tree cb8a2e2f85c5af2e0288a0926c1ddbfadae7fb42
parent b933d37cd3774e5431b35e82187eebb59b1ff59e
author Louis Dionne <ldionne@apple.com> 1579639183 -0800
committer Louis Dionne <ldionne@apple.com> 1579655715 -0800

[libc++] Make sure std::is_scalar returns true for block types

Summary:
The compiler already treats them as scalar types, so the library should
too. Furthermore, this allows blocks to be used in more places, for
example in std::optional, which requires an object type.

rdar://problem/57892832

Reviewers: dexonsmith, EricWF, mclow.lists
Differential Revision: https://reviews.llvm.org/D72708