This reverts commit 6382893890.
Reason for revert: Causes failures on big endian platforms and riscv64.
Possibly a bug in the generic implementation.
For #64284.
For #64285.
Change-Id: Ic1bb8533d9641fae28d0337b36d434b9a575cd7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/543895
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
TryBot-Bypass: Michael Knyszek <mknyszek@google.com>
This change introduces new options to set the floating point
mode on ARM targets. The GOARM version number can optionally be
followed by ',hardfloat' or ',softfloat' to select whether to
use hardware instructions or software emulation for floating
point computations, respectively. For example,
GOARM=7,softfloat.
Previously, software floating point support was limited to
GOARM=5. With these options, software floating point is now
extended to all ARM versions, including GOARM=6 and 7. This
change also extends hardware floating point to GOARM=5.
GOARM=5 defaults to softfloat and GOARM=6 and 7 default to
hardfloat.
For #61588
Change-Id: I23dc86fbd0733b262004a2ed001e1032cf371e94
Reviewed-on: https://go-review.googlesource.com/c/go/+/514907
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Auto-Submit: Michael Knyszek <mknyszek@google.com>
Slightly simplifies the code and avoids human error.
Change-Id: Ib76575e8bc5b3a699ba6cc3870d63cd7a55e6416
Reviewed-on: https://go-review.googlesource.com/c/go/+/541476
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
This change enhances the zstd Reader's skipFrame function to validate
the new offset when skipping frames in a seekable stream, preventing
invalid offsets that could occur previously.
A set of "bad" test strings has been added to fuzz_test.go to extend
the robustness checks against potential decompression panics.
Additionally, a new test named TestReaderBad is introduced in
zstd_test.go to verify proper error handling with corrupted input
strings.
The BenchmarkLarge function has also been refactored for clarity,
removing unnecessary timer stops and resets.
Updates #63824
Change-Id: Iccd248756ad6348afa1395c7799350d07402868a
GitHub-Last-Rev: 63055b91e9
GitHub-Pull-Request: golang/go#64056
Reviewed-on: https://go-review.googlesource.com/c/go/+/541220
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Klaus Post <klauspost@gmail.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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Port CL 408826 and CL 413474 from reflect to internal/reflectlite.
It is a bit simpler as reflectlite has fewer methods.
Change-Id: I479199c8984afd35f42c3d8e764340184c17948f
Reviewed-on: https://go-review.googlesource.com/c/go/+/542976
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Reviewed-by: David Chase <drchase@google.com>
Extracts changes from that were submitted in other CLs to enable AVX512
detection, notably:
- https://go-review.googlesource.com/c/go/+/271521
- https://go-review.googlesource.com/c/go/+/379394
- https://go-review.googlesource.com/c/go/+/502476
This change adds properties to the cpu.X86 fields to enable runtime
detection of AVX512, and the hasAVX512F, hasAVX512BW, and hasAVX512VL
macros to support bypassing runtime checks in assembly code when
GOAMD64=v4 is set.
Change-Id: Ia7c3f22f1e66bf1de575aba522cb0d0a55ce791f
Reviewed-on: https://go-review.googlesource.com/c/go/+/536257
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>
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Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Removes the RSA KEX based ciphers from the default list. This can be
reverted using the tlsrsakex GODEBUG.
Fixes#63413
Change-Id: Id221be3eb2f6c24b91039d380313f0c87d339f98
Reviewed-on: https://go-review.googlesource.com/c/go/+/541517
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Updates the default from 1.0 -> 1.2 for servers, bringing it in line
with clients. Add a GODEBUG setting, tls10server, which lets users
revert this change.
Fixes#62459
Change-Id: I2b82f85b1c2d527df1f9afefae4ab30a8f0ceb41
Reviewed-on: https://go-review.googlesource.com/c/go/+/541516
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After landing the new execution tracer, the Windows builders failed with
some new errors.
Currently the GoSyscallBegin event has no indicator that its the target
of a ProcSteal event. This can lead to an ambiguous situation that is
unresolvable if timestamps are broken. For instance, if the tracer sees
the ProcSteal event while a goroutine has been observed to be in a
syscall (one that, for instance, did not actually lose its P), it will
proceed with the ProcSteal incorrectly.
This is a little abstract. For a more concrete example, see the
go122-syscall-steal-proc-ambiguous test.
This change resolves this ambiguity by interleaving GoSyscallBegin
events into how Ps are sequenced. Because a ProcSteal has a sequence
number (it has to, it's stopping a P from a distance) it necessarily
has to synchronize with a precise ProcStart event. This change basically
just extends this synchronization to GoSyscallBegin, so the ProcSteal
can't advance until _exactly the right_ syscall has been entered.
This change removes the test skip, since it and CL 541695 fix the two
main issues observed on Windows platforms.
For #60773.
Fixes#64061.
Change-Id: I069389cd7fe1ea903edf42d79912f6e2bcc23f62
Reviewed-on: https://go-review.googlesource.com/c/go/+/541696
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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An out-of-memory error in this test has been observed on 32-bit
platforms, so halve the memory footprint of the test. Also halve the
size of steady-state allocation rate in bytes. The end result should be
approximately the same GC CPU load but at half the memory usage.
Change-Id: I2c2d335da7dc4c5c58cb9d92b6e5a4ece55d24a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/542215
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Currently the trace parser enforces that the timestamps for a series of
a batches on the same M come in order. We cannot actually assume this in
general because we don't trust timestamps. The source of truth on the
batch order is the order in which they were emitted. If that's wrong, it
should quickly become evident in the trace.
For #60773.
For #64061.
Change-Id: I7d5a407c9568dd1ce0b79d51b2b538ed6072b26d
Reviewed-on: https://go-review.googlesource.com/c/go/+/541695
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Auto-Submit: Michael Knyszek <mknyszek@google.com>
This CL exports the previously unexported Alias type and
corresponding functions and methods per issue #63223.
Whether Alias types are used or not is controlled by
the gotypesalias setting with the GODEBUG environment
variable. Setting gotypesalias to "1" enables the Alias
types:
GODEBUG=gotypesalias=1
By default, gotypesalias is not set.
Adjust test cases that enable/disable the use of Alias
types to use -gotypesalias=1 or -gotypesalias=0 rather
than -alias and -alias=false for consistency and to
avoid confusion.
For #63223.
Change-Id: I51308cad3320981afac97dd8c6f6a416fdb0be55
Reviewed-on: https://go-review.googlesource.com/c/go/+/541737
Run-TryBot: Robert Griesemer <gri@google.com>
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There are a couple known issues here. Disable the tests for now so it's
not blocking anyone.
For #64061.
Change-Id: Iaaa9007b93ea78739cb7d2b59b2a1715de29d72b
Reviewed-on: https://go-review.googlesource.com/c/go/+/541197
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For #63960.
Change-Id: I1efe35435e32623aba894a915114e394570ebc56
Reviewed-on: https://go-review.googlesource.com/c/go/+/540259
Reviewed-by: Michael Pratt <mpratt@google.com>
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This change adds a new MutatorUtilization for traces for Go 1.22+.
To facilitate testing, it also generates a short trace with the
gc-stress.go test program (shortening its duration to 10ms) and adds it
to the tests for the internal/trace/v2 package. Notably, we make sure
this trace has a GCMarkAssistActive event to test that codepath.
For #63960.
For #60773.
Change-Id: I2e61f545988677be716818e2a08641c54c4c201f
Reviewed-on: https://go-review.googlesource.com/c/go/+/540256
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This change mostly implements the design described in #60773 and
includes a new scalable parser for the new trace format, available in
internal/trace/v2. I'll leave this commit message short because this is
clearly an enormous CL with a lot of detail.
This change does not hook up the new tracer into cmd/trace yet. A
follow-up CL will handle that.
For #60773.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-amd64-longtest-race
Change-Id: I5d2aca2cc07580ed3c76a9813ac48ec96b157de0
Reviewed-on: https://go-review.googlesource.com/c/go/+/494187
Reviewed-by: Michael Pratt <mpratt@google.com>
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Change-Id: I3a6cded573aa35afe8abc624c78599f03ec8bf94
Reviewed-on: https://go-review.googlesource.com/c/go/+/538217
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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This change adds the allocation headers GOEXPERIMENT which is a no-op.
It forks two runtime files temporarily to make the GOEXPERIMENT easier
to maintain. The forked files are mbitmap.go and msize.go.
Change-Id: I60202c00e614e4517de7dd000029cf80dd0121ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/537980
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This change introduces a new (unexported for now) _Alias type node
which serves as an explicit representation for alias types in type
alias declarations:
type A = T
The _Alias node stands for the type A in this declaration, with
the _Alias' actual type pointing to (the type node for) T.
Without the _Alias node, (the object for) A points directly to T.
Explicit _Alias nodes permit better error messages (they mention
A instead of T if the type in the source was named A) and can help
with certain type cycle problems. They are also needed to hold
type parameters for alias types, eventually.
Because an _Alias node is simply an alternative representation for
an aliased type, code that makes type-specific choices must always
look at the actual (unaliased) type denoted by a type alias.
The new function
func _Unalias(t Type) Type
performs the necessary indirection. Type switches that consider
type nodes, must either switch on _Unalias(typ) or handle the
_Alias case.
To avoid breaking clients, _Alias nodes must be enabled explicitly,
through the new Config flag _EnableAlias.
To run tests with the _EnableAlias set, use the new -alias flag as
in "go test -run short -alias". The testing harness understands
the flag as well and it may be used to enable/disable _Alias nodes
on a per-file basis, with a comment ("// -alias" or // -alias=false)
on the first line in those files. The file-based flag overrides the
command-line flag.
The use of _Alias nodes is disabled by default and must be enabled
by setting _EnableAlias.
Passes type checker tests with and without -alias flag set.
For #25838.
For #44410.
For #46477.
Change-Id: I78e178a1aef4d7f325088c0c6cbae4cfb1e5fb5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/521956
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Description in accordance with RFC 8878 3.1.1.3.1.6.
The decompressed size of each stream is equal to (Regenerated_Size+3)/4,
except for the last stream, which may be up to 3 bytes smaller,
to reach a total decompressed size as specified in Regenerated_Size.
Fixes#63824
Change-Id: I5a8b482a995272aa2028a81a4db86c21b1770432
GitHub-Last-Rev: 76a70756bc
GitHub-Pull-Request: golang/go#63959
Reviewed-on: https://go-review.googlesource.com/c/go/+/540055
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Klaus Post <klauspost@gmail.com>
Run-TryBot: Jes Cok <xigua67damn@gmail.com>
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Use ADD with constants, instead of ADDI. Also use SUB with a positive constant
rather than ADD with a negative constant. The resulting assembly is still the
same.
Change-Id: Ife10bf5ae4122e525f0e7d41b5e463e748236a9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/540136
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Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Abstract the hardcoded '/usr/bin/zstd' paths in fuzz and unit tests
to support systems where zstd may be installed at different locations.
The `findZstd` function uses `exec.LookPath` to locate the binary,
enhancing test portability.
Fixes#64000
Change-Id: I0ebe5bbcf3ddc6fccf176c13639ca9d855bcab87
GitHub-Last-Rev: c4dfe1139b
GitHub-Pull-Request: golang/go#64002
Reviewed-on: https://go-review.googlesource.com/c/go/+/540522
Reviewed-by: Klaus Post <klauspost@gmail.com>
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Range over integer is enabled now without the GOEXPERIMENT. The
GOEXPERIMENT is only for range over func. Rename it to rangefunc.
For #61405.
Change-Id: I9405fb8e2e30827875716786823856090a1a0cad
Reviewed-on: https://go-review.googlesource.com/c/go/+/539277
Reviewed-by: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
On Windows, A root local device path is a path which begins with
\\?\ or \??\. A root local device path accesses the DosDevices
object directory, and permits access to any file or device on the
system. For example \??\C:\foo is equivalent to common C:\foo.
The Clean, IsAbs, IsLocal, and VolumeName functions did not
recognize root local device paths beginning with \??\.
Clean could convert a rooted path such as \a\..\??\b into
the root local device path \??\b. It will now convert this
path into .\??\b.
IsAbs now correctly reports paths beginning with \??\
as absolute.
IsLocal now correctly reports paths beginning with \??\
as non-local.
VolumeName now reports the \??\ prefix as a volume name.
Join(`\`, `??`, `b`) could convert a seemingly innocent
sequence of path elements into the root local device path
\??\b. It will now convert this to \.\??\b.
In addition, the IsLocal function did not correctly
detect reserved names in some cases:
- reserved names followed by spaces, such as "COM1 ".
- "COM" or "LPT" followed by a superscript 1, 2, or 3.
IsLocal now correctly reports these names as non-local.
Fixes#63713
Fixes CVE-2023-45283
Fixes CVE-2023-45284
Change-Id: I446674a58977adfa54de7267d716ac23ab496c54
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/2040691
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
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Auto-Submit: Heschi Kreinick <heschi@google.com>
go/version provides basic comparison of Go versions,
for use when deciding whether certain language features
are allowed, and so on.
See the proposal issue #62039 for more details.
Fixes#62039
Change-Id: Ibdfd4fe15afe406c46da568cb31feb42ec30b530
Reviewed-on: https://go-review.googlesource.com/c/go/+/538895
Auto-Submit: Russ Cox <rsc@golang.org>
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Also rename 'substr' to 'sep' in IndexRabinKarp for consistency.
Change-Id: Icc2ad1116aecaf002c8264daa2fa608306c9a88a
GitHub-Last-Rev: 1784b93f53
GitHub-Pull-Request: golang/go#63854
Reviewed-on: https://go-review.googlesource.com/c/go/+/538716
Reviewed-by: Keith Randall <khr@google.com>
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Prior to CL 460595, Lstat reported most reparse points as regular
files. However, reparse points can in general implement unusual
behaviors (consider IO_REPARSE_TAG_AF_UNIX or IO_REPARSE_TAG_LX_CHR),
and Windows allows arbitrary user-defined reparse points, so in
general we must not assume that an unrecognized reparse tag represents
a regular file; in CL 460595, we began marking them as irregular.
As it turns out, the Data Deduplication service on Windows Server runs
an Optimization job that turns regular files into reparse files with
the tag IO_REPARSE_TAG_DEDUP. Those files still behave more-or-less
like regular files, in that they have well-defined sizes and support
random-access reads and writes, so most programs can treat them as
regular files without difficulty. However, they are still reparse
files: as a result, on servers with the Data Deduplication service
enabled, files could arbitrarily change from “regular” to “irregular”
without explicit user intervention.
Since dedup files are converted in the background and otherwise behave
like regular files, this change adds a special case to report DEDUP
reparse points as regular.
Fixes#63429.
No test because to my knowledge we don't have any Windows builders
that have the deduplication service enabled, nor do we have a way to
reliably guarantee the existence of an IO_REPARSE_TAG_DEDUP file.
(In theory we could add a builder with the service enabled on a
specific volume, write a test that encodes knowledge of that volume,
and use the GO_BUILDER_NAME environment variable to run that test only
on the specially-configured builders. However, I don't currently have
the bandwidth to reconfigure the builders in this way, and given the
simplicity of the change I think it is unlikely to regress
accidentally.)
Change-Id: I649e7ef0b67e3939a980339ce7ec6a20b31b23a1
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Auto-Submit: Bryan Mills <bcmills@google.com>
Just as same as other copied functions,
like stringsTrimSuffix in "os/executable_procfs.go"
Change-Id: I9c9fbd75b009a5ae0e869cf1fddc77c0e08d9a67
GitHub-Last-Rev: 4c18865e15
GitHub-Pull-Request: golang/go#63704
Reviewed-on: https://go-review.googlesource.com/c/go/+/537056
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Make the choice of using these instructions dynamic (triggered by cpu
feature detection) rather than static (trigered by GOARM setting).
if GOARM>=7, we know we have them.
For GOARM=5/6, dynamically dispatch based on auxv information.
Update #17082
Update #61588
Change-Id: I8a50481d942f62cf36348998a99225d0d242f8af
Reviewed-on: https://go-review.googlesource.com/c/go/+/525637
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Reviewed-by: Cherry Mui <cherryyz@google.com>
This is a follow-up to CL 538175.
Change-Id: Iec2523b36a16d7e157c17858c89fcd43c2470d58
GitHub-Last-Rev: 812d36e57c
GitHub-Pull-Request: golang/go#63770
Reviewed-on: https://go-review.googlesource.com/c/go/+/538195
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Reviewed-by: Keith Randall <khr@golang.org>
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This change brings the error message for this case back in line
with the pre-Go1.18 error message.
Fixes#63563.
Change-Id: I3c6587d420907b34ee8a5f295ecb231e9f008380
Reviewed-on: https://go-review.googlesource.com/c/go/+/538058
Auto-Submit: Robert Griesemer <gri@google.com>
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Updates #56001
Change-Id: I16440114ecf661e9fc17d304ab3b16bc97ef82f8
Reviewed-on: https://go-review.googlesource.com/c/go/+/517935
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Paul Murphy <murp@ibm.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
In CleanCmdEnv, use cmd.Environ instead of os.Environ, so it
sets the PWD environment variable if cmd.Dir is set. This ensures
the child process sees a canonical path for its working directory.
Change-Id: Ia769552a488dc909eaf6bb7d21937adba06d1072
Reviewed-on: https://go-review.googlesource.com/c/go/+/538215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
…generics
The logic of HashStrBytes, HashStrRevBytes and HashStr, HashStrRev,
are exactly the same, except that the types are different.
Since the bootstrap toolchain is bumped to 1.20, we can eliminate them
by using generics.
Change-Id: I4336b1cab494ba963f09646c169b45f6b1ee62e3
GitHub-Last-Rev: b11a2bf947
GitHub-Pull-Request: golang/go#63766
Reviewed-on: https://go-review.googlesource.com/c/go/+/538175
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
As spotted by staticcheck, the body did keep track of errors by sharing
a single err variable, but its last value was never used as the function
simply finished by returning nil.
To prevent postDecode from erroring on empty profiles,
which breaks TestEmptyProfile, add a check at the top of the function.
Update the runtime/pprof test accordingly,
since the default units didn't make sense for an empty profile anyway.
Change-Id: I188cd8337434adf9169651ab5c914731b8b20f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/483137
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Use the new rttype mechanism to share internal/abi types between
the compiler and runtime.
Change-Id: I2bbba4d8090c6f7ff20dca15b7b665f5d04e5bfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/534936
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Run-TryBot: David Chase <drchase@google.com>
Filippo Valsorda
Michael Knyszek
Ludi Rehak
Russ Cox
Jes Cok
Andy Pan
Daniel Martí
aimuz
Alexander Yastrebov
Robert Griesemer
Cherry Mui
Achille Roussel
Roland Shoemaker
Joel Sing
Damien Neil
qiulaidongfeng
Bryan C. Mills
apocelipes
Keith Randall
cui fliter