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-rw-r--r--absl/types/variant_test.cc35
1 files changed, 11 insertions, 24 deletions
diff --git a/absl/types/variant_test.cc b/absl/types/variant_test.cc
index 80e8467e..463d775a 100644
--- a/absl/types/variant_test.cc
+++ b/absl/types/variant_test.cc
@@ -1977,29 +1977,17 @@ TEST(VariantTest, MonostateHash) {
}
TEST(VariantTest, Hash) {
- static_assert(type_traits_internal::IsHashEnabled<variant<int>>::value, "");
- static_assert(type_traits_internal::IsHashEnabled<variant<Hashable>>::value,
+ static_assert(type_traits_internal::IsHashable<variant<int>>::value, "");
+ static_assert(type_traits_internal::IsHashable<variant<Hashable>>::value, "");
+ static_assert(type_traits_internal::IsHashable<variant<int, Hashable>>::value,
"");
- static_assert(
- type_traits_internal::IsHashEnabled<variant<int, Hashable>>::value, "");
-
-#if defined(_MSC_VER) || \
- (defined(_LIBCPP_VERSION) && _LIBCPP_VERSION < 4000 && \
- _LIBCPP_STD_VER > 11) || \
- defined(__APPLE__)
- // For MSVC and libc++ (< 4.0 and c++14), std::hash primary template has a
- // static_assert to catch any user-defined type T that doesn't provide a hash
- // specialization. So instantiating std::hash<variant<T>> will result
- // in a hard error which is not SFINAE friendly.
-#define ABSL_STD_HASH_NOT_SFINAE_FRIENDLY 1
-#endif
-#ifndef ABSL_STD_HASH_NOT_SFINAE_FRIENDLY
- static_assert(
- !type_traits_internal::IsHashEnabled<variant<NonHashable>>::value, "");
- static_assert(!type_traits_internal::IsHashEnabled<
- variant<Hashable, NonHashable>>::value,
+#if ABSL_META_INTERNAL_STD_HASH_SFINAE_FRIENDLY_
+ static_assert(!type_traits_internal::IsHashable<variant<NonHashable>>::value,
"");
+ static_assert(
+ !type_traits_internal::IsHashable<variant<Hashable, NonHashable>>::value,
+ "");
#endif
// MSVC std::hash<std::variant> does not use the index, thus produce the same
@@ -2023,11 +2011,10 @@ TEST(VariantTest, Hash) {
EXPECT_GT(hashcodes.size(), 90);
// test const-qualified
+ static_assert(type_traits_internal::IsHashable<variant<const int>>::value,
+ "");
static_assert(
- type_traits_internal::IsHashEnabled<variant<const int>>::value, "");
- static_assert(
- type_traits_internal::IsHashEnabled<variant<const Hashable>>::value,
- "");
+ type_traits_internal::IsHashable<variant<const Hashable>>::value, "");
std::hash<absl::variant<const int>> c_hash;
for (int i = 0; i < 100; ++i) {
EXPECT_EQ(hash(i), c_hash(i));