PiperOrigin-RevId: 537088042
Change-Id: I6ef219a1a76baf3a751a6084a8fb8639c9bdac51

PiperOrigin-RevId: 537078029
Change-Id: Ibf0be0a8e83f62d492e96f1f1ed7839dbde30fae

Note that RE2 has taken a dependency on Abseil, so the `main` branch
should be used from now on. The `abseil` branch will go away soon...

PiperOrigin-RevId: 536941231
Change-Id: I502fc643a3763de51292396297b0939613473485

 https://google.github.io/styleguide/cppguide.html#Function_Comments

PiperOrigin-RevId: 536785792
Change-Id: I2963dea81a75b01b7275d784f6a2908816d0c7bf

Motivation is for WebAssembly to avoid perror which in turn requires file system emulation.

PiperOrigin-RevId: 536737294
Change-Id: I5177064c9451fb630ec5e9d0c0a0679fabd98afa

This avoids the need to use filesystem APIs just to write to stderr, which emscripten implements the same as this under the hood.

PiperOrigin-RevId: 536525710
Change-Id: I0a647a4593eacfba324505b6e8c4acfb577ac839

the cyclecounter by default, since it may be unsafe in some situations
(for example, if the system may enter a sleep state).

Fixes #1460

PiperOrigin-RevId: 535641718
Change-Id: I41c9cc4bc7a8ae7280ff9df00abd57668205045b

PiperOrigin-RevId: 535534819
Change-Id: Iccf8da3e0b084131e4c0dba205f3e190d3a66f4e

The fallback isn't totally portable, even within POSIX, but we can special case any future platforms where it's not just like this change does for Apple.

PiperOrigin-RevId: 535324103
Change-Id: Ib628925c4946b6c112373678fe37e9bb44259090

hash_test.cc leans heavily on INSTANTIATE_TYPED_TEST_SUITE_P, which is
quite memory- and CPU-hungry. Split a few heavyweight tests into a new
hash_instantiated_test.cc, reducing peak RAM consumption (or, on
multicore systems, compilation time).

PiperOrigin-RevId: 535305679
Change-Id: Ic204da0a47c749c3f7db5f902ade8d74ed3043bb

PiperOrigin-RevId: 535245982
Change-Id: I816f60c8b6476536df6836500f01c9a3ad88ddd4

PiperOrigin-RevId: 534841675
Change-Id: I6fbee6f0fe61d8dd51c9c7d93c3b47684a2f4d9f

PiperOrigin-RevId: 534824761
Change-Id: I0ab78fcb211bc5df756fb581761ed8febc3d18fd

`time_zone_impl.cc` uses `std::mutex`.

PiperOrigin-RevId: 534619764
Change-Id: Ied99569176766f9708d5504eac9c7024cdcfd64b

The non-RAW_ versions provide better output but weren't available when most of these tests were written.

There are just a couple spots where RAW_ is actually needed, e.g. signal handlers and malloc hooks.

Also fix a couple warnings in layout_test.cc newly surfaced because the optimizer understands CHECK_XX differently than INTERNAL_CHECK.

PiperOrigin-RevId: 534584435
Change-Id: I8d36fa809ffdaae5a3813064bd602cb8611c1613

Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1452

__cpuid is declared in intrin.h, but is excluded on non-Windows platforms.
We add this declaration to compensate.

Fixes #1358

PiperOrigin-RevId: 534449804
Change-Id: I91027f79d8d52c4da428d5c3a53e2cec00825c13

This includes an upgrade to CMake 3.26.3 and Bazel 6.2.0

This change includes support for both GCC 12 and 13 since we
were only testing GCC 11 before this change.

PiperOrigin-RevId: 534235753
Change-Id: I4183a02469b1c3425c52a31b71fcefe403315a42

PiperOrigin-RevId: 534213948
Change-Id: I56b897060b9afe9d3d338756c80e52f421653b55

This uses the same flags that Clang based builds use for Windows/Linux.

A future change will add floating point related flags and some warning
suppressions.  So, we clone the section rather than just change the check
at line 77.

Fixes #1450

PiperOrigin-RevId: 534179290
Change-Id: I9ad24518cc6a336fbaf602269fb01319491c8b60

PiperOrigin-RevId: 534150392
Change-Id: I4c0c111202178031e08d9edad3a4501800d924f0

PiperOrigin-RevId: 534117706
Change-Id: Id48f1538e71d30286675eb32c9fb3e6f47774aa8

Rename ABSL_*_IMPL macros to match the other ABSL_LOG_INTERNAL_* macros and to make sure it's clear that they're internal.

Also rename the log and check test files from .h to .inc per https://google.github.io/styleguide/cppguide.html#Self_contained_Headers.

PiperOrigin-RevId: 533603350
Change-Id: Iad5d8b683e33b63784cc8e64b84da09f5fc3bf1e

Previous implementation used a lookup table of 200 bytes which, if not in L1 cache, could cause memory stalls and consumes 3-4 cache lines. This is suboptimal in real world scenarious. We are going to use a purely scalar version of merging 2/4/8 bytes together.

PiperOrigin-RevId: 533576619
Change-Id: Icd730d18536f7eb35979b62582f6edf86b786019

PiperOrigin-RevId: 533455360
Change-Id: Ia95b225f8c186a831801f1ee008d7a5c0fff544b

__cpuid is declared in intrin.h, but is "excluded" on non-Windows
platforms.
We add this declaration to compensate.

Fixes #1358

PiperOrigin-RevId: 533121605
Change-Id: I82390045985db5db56e93c40eae24cdcd93e3ab4

libstdc++'s definition of std::launder places it behind a check for
__builtin_launder, which is not available before clang 8.

Fixes: #1309

These have been marked deprecated in the comments for some time,
(since f340f773) but the warnings
were never enabled.

A warning suppression is enabled for Abseil code so that when we
declare types in our code, we don't get a warning.

PiperOrigin-RevId: 532891102
Change-Id: Ife0c5696a061ea44769e02869e4e3d1196e86f9d

PiperOrigin-RevId: 532553508
Change-Id: I813841ff3e5085b64c9b02ca41897bf7f6a8570e

PiperOrigin-RevId: 532199109
Change-Id: I5a2a96b9c8b52feb0107d912b0011911fc1f0f4c

absl::RegisterSymbolizer() has been deprecated for 5 years.
It is being removed following our compatibility policy.
<https://abseil.io/about/compatibility>
PiperOrigin-RevId: 532174866
Change-Id: Id5c3b86698e389099d3d707c4e57f30f1f155d2e

PiperOrigin-RevId: 532174747
Change-Id: I39dc6d5c369e8bfbdde5c826836e42f5baa69dc5

This is a heavily modified version of
https://github.com/abseil/abseil-cpp/pull/1445,
which adds some missing test libraries to the test DLL.

Unlike #1445, this change moves several global variables out of
headers that did not need to be in headers.

For instance, cord_btree_exhaustive_validation was a global
defined/declared in cord_internal, but only used in cord_rep_btree
and its test.

cordz_handle defined a queue in its header even though it wasn't needed,
which also led to ODR problems.

The Spinlock used in CordzHandle is replaced with a Mutex. This was
originally a Mutex, but Chromium asked us to change it to a Spinlock
to avoid a static initializer. After this change, the static
initializer is no longer an issue.

#1407

PiperOrigin-RevId: 531516991
Change-Id: I0e431a193698b20ba03fac6e414c26f153f330a7

PiperOrigin-RevId: 531301442
Change-Id: Ib5a67f827bf89a66a0a8d24d3191f278566af6c8