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51270 Commits

Author SHA1 Message Date
Michael Matloob
85a8e1786a cmd/go: fix hang in workspaces
golang.org/cl/365234 incorrectly had pruningForGoVersion always return
workspace pruning instead of just returning workspace pruning at the top
level, which broke the proper determination of pruning for dependency
packages. Fix that code, and also fix a hang that resulted because the
module loading code keeps loading dependencies until it reaches a pruned
module or an unpruned module it already saw, so it could get stuck in a
cycle. 

Change-Id: I8911f7d83aaee5870c43ef0355abbd439f15d4f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/366775
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 17:48:45 +00:00
Robert Findley
6b609110fd cmd/compile/internal/types2: sort to reduce computational complexity of initOrder
This is a clean port of CL 369434 to types2.

Change-Id: I3f9f80757bfbefb7b0417eef9e7b7c74c4c100b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/369474
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-12-08 17:34:34 +00:00
Robert Findley
ac7e950d38 go/types: sort to reduce computational complexity of initOrder
Our calculation of initOrder builds the dependency graph and then
removes function nodes approximately at random. While profiling, I
noticed that this latter step introduces a superlinear algorithm into
our type checking pass, which can dominate type checking for large
packages such as runtime.

It is hard to analyze this rigorously, but to give an idea of how such a
non-linearity could arise, suppose the following assumptions hold:
- Every function makes D calls at random to other functions in the
  package, for some fixed constant D.
- The number of functions is proportional to N, the size of the package.

Under these simplified assumptions, the cost of removing an arbitrary
function F is P*D, where P is the expected number of functions calling
F. P has a Poisson distribution with mean D.

Now consider the fact that when removing a function F in position i, we
recursively pay the cost of copying F's predecessors and successors for
each node in the remaining unremoved subgraph of functions containing F.
With our assumptions, the size of this subgraph is proportional to
(N-i), the number of remaining functions to remove.

Therefore, the total cost of removing functions is proportional to

  P*D*Σᴺ(N-i)

which is proportional to N².

However, if we remove functions in ascending order of cost, we can
partition by the number of predecessors, and the total cost of removing
functions is proportional to

  N*D*Σ(PMF(X))

where PMF is the probability mass function of P. In other words cost is
proportional to N.

Assuming the above analysis is correct, it is still the case that the
initial assumptions are naive. Many large packages are more accurately
characterized as combinations of many smaller packages. Nevertheless, it
is intuitively clear that removing expensive nodes last should be
cheaper.

Therefore, we sort by cost first before removing nodes in
dependencyGraph.

We also move deletes to the outer loop, to avoid redundant deletes. By
inspection, this avoids a bug where n may not have been removed from its
successors if n had no predecessors.

name                               old time/op  new time/op  delta
Check/runtime/funcbodies/noinfo-8   568ms ±25%    82ms ± 1%   -85.53%  (p=0.000 n=8+10)

name                               old lines/s  new lines/s  delta
Check/runtime/funcbodies/noinfo-8   93.1k ±56%  705.1k ± 1%  +657.63%  (p=0.000 n=10+10)

Updates #49856

Change-Id: Id2e70d67401af19205e1e0b9947baa16dd6506f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/369434
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 17:24:46 +00:00
Austin Clements
c759ec2284 doc/go1.18: clarify additions to net package API
For #47694.

Updates #46518.

Change-Id: Ife3a8d3d6a1c50f55b5ab15730d5a6bd3ec512e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/370134
Trust: Austin Clements <austin@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2021-12-08 17:04:27 +00:00
Russ Cox
f5b5939c28 build: for default bootstrap, use Go 1.17 if present, falling back to Go 1.4
Preparation for #44505, but safe for Go 1.18.
Also fixes the default build on Macs, at least for
people who have a $HOME/go1.17 or have run

	go install golang.org/dl/go1.17@latest
	go1.17 download

Replay of CL 369914 after revert in CL 370138.
Only change is adding 'export GOROOT_BOOTSTRAP' in make.bash.

Change-Id: I8ced4e87a9dc0f05cc49095578b401ae6212ac85
Reviewed-on: https://go-review.googlesource.com/c/go/+/370274
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 16:50:04 +00:00
Rhys Hiltner
46db6aa157 runtime: fix flake in TestCgoPprofThread
If the test's main goroutine receives a SIGPROF while creating the
C-owned thread for the test, that sample will appear in the resulting
profile. The root end of that stack will show a set of Go functions. The
leaf end will be the C functions returned by the SetCgoTraceback
handler, which will confuse the test runner.

Add a label to the main goroutine while it calls in to C, so all profile
samples that triggered the SetCgoTraceback handler are either correct,
or can easily be excluded from the test's analysis. (The labels will not
apply to the resulting C-owned thread, which does not use goroutines.)

Fixes #43174

Change-Id: Ica3100ca0f191dcf91b30b0084e8541c5a25689f
Reviewed-on: https://go-review.googlesource.com/c/go/+/370135
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 15:45:29 +00:00
Bryan C. Mills
3042ba34db net/smtp: skip TestTLSSClient on all freebsd platforms
This test seems like it needs attention from a TLS and/or FreeBSD
expert. In the meantime, it needs to stop causing noise on the build
dashboard.

For #19229

Change-Id: If7e9e3533ae7cb29006a670c3e9df90512dcf9f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/370137
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-08 15:34:19 +00:00
Bryan Mills
2c85fcd47d Revert "net: in (*netFD).dial, use the passed in local address if getsockname fails"
This reverts CL 366536

Reason for revert: may have caused #50033 due to an invalid or partially-populated *TCPAddr

Fixes #50033

Change-Id: Ia29ca4116503dba65d56e89caa46ba1c848d421a
Reviewed-on: https://go-review.googlesource.com/c/go/+/369982
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-08 15:31:54 +00:00
Bryan C. Mills
9fe77de3c1 debug/buildinfo: update test for CL 369977
As a side effect of the changes in cmd/go/internal/work in CL 369977,
binaries built in GOPATH mode now include rudimentary build metadata
for at least the package path and compiler in use.

That seems like a strict improvement, but the test needs to be updated
to reflect the newly-available metadata.

Change-Id: I657c785e3e9992ed594c9524409f2d076f9eb376
Reviewed-on: https://go-review.googlesource.com/c/go/+/370234
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-08 15:30:52 +00:00
Russ Cox
08025a9d6d cmd: go get golang.org/x/tools@fd2bfb7 (Dec 7 2021)
cd src/cmd
	go get golang.org/x/tools@fd2bfb7
	go mod tidy
	go mod vendor

Brings in fixes to cmd/vet for 'any' changes.

Change-Id: I70a48d451bd99f5d82f91fd079fbdd1b4bac2520
Reviewed-on: https://go-review.googlesource.com/c/go/+/370136
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2021-12-08 15:15:40 +00:00
Ian Lance Taylor
a19e72cb89 doc/go1.18: move fuzzing to tools section
For #47694

Change-Id: Idab1a5822a096447c71776ee4339c4262183ceb7
Reviewed-on: https://go-review.googlesource.com/c/go/+/370034
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Trust: Katie Hockman <katie@golang.org>
2021-12-08 04:14:00 +00:00
Hana
016e6ebb42 cmd/go: fix references to old go mod editwork
That is replaced by `go work edit`.

Change-Id: I39996c7bea0182a18edf6a1f70b6616c74099a1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/370139
Reviewed-by: Michael Matloob <matloob@golang.org>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
2021-12-08 01:23:09 +00:00
Michael Pratt
34573aeb97 Revert "build: for default bootstrap, use Go 1.17 if present, falling back to Go 1.4"
This reverts https://golang.org/cl/369914.

Reason for revert: Breaking previously working toolchain builds.

For #44505.

Change-Id: I09ae20e50109a600d036358118077d27669df39c
Reviewed-on: https://go-review.googlesource.com/c/go/+/370138
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 01:17:33 +00:00
Michael Pratt
0a15e7851a runtime/pprof: assert that labelHog samples are always labeled
With https://golang.org/issue/50007 resolved, there are no known issues
with pprof labels remaining. Thus, the 10% allowed error in
TestLabelSystemstack should not be required.

Drop it in favor of an explicit assertion that all samples containing
labelHog are properly labeled.

This is no flaky in my local testing. It is possible that other bugs
will appear at larger testing scale, in which case this CL will be
reverted, but then at least we will be aware of additional failure
modes.

For #50007.

Change-Id: I1ef530c303bd9a01af649b8b08d4b35505e8aada
Reviewed-on: https://go-review.googlesource.com/c/go/+/369744
Reviewed-by: Bryan Mills <bcmills@google.com>
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 22:33:39 +00:00
Michael Pratt
a3ae45ebe1 runtime/pprof: consume tag for first CPU record
profBuf.write uses an index in b.tags for each entry, even if that entry
has no tag (that slice entry just remains 0). profBuf.read similarly
returns a tags slice with exactly as many entries as there are records
in data.

profileBuilder.addCPUData iterates through the tags in lockstep with the
data records. Except in the special case of the first record, where it
forgets to increment tags. Thus the first read of profiling data has all
tags off-by-one.

To help avoid regressions, addCPUData is changed to assert that tags
contains exactly the correct number of tags.

For #50007.

Change-Id: I5f32f93003297be8d6e33ad472c185d924a63256
Reviewed-on: https://go-review.googlesource.com/c/go/+/369741
Reviewed-by: Austin Clements <austin@google.com>
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 22:33:33 +00:00
Dan Scales
cf1ec17360 cmd/compile: deal with unsatisfiable type assertion in some instantiations
Deal with case where a certain instantiation of a generic
function/method leads to an unsatisfiable type assertion or type case.
In that case, the compiler was causing a fatal error while trying to
create an impossible itab for the dictionary. To deal with that case,
allow ITabLsym() to create a dummy itab even when the concrete type
doesn't implement the interface. This dummy itab is analogous to the
"negative" itabs created on-the-fly by the runtime.

We will use the dummy itab in type asserts and type switches in
instantiations that use that dictionary entry. Since the dummy itab can
never be used for any real value at runtime (since the concrete type
doesn't implement the interface), there will always be a failure for the
corresponding type assertion or a non-match for the corresponding
type-switch case.

Fixes #50002

Change-Id: I1df05b1019533e1fc93dd7ab29f331a74fab9202
Reviewed-on: https://go-review.googlesource.com/c/go/+/369894
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 21:54:30 +00:00
Austin Clements
e08d1fba37 doc/go1.18: mention bytes.Cut and strings.Cut
For #47694.

Updates #46336.

Change-Id: Ibbd058a1fd4d6b0aa38d3e8dc15b560d1e149f7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/369981
Trust: Austin Clements <austin@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2021-12-07 21:32:48 +00:00
Austin Clements
dc50d69119 doc/go1.18: drop TODO for "Changes to the language"
For #47694

Change-Id: I142776001eecb451e8722163cfd3f2ecb0ecf35c
Reviewed-on: https://go-review.googlesource.com/c/go/+/369980
Trust: Austin Clements <austin@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2021-12-07 21:31:42 +00:00
Katie Hockman
daf9018105 cmd/go: fix flaky test
Change-Id: I641c7b8bcf8b9a8f0637995b26eea0fbe2900ef9
Reviewed-on: https://go-review.googlesource.com/c/go/+/369978
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 21:16:00 +00:00
Katie Hockman
2ebe081288 internal/fuzz: handle unrecoverable errors during minimization
Previously, if an unrecoverable error occurred during
minimization, then the input that caused the failure
could not be retrieved by the coordinator. This was fine
if minimizing a crash, since the coordinator could simply
report the original error, and ignore the new one.
However, if an error occurred while minimizing an
interesting input, then we may lose an important error
that would be better to report.

This changes is a pretty major refactor of the minimization
logic in order to support this. It removes minimization
support of all types except []byte and string. There isn't
compelling evidence that minimizing types like int or float64
are actually beneficial, so removing this seems fine.

With this change, the coordinator requests that the worker
minimize a single value at a time. The worker updates shared
memory directly during minimzation, writing the *unmarshaled*
bytes to the shared memory region. If a nonrecoverable error occurs
during minimization, then the coordinator can get the
unmarshaled value out of shared memory for that type being
minimized.

Fixes #48731

Change-Id: I4d1d449c411129b3c83b148e666bc70f09e95828
Reviewed-on: https://go-review.googlesource.com/c/go/+/367848
Trust: Bryan Mills <bcmills@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 21:15:51 +00:00
Russ Cox
b37a5391f9 cmd/link, cmd/go: make version info easier to extract
Reading the version information to date has required evaluating
two pointers to strings (which themselves contain pointers to data),
which means applying relocations, which can be very system-dependent.

To simplify the lookup, inline the string data into the build info blob.

This makes go version work on binaries built with external linking
on darwin/arm64.

Also test that at least the very basics work on a trivial binary,
even in short mode.

Change-Id: I463088c19e837ae0ce57e1278c7b72e74a80b2c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/369977
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-07 20:14:56 +00:00
Russ Cox
4300f10514 build: for default bootstrap, use Go 1.17 if present, falling back to Go 1.4
Preparation for #44505, but safe for Go 1.18.
Also fixes the default build on Macs, at least for
people who have a $HOME/go1.17 or have run

	go install golang.org/dl/go1.17@latest
	go1.17 download

Change-Id: I822f93e75498620fad87db2436376148c42f6bff
Reviewed-on: https://go-review.googlesource.com/c/go/+/369914
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-07 18:58:57 +00:00
Bryan C. Mills
a08bbd964d cmd/go: add missing cgo conditions in script tests
Change-Id: I7cd1643b2dd5c00be84574d17830b1d5383643fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/356610
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-12-07 18:44:37 +00:00
Jeremy Faller
085d6ff531 doc/go1.18: add docs for -count when benchmarking
CL 356669

Updates #47694

Change-Id: I49e0cdd3b34e81e9e44020a8eb1304d78249cd66
Reviewed-on: https://go-review.googlesource.com/c/go/+/368677
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-07 17:59:54 +00:00
Bryan C. Mills
e5ba7d3abf net/http: remove arbitrary timeout in TestServerHijackGetsBackgroundByte_big
This test fails with "timeout" once per couple of months.
It may be that the arbitrary timeout is too short,
or it may be that the test is detecting a real bug
(perhaps a deadlock) and reporting it without sufficient
information to debug.

Either way, the arbitrary timeout is doing only harm:
either it is too short, or it is preventing us from getting
a useful goroutine dump when the test inevitably times out.

Fixes #35498 (hopefully).

Change-Id: Ic6bbb1ef8df2c111b9888ba9903f58633e7cb95d
Reviewed-on: https://go-review.googlesource.com/c/go/+/369854
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2021-12-07 17:52:27 +00:00
Michael Anthony Knyszek
4c943abb95 runtime: fix comments on the behavior of SetGCPercent
Fixes for #49680, #49695, #45867, and #49370 all assumed that
SetGCPercent(-1) doesn't block until the GC's mark phase is done, but
it actually does. The cause of 3 of those 4 failures comes from the fact
that at the beginning of the sweep phase, the GC does try to preempt
every P once, and this may run concurrently with test code. In the
fourth case, the issue was likely that only *one* of the debug_test.go
tests was missing a call to SetGCPercent(-1). Just to be safe, leave a
TODO there for now to remove the extraneous runtime.GC calls, but leave
the calls in.

Updates #49680, #49695, #45867, and #49370.

Change-Id: Ibf4e64addfba18312526968bcf40f1f5d54eb3f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/369815
Reviewed-by: Austin Clements <austin@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 17:46:04 +00:00
Bryan C. Mills
dc65c489cc cmd/go: fix tests broken in CL 358539
CL 358539 revised the build-stamp format, and updated the git and hg
tests to match. However, the fossil and bzr tests were missed, and
were not caught on the builders due to the fact that none of the
builder images have the necessary VCS tools installed.

Updates #48802
Updates #49168

Change-Id: I6b9fd0e19b81cb539864c94ab0860f74e7be6748
Reviewed-on: https://go-review.googlesource.com/c/go/+/369743
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2021-12-07 03:44:02 +00:00
Bryan C. Mills
e07b02ff87 net: in (*netFD).dial, use the passed in local address if getsockname fails
'man getsockname' lists a number of possible failure modes, including
ENOBUFS (for resource exhaustion) and EBADF (which we could possibly
see in the event of a bug or race condition elsewhere in the program).

If getsockname fails for an explicit user-provided local address, the
user is probably not expecting LocalAddr on the returned net.Conn to
return nil. This may or may not fix #34611, but should at least help
us diagnose it more clearly.

While we're add it, also add more nil-checking logic in the test based
on the stack traces posted to
https://golang.org/issue/34611#issuecomment-975923748.

For #34611

Change-Id: Iba870b96787811e4b9959b74ef648afce9316602
Reviewed-on: https://go-review.googlesource.com/c/go/+/366536
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 02:31:12 +00:00
Cherry Mui
0eb39ca1f0 cmd/dist: enable plugin test on Linux/ARM64
The test was skipped because with the old gold linker on the
builder it fails with an internal error in gold. The builders now
have gold 2.31 and the test passes. Enable it.

Fixes #17138.

Change-Id: Ia0054030dd12f1d003c7420bf7ed8b112715baa9
Reviewed-on: https://go-review.googlesource.com/c/go/+/369814
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 00:58:10 +00:00
Michael Anthony Knyszek
6f65d470d8 runtime: clean up redundant calls to SetGCPercent in debug_test.go
SetGCPercent(-1) is called by several tests in debug_test.go (followed
by a call to runtime.GC) due to #49370. However, startDebugCallWorker
already actually has this, just without the runtime.GC call (allowing an
in-progress GC to still mess up the test).

This CL consolidates SetGCPercent into startDebugDebugCallWorker where
applicable.

Change-Id: Ifa12d6a911f1506e252d3ddf03004cf2ab3f4ee4
Reviewed-on: https://go-review.googlesource.com/c/go/+/369751
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2021-12-07 00:27:57 +00:00
Dmitri Shuralyov
79b425e9fc misc/cgo/testplugin: remove skip in TestIssue25756pie
Though this was a problem for Go 1.17,
it appears not to be a problem on tip.

This reverts change made in CL 321349.

For #46239.

Change-Id: Ie4d6649fbabce3bb2c1cf04d97760ba6ceadaca5
Reviewed-on: https://go-review.googlesource.com/c/go/+/369752
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-12-07 00:03:34 +00:00
Michael Anthony Knyszek
871d63fb73 runtime: call runtime.GC in several tests that disable GC
These tests disable GC because of the potential for a deadlock, but
don't consider that a GC could be in progress due to other tests. The
likelihood of this case was increased when the minimum heap size was
lowered during the Go 1.18 cycle. The issue was then mitigated by
CL 368137 but in theory is always a problem.

This change is intended specifically for #45867, but I just walked over
a whole bunch of other tests that don't take this precaution where it
seems like it could be relevant (some tests it's not, like the
UserForcedGC test, or testprogs where no other code has run before it).

Fixes #45867.

Change-Id: I6a1b4ae73e05cab5a0b2d2cce14126bd13be0ba5
Reviewed-on: https://go-review.googlesource.com/c/go/+/369747
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: David Chase <drchase@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-06 23:02:28 +00:00
Bryan C. Mills
8ea0ffb84a net: clarify that conn.LocalAddr and conn.RemoteAddr might not be known
For #34611

Change-Id: I9a1357f53124c98ad017b58774696d0377dbea27
Reviewed-on: https://go-review.googlesource.com/c/go/+/369160
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-06 22:36:22 +00:00
Bryan C. Mills
6180c4f5eb log/syslog: create unix sockets in unique directories
startServer was invoking os.Remove on the temporary file for a unix
socket after creating it. Since the files were created in the global
temp directory, that could cause two tests to arrive at colliding
names.

(Noticed while looking into the failure at
https://storage.googleapis.com/go-build-log/af2c83b1/solaris-amd64-oraclerel_3e01fda8.log,
but I would be surprised if this solves that failure.)

This change uses unique temporary directories, and attempts to keep
name lengths minimal to avoid accidentally running into socket-name
length limitations.

Updates #34611

Change-Id: I21743f245e5c14645e03f09795013e058b984471
Reviewed-on: https://go-review.googlesource.com/c/go/+/366774
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-06 22:35:32 +00:00
Jeremy Faller
d16a57542a doc/go1.18: add new sync.[RW]Mutex methods
CL 319769

Updates #47694

Change-Id: I9655af0d249926617645c33617d53b73f985aa19
Reviewed-on: https://go-review.googlesource.com/c/go/+/368797
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-06 21:14:21 +00:00
Jeremy Faller
870f33f6ef doc/go1.18: add changes to strconv.Unquote to release notes
CL 343877

Updates #47694

Change-Id: I37a0a0d1f7ab937b12812981ecddc89eb8c99c24
Reviewed-on: https://go-review.googlesource.com/c/go/+/368796
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
2021-12-06 21:09:34 +00:00
Jeremy Faller
1c4cf50e11 doc/go1.18: add docs for js.Wrapper's removal
CL 356430

Updates #47694

Change-Id: I802cd50f2827caa0549c25685c0b1bb8dfc40968
Reviewed-on: https://go-review.googlesource.com/c/go/+/368799
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-12-06 21:02:48 +00:00
Jeremy Faller
0bbb74b5ac doc/go1.18: add changes to regexp to release notes
CL 354569

Updates #47694

Change-Id: I78536c110215b3c9f247c1420bcaa5fc3d8fb930
Reviewed-on: https://go-review.googlesource.com/c/go/+/368795
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-06 21:01:12 +00:00
Austin Clements
9ecb853cf2 doc/go1.18: minor tweaks to generics section
This CL reorders the bullet points in the generics section to more
closely match what I think users will consider most important. I put
the ~ token before the mention of ~T in interfaces to avoid a forward
reference, though I wonder if we actually want to spent a couple more
sentences saying what union and ~T types are, since most people are
going to care about that a lot more than they care about the low-level
detail that there's a new token.

For #47694.

Change-Id: Ib84f096ef6346a711801268ce362b64fa423d3f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/369734
Trust: Austin Clements <austin@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-06 19:50:32 +00:00
miller
765cc726b6 src/cmd/go/internal/work: lock Builder output mutex consistently
To prevent interleaving of output when 'go build' compiles several
packages in parallel, the output mutex in the Builder struct must
be locked around any calls to Builder.Print which could generate
arbitrary amounts of text (ie more than is guaranteed to be written
atomically to a pipe).

Fixes #49987
For #49338

Change-Id: I7947df57667deeff3f03f231824298d823f8a943
Reviewed-on: https://go-review.googlesource.com/c/go/+/369018
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Russ Cox <rsc@golang.org>
2021-12-06 19:23:21 +00:00
Michael Anthony Knyszek
c27a3592ae runtime: set iOS addr space to 40 bits with incremental pagealloc
In iOS <14, the address space is strictly limited to 8 GiB, or 33 bits.
As a result, the page allocator also assumes all heap memory lives in
this region. This is especially necessary because the page allocator has
a PROT_NONE mapping proportional to the size of the usable address
space, so this keeps that mapping very small.

However starting with iOS 14, this restriction is relaxed, and mmap may
start returning addresses outside of the <14 range. Today this means
that in iOS 14 and later, users experience an error in the page
allocator when a heap arena is mapped outside of the old range.

This change increases the ios/arm64 heapAddrBits to 40 while
simultaneously making ios/arm64 use the 64-bit pagealloc implementation
(with reservations and incremental mapping) to accommodate both iOS
versions <14 and 14+.

Once iOS <14 is deprecated, we can remove these exceptions and treat
ios/arm64 like any other arm64 platform.

This change also makes the BaseChunkIdx expression a little bit easier
to read, while we're here.

Fixes #46860.

Change-Id: I13865f799777739109585f14f1cc49d6d57e096b
Reviewed-on: https://go-review.googlesource.com/c/go/+/344401
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-12-06 19:16:48 +00:00
Roi Martin
7a840664fe cmd/go: update "go help doc" docs
This CL updates "go help doc" docs so they reflect the following
changes:

- CL 59413 modified "go doc", so the behavior of the two-args case is
  consistent with the one-arg one.
- CL 141397 removed godoc's command-line interface in favor of "go doc".

Fixes #49830.

Change-Id: I0923634291d34ae663fe2944d69757462b814919
Reviewed-on: https://go-review.googlesource.com/c/go/+/367497
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Russ Cox <rsc@golang.org>
2021-12-06 19:10:14 +00:00
Austin Clements
2cb9042dc2 doc/go1.18: cite CLs for more efficient scavenging
For #47694.

Change-Id: Ic6088b1811600670a57f28426f4158a7c7517c82
Reviewed-on: https://go-review.googlesource.com/c/go/+/369616
Trust: Austin Clements <austin@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-12-06 17:34:53 +00:00
Robert Findley
f8a8a73096 go/types, types2: unexport NewTypeList
NewTypeList was not part of the go/types API proposal, and was left in
by accident. It also shouldn't be necessary, so remove it.

Updates #47916

Change-Id: I4db3ccf036ccfb708ecf2c176ea4921fe68089a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/369475
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-12-06 14:58:33 +00:00
zhouguangyuan
20b9aaca30 all: update vendored golang.org/x/sys
Update the vendored x/sys to pick up CL 368994, which remove the
declaration of function darwinSupportsAVX512 in cpu/cpu_gc_x86.go.

The following commands were used:

  go get -d golang.org/x/sys@97ca703d548df069cb02aacea9efc3093ffdc3c4
  go mod tidy
  go mod vendor

Fixes #49942

Change-Id: I05162a051f572bf8599be198a6033384b7d19445
Reviewed-on: https://go-review.googlesource.com/c/go/+/369454
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-06 14:32:58 +00:00
Ian Lance Taylor
ecf6b52b7f test/ken/slicearray.go: correct type width in comment
The type was changed in https://golang.org/cl/3991043 but the comment
wasn't updated.

Change-Id: I7ba3f625c732e5e801675ffc5d4a28e1d310faa3
Reviewed-on: https://go-review.googlesource.com/c/go/+/369374
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-12-05 12:50:44 +00:00
Ian Lance Taylor
3396878af4 doc/go1.18: use correct link for reflect.PointerTo
For #47694

Change-Id: Iee4fda069a56ea4436b8aa32e2605f3349d7c154
Reviewed-on: https://go-review.googlesource.com/c/go/+/369334
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
2021-12-04 17:16:07 +00:00
Jeremy Faller
1876b38263 doc/go1.18: add docs for SysProcAttr.Pdeathsig
CL 355570

Updates #47694

Change-Id: I922cda28ca4cf1ae6d5e4f457cc66d5041b0e3e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/368798
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2021-12-04 11:59:35 +00:00
Robert Griesemer
549cfefc72 doc/go1.18: expand section on generics
Also, move it up in the document.

Updates #47694

Change-Id: I927c4c845089a5c22e2c5b5f3de1831c04c6d990
Reviewed-on: https://go-review.googlesource.com/c/go/+/369102
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-12-04 04:50:55 +00:00
Robert Griesemer
cd5f2cf50f doc/go1.18: add documentation for changes to go/types
The number of involved CLs is too large (hundreds) so
no CLs are mentioned in (html) comments.

Updates #47694

Change-Id: I655d800a1e56a71e9d70a190f1c42c17baf6861e
Reviewed-on: https://go-review.googlesource.com/c/go/+/369099
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-12-04 04:41:31 +00:00