Merge pull request #1403 from AtariDreams:c++11

PiperOrigin-RevId: 511539869
Change-Id: I32d5e91537b078691988e7e6d3244c682eb8d7d2

4 files changed, 10 insertions, 26 deletions

diff --git a/absl/types/internal/span.h b/absl/types/internal/span.h
index 344ad4db..a196362a 100644
--- a/absl/types/internal/span.h
+++ b/absl/types/internal/span.h
@@ -88,7 +88,7 @@ using EnableIfMutable =
 template <template <typename> class SpanT, typename T>
 bool EqualImpl(SpanT<T> a, SpanT<T> b) {
   static_assert(std::is_const<T>::value, "");
-  return absl::equal(a.begin(), a.end(), b.begin(), b.end());
+  return std::equal(a.begin(), a.end(), b.begin(), b.end());
 }
 
 template <template <typename> class SpanT, typename T>
diff --git a/absl/types/internal/variant.h b/absl/types/internal/variant.h
index c82ded44..fc8829e5 100644
--- a/absl/types/internal/variant.h
+++ b/absl/types/internal/variant.h
@@ -877,8 +877,8 @@ struct IndexOfConstructedType<
 template <std::size_t... Is>
 struct ContainsVariantNPos
     : absl::negation<std::is_same<  // NOLINT
-          absl::integer_sequence<bool, 0 <= Is...>,
-          absl::integer_sequence<bool, Is != absl::variant_npos...>>> {};
+          std::integer_sequence<bool, 0 <= Is...>,
+          std::integer_sequence<bool, Is != absl::variant_npos...>>> {};
 
 template <class Op, class... QualifiedVariants>
 using RawVisitResult =
diff --git a/absl/types/optional_test.cc b/absl/types/optional_test.cc
index 21653a90..83a9bb4a 100644
--- a/absl/types/optional_test.cc
+++ b/absl/types/optional_test.cc
@@ -97,9 +97,9 @@ struct StructorListener {
 // 4522: multiple assignment operators specified
 // We wrote multiple of them to test that the correct overloads are selected.
 #ifdef _MSC_VER
-#pragma warning( push )
-#pragma warning( disable : 4521)
-#pragma warning( disable : 4522)
+#pragma warning(push)
+#pragma warning(disable : 4521)
+#pragma warning(disable : 4522)
 #endif
 struct Listenable {
   static StructorListener* listener;
@@ -133,20 +133,11 @@ struct Listenable {
   ~Listenable() { ++listener->destruct; }
 };
 #ifdef _MSC_VER
-#pragma warning( pop )
+#pragma warning(pop)
 #endif
 
 StructorListener* Listenable::listener = nullptr;
 
-// ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST is defined to 1 when the standard
-// library implementation doesn't marked initializer_list's default constructor
-// constexpr. The C++11 standard doesn't specify constexpr on it, but C++14
-// added it. However, libstdc++ 4.7 marked it constexpr.
-#if defined(_LIBCPP_VERSION) && \
-    (_LIBCPP_STD_VER <= 11 || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR))
-#define ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST 1
-#endif
-
 struct ConstexprType {
   enum CtorTypes {
     kCtorDefault,
@@ -156,10 +147,8 @@ struct ConstexprType {
   };
   constexpr ConstexprType() : x(kCtorDefault) {}
   constexpr explicit ConstexprType(int i) : x(kCtorInt) {}
-#ifndef ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST
   constexpr ConstexprType(std::initializer_list<int> il)
       : x(kCtorInitializerList) {}
-#endif
   constexpr ConstexprType(const char*)  // NOLINT(runtime/explicit)
       : x(kCtorConstChar) {}
   int x;
@@ -352,11 +341,9 @@ TEST(optionalTest, InPlaceConstructor) {
   constexpr absl::optional<ConstexprType> opt1{absl::in_place_t(), 1};
   static_assert(opt1, "");
   static_assert((*opt1).x == ConstexprType::kCtorInt, "");
-#ifndef ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST
   constexpr absl::optional<ConstexprType> opt2{absl::in_place_t(), {1, 2}};
   static_assert(opt2, "");
   static_assert((*opt2).x == ConstexprType::kCtorInitializerList, "");
-#endif
 
   EXPECT_FALSE((std::is_constructible<absl::optional<ConvertsFromInPlaceT>,
                                       absl::in_place_t>::value));
@@ -1000,9 +987,8 @@ TEST(optionalTest, PointerStuff) {
 // Skip that test to make the build green again when using the old compiler.
 // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59296 is fixed in 4.9.1.
 #if defined(__GNUC__) && !defined(__clang__)
-#define GCC_VERSION (__GNUC__ * 10000 \
-                     + __GNUC_MINOR__ * 100 \
-                     + __GNUC_PATCHLEVEL__)
+#define GCC_VERSION \
+  (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
 #if GCC_VERSION < 40901
 #define ABSL_SKIP_OVERLOAD_TEST_DUE_TO_GCC_BUG
 #endif
@@ -1214,7 +1200,6 @@ void optionalTest_Comparisons_EXPECT_GREATER(T x, U y) {
   EXPECT_TRUE(x >= y);
 }
 
-
 template <typename T, typename U, typename V>
 void TestComparisons() {
   absl::optional<T> ae, a2{2}, a4{4};
@@ -1307,7 +1292,6 @@ TEST(optionalTest, Comparisons) {
   EXPECT_TRUE(e1 == e2);
 }
 
-
 TEST(optionalTest, SwapRegression) {
   StructorListener listener;
   Listenable::listener = &listener;
diff --git a/absl/types/span_test.cc b/absl/types/span_test.cc
index 13264aae..29e8681f 100644
--- a/absl/types/span_test.cc
+++ b/absl/types/span_test.cc
@@ -191,7 +191,7 @@ TEST(IntSpan, SpanOfDerived) {
 }
 
 void TestInitializerList(absl::Span<const int> s, const std::vector<int>& v) {
-  EXPECT_TRUE(absl::equal(s.begin(), s.end(), v.begin(), v.end()));
+  EXPECT_TRUE(std::equal(s.begin(), s.end(), v.begin(), v.end()));
 }
 
 TEST(ConstIntSpan, InitializerListConversion) {