tree 1a38ec9cd5f5c9664401e83994021412fe176d5f
parent 8456a39a3ed73f3cd0c5a318eaa830dfc47c0fa3
author Gianfranco Valentino <gevalentino@google.com> 1610610101 +0000
committer CQ Bot <commit-bot@chromium.org> 1610610101 +0000

[stdcompat]: Add feature macro for optional.

Add feature macro for __cpp_lib_optional at 201606 draft for std20,17
and check that is not defined for std14.

Bug: 57349
Test: stdcompat-tests
Change-Id: I39bf72a869bd8eccf0a3da79f5184fc4ca9f31e7
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/464995
Commit-Queue: Gianfranco Valentino <gevalentino@google.com>
Reviewed-by: Roland McGrath <mcgrathr@google.com>