--
5804cc13b413412988248835459b90cd15ec43d9 by Abseil Team <absl-team@google.com>:
Mark raw_hash_set::clear() with the ABSL_ATTRIBUTE_REINITIALIZES attribute.
This prevents false positives in the clang-tidy check bugprone-use-after-move;
it allows reset() to be called on a moved-from raw_hash_set without any
warnings, and the raw_hash_set will thereafter be regarded as initialized again.
PiperOrigin-RevId: 230717196
--
ff5961a5600ae19b69a9cba6912126cdf2858f38 by CJ Johnson <johnsoncj@google.com>:
Swaps DisableIfIntegral<> for EnableIfInputIterator<> for Iterator member functions of InlinedVector
PiperOrigin-RevId: 230559521
--
3f9754ccbeecbd40f235c6f2465279e045ff51d9 by Derek Mauro <dmauro@google.com>:
Import GitHub PR 254
https://github.com/abseil/abseil-cpp/pull/254
Fixes warnings from -Wclass-memaccess (base_internal::ThreadIdentity?
with no trivial copy-assignment).
PiperOrigin-RevId: 230536048
--
8af03a654ce9a4a7f55384bc7eb1ed64878ac2ec by Chris Kennelly <ckennelly@google.com>:
absl: cap SpinLock backoff to 4ms
The current backoff logic has 3 problems:
1. It can produce too high values (up to 256ms), which can negatively
affect tail latency. The value was chosen long time ago and now it's
a good idea to reconsider it.
2. It does not have low bound, so on any iteration it can produce
a very small value that will lead to unnecessary cpu consumption.
3. It does not increase low bound with the number of iterations.
So if the SpinLock is actually somehow locked for a very prolonged time,
a waiter can still wake periodically.
Rework the logic to solve these problems.
Add lower bound of 128us, no code should rely on absence of episodic
delays in this range as they can occur everywhere.
Lower upper bound to 4ms. A thread sleeping for 4ms does not consume
significant cpu time (see below).
Grow lower bound with the number of iterations.
This is cpu consumption of a process doing usleep(x) in a loop
(sampled with ps):
64us -> 4.0%
128us -> 2.7%
256us -> 3.5%
512us -> 2.8%
1024us -> 1.6%
2048us -> 0.6%
4096us -> 0.3%
8192us -> 0.0%
Few millisecond sleeps do not consume significant time.
PiperOrigin-RevId: 230534015
--
37ebba92289ca556cb2412cd8b3cb4c1ead3def7 by Samuel Benzaquen <sbenza@google.com>:
Add override and dispose hooks to the hashtable sampler.
PiperOrigin-RevId: 230353438
--
89c8f90175233ce9964eb3412df04e8a3cff0c0f by Andy Getzendanner <durandal@google.com>:
Fix a comment typo.
PiperOrigin-RevId: 229986838
GitOrigin-RevId: 5804cc13b413412988248835459b90cd15ec43d9
Change-Id: Iedb5e2cc9c0b924635c1c87b537780ab6b5b899f
--
5f1cf6547231f1b1daad6d1b785df6b0b999b3c9 by Samuel Benzaquen <sbenza@google.com>:
Fix uninitialized member in the `iterator` class by using a union of the two
possible states of the iterator.
This silences a Wuninitialized warning in gcc>=7.
PiperOrigin-RevId: 228175148
--
98b4e3204c0ec3cfd4cb037e24d443ea4b63fc84 by CJ Johnson <johnsoncj@google.com>:
Factors out the implementation of InlinedVector::swap(...) into a private member function
PiperOrigin-RevId: 228173383
--
f1432ad3a8b05285c6d55bc4754cfae765485b7f by Abseil Team <absl-team@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 227891984
--
03fc00c7a4efc6000e6d9125cb2e252bffda76fe by Andy Getzendanner <durandal@google.com>:
Add a missing linebreak to a comment and markdownify two unordered lists.
PiperOrigin-RevId: 227861389
--
0d66c9afba4fc9aa52e61d9fb410e165018a7b48 by Abseil Team <absl-team@google.com>:
Add an API to register a new source for the cycle clock.
PiperOrigin-RevId: 227779218
--
14d3f9b70c8818b8541e5fb2f6ca4c59d479de31 by Andy Getzendanner <durandal@google.com>:
Correct a typo in a stripping marker.
PiperOrigin-RevId: 227750014
--
59df88740f4e315beb57a8772f8bcf7879440c74 by Matt Kulukundis <kfm@google.com>:
Switch thread local handling to be more cross platform
PiperOrigin-RevId: 227695133
--
75deed5bfcb5c42534e933f104aa7d94e11e348d by Abseil Team <absl-team@google.com>:
Rollback workaround toolchain bug for incorrect handling of thread_local in inline
functions
PiperOrigin-RevId: 227689133
--
54994bf0afec026e6e0e7a199df0bbb4b7d9a4aa by Derek Mauro <dmauro@google.com>:
Add -pthread to linkopts where it actually belongs, on the library
that uses it.
Fixes https://github.com/abseil/abseil-cpp/issues/240.
PiperOrigin-RevId: 227612492
--
893875f3536b7e0a1bad993aa6b2e083abb3b25a by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 227582833
--
506c9b8e9002ca3389c7040473b68d4cbf94bdcc by Matt Kulukundis <kfm@google.com>:
Workaround toolchain bug for incorrect handling of thread_local in inline
functions
PiperOrigin-RevId: 227561449
--
29ee90d96dfe3114cf93f9bb92ea0cc9e768a407 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 227054634
GitOrigin-RevId: 5f1cf6547231f1b1daad6d1b785df6b0b999b3c9
Change-Id: Ibc90566d92ee6e0ad7e150f513ec7f5d22ec0a94
--
cd076f55c1fa600131f6dda392533dfe61679fc0 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 224008762
--
e05f62b01286d51044ff86ec6ef565749b9faf82 by Abseil Team <absl-team@google.com>:
Create a pow10() test helper function to compute guaranteed-precise double values of 10^x. Not all standard libraries ship bit-accurate pow() functions, causing tests to fail that rely on expected values generated by it.
PiperOrigin-RevId: 223883762
--
fd88e5e3f7ab80f7f5df9fd1488cd58b4573be69 by Abseil Team <absl-team@google.com>:
Remove some absl:: qualifications to work around inline namespace bugs on MSVC 2015.
PiperOrigin-RevId: 223869642
--
6276cfff969d596edd36a2bbaba65ee045808903 by Abseil Team <absl-team@google.com>:
Update absl/memory/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)
PiperOrigin-RevId: 223854224
--
359de9afc7a34c975fd3e0cbc52afd96637d97bd by Chris Kennelly <ckennelly@google.com>:
Mark spinlock_benchmark_common as alwayslink = 1.
PiperOrigin-RevId: 223844536
--
450cd8cbe2789a6d54ed1eb87170259bb334f8b9 by Abseil Team <absl-team@google.com>:
Support .* (pointer-to-member dereference) expressions in demangle.cc.
PiperOrigin-RevId: 223826797
--
772ca92179c3634f3e31a80bbc272ed8022e3572 by Abseil Team <absl-team@google.com>:
Fix misspellings in absl::variant comments and replace a ' with a `.
PiperOrigin-RevId: 223807911
--
35dcdc2fbf299d195658aac101887f6dcad1de2f by Abseil Team <absl-team@google.com>:
Bug fix in CMakeLists.txt file (SRCS --> HDRS).
The compressed_tuple header-only library is being defined
with the SRCS parameter instead of the HDRS parameter and
this has been observed to cause some builds on some platforms
to attempt to create a static library from it which fails
since there are no .cc sources.
PiperOrigin-RevId: 223805367
--
4a57a3d2045bb137c0c97958e45ce425190b8d3e by Chris Kennelly <ckennelly@google.com>:
Add test that absl::make_unique value initializes memory.
PiperOrigin-RevId: 223801819
--
dfe8289d7f4dcc6bb568a26aaf192a89e896bdfd by Chris Kennelly <ckennelly@google.com>:
SpinLock: Use exchange to avoid missing wakeups.
The default fast path for SpinLock::Unlock does not use an atomic. If the
SpinLock becomes contended while we are unlocking between lockword_.load and
lockword_.store, we will fail to wake up the new waiter. This can cause
unexpected latency spikes.
PiperOrigin-RevId: 223800369
--
9b9d35df786482f0016f77dd31691eff81503d23 by Abseil Team <absl-team@google.com>:
Update absl/hash/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)
PiperOrigin-RevId: 223755819
--
c2014e2704b87e7cdce2d2a0287c7e2397752296 by Abseil Team <absl-team@google.com>:
Update absl/debugging/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)
PiperOrigin-RevId: 223751986
--
d83a4e09126400e3fd80645cb03ee558f532271e by Derek Mauro <dmauro@google.com>:
Cleanup synchronization benchmarks.
PiperOrigin-RevId: 223589416
--
fad140b473586531b5b12843f942ec27dfcf5e93 by CJ Johnson <johnsoncj@google.com>:
Makes unifies the order of forward_iterator and input_iterator overloads
PiperOrigin-RevId: 223580660
--
6cd7c96faa7cc5f79f574e35a1b13837ef187d05 by Abseil Team <absl-team@google.com>:
Internal Change.
PiperOrigin-RevId: 223561629
--
bd2e545356b0f548af0e3c14bb2f7f0e712e49d0 by Shaindel Schwartz <shaindel@google.com>:
Remove misleading comments. try_emplace() does not exist for the hash_set containers.
PiperOrigin-RevId: 223543089
--
0cd380a53b587eb7aacc4003a4a3bbb6c78d7c10 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 223512551
--
7156dfee599cb72e9adddfe0e6ae07a95ddf10bb by Greg Miller <jgm@google.com>:
Fixes UB that would result from constructing, multiplying, or dividing a
Duration with a double "NaN" value. This CL changes the absl::Duration
*implementation* to return an InfiniteDuration value that has the same sign as
the given NaN.
PiperOrigin-RevId: 223407499
--
196b7d18609958267951882baf7f9429e49bcafa by CJ Johnson <johnsoncj@google.com>:
Addresses NVCC+MSVC compilation bug where `inlined_capacity()` was not considered valid in constexpr
PiperOrigin-RevId: 223397718
GitOrigin-RevId: cd076f55c1fa600131f6dda392533dfe61679fc0
Change-Id: I5423ca6470f661a7c6f73aa8fee49990446f157f
--
da04b8cd21f6225d71397471474d34a77df0efd6 by Jon Cohen <cohenjon@google.com>:
Don't use std::any, std::optional, std::variant, and friends on MacOS versions older than 10.14.
Although Xcode 10 includes those headers and makes the types available to use, according to https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes, on MacOS 10.13 and earlier use of any functions (std::get, for example) results in an error message to upgrade to MacOS 10.14.
This fixes https://github.com/abseil/abseil-cpp/issues/207. See that issue for more information on the error generated.
PiperOrigin-RevId: 221844618
--
1d99f77b4c60c5b0d7984f46e8ed63a3f969c635 by Jon Cohen <cohenjon@google.com>:
raw_hash_set_test is still flaky under gcc 4.8. Since we now have the probe_test, we don't need the PerfectRatio tests. Just remove them.
PiperOrigin-RevId: 221843042
--
135cbb2a5d90963256518b3b59fe6710815e5dfa by Abseil Team <absl-team@google.com>:
Update absl/algorithm/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)
PiperOrigin-RevId: 221828348
--
1a5abde4f17f998ae89d87155d59f982a70202d8 by Jon Cohen <cohenjon@google.com>:
Internal change
PiperOrigin-RevId: 221708245
--
e03e031d4de39275989f695c768b0940cce1ff16 by Matt Armstrong <marmstrong@google.com>:
Log to FATAL in throw_delegate.h
ABSL_RAW_LOG(FATAL, ...) is guaranteed to abort.
Previously, the code was logging to ERROR and
calling abort() explicitly, which defeated any
integration with absl::raw_logging_internal::AbortHook().
These changes are limited to Abseil internal APIs.
PiperOrigin-RevId: 221696513
--
d13691523a3f9a5367fd1194cf9604bf4a969029 by Shahriar Rouf <nafi@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 221694877
--
f4044c56d44ba0ac2a9f218ed55f1b1f9e985eae by Abseil Team <absl-team@google.com>:
Update absl/base/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)
PiperOrigin-RevId: 221676669
GitOrigin-RevId: da04b8cd21f6225d71397471474d34a77df0efd6
Change-Id: If6621e10d096a39b6a056a072c2727a0df0b0620
--
5f1ab09522226336830d9ea6ef7276d37f536ac5 by Abseil Team <absl-team@google.com>:
Clarify the documentation of ABSL_MUST_USE_RESULT.
PiperOrigin-RevId: 221663609
--
af4c8359a20d56369fd1dce318220cf3be03ca66 by Greg Falcon <gfalcon@google.com>:
Internal change
PiperOrigin-RevId: 221538448
--
487cd09bd1942bf607080deeae38fee6ce66f294 by Eric Fiselier <ericwf@google.com>:
Work around emscripten bugs and missing features in absl/time:time_test.
The emscripten toolchain has a couple of issues that cause time_test
to fail. Specifically:
1) emscripten doesn't support signals.
2) The javascript implementation of strftime/strptime use different expansions
of '%c' that mean it doesn't round-trip.
PiperOrigin-RevId: 221523701
--
5823652e6a200b97b07334bc47128dfac40e20fc by Xiaoyi Zhang <zhangxy@google.com>:
Fix MSVC compiler warning by explicitly casting to char.
Currently our MSVC build breaks with the following error:
raw_hash_set.h(406): warning C4309: 'argument': truncation of constant value
PiperOrigin-RevId: 221492585
--
c5806358320711a5efbe5c523df13e14ab53a17d by Greg Falcon <gfalcon@google.com>:
Replace calls to getpagesize() with the more portable sysconf(_SC_PAGESIZE); the latter is in POSIX 1.0 and is called out in the Linux `getpagesize` man page as a more portable spelling.
PiperOrigin-RevId: 221492471
--
19ffe82851072229bb7ce73f754ffe4c18e8c575 by Abseil Team <absl-team@google.com>:
Fix -Wundef error in absl/hash/internal/hash.h.
PiperOrigin-RevId: 221444120
--
b30f3d0a848563b6e4ec33f3dc085831dfabb748 by Jon Cohen <cohenjon@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 221339736
GitOrigin-RevId: 5f1ab09522226336830d9ea6ef7276d37f536ac5
Change-Id: I96223d522d98bf6616dea88eb047c2d536eeddd0
--
178e7a9a76fc8fcd6df6335b59139cbe644a16b9 by Jon Cohen <cohenjon@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 220523164
--
59ef14fe7034a3148f1e9cef1f128b8ca264b444 by Jon Cohen <cohenjon@google.com>:
Don't assume how much std::vector's constructors allocate in InlinedVector's test for scoped_allocator_adaptor support.
PiperOrigin-RevId: 220464683
--
6f8351be43a44a8f10bf20612b2cc744a4a911c7 by Jon Cohen <cohenjon@google.com>:
Add VS Code and some Bazel output files to absl/.gitignore
PiperOrigin-RevId: 220464362
--
43fac22f8af6b6ed55309a784a9d25d837393d0e by Abseil Team <absl-team@google.com>:
absl: fix SpinLock::EncodeWaitCycles
If a thread has ever observed or set kSpinLockSleeper, it must
never leave 0 in kWaitTimeMask because at this point it is
expected to wake subsequent threads. Current calculations in
EncodeWaitCycles can result in 0 in kWaitTimeMask and lead to
missed wakeups. This is mostly theoretical today, because
the futex call needs to finish within 128 cycles (futex can
return immediately without waiting, but 128 cycles still
look too low for this). But this can well fire in future
if we bump granularity and/or threshold for recording contention.
Use kSpinLockSleeper instead of 0.
PiperOrigin-RevId: 220463123
--
def9b7e3d45c99d68cc52a4429256116d7f421f2 by Abseil Team <absl-team@google.com>:
absl: optimize SpinLock::SlowLock
Currently we record contention even after the first initial spin.
This leads to several performance issues:
1. If we succeed in acquiring the lock after the initial spin,
overall wait time can be within tens/hundreds of nanoseconds.
Recording such low wait time looks completely unnecessary and excessive.
From some point of view this is not even a wait, because we did not sleep.
And, for example, Mutex does not record contention in this case.
In majority of cases the lock should be acquired exactly during the initial
spin, yet we still go through full overhead of submitting contention.
2. Whenever a thread submits contention it also calls FUTEX_WAKE
(there is no way to understand if it's necessary or not when wait value
is stored in the lock). So if there are just 2 threads and a brief
contention, the second thread will still call FUTEX_WAKE which
is completely unnecessary overhead.
Don't record contention after the initial spin wait.
FWIW this also removes 2 CycleClock::Now calls and EncodeWaitCycles
from the common hot path.
PiperOrigin-RevId: 220379972
--
75b0c0cb214de904ea622f81ec3f4eabdc8695b0 by Derek Mauro <dmauro@google.com>:
Supress MSVC warnings in raw_hash_set's use of TrailingZeros and LeadingZeros.
https://github.com/abseil/abseil-cpp/issues/208
PiperOrigin-RevId: 220372204
GitOrigin-RevId: 178e7a9a76fc8fcd6df6335b59139cbe644a16b9
Change-Id: I3a66af4e050810a3274e45d4e055b2aa19ffba1b
--
ee19e203eca970ff88e8f25ce4e19c32e143b988 by Jon Cohen <cohenjon@google.com>:
Exception safety testing no longer uses absl::optional
PiperOrigin-RevId: 220336204
--
460666eb0b316a8b4aeedc589644d53b05251bd1 by Derek Mauro <dmauro@google.com>:
Rework SwissTable SSE2 support
- Use SSE2 on MSVC when available
https://github.com/abseil/abseil-cpp/issues/210
- Emulate _mm_cmpgt_epi8 with other SSE2 instructions when using
-funsigned-char under GCC
https://github.com/abseil/abseil-cpp/issues/209
PiperOrigin-RevId: 220312351
--
1f4318ecedf8d539b7b698eb803d613ad6b69278 by Abseil Team <absl-team@google.com>:
Change CollectPerfectRatios to use 10 trials to smooth out the outliers in the
sample.
PiperOrigin-RevId: 220286579
--
6755abc2673553a7f578bb29c6e9ca8d991bc9c8 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 220274307
--
8645b6187329ebf0aaf3c2de2888ba44466cd879 by Abseil Team <absl-team@google.com>:
* #endif for a header guard should reference the guard macro in a comment
PiperOrigin-RevId: 220206868
--
3987a7ad11319230910931cd2468b60b3fd1b85c by Gennadiy Civil <misterg@google.com>:
Internal Change
PiperOrigin-RevId: 220136674
--
cc908c1db2ee0d4523dc813e33f600583bb986c5 by Abseil Team <absl-team@google.com>:
absl: fix backoff logic in SpinLockWait
There are 3 bugs in loop variable handling:
1. It starts with 0, but AbslInternalSpinLockDelay ignores loop == 0.
So it does not actually wait when it should.
2. loop is incremented after successful state changes,
but it should not (why would be increase backoff delay after that?).
3. loop is incremented after CAS failures,
but it should not (why would be increase backoff delay after that?).
Use the same handling of loop as used in SpinLock.
PiperOrigin-RevId: 220136079
--
a0a1c6ef5910ebd28e07215d7df03cc0da0b3eed by Abseil Team <absl-team@google.com>:
absl: relax unnecessarily strong memory ordering in SpinLock::SlowLock
We don't need to acquire visibility over anything when setting kSpinLockSleeper.
Replace the confusing and unnecessarily strong memory order with relaxed.
PiperOrigin-RevId: 220023380
--
c50858b51af28b9fca1a62616324f85f3e84ea74 by Tom Manshreck <shreck@google.com>:
Update comments in flat_hash_map, node_hash_{set, map} and the containers developer guide
PiperOrigin-RevId: 219938692
--
e87b7d1a5f61e165b1c44d3b16d8d967197cdfce by CJ Johnson <johnsoncj@google.com>:
Rearranges the public methods of InlinedVector and cleans up the comments
PiperOrigin-RevId: 219896257
--
f3234c466f792e0fc4bfd21fc7919dba5e679375 by CJ Johnson <johnsoncj@google.com>:
Adds branch prediction to exceptional early exit cases of inlined vector's API
PiperOrigin-RevId: 219887173
--
4dfccf1a81ca0425912d3da25a8470f78c532ce4 by CJ Johnson <johnsoncj@google.com>:
Fixes the InlinedVector public interface to use the allocator type references instead of assuming the type
Also cleans up some cruft in formatting and comments
PiperOrigin-RevId: 219878876
--
4bb6a2b892abb10bd6a424db7e94ed8640802470 by Tom Manshreck <shreck@google.com>:
Add comments on constructor and assignment operator support to flat_hash_set
PiperOrigin-RevId: 219825338
--
c23f973e2f7f4feea0da36bf8a9c3f8a8954bb74 by Abseil Team <absl-team@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 219823847
GitOrigin-RevId: ee19e203eca970ff88e8f25ce4e19c32e143b988
Change-Id: I288c927ca481dc57340420dbb4c278a05cf15e83
--
ba4dd47492748bd630462eb68b7959037fc6a11a by Abseil Team <absl-team@google.com>:
Work around nvcc 9.0 compiler bug for open-source Tensorflow build.
With the current implementation, when I (unintentionally and transitively)
include absl/types/optional.h in a CUDA compilation unit, I get the following
nvcc error message:
INFO: From Compiling tensorflow/core/kernels/crop_and_resize_op_gpu.cu.cc:
external/com_google_absl/absl/types/optional.h: In member function 'void absl::optional_internal::optional_data_dtor_base<T, <anonymous> >::destruct()':
external/com_google_absl/absl/types/optional.h:185:50: error: '__T0' was not declared in this scope
data_.~T();
I've also seen similar compilation failures online, for flat_hash_map:
https://devtalk.nvidia.com/default/topic/1042599/nvcc-preprocessor-bug-causes-compilation-failure/
The bug is always around unnamed template parameters. Therefore, the workaround is to make them named.
PiperOrigin-RevId: 219208288
--
dad2f40cb2e8d5017660985ef6fb57f3c3cdcc80 by CJ Johnson <johnsoncj@google.com>:
Adds internal macros for catching and throwing unknown exception types
PiperOrigin-RevId: 219207362
--
0a9840328d2d86e8420b853435fdbf1f7a19d931 by Abseil Team <absl-team@google.com>:
Fix typo in mutex.h comments.
PiperOrigin-RevId: 219199397
--
0d576dc7597564210bfdf91518075064756f0bf4 by Matt Calabrese <calabrese@google.com>:
Internal change.
PiperOrigin-RevId: 219185475
--
66be156095571959fb19a76da8ad0b53ec37658e by Abseil Team <absl-team@google.com>:
Fix alignment conformance for VS 2017 >= 15.8 (fix#193)
PiperOrigin-RevId: 219129894
--
a6e1825a12587945f8194677ccfdcaba6f7aad1d by Abseil Team <absl-team@google.com>:
Reapply PR #173
PiperOrigin-RevId: 219129361
--
cf72ade4881b25acc6ccaea468f69793a0fdce32 by Abseil Team <absl-team@google.com>:
Update .gitignore
PiperOrigin-RevId: 219127495
--
0537490c6348a2cb489abe15638928ac5aa6982a by Jon Cohen <cohenjon@google.com>:
Small refactor and reformat of error messages from the exception safety test framework.
PiperOrigin-RevId: 218927773
--
4c556ca45fa25698ad12002a00c713aeceefab73 by CJ Johnson <johnsoncj@google.com>:
Updates the inlined vector swap tests to check for number of moves that took place if available
PiperOrigin-RevId: 218900777
--
dcbfda0021a1e6dfa9586986b1269c06ec394053 by Mark Barolak <mbar@google.com>:
Add parens around calls to std::numeric_limits<>::min and
std::numeric_limits<>::max to prevent compilation errors on Windows platforms
where min and max are defined as macros.
PiperOrigin-RevId: 218888700
GitOrigin-RevId: ba4dd47492748bd630462eb68b7959037fc6a11a
Change-Id: I0e393958eb8cb501b85f6114979f6d4d86ed996c
--
441d1aa02483cdc510eb2fef012b31384fd8e3a6 by Eric Fiselier <ericwf@google.com>:
Fix str_format with non-POSIX libc implementations.
PiperOrigin-RevId: 218441122
--
da6190130e74222af6eb161a5593364341370370 by Jon Cohen <cohenjon@google.com>:
Refactor ExceptionSafetyTester::Test in order to remove the levels of indirection related to unpacking tuples.
PiperOrigin-RevId: 218403355
GitOrigin-RevId: 441d1aa02483cdc510eb2fef012b31384fd8e3a6
Change-Id: I6f6b978eb96fe261e8ee41ecdce185e5356a601d
--
1c1d6e2404dfc6caa022b335df5acdac6da50fe1 by Derek Mauro <dmauro@google.com>:
Fix the internal namespacing in unaligned_access.h
PiperOrigin-RevId: 215434506
--
17d4400aebf025a230690fc1c7a968ef8d85bbba by Eric Fiselier <ericwf@google.com>:
gtest depends on the GCC extension allowing variadic macros
to be passed a empty parameter pack for ..., but LLVM diagnoses
this as a GNU extension.
This patch suppresses the warning when building the absl tests.
PiperOrigin-RevId: 215426161
--
f2c49dde23a9f445b9de963f1bbe840ebb568b30 by Eric Fiselier <ericwf@google.com>:
Use EXPECT_DEATH_IF_SUPPORTED instead of EXPECT_DEATH.
This avoids breaking the test when gtest doesn't support
death tests.
PiperOrigin-RevId: 215423849
--
cd687c1e121709603f4fc3726b534f6a9c52cc89 by Eric Fiselier <ericwf@google.com>:
Disable LLVM's -Wmissing-variable-declarations in tests.
GCC's configuration already disables this via -Wno-missing-declarations,
this change makes LLVM do the same.
The warning would otherwise flag most tests which use ABSL_FLAG.
PiperOrigin-RevId: 215407429
--
d14098824c84e3a8c8f6fb920e0335fb48fe2010 by Eric Fiselier <ericwf@google.com>:
Fix local variable shadowing in city hash implementation.
PiperOrigin-RevId: 215407249
--
4b5e140ba743f0d231790a26c49083abb4329e2c by Abseil Team <absl-team@google.com>:
Make raw_hash_set::reserve 2X fast when reserve doesn't do any allocation.
Make raw_hash_set::reserve ~1% faster when reserve does some (128~4k) allocation.
PiperOrigin-RevId: 215348727
--
461161e65e04b801480aa117af2534c594654ccf by Eric Fiselier <ericwf@google.com>:
Internal change
PiperOrigin-RevId: 215272283
--
50413ae31ad3d3a177257416acd8ede47a17bff2 by Eric Fiselier <ericwf@google.com>:
Internal Change
PiperOrigin-RevId: 215233183
--
477be54c43d61019a8fe4e190e340eb52737d383 by Abseil Team <absl-team@google.com>:
Clarify misleading comment on ABSL_ATTRIBUTE_UNUSED
PiperOrigin-RevId: 215185496
--
2cafa2b5287507d3a946682aee9ab13af6d471c9 by Matt Kulukundis <kfm@google.com>:
Add support for absl::Hash to various absl in types.
PiperOrigin-RevId: 215039569
--
082248901991aa3d29be0ea3689c7f213cf0fd83 by Derek Mauro <dmauro@google.com>:
Remove an instance of HAS_GLOBAL_STRING from hash_function_defaults.h
PiperOrigin-RevId: 214989094
--
b929f61907f0786a6133e3a9d7287e339c0a0acb by Derek Mauro <dmauro@google.com>:
Internal import of Github #174
Fix code snippet in comment
https://github.com/abseil/abseil-cpp/pull/174
PiperOrigin-RevId: 214958849
--
f2c5e829eca11c352e121f56eefbf87083305023 by Derek Mauro <dmauro@google.com>:
Internal import of GitHub #173
Fix CMake build for absl::container.
https://github.com/abseil/abseil-cpp/pull/173
PiperOrigin-RevId: 214957796
--
d704f860f9fddafb99e34e6c5032e49f73874e10 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 214828181
GitOrigin-RevId: 1c1d6e2404dfc6caa022b335df5acdac6da50fe1
Change-Id: I551de2b1ba0cbaf6856cd5959358cf6651179dea
--
eca34da4ccb7bb6a580f1364dff9ca053418fa3b by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 214305433
--
35393bdd21a87c4286f945fd34dda93afc4e0cd6 by Abseil Team <absl-team@google.com>:
Move some implementation details of string_view around to facilitate compiling on NVCC.
Abseil does not officially support NVCC as a reminder.
PiperOrigin-RevId: 214184876
--
61846cab9ab9476a4676ecade7173f68978cd038 by Jorg Brown <jorg@google.com>:
Move the initialization values for constants back to their declaration.
PiperOrigin-RevId: 214135927
--
7ac7df6c5f78f2faf419268c04618b936cb26065 by Abseil Team <absl-team@google.com>:
Performance improvements on format parser.
PiperOrigin-RevId: 214032366
--
90b4c0cf20e9feaa257a7ece40adaf7db40a60a7 by Xiaoyi Zhang <zhangxy@google.com>:
Add static_assert check to absl::visit to make sure all overloads of the visitor return the same type, as required by the C++ standard.
PiperOrigin-RevId: 213677001
--
787995342101b4c181291cde9ecea3048536e4bd by Abseil Team <absl-team@google.com>:
Update comment to indicate finite durations are less than InfiniteDuration.
PiperOrigin-RevId: 213660328
--
d78f0dce7cc31218807e96d93b9e8513b6c80b24 by Jon Cohen <cohenjon@google.com>:
s/invariant/contract in the exceptions safety testing framework. This is a better term as these can be type invariants or function post conditions. They also are very similar ground as to what is covered by c++20 Contracts (and could even be replaced by them.
PiperOrigin-RevId: 213631019
--
0b3ff1a640de9a7391a6c233568802cf86245b0e by Abseil Team <absl-team@google.com>:
Add noinline attribute for GetStackTrace/GetStackFrames/... so the skipped frames will not change because of inlining difference.
PiperOrigin-RevId: 213009637
GitOrigin-RevId: eca34da4ccb7bb6a580f1364dff9ca053418fa3b
Change-Id: Iff1022fd24e440fcbdf3c4ab2a915ca8954daa31
--
821196cfb2a3b943ffdc4c9e75daec92d7ffb28b by Abseil Team <absl-team@google.com>:
Performance improvements
PiperOrigin-RevId: 212668992
--
704858e2e767016bad27d53eec01d9d48e546b23 by Abseil Team <absl-team@google.com>:
Low-level Portability enchancements for Abseil Mutex on WebAssembly.
Emscripten Pthreads do not use signals, so remove use of pthread_sigmask or
other async-signal-safe related handling code.
PiperOrigin-RevId: 212527958
--
be3e38cb4d493b755132d20c8c2d1a51e45d5449 by Jon Cohen <cohenjon@google.com>:
Internal change.
PiperOrigin-RevId: 212523797
GitOrigin-RevId: 821196cfb2a3b943ffdc4c9e75daec92d7ffb28b
Change-Id: I5694e23e4e09364a15dd6fc4e2e3f15e38835687
--
74c1330e29f1501f2738258faf9ec4564395c90a by Gennadiy Civil <misterg@google.com>:
Merging https://github.com/abseil/abseil-cpp/pull/166
PiperOrigin-RevId: 212487256
--
4ac236574ff8fb3cc1125505292b0bd8c8192da9 by Abseil Team <absl-team@google.com>:
Allow c_move to take rvalue containers.
PiperOrigin-RevId: 212458618
--
ce94e23984870db666d4c91623ae45b3c60b5b61 by Matt Armstrong <marmstrong@google.com>:
Internal change.
PiperOrigin-RevId: 212153041
--
7d88d286821c5839934756dd63a704ed162c49cb by Chris Kennelly <ckennelly@google.com>:
Internal change
PiperOrigin-RevId: 211982309
--
ddae814b3f609948c20551ea3d80bf51b973f480 by Abseil Team <absl-team@google.com>:
Remove unused argument from InlinedVector's AllocatorAndTag
This is not part of InlinedVector's public interface.
PiperOrigin-RevId: 211973017
--
051fbfd81648a8da66c62c6603af63038d709c15 by Abseil Team <absl-team@google.com>:
Minor performance fix
PiperOrigin-RevId: 211820453
--
c205cb2add7400bc8caf2131cb700eea560b7dbf by Laramie Leavitt <lar@google.com>:
Make absl::Span a tiny bit more consistent.
Add constexper to equivalent absl::Span members as described by
http://open-std.org/JTC1/SC22/WG21/docs/papers/2018/p0122r7.pdf
* Span constructor use consistently delegate to Span(ptr, length)
* Mark more member methods as constexpr.
* Use data() and size() consistently in member methods.
PiperOrigin-RevId: 211707244
--
55500c9e941f2f58f4a95c121f32772408866eee by Derek Mauro <dmauro@google.com>:
Stop catching polymorphic exception types by value.
GCC 8 emits a warning for this.
PiperOrigin-RevId: 211684466
GitOrigin-RevId: 74c1330e29f1501f2738258faf9ec4564395c90a
Change-Id: Iceab4a5b30ee35d82ef494830262ad29c028cb0a
--
2dcf3ec79f961d2962cdad33ac4bfbcb14126dad by Abseil Team <absl-team@google.com>:
Consolidate implementations of CountLeadingZeros and add new ones for
CountTrailingZeros.
Internal APIs only.
PiperOrigin-RevId: 209961247
--
4f3ac87c6928dab26faff962bb18aade9383f184 by Jorg Brown <jorg@google.com>:
Fix absl::CUnescape not to write to const_cast<char*>(str->data()), which does the wrong thing if the string type is copy-on-write
PiperOrigin-RevId: 209957656
--
c5103067be19dc88a4c32e5306154e5e3bba4673 by Tom Manshreck <shreck@google.com>:
Update comments in time library header files.
PiperOrigin-RevId: 209829588
--
fe36f9b6150243d2ac88e2a892d84c565c18cd2f by Abseil Team <absl-team@google.com>:
Clarifying the sample use of absl::LoadTimeZone function in the documentation.
PiperOrigin-RevId: 209782218
GitOrigin-RevId: 2dcf3ec79f961d2962cdad33ac4bfbcb14126dad
Change-Id: I3e2f87a8c543599b81eada58409a9bddc0b51ab8
--
f4bb8afa9376b4120f56f3beff7b07260da4a5c2 by CJ Johnson <johnsoncj@google.com>:
Add user to Github list
PiperOrigin-RevId: 209630262
GitOrigin-RevId: f4bb8afa9376b4120f56f3beff7b07260da4a5c2
Change-Id: I3fedf35011d805ee4a20b92e073b43523b47d15b
--
36d990031b4ae8e2debaccca63ff41829383a7d2 by Derek Mauro <dmauro@google.com>:
Rename FailureSignalHandler to AbslFailureSignalHandler so that we
don't confuse poor souls.
PiperOrigin-RevId: 207539530
--
0ced19ef8e0e0887f9809ffb88c5ef5f8746a6aa by Abseil Team <absl-team@google.com>:
Minor changes to support WebAssembly.
PiperOrigin-RevId: 207286743
GitOrigin-RevId: 36d990031b4ae8e2debaccca63ff41829383a7d2
Change-Id: I6b86713e96f5c32b595171594e456e38c898e601
--
60bc1e62580e0ff352a92c785f29550c2000447d by Xiaoyi Zhang <zhangxy@google.com>:
Import Github PR https://github.com/abseil/abseil-cpp/pull/143.
absl/synchronization/internal/kernel_timeout.h uses INFINITE macro that comes from windows.h that is included by winsock2.h that is included by absl/time/time.h. This internal header will be included by public header. It should not depend on windows.h.
PiperOrigin-RevId: 205109009
--
1617f0a333a8030e4e4c0bc1eef71f4a5fe9874d by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 205101804
--
8dce298b8c96c12c423943a366a4d92a554366c4 by Chris Kennelly <ckennelly@google.com>:
Define UNALIGNED_LOAD/STORE macros for UNDEFINED_BEHAVIOR_SANITIZER.
When using UBSan in trap mode (that is, without the ubsan runtime library), the
x86 macros can cause alignment errors as they assume unaligned loads/stores are
permitted. The macros defined in the presence of
{ADDRESS,THREAD,MEMORY}_SANITIZER require the runtime library.
PiperOrigin-RevId: 205096794
GitOrigin-RevId: 60bc1e62580e0ff352a92c785f29550c2000447d
Change-Id: I65a6cc86a711796c9d3a605310d67795b9f76ce9
--
ffe43f972f956e3f9a8fb7b68993d243ba8f79fb by Abseil Team <absl-team@google.com>:
Replace usage of soon-to-be-deprecated http_archive rule with Skylark equivalent
https://github.com/abseil/abseil-cpp/pull/138
PiperOrigin-RevId: 204939972
--
24021d7aec96ed013333760fba590eba5a9ddf63 by Abseil Team <absl-team@google.com>:
Remove incorrect constraint that StrSplit only works on std::strings; rather, it works on anything string-like.
PiperOrigin-RevId: 204761431
--
ce61d3b0ac163caa1156817f3d1a997d9376a3f3 by Derek Mauro <dmauro@google.com>:
Support s390/s390x in examine_stack.cc (GitHub issue #135).
This is UNTESTED (no machine to test on).
PiperOrigin-RevId: 204756692
--
68ecab659a95d713c4342fe9e8008c4cdf6abfc1 by Derek Mauro <dmauro@google.com>:
Update WORKSPACE.bazel Gogole Test dependency, remove the unused RE2 dependency.
PiperOrigin-RevId: 204741814
--
891e185522f0934e3b48a75617be5fc859d75dbd by Derek Mauro <dmauro@google.com>:
Fix endian_test.cc on big endian platforms.
GitHub issue #135
PiperOrigin-RevId: 204738726
--
9becfa12fbb525cd97e5695b94677bd3ea3f61b0 by Abseil Team <absl-team@google.com>:
Improve error messages in absl::variant by splitting up the conditions in the valid type static_assert.
This makes it slightly easier to determine what type is causing issues.
PiperOrigin-RevId: 204508430
GitOrigin-RevId: ffe43f972f956e3f9a8fb7b68993d243ba8f79fb
Change-Id: Icc5e4e8cd1a4cea98dfbed794cd992b734812e1d
--
50154b443b21a5123c50bebcfb866581e2e5b907 by Xiaoyi Zhang <zhangxy@google.com>:
Import https://github.com/abseil/abseil-cpp/pull/144
PiperOrigin-RevId: 204482647
--
ffefb7e0f9861a24296e672a5e32bbb56051239a by Abseil Team <absl-team@google.com>:
Cast ABSL_MIN_LOG_LEVEL to absl::LogSeverity rather than casting severity to int. This allows it to be defined symbolically e.g. -DABSL_MIN_LOG_LEVEL=absl::LogSeverity::kError.
PiperOrigin-RevId: 204347589
GitOrigin-RevId: 50154b443b21a5123c50bebcfb866581e2e5b907
Change-Id: I728baa8a3ad11ca28b731cc7979238c163e9c9a4
--
898e99cae89ca4cc27f86f719148f020d521dd58 by Abseil Team <absl-team@google.com>:
Update comment.
PiperOrigin-RevId: 204323401
--
b9d14db8b8a9dfb0e1cfb5967aaa0de1c4e94c42 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 204178059
--
f3b5a667611a588aa06fea9168e997ef5cffa7ac by Abseil Team <absl-team@google.com>:
Fix a potential reinterpret_cast compile error in absl::InlinedVector
The current code will trigger a reinterpret_cast error enhanced by llvm r336738.
PiperOrigin-RevId: 204131536
--
cc87d7a8302ad4471c1a25781d6ec19c2ce1524e by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 203979040
--
bc5cae3cfc72af1d3e786d5a3b59a47e205afec9 by Gennadiy Rozental <rogeeff@google.com>:
Internal: add internal logging hooks
PiperOrigin-RevId: 203850605
--
503655c248f557f677c920078613522b010e73c8 by Derek Mauro <dmauro@google.com>:
Cleanup stacktrace_config.h
Instead of listing the platforms that aren't supported, list the ones
we do support, and fallback to stacktrace_unimplemented-inl.inc at the
end. Previously any platform that wasn't listed gets "#error Not supported yet".
GitHub issue #135
PiperOrigin-RevId: 203823079
--
cb69925c4cacc14558cf103a09f218c37f466a16 by Abseil Team <absl-team@google.com>:
Fix a minor typo in absl::variant documentation.
PiperOrigin-RevId: 203679877
--
23a0e4db10039011fa5fd879fb73d2f2bbd17301 by Abseil Team <absl-team@google.com>:
Format .bzl files with buildifier
PiperOrigin-RevId: 203461813
--
1ad02616bdb715dfdc7f1a73313e383f4ededa03 by Abseil Team <absl-team@google.com>:
Make the absl::SleepFor() tests treat any successful retry within
a 48x deadline as a total success, thereby reducing flakiness.
PiperOrigin-RevId: 203401603
--
b3dccbbc6563ea0173527076a3fff21433d48f47 by Abseil Team <absl-team@google.com>:
Replace config_setting.values{"compiler"} with config_setting.flag_values{"@bazel_tools//tools/cpp:compiler"}
Due to changes in Bazel we need to change the way "compiler" is specified in config_setting. This will not change the behavior of the config_setting itself.
PiperOrigin-RevId: 203345693
--
170f1692537460a4ba1756d34852275899c2339b by Matt Armstrong <marmstrong@google.com>:
Address test flakiness in the TimeoutTest.
The basic idea is to loop forever until the expected
scheduling delays are observed (within reasonable bounds),
and only then assert the other invariants.
PiperOrigin-RevId: 203188162
GitOrigin-RevId: 898e99cae89ca4cc27f86f719148f020d521dd58
Change-Id: Ie853ec050afa3a04c519393afe666bc03e11dc87
--
6769c6ebe79804063d68d70a5623a1475d63aeff by Alex Strelnikov <strel@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 202500218
--
c65cc4af08b8c48ca65f0816c1d2f59c7de7b0a5 by Derek Mauro <dmauro@google.com>:
Fix DirectMMap on s390x (GitHub #135).
This is *untested* because no s390x system is available.
PiperOrigin-RevId: 202484458
--
0ae7b628d7859cb3af169d007c29efd7917bb3ea by Abseil Team <absl-team@google.com>:
Changes the Holder's compile-type type decision making to a std::conditional for improved readability
PiperOrigin-RevId: 202340646
GitOrigin-RevId: 6769c6ebe79804063d68d70a5623a1475d63aeff
Change-Id: I8f9d049ee279b1b1e3381fdf7e6fe9a4ea228306
f28d30df5769bb832dec3ff36d2fcd2bcdf494a3 by Shaindel Schwartz <shaindel@google.com>:
Internal change
PiperOrigin-RevId: 201046831
--
711715a78b7e53dfaafd4d7f08a74e76db22af88 by Mark Barolak <mbar@google.com>:
Internal fix
PiperOrigin-RevId: 201043684
--
64b53edd6bf1fa48f74e7f5d33f00f80d5089147 by Shaindel Schwartz <shaindel@google.com>:
Remove extra whitespace
PiperOrigin-RevId: 201041989
--
0bdd2a0b33657b688e4a04aeba9ebba47e4dc6ca by Shaindel Schwartz <shaindel@google.com>:
Whitespace fix.
PiperOrigin-RevId: 201034413
--
3deb0ac296ef1b74c4789e114a8a8bf53253f26b by Shaindel Schwartz <shaindel@google.com>:
Scrub build tags. No functional changes.
PiperOrigin-RevId: 201032927
--
da75d0f8b73baa7e8f4e9a092bba546012ed3b71 by Alex Strelnikov <strel@google.com>:
Internal change.
PiperOrigin-RevId: 201026131
--
6815d80caa19870d0c441b6b9816c68db41393a5 by Tom Manshreck <shreck@google.com>:
Add documentation for our LTS snapshot branches
PiperOrigin-RevId: 201025191
--
64c3b02006f39e6a8127bbabf9ec947fb45b6504 by Greg Falcon <gfalcon@google.com>:
Provide absl::from_chars for double and float types. This is a forward-compatible implementation of std::from_chars from C++17.
This provides exact "round_to_nearest" conversions, and has some nice properties:
* Works with string_view (it can convert numbers from non-NUL-terminated buffers)
* Never allocates memory
* Faster than the standard library strtod() in our toolchain
* Uses integer math in its calculations, so is unaffected by floating point environment
* Unaffected by C locale
Also change SimpleAtod/SimpleAtoi to use this new API under the hood.
PiperOrigin-RevId: 201003324
--
542869258eb100779497c899103dc96aced52749 by Greg Falcon <gfalcon@google.com>:
Internal change
PiperOrigin-RevId: 200999200
--
3aba192775c7f80e2cd7f221b0a73537823c54ea by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 200947470
--
daf9b9feedd748d5364a4c06165b7cb7604d3e1e by Mark Barolak <mbar@google.com>:
Add an absl:: qualification to a usage of base_internal::SchedulingMode outside of an absl:: namespace.
PiperOrigin-RevId: 200748234
--
a8d265290a22d629f3d9bf9f872c204200bfe8c8 by Mark Barolak <mbar@google.com>:
Add a missing namespace closing comment to optional.h.
PiperOrigin-RevId: 200739934
--
f05af8ee1c6b864dad2df7c907d424209a3e3202 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 200719115
GitOrigin-RevId: f28d30df5769bb832dec3ff36d2fcd2bcdf494a3
Change-Id: Ie4fa601078fd4aa57286372611f1d114fdec82c0
- 38311bf46f29bf1b20bdfe6c9b10c54e6258d28c Fix inlined_vector_benchmark when using libc++. libc++'s ... by Derek Mauro <dmauro@google.com>
- 32178d067d4af7c3062532103d213eb7230c2be6 Adding sha256 hashes to dependencies in Abseil OSS WORKSP... by Daniel Katz <katzdm@google.com>
- 13ac34416b326909f1ce0889ec0eb3bff3f3bebe Fix silly whitespace typo. by Daniel Katz <katzdm@google.com>
GitOrigin-RevId: d6b8d35be9659e1c99a5daca1af8c8587acaa044
Change-Id: I6be0d76930206edb79a10779bff3ffcc5ce856c9
- 64db19b773134c6c8004e3b23c9ca892efbf8bae Move SpinLock's adaptive spin count computation from a st... by Derek Mauro <dmauro@google.com>
- 6f9533fb44a52485a7c2bbb9b4efc7bf8d6c359a Import of CCTZ from GitHub. by Abseil Team <absl-team@google.com>
- a211d7255c986e8dd4ceada362c0d054a6a1969a Cleanup exception flags by Abseil Team <absl-team@google.com>
- babdb29c590126fe9bba5229fe91034b5b5c358a Release time benchmarks. by Alex Strelnikov <strel@google.com>
- 5803b32a3ff123d1fb57a0c471d199c818357c9f Release memutil microbenchmarks. by Alex Strelnikov <strel@google.com>
- 5357d4890d30e80c53beb05af32500fb20e9402b Add parens around expansion of ABSL_PREDICT_{FALSE,TRUE} ... by Abseil Team <absl-team@google.com>
- 32023f61a239a5f6b1c59e577bfe81b179bbcd2d Reformat build rule tag. by Alex Strelnikov <strel@google.com>
- 833758ecf2b0cf7a42bbd50b5b127e416425c168 Release uint128 microbenchmarks. by Alex Strelnikov <strel@google.com>
- c115a9bca1f944b90fdc78a56b2de176466b124f Disambiguate bitwise-not of size_type by Abseil Team <absl-team@google.com>
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