There are many reports that sigaltstack() on Apple platforms stops
backtrace() from tracing an original stack, e.g.
* d39ead4105
* https://reviews.llvm.org/D28265
If we disable an alternate stack for signal handler, we won't be able to
catch stack overflow errors, but backrace() will work again.
This test indicates it has a 90% chance of timing out at its current 60 second limit.
Stats over 1000 runs: max = 102.5s, min = 40.4s, avg = 71.1s, dev = 11.2s
Note that if you run this test locally from a workstation without flags, it'll take maybe 3 to 5 seconds. However, the test is run with config of android_arm, which seems to drastically change the execution time.
PiperOrigin-RevId: 459503103
Change-Id: I7b7aaa2db7880370f47d1a83d295a3234f738a18
Adds policy checks the raise the minimum C++ version to C++14
and the minimum GCC version to GCC 5
Updates the docs to indicate the C++14 minimum.
PiperOrigin-RevId: 459401288
Change-Id: I18878f0e13001c57e97e26ad7c9a9c9c12c39265
This seems to have caused some regressions by causing a flaky failure in some
cases. Revert the change to enable investigation.
PiperOrigin-RevId: 459331687
Change-Id: Iaa4e4bfcb3013a75a2cd72768d980ac5e450f70c
The alternate signal stack may be sufficiently beyond the esimated frame size
(100k). If we run into the case that the frame is not in the correct direction
assume that the frames may be non-contiguous due to an alternate signal stack
layout. In such a case, if we find that there is an alternate stack configured,
ignore the discontiuity (assuming that it is a removable point-wise
discontinuity) and continue the stack unwinding. This permits us to capture
stack traces in more cases.
PiperOrigin-RevId: 458327775
Change-Id: Ia8b461847401492f72a23ba26601c72e0109402c
This allows symbolization to work if different parts of a binary's text are mapped differently, e.g. if they're mlock()ed or mapped onto huge pages.
PiperOrigin-RevId: 456600880
Change-Id: I069264f94cf834df9201968275a00828f5eb077e
This ensures that emmintrin.h is included with clang-cl. Otherwise, errors like
this occur:
.../absl/container/internal/raw_hash_set.h(536,8): error: unknown type name '__m128i'
inline __m128i _mm_cmpgt_epi8_fixed(__m128i a, __m128i b) {
This aligns the include ifdef guards and the guards that use the provided APIs.
The includes are also reordered, so they appear after the config header which
provides the internal macro values.
PiperOrigin-RevId: 456530271
Change-Id: I86dfd0022fd06fe7aa132138ec4d1bd14a86ba84
Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1200
`backtrace` and `execinfo.h` can be provided by libexecinfo on uclibc and musl resulting in the following build failure with any user of abseil-cpp (such as collectd):
```
/home/buildroot/autobuild/instance-0/output-1/host/lib/gcc/sparc-buildroot-linux-uclibc/10.3.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: /home/buildroot/autobuild/instance-0/output-1/host/bin/../sparc-buildroot-linux-uclibc/sysroot/usr/lib/libabsl_stacktrace.so: undefined reference to `backtrace'
```
[...]
```
libgrpc++ . . . . . . no (libgrpc++ not found)
```
[...]
```
configure: error: "Some plugins are missing dependencies - see the summary above for details"
```
Fixes:
- http://autobuild.buildroot.org/results/6a0484412f020e763ce3ad5bda48f09c78645bff
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Merge dac52cd20e into 93ad4284ac
Merging this change closes#1200
COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1200 from ffontaine:master dac52cd20e
PiperOrigin-RevId: 456323163
Change-Id: I3d2206761524d36e2b227c571e2e513f6840ff75
As part of this update, GoogleTest is now using the Abseil flags
implementation, and the flags usage_test needs to be modified to pass.
If building with bazel and --define=absl=1 to force GoogleTest to use
Abseil, a WORKSPACE dependency on the abseil branch of the RE2 project
is now required.
PiperOrigin-RevId: 455512245
Change-Id: I2025df0c86006fac97a80713524c9d0aae8b358e
Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1197
Fix the following musl build failure on mips:
```
In file included from /nvmedata/autobuild/instance-15/output-1/build/libabseil-cpp-20211102.0/absl/base/internal/low_level_alloc.cc:26:
/nvmedata/autobuild/instance-15/output-1/build/libabseil-cpp-20211102.0/absl/base/internal/direct_mmap.h:49:10: fatal error: sgidefs.h: No such file or directory
49 | #include <sgidefs.h>
| ^~~~~~~~~~~
```
Fixes:
- http://autobuild.buildroot.org/results/3fa027e602bacb22316fb5d9b233baa0b0f0e845
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Merge c9b5b5c547 into a184bab83f
Merging this change closes#1197
COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1197 from ffontaine:master c9b5b5c547
PiperOrigin-RevId: 455467767
Change-Id: I1905f7d70e914288bc1524a52adce3476a779fd8
Using GoogleTest at 0320f517fd920866d918e564105d68fd4362040a breaks Windows DLLs.
PiperOrigin-RevId: 455452411
Change-Id: Iff89a01351c01487786a22701efedf25860fadf9
As part of this update, GoogleTest is now using the Abseil flags
implementation, and the flags usage_test needs to be modified to pass.
If building with bazel and --define=absl=1 to force GoogleTest to use
Abseil, a WORKSPACE dependency on the abseil branch of the RE2 project
is now required.
PiperOrigin-RevId: 455257879
Change-Id: Id1548ce7d6a95b747b72a4f255d31ced98e36006
contain the requested zone.
And now that we have a fallback at all, remove the special case that
allowed for testing absl::LocalTimeZone() under TZ=US/Pacific.
And we might as well update the existing embedded data while we're here.
This is modifying the test framework only.
PiperOrigin-RevId: 454896078
Change-Id: I3ec8391a5a51fe1e86a14f39d57ed6dac89d5905
The intent of the macro is to say what locks cannot be held when calling the method, not making a promise that they will be acquired.
PiperOrigin-RevId: 454158686
Change-Id: I71087460c3df27c7d6e0571156f19f525024f1de
This change introduces the symbol
ABSL_INTERNAL_NEED_REDUNDANT_CONSTEXPR_DECL
to guard redundant declarations of static constexpr data
members that are needed prior to C++17.
This change also introduces the symbol
ABSL_INTERNAL_CPLUSPLUS_LANG, which is supposed to be set
to the same value as __cplusplus, except it uses _MSVC_LANG
on MSVC so that the value is correct on MSVC.
Neither of these new symbols should be used outside of Abseil.
Fixes#1191
PiperOrigin-RevId: 453923908
Change-Id: I1316c52c19fa0c168b93cced0c817e4cb7c9c862
When we would perform a stacktrace using the frame pointer walking, because we
did the adjustment for the return address separately, we were misaligning the
stack size and frame. Simplify the logic and correct the offset.
The recovered frame pointer provides us with the return address of the current
frame and the previous frame's frame pointer. Subsequently, we decide if we
want to record this frame or not. The value in `next_frame_pointer` already
points to the value from the previous stack frame (that is the next frame
pointer to iterate). As such, the value computed by `ComputeStackFrameSize` is
the value for the current frame. This was offset by one previously.
Take the opportunity to clean up some of the local comments, fixing typos and
splitting up the comments to reflect the lines that they are associated with.
PiperOrigin-RevId: 453744059
Change-Id: If14813e0ac36f327f4b7594472f2222d05c478aa
A few targets were missing `linkopts = ...` and so were not obeying
the project-wide default settings.
Omit any changes to cctz for now, because it's vendored from another project.
For portability, absl_time_test builds a small, incomplete tzdata
database into the test binary and uses that instead of the system tzdata
database. (absl_time_test needs to run on some platforms that lack a
system tzdata database.) However, this causes issues if TZ is set to
something that isn’t in the test database. To address them, fall back to
America/Los_Angeles if TZ is set to an unknown value during testing.
Bug: https://bugs.debian.org/1012194
PiperOrigin-RevId: 453257912
Change-Id: I293d0f96876b31c32a2847468a3377bb49f3aa15
Copybara-Service
Andrei Polushin
Abseil Team
Derek Mauro
Bruno Pitrus
Saleem Abdulrasool
Dino Radakovic
Gennadiy Rozental
Fabrice Fontaine
Laramie Leavitt
Andy Getzendanner
Tom Manshreck
James Y Knight
Jeremy Nimmer
Benjamin Barenblat