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authorGravatar Abseil Team <absl-team@google.com>2019-04-12 00:26:40 -0700
committerGravatar Shaindel Schwartz <shaindel@google.com>2019-04-12 15:05:20 -0400
commita02f62f456f2c4a7ecf2be3104fe0c6e16fbad9a (patch)
treef272090343f4daae3a1d06de120db8ebc54cfc72 /absl/base/casts.h
parent0b545b460141b882b244a1efcef7621d59278160 (diff)
Export of internal Abseil changes.
-- 5755b40f6025f3ca126070fc68adb8fde9a7f01b by Abseil Team <absl-team@google.com>: Fix -Wextra-semi error. PiperOrigin-RevId: 243215850 -- 3b6b6e18df9fbd233943cae460f0063f4efaa7c7 by Eric Fiselier <ericwf@google.com>: Internal Change. PiperOrigin-RevId: 243152671 -- 82eef03f246009c806c25607c5682547cb4ad21e by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 243151861 -- c14e6340fca7070634e0ecfdf97833d930dd0e5d by Samuel Benzaquen <sbenza@google.com>: Internal change PiperOrigin-RevId: 243123590 -- 9abb7a6b22457c0aa72d72b3b9392efd226d302a by Andy Getzendanner <durandal@google.com>: Implement operator<<(std::ostream &, absl::LogSeverity) so that absl::LogSeverity values can be streamed. PiperOrigin-RevId: 243117646 GitOrigin-RevId: 5755b40f6025f3ca126070fc68adb8fde9a7f01b Change-Id: I7ea607d8a4e803ad15a3090139271f58ad4173a3
Diffstat (limited to 'absl/base/casts.h')
-rw-r--r--absl/base/casts.h22
1 files changed, 7 insertions, 15 deletions
diff --git a/absl/base/casts.h b/absl/base/casts.h
index 00196d2..a381c42 100644
--- a/absl/base/casts.h
+++ b/absl/base/casts.h
@@ -30,28 +30,20 @@
#include "absl/base/internal/identity.h"
#include "absl/base/macros.h"
+#include "absl/meta/type_traits.h"
namespace absl {
namespace internal_casts {
-// NOTE: Not a fully compliant implementation of `std::is_trivially_copyable`.
-// TODO(calabrese) Branch on implementations that directly provide
-// `std::is_trivially_copyable`, create a more rigorous workaround, and publicly
-// expose in meta/type_traits.
-template <class T>
-struct is_trivially_copyable
- : std::integral_constant<
- bool, std::is_destructible<T>::value&& __has_trivial_destructor(T) &&
- __has_trivial_copy(T) && __has_trivial_assign(T)> {};
-
template <class Dest, class Source>
struct is_bitcastable
- : std::integral_constant<bool,
- sizeof(Dest) == sizeof(Source) &&
- is_trivially_copyable<Source>::value &&
- is_trivially_copyable<Dest>::value &&
- std::is_default_constructible<Dest>::value> {};
+ : std::integral_constant<
+ bool,
+ sizeof(Dest) == sizeof(Source) &&
+ type_traits_internal::is_trivially_copyable<Source>::value &&
+ type_traits_internal::is_trivially_copyable<Dest>::value &&
+ std::is_default_constructible<Dest>::value> {};
} // namespace internal_casts