CL 549536 intended to decouple the internal implementation of rwmutex
from the semantic meaning of an rwmutex read/write lock in the static
lock ranking.
Unfortunately, it was not thought through well enough. The internals
were represented with the rwmutexR and rwmutexW lock ranks. The idea was
that the internal lock ranks need not model the higher-level ordering,
since those have separate rankings. That is incorrect; rwmutexW is held
for the duration of a write lock, so it must be ranked before any lock
taken while any write lock is held, which is precisely what we were
trying to avoid.
This is visible in violations like:
0 : execW 11 0x0
1 : rwmutexW 51 0x111d9c8
2 : fin 30 0x111d3a0
fatal error: lock ordering problem
execW < fin is modeled, but rwmutexW < fin is missing.
Fix this by eliminating the rwmutexR/W lock ranks shared across
different types of rwmutex. Instead require users to define an
additional "internal" lock rank to represent the implementation details
of rwmutex.rLock. We can avoid an additional "internal" lock rank for
rwmutex.wLock because the existing writeRank has the same semantics for
semantic and internal locking. i.e., writeRank is held for the duration
of a write lock, which is exactly how rwmutex.wLock is used, so we can
use writeRank directly on wLock.
For #64722.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-staticlockranking
Change-Id: Ia572de188a46ba8fe054ae28537648beaa16b12c
Reviewed-on: https://go-review.googlesource.com/c/go/+/555055
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Compute median as a + (b-a)/2 instead of (a + b)/2.
Add additional test cases.
Fixes#65025.
Change-Id: Ib716a1036c17f8f33f51e33cedab13512eb7e0be
Reviewed-on: https://go-review.googlesource.com/c/go/+/554617
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Also make the reference into a doc link.
Change-Id: Ib112307a65b65c8f963abf60aa92cb1942de940c
Reviewed-on: https://go-review.googlesource.com/c/go/+/554295
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Currently go test -msan runtime always fails on loong64, arm64
and amd64. Changed the variable name to sz to match the
function prototypes.
For #64256
Change-Id: Ida71197307016520deb39293927850d47845140a
GitHub-Last-Rev: 0ee1e3bb09
GitHub-Pull-Request: golang/go#64572
Reviewed-on: https://go-review.googlesource.com/c/go/+/547696
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
The ToText method of Package is the only one with a receiver declared
'p'; all the rest have 'pkg'. Fix it to be consistent.
Change-Id: I2b47c719f4f6f8d87336316b7f80deb1b49e17dc
GitHub-Last-Rev: 7d273b4ef0
GitHub-Pull-Request: golang/go#64912
Reviewed-on: https://go-review.googlesource.com/c/go/+/553335
Run-TryBot: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
The previous TODO comments were somewhat ambiguous. This aims to
provide a clearer understanding of the behavior on Windows.
Windows does not offer a way to peek at the current backlog length, this
is explicitly stated in the winapi for `listen`.
When set to `syscall.SOMAXCONN`, the OS dynamically adjusts the
backlog to a maximum reasonable value. It goes as far as the dotnet
runtime itself introducing a new version of `listen` that does not accept a
backlog parameter to help eliminate the confusion when comparing the
behavior with UNIXes.
The docs also mention that `SOMAXCONN_HINT(N)` can be used, and that
it clips the final computed value between (200, 65535), which suggests
windows might use a `uint16` to back this number. Either way it does not
matter since windows will adjust this value anyway, so I removed the
wrapping TODO as well.
See https://learn.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-listen
Change-Id: I7b2e7cb547467c4bfc572ef0477a58de8c772521
GitHub-Last-Rev: 34e74abffe
GitHub-Pull-Request: golang/go#63549
Reviewed-on: https://go-review.googlesource.com/c/go/+/535475
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This will otherwise trigger an "unusedresult" vet check.
Fixes#64978
Change-Id: Ie19aded0f808d394f389452c3ff7f3edc1ed710d
Reviewed-on: https://go-review.googlesource.com/c/go/+/554196
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Reviewed-by: Bryan Mills <bcmills@google.com>
When building a package, run the cover tool on the collected go/cgo
source files before invoking swig (if swig files are present), as
opposed to running swig and then cover. Running swig adds new Go files
to the "cgo" list, and we want to avoid running those newly generated
files through the cover tool.
Fixes#64661.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Change-Id: I32b6dad5c39fcf5e656c40fb3b44220c69320889
Reviewed-on: https://go-review.googlesource.com/c/go/+/552095
Auto-Submit: Than McIntosh <thanm@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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Also fixup wording across other templates.
Fixes#64890
Change-Id: I6f9ade440b6702ddfafc21ccb7fbc6cabc2b856e
Reviewed-on: https://go-review.googlesource.com/c/go/+/553155
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Previously, the test could fail spuriously if the CGI process's PID
happened to be reused in between checks. That sort of reuse is highly
unlikely on platforms that cycle through the PID space sequentially
(such as Linux), but plausible on platforms that use randomized PIDs
(such as OpenBSD).
Also unskip the test on Windows, since it no longer relies on being
able to send signal 0 to an arbitrary PID.
Also change the expected failure mode of the test to a timeout instead
of a call to t.Fatalf, so that on failure we get a useful goroutine
dump for debugging instead of a non-actionable failure message.
Fixes#57369 (maybe).
Change-Id: Ib7e3fff556450b48cb5e6ea120fdf4d53547479b
Reviewed-on: https://go-review.googlesource.com/c/go/+/554075
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Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
The order of emitting named type and type aliases in the `Walker`'s
`emitType` function is inverted. When the type alias references a basic
type, this causes a panic as the type assertion on `*types.Named` fails.
This change reorders the logic such that type aliases are emitted prior
to this type assertion.
Fixes#64958
Change-Id: I52dbe13999978912ded788d9cf4948103869bcfa
Reviewed-on: https://go-review.googlesource.com/c/go/+/554076
Reviewed-by: Bryan Mills <bcmills@google.com>
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Auto-Submit: Bryan Mills <bcmills@google.com>
due to a recent change, this experiment does not compile at all. This
simply fixes to pass in the new required parameter.
Change-Id: Idce0e72fa436a7acf4923717913deb3a37847fe2
Reviewed-on: https://go-review.googlesource.com/c/go/+/551415
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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This change fixes Request.Clone to correctly work with SetPathValue
by creating fresh copies for matches and otherValues so that
SetPathValue for cloned requests doesn't pollute the original request.
While here, also added a doc for Request.SetPathValue.
Fixes#64911
Change-Id: I2831b38e135935dfaea2b939bb9db554c75b65ef
GitHub-Last-Rev: 1981db1647
GitHub-Pull-Request: golang/go#64913
Reviewed-on: https://go-review.googlesource.com/c/go/+/553375
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Jes Cok <xigua67damn@gmail.com>
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Reviewed-by: Jonathan Amsterdam <jba@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Also, join three paragraphs that should have been one.
Change-Id: Ib1c252f88a1e98afe157d477caa5323c0c8365e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/553715
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Reviewed-by: Eli Bendersky <eliben@google.com>
The backing store for the scavengeIndex chunks slice is allocated on demand
as page allocation occurs. When pageAlloc.grow is called, a range is
allocated from a reserved region, before scavengeIndex.grow is called
to ensure that the chunks needed to manage this new range have a valid
backing store. The valid region for chunks is recorded as the index min
and index max. Any changes need to take the existing valid range into
consideration and ensure that a contiguous valid range is maintained.
However, a bug in the min index handling can currently lead to an existing
part of the chunk slice backing store being zeroed via remapping. Initially,
there is no backing store allocated and both min and max are zero. As soon
as an allocation occurs max will be non-zero, however it is still valid for
min to be zero depending on the base addresses of the page allocations. A
sequence like the following will trigger the bug:
1. A page allocation occurs requiring chunks [0, 512) (after rounding) - a
sysMap occurs for the backing store, min is set to 0 and max is set
to 512.
2. A page allocation occurs requiring chunks [512, 1024) - another sysMap
occurs for this part of the backing store, max is set to 1024, however
min is incorrectly set to 512, since haveMin == 0 (validly).
3. Another page allocation occurs requiring chunks [0, 512) - since min is
currently 512 a sysMap occurs for the already mapped and inuse part
of the backing store from [0, 512), zeroing the chunk data.
Correct this by only updating min when either haveMax == 0 (the
uninitialised case) or when needMin < haveMin (the case where the new
backing store range is actually below the current allocation). Remove
the unnecessary haveMax == 0 check for updating max, as the existing
needMax > haveMax case already covers this.
Fixes#63385
Change-Id: I9deed74c4ffa187c98286fe7110e5d735e81f35f
Reviewed-on: https://go-review.googlesource.com/c/go/+/553135
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
There is no 'of' relationships between float and string. This points to those interfaces with internal type float or string.
Change-Id: I14449f00c192e0d3f8270b433ff508978b7fdf17
GitHub-Last-Rev: f301a8aa52
GitHub-Pull-Request: golang/go#64885
Reviewed-on: https://go-review.googlesource.com/c/go/+/552957
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
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Run-TryBot: Jorropo <jorropo.pgm@gmail.com>
Follow-up on CL 551095.
For #56010.
Change-Id: I8913d6ca96c419c81683e88c6286b05ae1323416
Reviewed-on: https://go-review.googlesource.com/c/go/+/552915
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
For #56010.
Change-Id: Icca987a03d80587dd0e901f596ff7788584893ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/551095
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Add a new section to the Appendix describing what features were
changed or added in which language version.
Add short links with references to the required language version
where relevant.
Fixes#63857.
Change-Id: I5250f856d8688a71602076fcc662aa678d96a5d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/549518
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Commit generated by update.bash.
For #22487.
Change-Id: I4c8a275bb607981c21a0ad5e49b3cae968fc8e64
Reviewed-on: https://go-review.googlesource.com/c/go/+/552575
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fix rendering of link to runtime/debug.ReadGCStats in package overview:
as the package is not imported we must specify the absolute package
name.
Change-Id: I123db49eee05e6812427e19873e628b4e4feb203
Reviewed-on: https://go-review.googlesource.com/c/go/+/549735
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Found by codespell.
Change-Id: I38254f75a8d342a48bbaf6421c681bef7a262dec
Reviewed-on: https://go-review.googlesource.com/c/go/+/551955
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Jes Cok <xigua67damn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
CL 549796 adds race annotations to godebugInc. It uses racerelease
to model a CompareAndSwap. However, a CompareAndSwap is
essentially a load and a store. Modeling it as just racerelease
makes it not synchronized with other racerelease, i.e. other CAS.
For the following execution
thread A B
load, got nil
load, got nil
set *inc
set *inc
racerelease
CAS success
racerelease
CAS fail
load
raceacquire
use *inc (from A)
On thread B, the raceacquire synchronizes with the previous
racerelease, which is not synchronized with racerelease on thread
A, so it doesn't know that the use of *inc on thread B is after
the set on thread A, and will report a race.
Change it to use racereleasemerge, which synchronizes with
previous racerelease and racereleasemerge. So in the case above it
knows thread B's CAS is after thread A's.
Also remove stale comment that was more relevant when the code
used atomic store, where CL 549796 changed to CAS.
Updates #64649.
Change-Id: I17671090a19c0699fcb4e6481e2abd98ef2e5542
Reviewed-on: https://go-review.googlesource.com/c/go/+/551856
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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Reviewed-by: David Chase <drchase@google.com>
The input index to a jump table can be out of range for unreachable code.
Dynamically the compiler ensures that an out-of-range index can never
reach a jump table, but that guarantee doesn't extend to the static
realm.
Fixes#64826
Change-Id: I5829f3933ae5124ffad8337dfd7dd75e67a8ec33
Reviewed-on: https://go-review.googlesource.com/c/go/+/552055
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: David Chase <drchase@google.com>
cmd/vet no longer reports loopclosure bugs within files built at
GoVersion>=1.22.
For #61422.
Change-Id: I6f29373bb236822ece4e7ae35914859538b8d57b
Reviewed-on: https://go-review.googlesource.com/c/go/+/551376
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The valid conversions consider the core types of operands, not just
their underlying type.
This also explains the valid arguments for unsafe.Slice which are
explained in terms of unsafe.Pointer conversions.
unsafe.SliceData simply refers to "slice argument" and we use
similar terminology elsewhere in the spec to denote values that
have a core type of slice (or any other type for that matter).
Leaving alone for now.
Fixes#64452.
Change-Id: I0eed3abbc0606f22358835e5d434f026fe0909c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/551379
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
This patch comments out the remaining "TODO" items in the Go 1.22
release notes temporarily, so as to have RC1 go out with the notes
in a clean (TODO-less) state.
Change-Id: I88f5fef75860fc78b8077dce704ae71c6194a6a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/551257
Reviewed-by: Carlos Amedee <carlos@golang.org>
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Auto-Submit: Than McIntosh <thanm@google.com>
This support was removed in CL 518776.
For #61422.
Fixes#53327.
Change-Id: I8ad0f76aed5f03e32c4c2c5c0001c3f06beb3c7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/548877
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
For #61422.
Updates #60915.
Change-Id: Ia8ca12c163a02223b26c5e4cd4c1b6093978aba4
Reviewed-on: https://go-review.googlesource.com/c/go/+/548875
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This caused other problems, and for the purposes of the Go 1.22
release, we can just roll back to the Go 1.21 behavior and then
decide in January what the correct path forward is.
Revert of CL 546635.
Unfixes #64282.
Fixes#64738.
For #57001.
This reverts commit e44b8b15b1.
Change-Id: I78753c76dcd0bc6dbc90caa17f73248c42e5f64a
Reviewed-on: https://go-review.googlesource.com/c/go/+/551215
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Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Than McIntosh <thanm@google.com>
Per the discussion on the issue, since no problems related to this
appeared since Go 1.20, remove the ability to disable the check for
anonymous interface cycles permanently.
Adjust various tests accordingly.
For #56103.
Change-Id: Ica2b28752dca08934bbbc163a9b062ae1eb2a834
Reviewed-on: https://go-review.googlesource.com/c/go/+/550896
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Add a skip for this test that effectively disables it for 32-bit platforms,
so as to not run into timeouts or OOMs on smaller machines.
Fixes#64789.
Change-Id: I2d428e1dccae62b8bb1a69c5f95699692a282bbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/550975
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Also, add EVP_aead_aes_*_gcm_tls13 to the build, which we will need in a
following CL, to avoid rebuilding the syso twice.
Updates #64717
Updates #62372
Change-Id: Ie4d853ad9b914c1095cad60694a1ae6f77dc22ce
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-boringcrypto
Reviewed-on: https://go-review.googlesource.com/c/go/+/549695
Reviewed-by: Than McIntosh <thanm@google.com>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
This reverts commit https://go.dev/cl/c/go/+/549297
Reason for revert: breaks clang builder
Change-Id: I2321dec9bc1fc20dfafa8a984303b0b5710f8aac
Reviewed-on: https://go-review.googlesource.com/c/go/+/550779
Auto-Submit: Than McIntosh <thanm@google.com>
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Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
go get golang.org/x/tools@83bceaf2 # CL 550395
go mod tidy
go mod vendor
Fixes#64786
Change-Id: Ia9879975eb3e8e4130ded7b2d8ba1277b5811eec
Reviewed-on: https://go-review.googlesource.com/c/go/+/550895
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The @feat.00 comment is outdated, as Go does support SEH on
windows/amd64. While here, simplify it and add a link to the
relevant documentation.
Change-Id: I6e3c786ca4f4809baf46015edf569d06b12f1239
Reviewed-on: https://go-review.googlesource.com/c/go/+/550635
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
