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-rw-r--r--absl/container/internal/hash_policy_testing.h6
-rw-r--r--absl/container/internal/layout.h18
-rw-r--r--absl/container/internal/layout_test.cc33
3 files changed, 34 insertions, 23 deletions
diff --git a/absl/container/internal/hash_policy_testing.h b/absl/container/internal/hash_policy_testing.h
index 38bbec77..7fb819a7 100644
--- a/absl/container/internal/hash_policy_testing.h
+++ b/absl/container/internal/hash_policy_testing.h
@@ -169,7 +169,11 @@ auto keys(const Set& s)
// take allocator arguments. This test is defined ad-hoc for the platforms
// we care about (notably Crosstool 17) because libstdcxx's useless
// versioning scheme precludes a more principled solution.
-#if defined(__GLIBCXX__) && __GLIBCXX__ <= 20140425
+// From GCC-4.9 Changelog: (src: https://gcc.gnu.org/gcc-4.9/changes.html)
+// "the unordered associative containers in <unordered_map> and <unordered_set>
+// meet the allocator-aware container requirements;"
+#if (defined(__GLIBCXX__) && __GLIBCXX__ <= 20140425 ) || \
+( __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 9 ))
#define ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS 0
#else
#define ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS 1
diff --git a/absl/container/internal/layout.h b/absl/container/internal/layout.h
index 676c7d67..a9c1244a 100644
--- a/absl/container/internal/layout.h
+++ b/absl/container/internal/layout.h
@@ -232,13 +232,17 @@ struct SizeOf : NotAligned<T>, std::integral_constant<size_t, sizeof(T)> {};
template <class T, size_t N>
struct SizeOf<Aligned<T, N>> : std::integral_constant<size_t, sizeof(T)> {};
+// Note: workaround for https://gcc.gnu.org/PR88115
template <class T>
-struct AlignOf : NotAligned<T>, std::integral_constant<size_t, alignof(T)> {};
+struct AlignOf : NotAligned<T> {
+ static constexpr size_t value = alignof(T);
+};
template <class T, size_t N>
-struct AlignOf<Aligned<T, N>> : std::integral_constant<size_t, N> {
+struct AlignOf<Aligned<T, N>> {
static_assert(N % alignof(T) == 0,
"Custom alignment can't be lower than the type's alignment");
+ static constexpr size_t value = N;
};
// Does `Ts...` contain `T`?
@@ -290,7 +294,7 @@ std::string TypeName() {
#ifdef ABSL_INTERNAL_HAS_CXA_DEMANGLE
demangled = abi::__cxa_demangle(typeid(T).name(), nullptr, nullptr, &status);
#endif
- if (status == 0 && demangled != nullptr) { // Demangling succeeeded.
+ if (status == 0 && demangled != nullptr) { // Demangling succeeded.
absl::StrAppend(&out, "<", demangled, ">");
free(demangled);
} else {
@@ -396,7 +400,7 @@ class LayoutImpl<std::tuple<Elements...>, absl::index_sequence<SizeSeq...>,
static_assert(N < NumOffsets, "Index out of bounds");
return adl_barrier::Align(
Offset<N - 1>() + SizeOf<ElementType<N - 1>>() * size_[N - 1],
- ElementAlignment<N>());
+ ElementAlignment<N>::value);
}
// Offset in bytes of the array with the specified element type. There must
@@ -445,7 +449,7 @@ class LayoutImpl<std::tuple<Elements...>, absl::index_sequence<SizeSeq...>,
return Size<ElementIndex<T>()>();
}
- // The number of elements of all arrays for which they are known.
+ // The number of elements of all arrays for which they are known.
constexpr std::array<size_t, NumSizes> Sizes() const {
return {{Size<SizeSeq>()...}};
}
@@ -610,7 +614,7 @@ class LayoutImpl<std::tuple<Elements...>, absl::index_sequence<SizeSeq...>,
#ifdef ADDRESS_SANITIZER
PoisonPadding<Char, N - 1>(p);
// The `if` is an optimization. It doesn't affect the observable behaviour.
- if (ElementAlignment<N - 1>() % ElementAlignment<N>()) {
+ if (ElementAlignment<N - 1>::value % ElementAlignment<N>::value) {
size_t start =
Offset<N - 1>() + SizeOf<ElementType<N - 1>>() * size_[N - 1];
ASAN_POISON_MEMORY_REGION(p + start, Offset<N>() - start);
@@ -690,7 +694,7 @@ class Layout : public internal_layout::LayoutType<sizeof...(Ts), Ts...> {
//
// It's allowed to pass fewer array sizes than the number of arrays. E.g.,
// if all you need is to the offset of the second array, you only need to
- // pass one argument -- the number of elements in the first arrays.
+ // pass one argument -- the number of elements in the first array.
//
// // int[3] followed by 4 bytes of padding and an unknown number of
// // doubles.
diff --git a/absl/container/internal/layout_test.cc b/absl/container/internal/layout_test.cc
index f35157a3..224f741a 100644
--- a/absl/container/internal/layout_test.cc
+++ b/absl/container/internal/layout_test.cc
@@ -45,7 +45,17 @@ Expected Type(Actual val) {
return val;
}
-using Int128 = int64_t[2];
+// Helper class to test different size and alignments.
+struct alignas(8) Int128 {
+ uint64_t a, b;
+ friend bool operator==(Int128 lhs, Int128 rhs) {
+ return std::tie(lhs.a, lhs.b) == std::tie(rhs.a, rhs.b);
+ }
+
+ static std::string Name() {
+ return internal_layout::adl_barrier::TypeName<Int128>();
+ }
+};
// Properties of types that this test relies on.
static_assert(sizeof(int8_t) == 1, "");
@@ -1361,12 +1371,6 @@ TEST(Layout, PoisonPadding) {
}
TEST(Layout, DebugString) {
- const std::string int64_type =
-#ifdef _MSC_VER
- "__int64";
-#else // _MSC_VER
- std::is_same<int64_t, long long>::value ? "long long" : "long"; // NOLINT
-#endif // _MSC_VER
{
constexpr auto x = Layout<int8_t, int32_t, int8_t, Int128>::Partial();
EXPECT_EQ("@0<signed char>(1)", x.DebugString());
@@ -1384,24 +1388,24 @@ TEST(Layout, DebugString) {
constexpr auto x = Layout<int8_t, int32_t, int8_t, Int128>::Partial(1, 2, 3);
EXPECT_EQ(
"@0<signed char>(1)[1]; @4<int>(4)[2]; @12<signed char>(1)[3]; "
- "@16<" +
- int64_type + " [2]>(16)",
+ "@16" +
+ Int128::Name() + "(16)",
x.DebugString());
}
{
constexpr auto x = Layout<int8_t, int32_t, int8_t, Int128>::Partial(1, 2, 3, 4);
EXPECT_EQ(
"@0<signed char>(1)[1]; @4<int>(4)[2]; @12<signed char>(1)[3]; "
- "@16<" +
- int64_type + " [2]>(16)[4]",
+ "@16" +
+ Int128::Name() + "(16)[4]",
x.DebugString());
}
{
constexpr Layout<int8_t, int32_t, int8_t, Int128> x(1, 2, 3, 4);
EXPECT_EQ(
"@0<signed char>(1)[1]; @4<int>(4)[2]; @12<signed char>(1)[3]; "
- "@16<" +
- int64_type + " [2]>(16)[4]",
+ "@16" +
+ Int128::Name() + "(16)[4]",
x.DebugString());
}
}
@@ -1528,8 +1532,7 @@ class CompactString {
const char* c_str() const {
// Equivalent to reinterpret_cast<char*>(p.get() + sizeof(size_t)).
// The argument in Partial(1) specifies that we have size_t[1] in front of
- // the
- // characters.
+ // the characters.
return L::Partial(1).Pointer<char>(p_.get());
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 01:30:27 +0000