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Export of internal Abseil changes.

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8becce38c862a044db194a9aea1b505796a46d6f by Abseil Team <absl-team@google.com>:

Updates the FixedArray's constructors to be exception safe by preventing double deletions. Also adds exception safety tests for FixedArray to document/enforce the expected behavior.

PiperOrigin-RevId: 201964431

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794188b401a602b4be97190fb8738066fe1f9ca5 by Derek Mauro <dmauro@google.com>:

Fixes for str_format.h documentation.

PiperOrigin-RevId: 201951760

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beae3bdd6eee2cf61101102fddc35ada188f330b by Alex Strelnikov <strel@google.com>:

Add numeric_limits specialization for uint128.

Turns out numeric_limits is a case where the consensus is that it is okay to specialize for a user defined type.

PiperOrigin-RevId: 201944736

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b2b3444a52b36878ade1ae8801e69932b05fc4f9 by Shaindel Schwartz <shaindel@google.com>:

Internal change.

PiperOrigin-RevId: 201718662

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aa924c459922f39caabfc193998c58d0f4981ac0 by Abseil Team <absl-team@google.com>:

Typo fix.

PiperOrigin-RevId: 201692176

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bbfcaa7b1af331d9b97c92470608240c5c864fbc by Xiaoyi Zhang <zhangxy@google.com>:

Use ABSL_HAVE_ANY/OPTIONAL/VARIANT to conditionally compile out the definition of absl::bad_any_cast, absl::bad_optional_access, absl::bad_variant_access. This would fix the issues where users #include those header directly in C++17 modes.

PiperOrigin-RevId: 201683792
GitOrigin-RevId: 8becce38c862a044db194a9aea1b505796a46d6f
Change-Id: I60a7ad043136a439d82c374d225a1804016b0509
This commit is contained in:
Abseil Team 2018-06-25 09:18:19 -07:00 • committed by Alex Strelnikov
parent 4491d606df
commit 87a4c07856
20 changed files with 422 additions and 48 deletions
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43
absl/memory/memory_test.cc
View file

@ -611,4 +611,47 @@ TEST(AllocatorNoThrowTest, CustomAllocator) {
EXPECT_FALSE(absl::allocator_is_nothrow<UnspecifiedAllocator>::value);
}
TEST(MemoryInternal, UninitDefaultConstructNTrivial) {
constexpr int kInitialValue = 123;
constexpr int kExpectedValue = kInitialValue; // Expect no-op behavior
constexpr int len = 5;
struct TestObj {
int val;
};
static_assert(absl::is_trivially_default_constructible<TestObj>::value, "");
static_assert(absl::is_trivially_destructible<TestObj>::value, "");
TestObj objs[len];
for (auto& obj : objs) {
obj.val = kInitialValue;
}
absl::memory_internal::uninitialized_default_construct_n(objs, len);
for (auto& obj : objs) {
EXPECT_EQ(obj.val, kExpectedValue);
}
}
TEST(MemoryInternal, UninitDefaultConstructNNonTrivial) {
constexpr int kInitialValue = 123;
constexpr int kExpectedValue = 0; // Expect value-construction behavior
constexpr int len = 5;
struct TestObj {
int val{kExpectedValue};
};
static_assert(absl::is_trivially_destructible<TestObj>::value, "");
TestObj objs[len];
for (auto& obj : objs) {
obj.val = kInitialValue;
}
absl::memory_internal::uninitialized_default_construct_n(objs, len);
for (auto& obj : objs) {
EXPECT_EQ(obj.val, kExpectedValue);
}
}
} // namespace