There were a bit too many conditional branches in the old code,
resulting in a poor readability. It could be more concise by reducing
and consolidating some of the conditions.
Furthermore, how we've determined whether or not the data transimission
was handled by sendfile(2) seems inappropriate, because it marked the
operation as unhandled whenever any non-retryable error occurs from
calling sendfile(2), it doesn't look like a right approach, at least
this is an inconsistent behavior with what we've done in Splice.
Related to #64044
Change-Id: Ieb65e0879a8841654d0e64a1263a4e43179df1ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/537275
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Bryan Mills <bcmills@google.com>
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Fixes#62484
Change-Id: I5d8950dedf86af48f42a641940b34e62aa2cddcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/558995
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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The XML specification requires an XML declaration, if present, to only
appear at the very beginning of the document, not even preceded by
whitespace. The parser currently accepts it at any part of the input.
Rejecting whitespace at the beginning of the file might break too many
users. This change instead only rejects an XML declaration preceded by
a non-whitespace token *and* allows the Encoder to emit whitespace
before an XML declaration. This means that a token stream produced by
the Decoder can be passed to the Encoder without error, while we still
don't emit clearly invalid XML.
This might break programs depending on Decoder allowing arbitrary XML
before the XML declaration.
Fixes#65691.
Change-Id: Ib1d4b3116aee63f40fd377f90595780b4befd1ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/564035
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This function is copied to x/exp/trace. In https://go.dev/cl/566255 a
change is made where the source is a bytes.Reader instead of a
bufio.Reader from one of the two callers. Change the prototype here
instead of diverging the implementations.
Change-Id: I594224663996eadbc8c388442d68ac5706c52c8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/566236
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
In some places we can't use unreachable() because it does
not terminate control flow and we need to resort to panic.
Be consistent and just use panic("unreachable") everywhere.
This also opens the door to reporting more specific panic
messages.
Mechanical change: s/unreachable()/panic("unreachable")/
Minor cleanup for better consistency.
Change-Id: I6b52af7c21dcfaa1ca19839d14040552db5d4cb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/566135
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
This CL reduces the amount of code that needs to be maintained
manually by about 400 LOC.
Change-Id: I03f77c8067aebfdb2a1cce6827ded733ff55e1cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/565837
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Auto-Submit: Robert Griesemer <gri@google.com>
This CL reduces the amount of code that needs to be maintained
manually by about 600 LOC.
Change-Id: I7107c8050075281bf6840a9f5234d70e09734ce6
Reviewed-on: https://go-review.googlesource.com/c/go/+/565836
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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There are two separate cases here:
The base case is simple: a concurrent call to SetCrashOutput while
panicking will switch the crash FD, which could cause the first half of
writes to go to the old FD, and the second half to the new FD. This
isn't a correctness problem, but would be annoying to see in practice.
Since it is easy to check for, I simply drop any changes if panicking is
already in progress.
The second case is more important: SetCrashOutput will close the old FD
after the new FD is swapped, but writeErrData has no locking around use
of the fd, so SetCrashOutput could close the FD out from under
writeErrData, causing lost writes. We handle this similarly, by not
allowing SetCrashOutput to close the old FD if a panic is in progress,
but we have to be more careful about synchronization between
writeErrData and setCrashFD to ensure that writeErrData can't observe
the old FD while setCrashFD allows close.
For #42888.
Change-Id: I7270b2cc5ea58a15ba40145b7a96d557acdfe842
Reviewed-on: https://go-review.googlesource.com/c/go/+/559801
Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Support go version with patch release(e.g. 1.21.0)
and release candidates(e.g. 1.21rc1)
when parsing the go version in the fix command
by using new "go/version" package.
Fixes#62584
Change-Id: I0ec16137c7a396c68039d374c770c4021fb54b4e
GitHub-Last-Rev: 76bced5c48
GitHub-Pull-Request: golang/go#62586
Reviewed-on: https://go-review.googlesource.com/c/go/+/527342
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Reviewed-by: Russ Cox <rsc@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Alex Bozhenko <alexbozhenko@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Change-Id: Idcfd649b8b8c8b47f5622702969bf2d43aa57354
GitHub-Last-Rev: cd38bee191
GitHub-Pull-Request: golang/go#65835
Reviewed-on: https://go-review.googlesource.com/c/go/+/565516
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
For #65355
Change-Id: I5fefe30dcb520159de565e61dafc74a740fc8730
Reviewed-on: https://go-review.googlesource.com/c/go/+/559715
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Amend FindProcess to use pidfdFind, and make it return ErrProcessDone
if pidfdFind is used and the process is not found.
Since this is a change in API, introduce GODEBUG osfinderr=0 setting
to disable the feature.
Change-Id: I724c6f622f0c99f21a70b864cf7cf2b8836869ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/542699
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Reviewed-by: Than McIntosh <thanm@google.com>
Fixes#65854.
For #65778. // for x/tools/cmd/gotype
Change-Id: I67d4644b28e831926fc6c233098aa1755c57162f
Reviewed-on: https://go-review.googlesource.com/c/go/+/565835
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Use Process.handle field to store pidfd, and make use of it. Only use
pidfd functionality if all the needed syscalls are available.
1. StartProcess: obtain the pidfd from the kernel, if available,
using the functionality added by CL 520266. Note we could not modify
syscall.StartProcess to return pidfd directly because it is a public
API and its callers do not expect it, so we have to use ensurePidfd
and getPidfd.
2. (*Process).Kill: use pidfdSendSignal, if the syscall is available
and pidfd is known. This is slightly more complicated than it should
be, since the syscall can be blocked by e.g. seccomp security policy,
therefore the need for a function to check if it's actually working,
and a soft fallback to kill. Perhaps this precaution is not really
needed.
3. (*Process).Wait: use pidfdWait, if available, otherwise fall back to
using waitid/wait4. This is also more complicated than expected due
to struct siginfo_t idiosyncrasy.
NOTE pidfdSendSignal and pidfdWait are used without a race workaround
(blockUntilWaitable and sigMu, added by CL 23967) because with pidfd,
PID recycle issue doesn't exist (IOW, pidfd, unlike PID, is guaranteed
to refer to one particular process) and thus the race doesn't exist
either.
For #62654.
Updates #13987.
Change-Id: I22ebcc7142b16a3a94c422d2f32504d1a80e8a8f
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/528438
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
SetCrashOutput dup's the input file for safety, but I don't think that
the docs are very clear about what the caller can/should do with f. "it
does not close the previous file" is particularly confusing, as it does
close the previous FD (but not the previous passed os.File).
Expand and attempt to clarify the explanation, borrowing wording from
net.FileConn, which also dup's the input os.File.
For #42888.
Change-Id: I1c96d2dce7899e335d8f1cd464d2d9b31aeb4e5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/559800
Reviewed-by: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
acquireThread is already waiting on a channel, so
it can be easily wired up to support context cancellation.
This change will make sure that contexts that are
cancelled at the acquireThread stage (when the limit of
threads is reached) do not queue unnecessarily and cause
an unnecessary cgo call that will be soon aborted by
the doBlockingWithCtx function.
Updates #63978
Change-Id: I8ae4debd51995637567d8f51c6f1ed60f23d6c0c
GitHub-Last-Rev: 4189b9faf0
GitHub-Pull-Request: golang/go#63985
Reviewed-on: https://go-review.googlesource.com/c/go/+/539360
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
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This CL reduces the amount of code that needs to be maintained
manually by about 500 LOC.
Change-Id: I643bea15203f7a916ef78b2738f125aa5b312eed
Reviewed-on: https://go-review.googlesource.com/c/go/+/565438
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>
This CL reduces the amount of code that needs to be maintained
manually by about 300 LOC.
Change-Id: I749e47668e90e77e99109005fbe19045d4a5ad29
Reviewed-on: https://go-review.googlesource.com/c/go/+/565437
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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Added new conversion functions to generate_test.go to handle the
translation of builtins_test.go.
Simplify some existing code by using the renameMap mechanism.
This CL reduces the amount of code that needs to be maintained
manually by about 250 LOC.
Change-Id: I1a455c1921512fb3647fd92ac7c278b1b80ea884
Reviewed-on: https://go-review.googlesource.com/c/go/+/562837
Reviewed-by: Robert Findley <rfindley@google.com>
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Auto-Submit: Robert Griesemer <gri@google.com>
Minor changes to types2.builtin.go to simplify automatic translation.
Added new conversion functions to generate_test.go to handle the
translation of builtins.go.
While at it, added additional helper functions to generate_test.go
and simplified some of the existing conversion functions.
This CL reduces the amount of code that needs to be maintained
manually by about 1000 LOC.
Change-Id: I1bd5c8eda0c0194a0b47e69882d2b987d91eef50
Reviewed-on: https://go-review.googlesource.com/c/go/+/562835
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Auto-Submit: Robert Griesemer <gri@google.com>
We're making the following changes:
* From cmd/go/flag-<flagname> to cmd/go/flag:<flagname>
* From cmd/go/<subcommand-name>:flag-<flagname> to
cmd/go/flag:<subcommand-name>-<flagname>
* From cmd/go:subcommand-<subcommand-name> to
cmd/go/subcommand:<subcommand-name>
Change-Id: Id682840bb4330fceeb070fc69203d0bfb03f3a29
Reviewed-on: https://go-review.googlesource.com/c/go/+/564857
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Reviewed-by: Robert Findley <rfindley@google.com>
This change fixes a bug where we incorrectly filtered out the main
modules from the beginning of the build list before verifying them. We
made the assumption that the first MainModules.Len() entries of the
build list were the main modules, but now it can contain the go and
toolchain version entries, so removing the first MainModules.Len()
entries could leave main module names in the build list if any of
their names sorted after the string 'go'.
Fixes#62663
Change-Id: I35ab6857a556f58d306303322afe24c48fc8b38f
Reviewed-on: https://go-review.googlesource.com/c/go/+/565378
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This CL adds rounding modes for riscv64 floating point conversion
instructions by suffix with 5 modes: RNE, RTZ, RDN, RUP and RMM.
For example, for round to nearest (RNE), we can use `FCVTLD.RNE`
According to RISCV manual 8.7 and 9.5, we changed these
conversion instructions:
FCVTWS
FCVTLS
FCVTWUS
FCVTLUS
FCVTWD
FCVTLD
FCVTWUD
FCVTLUD
Note: Round towards zero (RTZ) by default for all these instructions above.
Change-Id: I491e522e14d721e24aa7f528ee0c4640c54c5808
Reviewed-on: https://go-review.googlesource.com/c/go/+/504736
Reviewed-by: Joel Sing <joel@sing.id.au>
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Follows up CL 542275
Fixes#65809
Change-Id: Iba01efb4ff0fbb7a67840875322f0338337ebb78
Reviewed-on: https://go-review.googlesource.com/c/go/+/565315
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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These primitives will be used by the new And/Or sync/atomic apis.
For #61395
Change-Id: Ia9b4877048002d3d7d1dffa2311d0ec5f38e4ee5
GitHub-Last-Rev: 20dea110c8
GitHub-Pull-Request: golang/go#63318
Reviewed-on: https://go-review.googlesource.com/c/go/+/531678
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Reviewed-by: Keith Randall <khr@golang.org>
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The jump table symbol is accessed only from the function symbol
(in the same package), so it can be static. Also, if the function
is DUPOK and it is, somehow, compiled differently in two different
packages, the linker must choose the jump table symbol associated
to the function symbol it chose. Currently the jump table symbol
is DUPOK, so that is not guaranteed. Making it static will
guarantee that, as each copy of the function symbol refers to its
own jump table symbol.
For #65783.
Change-Id: I27e051d01ef585d07700b75d4dfac5768f16441e
Reviewed-on: https://go-review.googlesource.com/c/go/+/565535
Reviewed-by: Keith Randall <khr@google.com>
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types2 handles all constant-related bounds checks in user Go code now,
so it's safe to remove the check from typecheck, avoid the inconsistency
with type parameter.
Fixes#65417
Change-Id: I82dd197b78e271725d132b5a20450ae3e90f9abc
Reviewed-on: https://go-review.googlesource.com/c/go/+/560575
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Skip two build reproducibility tests (build_issue48319 and
build_plugin_reproducible) on Darwin if GO_BUILDER_NAME is set until
issue 64947 can be resolved; on the LUCI darwin longtest builder the
more contemporary version of Xcode is doing things that are unfriendly
to Go's build reproducibility.
For #64947.
Change-Id: Iebd433ad6dfeb84b6504ae9355231d897d8ae174
Reviewed-on: https://go-review.googlesource.com/c/go/+/565376
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This reverts CL 564576.
Reason for revert: flaky on linux-386-longtest
Fixes#65823.
Change-Id: I20e11f15af050eae9a6c15e756a52ffad327c458
Reviewed-on: https://go-review.googlesource.com/c/go/+/565536
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The internal/msan package contains helper functions for manually
instrumenting code for the memory sanitizer. It exports the private
msan routines in runtime unconditionally, making the functions a
no-op if the build flag "msan" is not present.
For #64611
Change-Id: If43f29e112ac79a47083c9dbdf2c61a0641e80b1
GitHub-Last-Rev: 0a644bd6f1
GitHub-Pull-Request: golang/go#64637
Reviewed-on: https://go-review.googlesource.com/c/go/+/548676
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Code added in CL #558755 and CL #561315 (both via github) were not
appropriately formatted. Run gofmt to address this.
Change-Id: Iaf7abca9c2ad4e0fabecc417234b743b6b15e9c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/564719
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Updates #63978
Change-Id: I39a5c812b4f604baf4ca5ffcff52b8dc17d4990d
GitHub-Last-Rev: 4ab6e262f4
GitHub-Pull-Request: golang/go#63990
Reviewed-on: https://go-review.googlesource.com/c/go/+/539361
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Reviewed-by: Roland Shoemaker <roland@golang.org>
This further reduces the differences between go/types and types2.
Change-Id: I1426c2f7c58e2d1123d93f68fbdda01b0cc2d46e
Reviewed-on: https://go-review.googlesource.com/c/go/+/562836
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CL488855 added a broken go:generate statement, which referenced a
file which didn't exist. Remove the statement.
The generator is in the commit message for CL488855, if it is ever
actually needed.
Change-Id: I6b18d5b4f38f82b27681b9b758e9642543aa6e43
Reviewed-on: https://go-review.googlesource.com/c/go/+/565435
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These link in libgcc functions which require more advanced handling
of small toc relocations. The internal linker is not capable of
placing these functions to ensure they are always resolvable.
Change-Id: Idd4a0264bfbbd7016472120dc4bee84814e8c2eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/564235
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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Google/pprof changed the master branch to main, so it might be better to update it to the latest.
Change-Id: Id29aca80a9a83a9c10da215180ad65816bc88936
GitHub-Last-Rev: 0023c28dc0
GitHub-Pull-Request: golang/go#65792
Reviewed-on: https://go-review.googlesource.com/c/go/+/565177
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: I5a68389a68875dbb2f6875de3f64f63dd7ca1af7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565055
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Change-Id: Ifdc6e22d52317cdb90a607ac4d72437d4d6b33e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/564716
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Fixes#65443
Change-Id: I9ad4689b36e87ee930d35a38322a8797896483b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/560615
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This makes the docs up-to-date by running doc/mksyntaxgo from the google/re2 repo.
Change-Id: I80358eed071e7566c85edaeb1cc5514a6d8c37a7
GitHub-Last-Rev: 0f8c8df4f2
GitHub-Pull-Request: golang/go#65249
Reviewed-on: https://go-review.googlesource.com/c/go/+/558136
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This reduces the go test hash/maphash time
by more than half.
Change-Id: If184ca99544809c86b4c1baeb45d3afede91b41a
GitHub-Last-Rev: 440c35f8b5
GitHub-Pull-Request: golang/go#65739
Reviewed-on: https://go-review.googlesource.com/c/go/+/564576
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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A recent change to Transport.dialConnFor introduced an early return that
skipped dialing. This path did not call decConnsPerHost, which can cause
subsequent HTTP calls to hang if Transport.MaxConnsPerHost is set.
Fixes: #65705
Change-Id: I157591114b02a3a66488d3ead7f1e6dbd374a41c
Reviewed-on: https://go-review.googlesource.com/c/go/+/564036
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Fixes#62254Fixes#48622
Change-Id: Ida598e7fa914c8737fdbc1c813bcd68adb5119c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/542275
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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TryBot-Result: Gopher Robot <gobot@golang.org>
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CL https://golang.org/cl/37879 migrates DNS message parsing to the golang.org/x/net/dns/dnsmessage package. However, during the modification of the "lame referral" error check introduced by CL https://golang.org/cl/22428, a condition was overlooked. This omission results in unexpected retries when a DNS server returns an empty response (not an invalid response, but one that includes an additional section).
Fixes#57697Fixes#64783
Change-Id: I203896aa2902c305569005c1712fd2f9f13a9b6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/550435
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Commit-Queue: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dexter Ouyang <kkhaike@gmail.com>
