This is permitted by the XML specification.
Fixes#68387
Change-Id: Ic4ab5520a08a5a997f1c3d13c6d5f80c0521e45c
GitHub-Last-Rev: 6d2ac307bb
GitHub-Pull-Request: golang/go#69197
Reviewed-on: https://go-review.googlesource.com/c/go/+/610056
Auto-Submit: Ian Lance Taylor <iant@google.com>
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containerd deleted unsafe, golinkname usage from whole project in
the https://github.com/containerd/containerd/pull/10611. This patch is
to delete contained name in the comment.
Change-Id: Ide55ad9c65b3b622650a0b5813a7817306e87d3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/609996
Auto-Submit: Ian Lance Taylor <iant@google.com>
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On Windows, the User.GroupIds currently errors out if the user has no
groups. This is incorrect, as the user may not be a member of any groups
as demonstrated by the new TestGroupIdsTestUser test.
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Change-Id: I436aa6214f2b98ef98dfb6064caec3d682b3f3d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/606675
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We can see ENOMEM on FreeBSD.
Also don't fail the test if we get an EPERM error when reading
all the way up the tree; on Android we get that, perhaps because
the root directory is unreadable.
Also accept an EFAULT from a stat of a long name on Dragonfly,
which we see on the builders.
Change-Id: If37e6bf414b7b568c9a06130f71e79af153bfb75
Reviewed-on: https://go-review.googlesource.com/c/go/+/610415
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Change-Id: I5bc514bedeb1155e6db52e37736fd6101774aea0
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Now that we're bootstrapping from a toolchain that has the clear builtin.
Update #64751
Change-Id: Ia86d96c253c9f7c66131cd02048a493047569641
Reviewed-on: https://go-review.googlesource.com/c/go/+/610237
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Now that we're bootstrapping from a toolchain that has min/max builtins.
Update #64751
Change-Id: I63eedf3cca00f56f62ca092949cb2dc61db03361
Reviewed-on: https://go-review.googlesource.com/c/go/+/610355
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Change-Id: I2e4d74a86faa95321e847a061e06c3efff7f20df
Reviewed-on: https://go-review.googlesource.com/c/go/+/605775
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I was not sure this was correct so I exhaustively checked all possibilities:
https://go.dev/play/p/hjmCLm4Iagzhttps://go.dev/play/p/R9RuRGKwCbN
Change-Id: I85f053df825a4d77f978de42f8a1fcaf4b881def
Reviewed-on: https://go-review.googlesource.com/c/go/+/605696
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Change-Id: I419faa781db085b98ea25008ca127d0317fb34e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/605695
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I didn't implemented negative limits since prove is most useful for BCE which
should never be negative in the first place.
Change-Id: I302ee462cdc20bd4edff0618f7e49ff66fc2a007
Reviewed-on: https://go-review.googlesource.com/c/go/+/605136
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with slices there's no need to implement sort.Interface
Change-Id: I59167e78881cb1df89a71e33d738d6aeca7adb71
GitHub-Last-Rev: 507ba84453
GitHub-Pull-Request: golang/go#68724
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All changes are related to the code, except for the comments in src/regexp/syntax/parse.go and src/slices/slices.go.
Change-Id: I73c5d3c54099749b62210aa7f3182c5eb84bb6a6
GitHub-Last-Rev: 794aa9b053
GitHub-Pull-Request: golang/go#69170
Reviewed-on: https://go-review.googlesource.com/c/go/+/609678
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Change SimpleFold to search the CaseRanges table only once when no
folding is specified for the rune (previously up to two searches could
be performed). This improves performance by 2x for runes that have no
folds or are already upper case. As a side effect this improves the
performance of To by roughly ~15%
goos: darwin
goarch: arm64
pkg: unicode
cpu: Apple M1 Max
│ base.10.txt │ new.10.txt │
│ sec/op │ sec/op vs base │
ToUpper-10 11.860n ± 1% 9.731n ± 1% -17.95% (p=0.000 n=10)
ToLower-10 12.31n ± 1% 10.34n ± 1% -16.00% (p=0.000 n=10)
SimpleFold/Upper-10 19.16n ± 0% 15.98n ± 1% -16.64% (p=0.000 n=10)
SimpleFold/Lower-10 32.41n ± 1% 17.09n ± 1% -47.27% (p=0.000 n=10)
SimpleFold/Fold-10 8.884n ± 4% 8.856n ± 8% ~ (p=0.700 n=10)
SimpleFold/NoFold-10 30.87n ± 0% 15.49n ± 3% -49.84% (p=0.000 n=10)
geomean 17.09n 12.47n -26.99%
Change-Id: I6e5c7554106842955aadeef7b266c4c7944d3a97
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At least Darwin and OpenBSD seem to return EINVAL if the resulting
name would be too long. Solaris seems to return ERANGE.
Fixes#69233Fixes#69234
Change-Id: I9b51d41461e9576c633bf2fc0e96ca3e4d986255
Reviewed-on: https://go-review.googlesource.com/c/go/+/609579
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Instead of running all tests and relying on an init function, let's
embed the child code into the test case and only run one specific test.
Change-Id: Ib04e8a580556e7e30ff776c2041f0b809b440a26
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As some callers don't have a testing context, modify testenv.Executable
to accept nil (similar to how testenv.GOROOT works).
Change-Id: I39112a7869933785a26b5cb6520055b3cc42b847
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...and move a few so they won't be called when not needed.
Change-Id: I024b9552ed5ed839cde4fbae4815ec6ba8b67265
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On some platforms (android, wasip1) this function is called many
times which probably results in some slowdown, especially for wasip1.
Wrap it into sync.OnceValues.
Change-Id: Id290ffd8d1e7ad806302f457e8fff2e3123b49a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/609418
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Note that this changes some nuances of how the tests work:
- some tests had a fallback to using os.Args[0], which is removed;
- some tests skipped (rather than failed) the test upon getting an
error from os.Executable.
I think these changes are not practically relevant.
Change-Id: I0655add6d959a8b7e3359f94c38203aa06e8f490
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Tests commonly use code to get os.Executable value, and some cache the
resulting value.
To reduce code duplication, add a helper that does just that.
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Fixes#69159
Change-Id: I0bbcf7075bdcf7a277a5053bcb543563a3074784
GitHub-Last-Rev: 86052a9ce3
GitHub-Pull-Request: golang/go#69160
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addLocalFacts loop already ft.update which sets up limits correctly, but doing this in flowLimit help us since other values might depend on this limit.
Updates #68857
We could improve this further:
- remove mod alltogheter when we can prove a < b.
- we could do more adhoc computation in flowLimit to set umax and umin tighter
Change-Id: I5184913577b6a51a07cb53a6e6b73552a982de0b
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Change-Id: I6902c405cab7bd573f6a721a6ca7c783713ea39a
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This help to optimize code like this:
func f(buckets *[512]bucket, v value) {
a, b := v.computeSomething()
// assume a and b are proved < 512
b := &buckets[a ^ b] // pick a random bucket
b.store(v)
}
Change-Id: I1acf702f5a8137f9ded49081b4703922879b0288
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See the cases above all of theses are implemented (except XOR which has a blank case with comments).
Change-Id: I9e2994490dac89e86ba70c1abeb1af1cbcf032e9
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y := bits.TrailingZeros(x)
if y > bits.Len(x.umax)-1 {
then must always be true 1 << y > x.umax which is impossible
}
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Change-Id: I56c27d606b55ea882f4db264fd4735b0cccdf7c6
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Change-Id: I57a03961dc97d20224498a67687a8c8ecfbbb627
GitHub-Last-Rev: 07ca14263f
GitHub-Pull-Request: golang/go#69157
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As of CL 257637, all currently supported platforms have syscall.Getwd
implemented, so the code which deduces wd by traversing up to root
directory is never used and thus can be removed.
Or, as it was suggested by Ian Lance Taylor in CL 607436 review
comments, it can be reused when syscall.Getwd returns ENAMETOOLONG
(which usually happens than the current working dir is longer than
syscall.PathMax).
Let's do that. The only caveat is, such a long path returned from Getwd
couldn't be used for any file-related operations (they will probably
fail with ENAMETOOLONG).
While at it:
- make the stat(".") code conditional, slightly improving the
performance on Unix when $PWD is not set;
- reuse variables dir and err;
- use openDirNolog instead of openFileNolog to obtain a dirfd;
- ensure the errors returned are wrapped;
- document the new functionality;
- add test cases (which fail before this change).
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Including embedded struct inforamtion in error message.
Fixes#68941
Change-Id: I6a6f7d506104839a9a7cf1a2c3003272f5534a79
GitHub-Last-Rev: 717f680aca
GitHub-Pull-Request: golang/go#68966
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There is one special case of (0, nil) indicating EOF where the updates
of zero to remain and written are redundant.
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Change-Id: Ia6a2768be0e044112831c278d88ff31ba3caa9f9
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```
export CC="zig cc -target x86_64-linux"
hyperfine '../pkg/tool/darwin_arm64/cgo -objdir /tmp net/cgo_linux.go net/cgo_resnew.go net/cgo_socknew.go net/cgo_unix_cgo.go net/cgo_unix_cgo_res.go'
```
**Before**
```
Time (mean ± sig): 1.293 s ± 0.017 s [User: 0.472 s, System: 0.451 s]
Range (min ... max): 1.263 s ... 1.316 s 10 runs
```
**After**
```
Time (mean ±sig): 986.5 ms ± 22.6 ms [User: 487.0 ms, System: 519.5 ms]
Range (min ... max): 950.7 ms ... 1022.2 ms 10 runs
```
The version after changes is 25% faster for 5 input files (std "net" package).
I also tried to make CC artifictially slower (wrapper with sleep 0.2) and it showes same 25% performance increase.
Change-Id: I7a26fdc8d8a23b0df9bc71d30b96e82e2ddb943b
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A previous change [1] was introduced to enable MPTCP by default
for both the clients and servers, based on the discussions [2] in
golang#56539, where MPTCP would be an opt-in for a release or
two, and then would become an opt-out.
This change was not accepted at the time because the support for
a few socket options was missing [3]. Now that this support has been
added [4] and backported to stable versions not to block MPTCP
deployment with Go, it sounds like a good time to reconsider the use
of MPTCP by default.
Instead of enabling MPTCP on both ends by default, as a first step,
it seems safer to change the default behaviour only for the server
side (Listeners). On the server side, the impact is minimal: when
clients don't request to use MPTCP, server applications will create
"plain" TCP sockets within the kernel when connections are accepted,
making the performance impact minimal. This should also ease
experiments where MPTCP is enabled by default on the client side
(Dialer).
The changes in this patch consist of a duplication of the mptcpStatus
enumeration to have both a mptcpStatusDial and a mptcpStatusListen,
where MPTCP is enabled by default in mptcpStatusListen, but disabled
by default in mptcpStatusDial. It is still possible to turn MPTCP support
on and off by using GODEBUG=multipathtcp=1.
[1] https://go-review.googlesource.com/c/go/+/563575
[2] https://go.dev/issue/56539#issuecomment-1309294637
[3] https://github.com/multipath-tcp/mptcp_net-next/issues/383
[4] bd11dc4fb9
[5] https://www.mptcp.dev/faq.html#why--when-should-mptcp-be-enabled-by-default
Updates #56539
Change-Id: I1ca0d6aaf74d3bda5468af135e29cdb405d3fd00
GitHub-Last-Rev: 5f9f29bfc1
GitHub-Pull-Request: golang/go#69016
Reviewed-on: https://go-review.googlesource.com/c/go/+/607715
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Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Also replace "copy of parent" with "derived context" in doc comments.
Fixes#68923
Change-Id: I319c1594f390e35b32b4e58ee979927bb84bfdf9
Reviewed-on: https://go-review.googlesource.com/c/go/+/606555
Reviewed-by: Sameer Ajmani <sameer@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Sameer Ajmani <sameer@golang.org>
Commit-Queue: 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>
ZR is deprecated,
so replace it with the literal Rectangle to represent the zero value.
Change-Id: I68c0ffec808eaed1e8c352bf364d295c0041594e
GitHub-Last-Rev: 850472888d
GitHub-Pull-Request: golang/go#69136
Reviewed-on: https://go-review.googlesource.com/c/go/+/609516
Reviewed-by: Nigel Tao <nigeltao@golang.org>
Reviewed-by: Nigel Tao <nigeltao@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Fixes#68984
Change-Id: I16d25777cb38a337cd4204a8147eaf866c3df9e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/607695
Reviewed-by: Kirill Kolyshkin <kolyshkin@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Change-Id: Ia53d4a58810948d83a3e87e08239602da1bad815
Reviewed-on: https://go-review.googlesource.com/c/go/+/609935
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>
Since go1.22, generic can now be used when building bootstrap toolchain.
Updates #54265
Updates #64751
Change-Id: I93209fc23c92114d37ef36787ea2b520de3ed89d
Reviewed-on: https://go-review.googlesource.com/c/go/+/609915
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Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
On Linux one process can call prlimit to change the resource limit
of another process. With this change we treat that as though the
current process called prlimit (or setrlimit) to set its own limit.
The cost is one additional getrlimit system call per fork/exec,
for cases in which the rlimit Cur and Max values differ at startup.
This revealed a bug: the setrlimit (not Setrlimit) function should not
change the cached rlimit. That means that it must call prlimit1, not prlimit.
Fixes#66797
Change-Id: I46bfd06e09ab7273fe8dd9b5b744dffdf31d828b
Reviewed-on: https://go-review.googlesource.com/c/go/+/607516
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Aleksa Sarai <cyphar@cyphar.com>
Reviewed-by: Kirill Kolyshkin <kolyshkin@gmail.com>
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Document that if one of the Decode methods in these packages is given
a short buffer, it panics.
Fixes#69024
Change-Id: I1c0e4c74274965c1cfa0422cc8f86af4fefb1d00
Reviewed-on: https://go-review.googlesource.com/c/go/+/607499
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Linux added the prlimit system call in version 2.6.36.
As our minimum Linux kernel version is now 3.2,
simplify the various getrlimit/setlrimit implementations
to just always use prlimit.
For #67001
Change-Id: I2512c21c947d0bc83f8f9077c143163fd8d83be3
Reviewed-on: https://go-review.googlesource.com/c/go/+/609178
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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