Patch from GM to make more implicit bools explicit since we can't stop MSVC warning about this in headers and to warn is the MSVC default. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@192548 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/future b/include/future index 2d969df..ff8e59b 100644 --- a/include/future +++ b/include/future 
@@ -542,14 +542,14 @@  __state_ |= __future_attached;  }  _LIBCPP_INLINE_VISIBILITY - bool __has_future_attached() const {return __state_ & __future_attached;} + bool __has_future_attached() const {return (__state_ & __future_attached) != 0;}    _LIBCPP_INLINE_VISIBILITY  void __set_deferred() {__state_ |= deferred;}    void __make_ready();  _LIBCPP_INLINE_VISIBILITY - bool __is_ready() const {return __state_ & ready;} + bool __is_ready() const {return (__state_ & ready) != 0;}    void set_value();  void set_value_at_thread_exit();