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Export of internal Abseil changes

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87cdfd6aa40941e116cd79ef70f9a7a8271db163 by Abseil Team <absl-team@google.com>:

Fix a typo in random.h API documentation.

PiperOrigin-RevId: 305176308

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8a38e1df49a18a954daca3ce617fd69045ff4c19 by Derek Mauro <dmauro@google.com>:

Import GitHub #647: Allow external add_subdirectory for using GoogleTest

PiperOrigin-RevId: 305156797

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b1a2441536d4964fbe4e2329e74c322e6c41a4e6 by Gennadiy Rozental <rogeeff@google.com>:

temporary roll back.

PiperOrigin-RevId: 305149619

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c78767577264348d2f881893f9407aadfe73ab75 by CJ Johnson <johnsoncj@google.com>:

Rollback update to linux_clang-latest container while investigating
a compiler bug.

PiperOrigin-RevId: 304897689

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3c6fd38f53d2e982569fdba4043f75271c7b5de4 by Derek Mauro <dmauro@google.com>:

Update linux_clang-latest container to one based on Ubuntu 18.04,
which has libstdc++-8.

PiperOrigin-RevId: 304885120
GitOrigin-RevId: 87cdfd6aa40941e116cd79ef70f9a7a8271db163
Change-Id: Iefa6efee93907ec0eecb8add804c5cc2f052b64d
This commit is contained in:
Abseil Team 2020-04-06 20:53:47 -07:00 • committed by Gennadiy Rozental
parent c01b9916e7
commit 73ea9a9572
5 changed files with 173 additions and 351 deletions
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47
absl/strings/cord_test.cc
View file

@ -1403,53 +1403,6 @@ TEST(CordChunkIterator, Operations) {
VerifyChunkIterator(subcords, 128);
}
TEST(CordChunkIterator, MaxLengthFullTree) {
// Start with a 1-byte cord, and then double its length in a loop. We should
// be able to do this until the point where we would overflow size_t.
absl::Cord cord;
size_t size = 1;
AddExternalMemory("x", &cord);
EXPECT_EQ(cord.size(), size);
const int kCordLengthDoublingLimit = std::numeric_limits<size_t>::digits - 1;
for (int i = 0; i < kCordLengthDoublingLimit; ++i) {
cord.Prepend(absl::Cord(cord));
size <<= 1;
EXPECT_EQ(cord.size(), size);
auto chunk_it = cord.chunk_begin();
EXPECT_EQ(*chunk_it, "x");
}
EXPECT_DEATH_IF_SUPPORTED(
(cord.Prepend(absl::Cord(cord)), *cord.chunk_begin()),
"Cord is too long");
}
TEST(CordChunkIterator, MaxDepth) {
// By reusing nodes, it's possible in pathological cases to build a Cord that
// exceeds both the maximum permissible length and depth. In this case, the
// violation of the maximum depth is reported.
absl::Cord left_child;
AddExternalMemory("x", &left_child);
absl::Cord root = left_child;
for (int i = 0; i < absl::cord_internal::MaxCordDepth() - 2; ++i) {
size_t new_size = left_child.size() + root.size();
root.Prepend(left_child);
EXPECT_EQ(root.size(), new_size);
auto chunk_it = root.chunk_begin();
EXPECT_EQ(*chunk_it, "x");
std::swap(left_child, root);
}
EXPECT_DEATH_IF_SUPPORTED(root.Prepend(left_child), "Cord is too long");
}
TEST(CordCharIterator, Traits) {
static_assert(std::is_copy_constructible<absl::Cord::CharIterator>::value,
"");