to mark all the header as unavailable using #pragma clang attribute.
Marking each declaration using the attribute is more intrusive and
does not provide a lot of value right now because pretty much everything
in <filesystem> requires dylib support, often transitively.

This is an alternative to https://reviews.llvm.org/D59093.
A similar (but partial) patch was already applied in r356558.

Reviewers: mclow.lists, EricWF, serge-sans-paille

Subscribers: christof, jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D59224

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@356616 91177308-0d34-0410-b5e6-96231b3b80d8