Adds a new Version type to pkgbits to represent the version of the
bitstream. Versions let readers and writers know when different data is
expected to be present or not in the bitstream. These different pieces
of data are called Fields, as an analogy with fields of a struct.
Fields can be added, removed or changed in a Version. Extends Encoder
and Decoder to report which version they are.
Updates #68778
Change-Id: Iaffa1828544fb4cbc47a905de853449bc8e5b91f
Reviewed-on: https://go-review.googlesource.com/c/go/+/605655
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Fix typos in ~30 files
Change-Id: Ie433aea01e7d15944c1e9e103691784876d5c1f9
GitHub-Last-Rev: bbaeb3d1f8
GitHub-Pull-Request: golang/go#68964
Reviewed-on: https://go-review.googlesource.com/c/go/+/606955
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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This is a minimal change to start to require the new minimum bootstrap.
Taking advantage of the newer bootstap to simplify and improve code is
left to be done in separate CLs.
For #64751.
Change-Id: I1d4f883fae3026354a199174d51e79a36cd2dc53
Reviewed-on: https://go-review.googlesource.com/c/go/+/606156
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Change-Id: If7a2aa45770d19ee15f8fe99cab62624c2e29ef6
Reviewed-on: https://go-review.googlesource.com/c/go/+/606958
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Adds a -gomodversion flag to testdir. This sets the go version
in generated go.mod files. This is just runindir tests at the moment.
This is a building block so that tests can be written for exported
type parameterized aliases (like reproducing #68526).
This also adds a test that uses this feature. A type parameterized
alias is used so aliastypeparams and gotypesalias must be enabled.
gotypesalias is enabled by the go module version. The alias is not
exported and will not appear in exportdata. The test shows the
package containing the alias can be imported. This encapsulates
the level of support of type parameterized aliases in 1.23.
Updates #68526
Updates #68778
Change-Id: I8e20df6baa178e1d427d0fff627a16714d9c3b18
Reviewed-on: https://go-review.googlesource.com/c/go/+/604102
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Reviewed-by: Austin Clements <austin@google.com>
When paths with symlinks are involved, it's not viable to compare them
with string equality. Don't use a temporary directory with symlinks in
it as input, so the test works in more environments.
For #62516.
Change-Id: I95d774365cc2f90eb0ffcffa61229ed5cee43e3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/607035
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Change-Id: I0d19f77f8c4b99350e3ed1e7f92db6ae198e812a
Reviewed-on: https://go-review.googlesource.com/c/go/+/607077
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Unalias the ~T terms during underIs. Before, if T was an alias
of U, it may pass T to the iteration function. The iterator
function expects an underlying type, under(U), to be passed.
This caused several bugs where underIs is used without
eventually taking the underlying type.
Updates #68935Fixes#68903
Change-Id: Ie8691d8dddaea00e1dcba94d17c0f1b021fc49a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/606075
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Change-Id: I23c0c850ba57e7a49b78159d9293d1d25e1d2340
Reviewed-on: https://go-review.googlesource.com/c/go/+/606637
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Auto-Submit: Ian Lance Taylor <iant@golang.org>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
The Time.Sub function is mentioned in the previous sentence.
Change-Id: Ic79958cea4d1f9f9014f6dafd8e749c204db4f50
Reviewed-on: https://go-review.googlesource.com/c/go/+/606575
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Auto-Submit: Ian Lance Taylor <iant@google.com>
This exception was originally added by CL 152108 in November 2009. I'm
pretty sure no one uses reiserfs nowadays (and if someone does, this bug
must have been fixed by now).
Change-Id: I274ebe2f7910cab81b70a44b2da3f6fe761073bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/591417
Reviewed-by: Ian Lance Taylor <iant@google.com>
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This simplifies tests a little bit.
Change-Id: I910e3c97cfd20b26951d2a4909d86b5be06bde56
Reviewed-on: https://go-review.googlesource.com/c/go/+/606899
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Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
This test is checking WriteFile, not MkdirTemp, and using t.TempDir
makes the test case code a tad smaller and simpler.
Change-Id: I48837f77572f375d56f3a387efa9a4ee1d3706fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/606898
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Use t.Chdir and t.TempDir to simplify test case code.
Change-Id: If4de06d2373100ce53a5b8f6702d5f4866e3b23d
Reviewed-on: https://go-review.googlesource.com/c/go/+/606897
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Simplify the test logic by using t.TempDir, t.Chdir, and Chdir to
startPath parent.
Change-Id: Ibe71a8c26b8e54c22eb93510037605b69c67bc7a
Reviewed-on: https://go-review.googlesource.com/c/go/+/606896
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Adds a new Context method to testing.T, that returns a context, that is
canceled before the end of its test function.
Fixes#36532.
Change-Id: I9315ad4dad25529d0b5be809e2d9db4e7528b5f2
GitHub-Last-Rev: 1c3fd6c4d8
GitHub-Pull-Request: golang/go#68828
Reviewed-on: https://go-review.googlesource.com/c/go/+/603959
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
The intrinsic handling code is a good thousand lines in the fairly
large ssa.go file. This code is already reasonably self-contained - factor
it out into a separate file so that future changes are easier to manage
(and it becomes easier to add/change intrinsics for an architecture).
Change-Id: I3c18d3d1bb6332f1817d902150e736373bf1ac81
Reviewed-on: https://go-review.googlesource.com/c/go/+/605477
Reviewed-by: Carlos Amedee <carlos@golang.org>
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The architecture handling code for intrinsics is more complex than
it needs to be. sys.Archs is already an array of *sys.Arch and the
existing InFamily function can be used instead of a reimplementation.
Add some test coverage for sys.Arch.InFamily while here.
Change-Id: Ia764f211114fea65424c09a421c5ccb02b7187b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/605476
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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The AIX ABI requires allocating parameter save space when calling
a function, even if the arguments are passed via registers.
gcc sometimes uses this space. In the case of the cgo c-archive
tests, it clobbered the storage space of argc/argv which prevented
the test program from running the expected test.
Fixes#68957
Change-Id: I8a267b463b1abb2b37ac85231f6c328f406b7515
Reviewed-on: https://go-review.googlesource.com/c/go/+/606895
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Run-TryBot: Paul Murphy <murp@ibm.com>
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Make it obvious that this function panics.
Change-Id: I272142d2cf7132aa8915f8f4b5945834376db062
Reviewed-on: https://go-review.googlesource.com/c/go/+/606935
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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The errors from os are supposed to be wrapped to add some context,
but in this particular case a raw syscall error is returned.
Change-Id: I1b98dbd7b385c5c1cea79a1b0ec7201ca9bdca40
Reviewed-on: https://go-review.googlesource.com/c/go/+/606657
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Makes calls to the global Seed a no-op. The GODEBUG=randseednop=0
setting can be used to revert this behavior.
Fixes#67273
Change-Id: I79c1b2b23f3bc472fbd6190cb916a9d7583250f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/606055
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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Change-Id: Id991ec0826a4e2857f00330b4b7ff2b71907b789
Reviewed-on: https://go-review.googlesource.com/c/go/+/606615
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Commit-Queue: Ian Lance Taylor <iant@google.com>
Mutex contention events with delay of 0 need more than CL 604355 added:
When deciding which event to store in the M's single available slot,
always choose to drop the zero-delay event. Store an explicit flag for
whether we have an event to store, rather than relying on a non-zero
delay.
And, fix a test of sync.Mutex contention that expects those events to
have non-zero delay. The reporting of non-runtime contention like this
has long allowed zero-delay events, which we see when cputicks has low
resolution.
Fixes#68892Fixes#68906
Change-Id: Id412141e4eb09724f3ce195899a20d59c92d7b78
Reviewed-on: https://go-review.googlesource.com/c/go/+/606115
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Reviewed-by: Michael Pratt <mpratt@google.com>
When GORISCV64 enables rva22u64, make use of integer MIN/MINU/MAX/MAXU
instructions in compiler rewrite rules.
Change-Id: I4e7c514516acad03f2869d4c8936f06582cf7ea9
Reviewed-on: https://go-review.googlesource.com/c/go/+/559660
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
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Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
The correct word can be seen in lines 381-382.
Change-Id: If3876bd34b6433b69531763f63af88d60a0bfad0
Reviewed-on: https://go-review.googlesource.com/c/go/+/606375
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Some tests need to use os.Chdir, but the use is complicated because
- they must change back to the old working directory;
- they must not use t.Parallel.
Add Chdir that covers these cases, and sets PWD environment variable
to the new directory for the duration of the test for Unix platforms.
Unify the panic message when t.Parallel is used together with t.Setenv
or t.Chdir.
Add some tests.
For #62516.
Change-Id: Ib050d173b26eb28a27dba5a206b2d0d877d761c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/529895
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In Go 1.22 we added code to the go/build package to ignore #cgo noescape
and nocallback directives. That permits us to enable these directives in Go 1.24.
Also, this fixed a Bug in CL 497837:
After retiring _Cgo_use for parameters, the compiler will treat the
parameters, start from the second, as non-alive. Then, they will be marked
as scalar in stackmap, which means the pointer won't be copied correctly
in copystack.
Fixes#56378.
Fixes#63739.
Change-Id: I46e773240f8a467c3c4ba201dc5b4ee473cf6e3e
GitHub-Last-Rev: 42fcc506d6
GitHub-Pull-Request: golang/go#66879
Reviewed-on: https://go-review.googlesource.com/c/go/+/579955
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Reviewed-by: Carlos Amedee <carlos@golang.org>
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Follows up CL 605355
Fixes#68863
Change-Id: I56e05822502e66eed610d5e924d110607ce146b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/606135
Reviewed-by: Damien Neil <dneil@google.com>
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On Linux, a call to creat() is equivalent to calling open() with flags
equal to O_CREAT|O_WRONLY|O_TRUNC, which applies to other platforms
as well in a similar manner. Thus, to force CopyFS's behavior to
comply with the function comment, we need to replace O_TRUNC with O_EXCL.
Fixes#68895
Change-Id: I3e2ab153609d3c8cf20ce5969d6f3ef593833cd1
Reviewed-on: https://go-review.googlesource.com/c/go/+/606095
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Add support for importing a new 'B' tag for type parameters aliases
in the indexed data format.
Updates #68778
Change-Id: I3bd82870d4c4619a3771de30baf6d54f6ee5959e
Reviewed-on: https://go-review.googlesource.com/c/go/+/604635
Reviewed-by: Robert Findley <rfindley@google.com>
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Change-Id: I512808d3cf91466eb6f2c21b49b39ff2e08a9b8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/605498
Reviewed-by: Carlos Amedee <carlos@golang.org>
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Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Named.cleanup is called at the end of type-checking to ensure that
a named type is fully set up; specifically that it's underlying
field is not (still) a Named type. Now it can also be an *Alias
type. Add this case to the respective type switch.
Fixes#68877.
Change-Id: I29bc0024ac9d8b0152a3d97c82dd28d09d5dbd66
Reviewed-on: https://go-review.googlesource.com/c/go/+/605977
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
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For #62384
Change-Id: I1557704c6a0f9c6f3b9aad001374dd5cdbc99065
GitHub-Last-Rev: c258d18cce
GitHub-Pull-Request: golang/go#68893
Reviewed-on: https://go-review.googlesource.com/c/go/+/605758
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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When people return UnmarshalTypeError in UnmarshalJSON, we should append error's Field to FieldStack.
Fixes#68750
Change-Id: I0a5a9b259a1b569de1bebc815ec936c913e10469
GitHub-Last-Rev: 18796addc3
GitHub-Pull-Request: golang/go#68870
Reviewed-on: https://go-review.googlesource.com/c/go/+/605455
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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For the moment, Go calls sendfile(2) to transfer at most 4MB at a time
while sendfile(2) actually allows a larger amount of data on one call.
To reduce system calls of sendfile(2) during data copying, we should
specify the number of bytes to copy as large as possible.
This optimization is especially advantageous for bulky file-to-file copies,
it would lead to a performance boost, the magnitude of this performance
increase may not be very exciting, but it can also cut down the CPU overhead
by decreasing the number of system calls.
This is also how we've done in sendfile_windows.go with TransmitFile.
goos: linux
goarch: amd64
pkg: os
cpu: DO-Premium-AMD
│ old │ new │
│ sec/op │ sec/op vs base │
SendFile-8 1.135 ± 4% 1.052 ± 3% -7.24% (p=0.000 n=10)
│ old │ new │
│ B/s │ B/s vs base │
SendFile-8 902.5Mi ± 4% 973.0Mi ± 3% +7.81% (p=0.000 n=10)
│ old │ new │
│ B/op │ B/op vs base │
SendFile-8 272.0 ± 0% 272.0 ± 0% ~ (p=1.000 n=10) ¹
¹ all samples are equal
│ old │ new │
│ allocs/op │ allocs/op vs base │
SendFile-8 20.00 ± 0% 20.00 ± 0% ~ (p=1.000 n=10) ¹
¹ all samples are equal
Change-Id: Ib4d4c6bc693e23db24697363b29226f0c9776bb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/605235
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Reviewed-by: Carlos Amedee <carlos@golang.org>
Use t.Helper to make the reported failure lines more helpful.
Change-Id: I6593924b3892b2441a197aee4e05f71ea236d426
GitHub-Last-Rev: 2e020ea85c
GitHub-Pull-Request: golang/go#68843
Reviewed-on: https://go-review.googlesource.com/c/go/+/604755
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Flips the pkgReader.enableAlias flag to true when reading unified IR.
This was disabled while resolving #66873. This resolves the TODO to
flip it back to true.
Updates #66873
Updates #68778
Change-Id: Ifd52b0f9510d6bcf151de1c9a18d71ab548c14e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/604099
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Reviewed-by: David Chase <drchase@google.com>
This reverts CL 603895
Reason for revert: We've decided to change the logic for how upgrades are done and want to submit the new logic in a self contained CL that can be cherry-picked onto release-branch.go1.23
Change-Id: I366af8e95ce1de7311b0385a23f9dd3df175745a
Reviewed-on: https://go-review.googlesource.com/c/go/+/605675
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
The port is reportedly broken, and there isn't a builder testing it.
For #68552.
For #67308.
Change-Id: Iababa17cdf855b675aaf85642a667e8081ef5dfe
Reviewed-on: https://go-review.googlesource.com/c/go/+/601777
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Fixes#68863
Change-Id: I0ca324137d1f7510bd0b245791fef07d3b5b401a
Reviewed-on: https://go-review.googlesource.com/c/go/+/605355
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Run-TryBot: Andy Pan <panjf2000@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
The block and mutex profiles have slightly different behaviors when a
sampled event has a negative (or zero) duration. The block profile
enforces a minimum duration for each event of "1" in the cputicks unit.
It does so by clamping the duration to 1 if it was originally reported
as being smaller. The mutex profile for app-level contention enforces a
minimum duration of 0 in a similar way: by reporting any negative values
as 0 instead.
The mutex profile for runtime-internal contention had a different
behavior: to enforce a minimum event duration of "1" by dropping any
non-conforming samples.
Stop dropping samples, and use the same minimum (0) that's in place for
the other mutex profile events.
Fixes#64253Fixes#68453Fixes#68781
Change-Id: I4c5d23a2675501226eef5b9bc1ada2efc1a55b9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/604355
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Rhys Hiltner <rhys.hiltner@gmail.com>
Change-Id: I1c837820bdd64b61fca46d45677664b2bb2be606
Reviewed-on: https://go-review.googlesource.com/c/go/+/605356
Commit-Queue: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Fixes#61901.
Change-Id: I4db21c91fd21079f2aa3bc81fb03dd6f40423a38
GitHub-Last-Rev: ed3df560a4
GitHub-Pull-Request: golang/go#67543
Reviewed-on: https://go-review.googlesource.com/c/go/+/587095
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
