The current implementation correctly copies up to 15 bytes of data, but the nullify code clears up to 16 bytes, which was likely motivated by the assumption that the length indicator is always the last byte.
This changes limits the nullify to 15 bytes as well removing this layout specific assumption from cord.h, making future platform specific internal layout changes easier to land.
PiperOrigin-RevId: 477997741
Change-Id: Idcdfeca2a005139f97eafcc77111542d90b817af
This removes layout specific details from InlineData from cord.cc, making future platform specific internal layout changes easier to land.
PiperOrigin-RevId: 477870559
Change-Id: I26e428ef280d593ad321cf7875e05adcb1cb6438
This removes layout specific details from InlineData from cord.h, making future platform specific internal layout changes easier to land.
PiperOrigin-RevId: 477869206
Change-Id: I1d417af47d7f04e34a98ba7b93ae591ece8f9151
Half-open intervals are recommended by Dijkstra:
https://www.cs.utexas.edu/users/EWD/transcriptions/EWD08xx/EWD831.html
This also simplifies a static_assert by removing a +1 term.
Also fix a "smaller exponent" copy/pasto.
PiperOrigin-RevId: 477848998
Change-Id: I67af73d37ac08d36a1117ba33313a02932bd5814
This makes future platform specific internal layout changes easier to land.
PiperOrigin-RevId: 477843948
Change-Id: I4ca4fdea5e965261c029d08319aba0290721c227
In particular:
* point to LOG mutator methods that can affect their values
* point out lifetime hazards with ABSL_ATTRIBUTE_LIFETIME_BOUND
PiperOrigin-RevId: 477725823
Change-Id: I38cb434b300ceea3cceb2c42eb406bba8e1049d4
Also remove the transfer implementations from btree_set.h and flat_hash_set.h, which are equivalent to the default implementations.
Motivation: this will simplify upcoming changes related to trivial relocation.
PiperOrigin-RevId: 477493403
Change-Id: I75babef4c93dec3a8105f86c58af54199bb1ec9c
Certain core libraries in Chrome build with these warnings [1];
btree_map and btree_set cannot be used in those libraries until these
warnings are fixed.
[1] https://crbug.com/1292951
PiperOrigin-RevId: 476908396
Change-Id: I32e9ea1eec911e329d6ff00f04fa2e9cfde8660a
Example of how to change to the new type trait:
```
#include "absl/base/attributes.h"
if (ABSL_IS_TRIVIALLY_RELOCATABLE(T)) { DoSomething(); }
```
to
```
#include "absl/meta/type_traits.h"
if (absl::is_trivially_relocatable<T>::value) { DoSomething(); }
```
Note that optimization.h is also built in C mode so we can't put a type trait there.
PiperOrigin-RevId: 475633715
Change-Id: I2bc85f3f6711d1280049fd01eb97c497d2d0d929
The btree data structure poisons regions of memory it's not using. It leaves
these regions poisoned when it frees memory. This means that a custom memory
allocator that tries to reuse freed memory will trigger an ASAN
use-after-poison error.
The fix is to unpoison each memory region right before freeing it.
PiperOrigin-RevId: 475309671
Change-Id: I29d55c298d3d89a83e1f960deb6e93118891ff83
In Android builds this library calls __android_log_write directly, and so needs this linker dep.
PiperOrigin-RevId: 474080654
Change-Id: I19f6ac4f78e635541ccad08ec9e553adfe609b3f
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on .cc files in */internal/.)
Bug: chromium:1292951
PiperOrigin-RevId: 473868797
Change-Id: Ibe0b76e33f9e001d59862beaac54fb47bacd39b2
instead of just detecting Bazel's default "compiler" string.
When Bazel auto-configures GCC, it sets the compiler string to
"compiler", probably for backwards compatibility. Some users manually
set the string to "gcc".
This should address the backwards compatibility issues described in
https://github.com/bazelbuild/bazel/issues/12707 and hopefully fix
https://github.com/abseil/abseil-cpp/issues/1263
PiperOrigin-RevId: 473069817
Change-Id: I8a24721f63f9d61447b22b3b05b06a9dde7d34d8
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on tests.)
Bug: chromium:1292951
PiperOrigin-RevId: 473055916
Change-Id: I40cdd6c87ba9d0a5fb2db5746cff04f14ee829c2
Addresses failures with the following, in some files:
-Wshorten-64-to-32
-Wimplicit-int-conversion
-Wsign-compare
-Wsign-conversion
-Wtautological-unsigned-zero-compare
(This specific CL focuses on miscellaneous non-test source files.)
Bug: chromium:1292951
PiperOrigin-RevId: 473054605
Change-Id: Ifd7b24966613ca915511a3a607095508068200b8
internal/stacktrace_x86-inl.inc includes internal/raw_logging.h and therefore needs
a direct dependency to satisfy Bazel layering_check (Clang -fmodules-strict-decluse).
Clang before https://reviews.llvm.org/D132779 does not report the issue becasue:
* internal/stacktrace_x86-inl.inc is an .inc file and is not checked as a main file
* internal/stacktrace_x86-inl.inc is a textual header and older Clang incorrectly
considers there is no requesting module and suppresses the error.
PiperOrigin-RevId: 472795469
Change-Id: Ia4ad667ea80b2590cef1adfd22af025c8df826ac
Change `absl/base/options.h` at install time to reflect the ABI used
to compile the libraries, i.e., if Abseil was compiled with
C++ >= 17 then the `ABSL_OPTION_USE_STD_*` macros are set to `1`,
because then the C++ 17 types are embedded in the ABI of the installed
artifacts.
Likewise, set the `target_compile_features()` of Abseil libraries
to reflect the C++ version used to compile them. If they the Abseil
libraries are compiled with C++ >= 17, then all downstream
dependencies must also be compiled with C++ >= 17.
Fixes#696
PiperOrigin-RevId: 472538165
Change-Id: Ic9e346ebe277c882a18ad96e1918c9e3511c91c3
In some cases we can do a bit better by using
std::min(std::numeric_limits<size_type>::max() / 2, allocator<T>::max_size())
They may help in some cases, particularly on 32-bit platforms.
PiperOrigin-RevId: 471846886
Change-Id: I5bd63de5dd8aec3de6530a33d8904dd6e9bd015e
In the time since pcg_engine.h was written, absl::uint128 was fixed to
generate identical code to __uint128_t
PiperOrigin-RevId: 471789541
Change-Id: Ibd1afc3e5e6d57af27cdd6a21171c96ea333161c
Copybara-Service
Martijn Vels
pateldeev
Abseil Team
Matt Kulukundis
Andy Getzendanner
Evan Brown
Greg Falcon
Derek Mauro
Isuru Fernando