Because issue #47631 has been fixed, remove TODO.
Change-Id: Ic476616729f47485a18a5145bd28c87dd18b4492
Reviewed-on: https://go-review.googlesource.com/c/go/+/573775
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This indirection appears to be unnecessary for linking or linker debugging, and therefore hinders readability.
Since all *oReaders are added to loader.objs *only* via the Preload -> addObj path, before any symbols are examined, there is no possible way the "i" member of this structure is still useful; and is likely a remnant of an earlier design.
Change-Id: Icd880f40bf3299bf1aa0a14cf217268e49ee90c5
GitHub-Last-Rev: dd2d512cbe
GitHub-Pull-Request: golang/go#57460
Reviewed-on: https://go-review.googlesource.com/c/go/+/459456
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Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
This CL is doing now is:
change maxbg to increase test parallelism.
adjust test sequence.
This CL speeds up the go tool dist test,
most of the speed up is due to the fact that the
three time-consuming tests
cmd/internal/testdir and API check and runtime/race
can be done in parallel with the GOMAXPROCS=2 runtime
on a machine with enough CPU cores.
In windows with an 8-core 16-thread CPU,
this CL can complete all other tests before
GOMAXPROCS=2 runtime -cpu=1,2,4 -quick completes.
Fixes#65164
Change-Id: I56ed7031d58be3bece9f975bfc73e5c834d0a4fa
GitHub-Last-Rev: 18cffb770f
GitHub-Pull-Request: golang/go#65703
Reviewed-on: https://go-review.googlesource.com/c/go/+/563916
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Surprisingly, newClientServerTest doesn't ensure that server handlers
are done in its t.Cleanup function. This test's handler can outlive
the test and attempt to log after the test has completed, causing
race detector failures.
Add an explicit call to Server.Shutdown to ensure the handler
has completed.
We should also probably add a Shutdown to clientServerTest.close,
but that's a larger change; this fixes the immediate problem.
Change-Id: Ibe81b4b382c9c8a920b0ff5f76dea6afe69b10f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/573895
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
Change-Id: Ic1dd899fa52fdf9098955fc14a828d2f07da8037
GitHub-Last-Rev: 6e0438ec71
GitHub-Pull-Request: golang/go#66437
Reviewed-on: https://go-review.googlesource.com/c/go/+/573235
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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Run-TryBot: Rob Pike <r@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Change-Id: I020ca2ed8a6af60977f2c492cd742f824906d4ec
GitHub-Last-Rev: b27fda4630
GitHub-Pull-Request: golang/go#66462
Reviewed-on: https://go-review.googlesource.com/c/go/+/573715
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Currently ordering.Advance is one massive switch statement. This isn't
amazing for readability because it's hard to see at a glance what
happens before and after. Some of the state sharing is nice, but
otherwise, it can get confusing quickly (especially where break is used,
and where there are nested switches).
This CL breaks up the switch statement into individual methods on
ordering.Advance which are loaded and dispatched from a table. This CL
uses a table instead of a switch statement because the arguments passed
are all the same each time, and the table can provide a very precise
mapping for each event; with a switch, we'd be tempted to group cases
that call the same handler method together. It also prevents us from
using defer in many cases, which may help clean up the code. (Each case
in the switch is completely self-contained, yet we can't use a defer
because it's function-scoped.)
As an aside, this should also improve performance a bit. The Go compiler
doesn't handle massive irregular functions very well, especially one
with a lot of return points and (previously) a conditionally deferred
call.
Change-Id: I3ef2cf75301c795b6f23da1e058b0ac303fea8bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/566576
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
This change resolves a TODO in the coroutine switch implementation (used
exclusively by iter.Pull at the moment) to enable tracing. This was
blocked on eliminating the atomic load in the tracer's "off" path
(completed in the previous CL in this series) and the addition of new
tracer events to minimize the overhead of tracing in this circumstance.
This change introduces 3 new event types to support coroutine switches:
GoCreateBlocked, GoSwitch, and GoSwitchDestroy.
GoCreateBlocked needs to be introduced because the goroutine created for
the coroutine starts out in a blocked state. There's no way to represent
this in the tracer right now, so we need a new event for it.
GoSwitch represents the actual coroutine switch, which conceptually
consists of a GoUnblock, a GoBlock, and a GoStart event in series
(unblocking the next goroutine to run, blocking the current goroutine,
and then starting the next goroutine to run).
GoSwitchDestroy is closely related to GoSwitch, implementing the same
semantics except that GoBlock is replaced with GoDestroy. This is used
when exiting the coroutine.
The implementation of all this is fairly straightforward, and the trace
parser simply translates GoSwitch* into the three constituent events.
Because GoSwitch and GoSwitchDestroy imply a GoUnblock and a GoStart,
they need to synchronize with other past and future GoStart events to
create a correct partial ordering in the trace. Therefore, these events
need a sequence number for the goroutine that will be unblocked and
started.
Also, while implementing this, I noticed that the coroutine
implementation is actually buggy with respect to LockOSThread. In fact,
it blatantly disregards its invariants without an explicit panic. While
such a case is likely to be rare (and inefficient!) we should decide how
iter.Pull behaves with respect to runtime.LockOSThread.
Lastly, this change also bumps the trace version from Go 1.22 to Go
1.23. We're adding events that are incompatible with a Go 1.22 parser,
but Go 1.22 traces are all valid Go 1.23 traces, so the newer parser
supports both (and the CL otherwise updates the Go 1.22 definitions of
events and such). We may want to reconsider the structure and naming of
some of these packages though; it could quickly get confusing.
For #61897.
Change-Id: I96897a46d5852c02691cde9f957dc6c13ef4d8e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565937
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
This reverts CL 519235.
Reason for revert: Proposal is still in incoming.
For #62020
Change-Id: Icccb930209f36097f5d930c01eda6b5042bdddc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/573516
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Change-Id: Ie8ac82b6a1685299a92ec59acbd80b6de38e377c
GitHub-Last-Rev: 325df8d148
GitHub-Pull-Request: golang/go#66457
Reviewed-on: https://go-review.googlesource.com/c/go/+/573615
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
When GORISCV64 enables rva22u64, use SEXTB for MOVB, SEXTH for MOVH, ZEXTH
for MOVHU and ADDUW for MOVWU. These are single instruction alternatives
to the two instruction shift sequences that are needed otherwise.
Change-Id: Iea5e394f57e238ae8771400a87287c1ee507d44c
Reviewed-on: https://go-review.googlesource.com/c/go/+/572736
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Provide appropriate implementations of Tc{get,set}pgrp and export
these for use in the TestForeground* tests in exec_unix_test.go.
This avoids calling ioctl via syscall.Syscall on BSDs.
Fixes#59667
Updates #63900
Change-Id: Ice4dcedae1f0931c026bddf33043d3864a52d44e
Reviewed-on: https://go-review.googlesource.com/c/go/+/572155
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Run-TryBot: Joel Sing <joel@sing.id.au>
"strSliceContains" is replaced by "slices.Contains".
Replace "sort.Strings" with "slices.Sort" since it becomes a wrapper
of "slices.Sort" from Go 1.22.
"headerSorter" no longer has to implement "sort.Interface".
We use "slice.SortFunc" to sort kvs.
Change-Id: Ic29b4c3db147c16079575eca7ad6ff6c0f581188
GitHub-Last-Rev: 78221d5aa2
GitHub-Pull-Request: golang/go#66440
Reviewed-on: https://go-review.googlesource.com/c/go/+/573275
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
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Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
Converting *void directly to mach_port_t causes newer clang to throw a
void-pointer-to-int-cast warning/error.
Change-Id: I709955d4678bed3f690a8337ce85fd8678d217bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/573415
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Change-Id: I1391ec36063dc609a61cc3b37827a56c7cf97c03
Reviewed-on: https://go-review.googlesource.com/c/go/+/539839
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Change-Id: I2871e98eaf13f207e467120592d604761be5fe17
Reviewed-on: https://go-review.googlesource.com/c/go/+/535084
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Add a new method TB.SetGOMAXPROCS which sets variable of GOMAXPROCS.
This method aims to set a variable for the isolated lifetime of the test and cleans up.
And unset this when the test ends.
This method disables the test or benchmark from running in
parallel.
Fixes: #62020
Change-Id: Iae44109d0def35cc47049c3ca4cd5306173d52ee
Signed-off-by: sivchari <shibuuuu5@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/519235
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Remove dynamic checks for atomic instructions for ARM64 targets that support LSE extension.
For #66131
Change-Id: I0ec1b183a3f4ea4c8a537430646e6bc4b4f64271
Reviewed-on: https://go-review.googlesource.com/c/go/+/569536
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Shu-Chun Weng <scw@google.com>
The LockThreadExit tests in the runtime have been observed to fail after
reading /proc/self/task/<tid>/stat and blindly assuming its contents
followed a specific format. The parsing code is also wrong, because
splitting by spaces doesn't work when the comm name contains a space.
It also ignores errors without reporting them, which isn't great.
This change rewrites tidExists to be more robust by using
/proc/self/task/<tid>/status instead. It also modifies tidExists'
signature to report an error to its caller. Its caller then prints that
error.
Ignoring a non-not-exist error with opening this file is the likely but
unconfirmed cause of #65736 (ESRCH). This change also checks for that
error explicitly as an optimistic fix.
Fixes#65736.
Change-Id: Iea560b457d514426da2781b7eb7b8616a91ec23b
Reviewed-on: https://go-review.googlesource.com/c/go/+/567938
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Constant bools are like constant 1-byte values, they memcombine just fine.
(There are still trickier cases that this pass doesn't catch
yet, see TODO at memcombine.go:503.)
Fixes#66413
Change-Id: Ia67cf72ed1c416e27ac22da443bd88a3f09a6cc8
Reviewed-on: https://go-review.googlesource.com/c/go/+/573416
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Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Add check for deprecations in PackagesAndErrorsOutsideModule. This affects go run/install outside module when run in module-aware mode.
Fixes#59230
Change-Id: I106df36a856894fb1b634decfa812e31cf88fe74
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
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The RtlGetNtVersionNumbers function is not documented by Microsoft.
Use RtlGetVersion instead, which is documented and available on all
supported versions of Windows.
Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest,gotip-windows-arm64
Change-Id: Ibaf0e2c28e673951476c5d863a829fd166705aea
Reviewed-on: https://go-review.googlesource.com/c/go/+/571015
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The net package currently uses windows.SupportFullTCPKeepAlive to
know if TCP_KEEPIDLE, TCP_KEEPINTVL, and TCP_KEEPCNT are available.
This function is a wrapper over the undocumented RtlGetNtVersionNumbers
API, which tests if the Windows version is at least 10.0.16299. This
approach artificially limits the use of TCP_KEEPCNT, which is
available since Windows 10.0.15063. It also uses an undocumented API,
which is not something we want to rely on.
This CL removes windows.SupportFullTCPKeepAlive in favor of dedicated
proves for each option which are not based on the Windows version.
While here, remove some assertions in setKeepAliveCount. It is better
to let the system decide if the value is valid or not.
Updates #65817.
Cq-Include-Trybots: luci.golang.try:gotip-windows-arm64
Change-Id: I0fe70d46c8675eab06c0e4628cf68571b6e50b80
Reviewed-on: https://go-review.googlesource.com/c/go/+/570077
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Updates x/net/http2 to git rev 89f602b7bbf237abe0467031a18b42fc742ced08
http2: validate client/outgoing trailers
https://golang.org/cl/572655 (updates #64766)
and also updates the vendored version of golang.org/x/net per:
$ go get golang.org/x/net@89f602b7bb
$ go mod tidy
$ go mod vendor
$ go generate -run bundle std
Change-Id: Ibd0e819d9125e72665bafec53ba626e257b594a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/572676
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Change-Id: I38ebd280c200b30692eb35640327034a5e898bd0
Reviewed-on: https://go-review.googlesource.com/c/go/+/570376
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
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The godoc for sync.Map.CompareAndSwap does not document the meaning
of its return value. Document it by giving it a name.
Change-Id: I50ad9c078a7885f5ce83489d66d138d491c35861
Reviewed-on: https://go-review.googlesource.com/c/go/+/572657
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Ensure that errors are reported if an HTTP request unexpectedly fails.
For #56587
Change-Id: I1adfb4fedc24d4177caf54e34c5033267e32caa6
Reviewed-on: https://go-review.googlesource.com/c/go/+/486075
Reviewed-by: Bryan Mills <bcmills@google.com>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
[Re-land of CL 567695 without further changes.]
This CL refactors the interleaved fixpoint algorithm so that calls can
be inlined in any order. This has no immediate effect, but it will
allow a subsequent CL to prioritize calls by inlheur score.
Change-Id: I8fd6748f0347fd696daee815bf7c9c183572c1ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/573096
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Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Move the OPAREN skipping logic from typecheck into typecheck1, so that
it only applies to ParenExprs with Typecheck()==0. This should allow
CL 567695 to be re-landed, which uses ParenExprs as placeholders in
the AST.
Fixes#66261.
Change-Id: I606b7bad0cf1c0447e60d6da68d1d66db00863f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/573095
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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The OPARENs inserted here used to be necessary for better error
diagnostics, but now those are handled by types2.
Change-Id: I88d50d34d9e00cdd7d0fb32f6e460a179345a787
Reviewed-on: https://go-review.googlesource.com/c/go/+/573115
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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CL 511516 added the method but didn't include a release note for it
because it was authored and tested before the new release note flow.
For #61472.
Change-Id: I38f73e97093a2badaea658ed430e174b73e35b3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/571278
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
On amd64, we always zero-extend when loading arguments from the stack.
On arm64, we extend based on the type. This causes problems with
zeroUpper*Bits, which reports the top bits are zero when they aren't.
Fix it to use the type to decide if the top bits are really zero.
For tests, only f32 currently fails on arm64. Added other tests
just for future-proofing.
Update #66066
Change-Id: I2f13fb47198e139ef13c9a34eb1edc932eea3ee3
Reviewed-on: https://go-review.googlesource.com/c/go/+/571135
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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Implements a new method http.Request.CookiesName, that allows
retrieving all cookies that match the given name.
Fixes#61472
Change-Id: I405d8771b4195af9ff6b4dfde3cfcd316c23b70c
GitHub-Last-Rev: 6ad0094995
GitHub-Pull-Request: golang/go#61473
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Damien Neil <dneil@google.com>
Add assembler support for Zba, Zbb, Zbs extensions, which are
mandatory in the rva22u64 profile. These can be used to accelerate
address computation and bit manipulation.
Change-Id: Ie90fe6b76b1382cf69984a0e71a72d3cba0e750a
Reviewed-on: https://go-review.googlesource.com/c/go/+/559655
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Zero out elements before shrinking the slice to avoid memory leaks.
Fixes#66410
Change-Id: I8f64c21455761f7f7c8b6fee0b6450b98f691d91
GitHub-Last-Rev: b15586e801
GitHub-Pull-Request: golang/go#66419
Reviewed-on: https://go-review.googlesource.com/c/go/+/572956
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
This change validates outbound client request trailers
just like we do for headers. This helps prevent header
injection or other sorts of smuggling from easily being
performed using the standard HTTP client.
Fixes#64766
Change-Id: Idb34df876a0c308b1f57e9ae2695b118ac6bcc2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/572615
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
Provide appropriate implementations of internal/syscall/unix.Tcsetpgrp
and use this for runSessionLeader in os/signal/signal_cgo_test.go.
This avoids calling syscall.Syscall with SYS_IOCTL on BSDs.
Updates #59667
Updates #63900
Change-Id: Ifa4696bba9f1eb68e81e7103f030bc254adaf0af
Reviewed-on: https://go-review.googlesource.com/c/go/+/540020
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
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The runtime.elf_* symbols are assembly functions which are used
to support the gcc/llvm -Os option when used with cgo.
When compiling Go for shared code, we attempt to strip out the
TOC regenation code added by the go assembler for these symbols.
This causes the symbol to no longer appear as an assembly
function which causes problems later on when handling other
implicit symbols.
Avoid adding a TOC regeneration prologue to these functions
to avoid this issue.
Fixes#66265
Change-Id: Icbf8e4438d177082a57bb228e39b232e7a0d7ada
Reviewed-on: https://go-review.googlesource.com/c/go/+/571835
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
It's been good since Sierra: it never fails, it's faster, it's available
on iOS (see #47812), and it still handles forks and reseeding.
On a M2 with macOS 14.3.1:
│ sec/op │ sec/op vs base │
Read/32-8 413.7n ± 3% 249.7n ± 3% -39.65% (p=0.000 n=10)
Read/4K-8 7.097µ ± 6% 1.261µ ± 2% -82.24% (p=0.000 n=10)
│ B/s │ B/s vs base │
Read/32-8 73.76Mi ± 3% 122.25Mi ± 3% +65.73% (p=0.000 n=10)
Read/4K-8 550.5Mi ± 6% 3099.0Mi ± 2% +462.99% (p=0.000 n=10)
arc4random(3) would be a good replacement for getentropy(2) on FreeBSD
and NetBSD as well, but we don't get as easy access to libc there.
Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64-longtest,gotip-darwin-amd64-nocgo,gotip-darwin-arm64_13,gotip-darwin-amd64_11,gotip-darwin-amd64_12,gotip-darwin-amd64_13,gotip-darwin-amd64_14
Change-Id: Ia76824853be92b4d1786e23592a1d2ef24d8907d
Reviewed-on: https://go-review.googlesource.com/c/go/+/569655
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
The len parameter runtime.asan{read,write} is of type uintptr. Match its
type in Read and Write.
For #64611
Change-Id: I0be278c38a357e600521ced87c0e23038a11e8a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/572755
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
On Linux, both mprotect() and mmap() acquire the mmap_lock (in writer mode),
posing scalability challenges.
The mmap_lock (formerly called mmap_sem) is a reader/writer lock that controls
access to a process's address space; before making changes there (mapping in a
new range, for example), the kernel must acquire that lock.
Page-fault handling must also acquire mmap_lock (in reader mode) to ensure that
the address space doesn't change in surprising ways while a fault is being resolved.
A process can have a large address space and many threads running (and incurring
page faults) concurrently, turning mmap_lock into a significant bottleneck.
While both mmap() and mprotect() are protected by the mmap_lock, the shorter
duration of mprotect system call, due to their simpler nature, results in a reduced
locking time for the mmap_lock.
Change-Id: I7f929544904e31eab34d0d8a9e368abe4de64637
GitHub-Last-Rev: 6f27a216b4
GitHub-Pull-Request: golang/go#65038
Reviewed-on: https://go-review.googlesource.com/c/go/+/554935
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Fixes#66239
Change-Id: I8210682c0cf4285b950e9fabe687b7ad2369835c
Reviewed-on: https://go-review.googlesource.com/c/go/+/570397
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
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Change-Id: Ie8fa25d5e326efd7d3c9b72203783110d9e22ce8
Reviewed-on: https://go-review.googlesource.com/c/go/+/572215
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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