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55104 Commits

Author SHA1 Message Date
Russ Cox
4e7c838483 crypto/internal/boring: add dev.boringcrypto README.md text
Add the text from dev.boringcrypto's README making clear what
this code is and that it is unsupported.

Change-Id: Ie49e8ccff10436f5d27ed422f159b4899193c9a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/460515
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
2023-01-04 19:58:48 +00:00
Robert Griesemer
46e3d9d12a cmd/compile: use "satisfies" (not "implements") for constraint errors
Per the latest spec, we distinguish between interface implementation
and constraint satisfaction. Use the verb "satisfy" when reporting
an error about failing constraint satisfaction.

This CL only changes error messages. It has no impact on correct code.

Fixes #57564.

Change-Id: I6dfb3b2093c2e04fe5566628315fb5f6bd709f17
Reviewed-on: https://go-review.googlesource.com/c/go/+/460396
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-01-04 19:07:27 +00:00
Roland Illig
79cdecc852 cmd/gofmt: fix a typo in a comment
Change-Id: I34b2b9f9b70e39c872d5edbbda4de0fe330211f5
GitHub-Last-Rev: 723e36e11e
GitHub-Pull-Request: golang/go#57566
Reviewed-on: https://go-review.googlesource.com/c/go/+/460457
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-01-04 18:15:30 +00:00
Ian Lance Taylor
9955a7e9bb README.vendor: minor updates
Change-Id: Iaacc96e6302833019ebf7a82d5a1ae49f6ff1955
Reviewed-on: https://go-review.googlesource.com/c/go/+/460175
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2023-01-03 20:31:59 +00:00
Alexander Yastrebov
d03231d9ce doc/go1.20: fix http.ResponseController example
Fixes #57162

Change-Id: I190810d702e503822265b12c56db69ec1093233c
GitHub-Last-Rev: e8b259d4b3
GitHub-Pull-Request: golang/go#57385
Reviewed-on: https://go-review.googlesource.com/c/go/+/458275
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
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Run-TryBot: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-01-03 18:53:52 +00:00
Dan Peterson
cdc73f0679 .github: suggest using private browsing in pkgsite template
I opened #54872 without considering my browser's extensions and one of
them ended up being the cause of my issue. This seems to be a common
error.

To help that, add a suggestion to use a private/incognito tab/window
to the pkgsite issue template when reproducing issues. This probably
would have been enough for me to figure things out before opening my
issue.

Updates #54872, #47213

Change-Id: Ic61a3462cb902c91554cf9432aaae1222c6a991e
Reviewed-on: https://go-review.googlesource.com/c/go/+/427962
Run-TryBot: Dan Peterson <danp@danp.net>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2023-01-03 18:52:47 +00:00
Xiao Cui
db36eca33c doc/go1.20: fix typos
Change-Id: Ie2e583cba9e9bec7d642e323e77fb2d9b05dc7bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/459780
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2022-12-29 23:36:05 +00:00
Robert Griesemer
642fd5f7ce go/types, types2: use strict comparability for type set intersection
Fixes #57486.

Change-Id: I4b71199a724718886ce6d7a49e96a9ebdcbcf737
Reviewed-on: https://go-review.googlesource.com/c/go/+/459816
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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2022-12-29 17:47:20 +00:00
Cherry Mui
9123221ccf misc/cgo/testsanitizers: run libfuzzer tests in temp directory
The libFuzzer generated binary by default writes failure input
into the current directory. Set cmd.Dir to the temporary directory
so it won't write to GOROOT when running the test.

Change-Id: I3e4ce7e3f845be5c9f09511c36e7a9a396eafad2
Reviewed-on: https://go-review.googlesource.com/c/go/+/459556
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2022-12-28 15:34:23 +00:00
Cherry Mui
e870de9936 misc/cgo/testsanitizers: add libfuzzer tests
Apparently we don't have tests for libfuzzer mode. Add some tests.

Updates #57449.

Change-Id: I813da3e71c6d6f15db31914b248db220b0b7041e
Reviewed-on: https://go-review.googlesource.com/c/go/+/459555
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Reviewed-by: Than McIntosh <thanm@google.com>
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2022-12-27 21:10:04 +00:00
Andrey Bozhko
38cfb3be9d testing: rephrase the sentence about naming test files
This updates the explanation about
naming test files to be a little more clear.

Fixes #57389

Change-Id: I9b3a8e2dae5e3ad398b55624e183809b7d90864c
GitHub-Last-Rev: 9ff81b74b2
GitHub-Pull-Request: golang/go#57399
Reviewed-on: https://go-review.googlesource.com/c/go/+/458435
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Fahad King <fahadking750@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
2022-12-23 17:16:59 +00:00
Cherry Mui
1ba7341cb2 cmd/link, runtime: use a different section for Go libfuzzer counters
Currently in libfuzzer mode, we put our counters in section
__sancov_cntrs. When linking with C/C++ code that also has fuzzer
counters, apparently the C linker combines our counters and their
counters and registers them together. But in the Go runtime we
also have code to register our counters. So the Go counters ended
up registered twice, causing problems.

Since we already have code to register our counters, put them in
a Go-specific section so it won't be combined with the C counters.

Fixes #57449.

Change-Id: If3d41735124e7e301572d4b7aecf7d057ac134c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/459055
Reviewed-by: Nicolas Hillegeer <aktau@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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2022-12-23 01:12:02 +00:00
Russ Cox
c61d322d5f runtime: call __fork instead of fork on darwin
Issues #33565 and #56784 were caused by hangs in the child process
after fork, while it ran atfork handlers that ran into slow paths that
didn't work in the child.

CL 451735 worked around those two issues by calling a couple functions
at startup to try to warm up those child paths. That mostly worked,
but it broke programs using cgo with certain macOS frameworks (#57263).

CL 459175 reverted CL 451735.

This CL introduces a different fix: bypass the atfork child handlers
entirely. For a general fork call where the child and parent are both
meant to keep executing the original program, atfork handlers can be
necessary to fix any state that would otherwise be tied to the parent
process. But Go only uses fork as preparation for exec, and it takes
care to limit what it attempts to do in the child between the fork and
exec. In particular it doesn't use any of the things that the macOS
atfork handlers are trying to fix up (malloc, xpc, others). So we can
use the low-level fork system call (__fork) instead of the
atfork-wrapped one.

The full list of functions that can be called in a child after fork in
exec_libc2.go is:

 - ptrace
 - setsid
 - setpgid
 - getpid
 - ioctl
 - chroot
 - setgroups
 - setgid
 - setuid
 - chdir
 - dup2
 - fcntl
 - close
 - execve
 - write
 - exit

I disassembled all of these while attached to a hung exec.test binary
and confirmed that nearly all of them are making direct kernel calls,
not using anything that the atfork handler needs to fix up.
The exceptions are ioctl, fcntl, and exit.

The ioctl and fcntl implementations do some extra work around the
kernel call but don't call any other functions, so they should still
be OK. (If not, we could use __ioctl and __fcntl instead, but without
a good reason, we should keep using the standard entry points.)

The exit implementation calls atexit handlers. That is almost
certainly inappropriate in a failed fork child, so this CL changes
that call to __exit on darwin. To avoid making unnecessary changes at
this point in the release cycle, this CL leaves OpenBSD calling plain
exit, even though that is probably a bug in the OpenBSD port
(filed #57446).

Fixes #33565.
Fixes #56784.
Fixes #57263.

Change-Id: I26812c26a72bdd7fcf72ec41899ba11cf6b9c4ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/459176
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
2022-12-22 18:04:06 +00:00
Russ Cox
6c9b661867 runtime: revert Apple libc atfork workaround
Revert CL 451735 (1f4394a0c9), which fixed #33565 and #56784
but also introduced #57263.

I have a different fix to apply instead. Since the first fix was
never backported, it will be easiest to backport the new fix
if the new fix is done in a separate CL from the revert.

Change-Id: I6c8ea3a46e542ee4702675bbc058e29ccd2723e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/459175
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
2022-12-22 18:03:58 +00:00
Cherry Mui
6d3139b203 misc/cgo/testshared: test build std in shared mode
Test that "go install -buildmode=shared std" works.

For #57334.

Change-Id: I465a07cf2e9035995916ef9940b4c1eeba998099
Reviewed-on: https://go-review.googlesource.com/c/go/+/459056
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tim Scharfenort <timscharfenort89@googlemail.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2022-12-22 15:23:56 +00:00
Cherry Mui
de6abd7889 runtime/internal/startlinetest: work around shared buildmode linking issue
The runtime/internal/startlinetest package contains a call to a
function defined in runtime_test. Generally this is fine as this
package is only linked in for runtime_test. Except that for "go
install -buildmode=shared std", which include all packages in std,
including this test-only internal package. In this mode, the
caller is included in the linking but the callee is not, causing
linking error. Work around it by calling
runtime_test.callerStartLine via a function pointer. The function
pointer is only set in runtime_test. In the shared std build, the
function pointer will not be set, and this is fine.

Fixes #57334.

Change-Id: I7d871c50ce6599c6ea2802cf6e14bb749deab220
Reviewed-on: https://go-review.googlesource.com/c/go/+/458696
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2022-12-22 04:34:33 +00:00
Cherry Mui
18baca6765 runtime/race: add build tag to internal amd64vN packages
Only one of the runtime/race/internal/amd64vN packages should be
included in a build. Generally this is true because the
runtime/race package would import only one of them depending on
the build configuration. But for "go install -buildmode=shared std"
it includes all Go packages in std, which includes both, which
then causes link-time failure due to duplicated symbols. To avoid
this, we add build tags to the internal packages, so, depending on
the build configuation, only one package would contain buildable
go files therefore be included in the build.

For #57334.

Change-Id: I52ddc3a40e16c7d04b4dd861e9689918d27e8509
Reviewed-on: https://go-review.googlesource.com/c/go/+/458695
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2022-12-22 04:34:09 +00:00
Tobias Klauser
13ed4f42f0 doc/go1.20: fix typo
Change-Id: Ia0ce728ca18eefd835220b2076c4aa8ba00cda6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/458815
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
2022-12-22 00:19:49 +00:00
Than McIntosh
fadd77c05b runtime/coverage: add missing file close in test support helper
The processPod() helper (invoked by processCoverTestDir, which is in
turn called by _testmain.go) was opening and reading counter data
files, but never closing them. Add a call to close the files after
they have been read.

Fixes #57407.

Change-Id: If9a489f92e4bab72c5b2df8697e14420a6f7b8f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/458835
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-12-21 20:18:10 +00:00
Roland Shoemaker
c9a10d48a8 crypto/x509: return typed verification errors on macOS
On macOS return the error code from SecTrustEvaluateWithError, and use
it to create typed errors that can be returned from Verify.

Fixes #56891

Change-Id: Ib597ce202abb60702f730e75da583894422e4c14
Reviewed-on: https://go-review.googlesource.com/c/go/+/452620
Run-TryBot: Roland Shoemaker <roland@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2022-12-21 20:05:17 +00:00
Damien Neil
2321abc5e9 archive/tar, archive/zip: revert documentation of ErrInsecurePath
CL 452616 disables path security checks by default, enabling them
only when GODEBUG=tarinsecurepath=0 or GODEBUG=zipinsecurepath=0
is set. Remove now-obsolete documenation of the path checks.

For #55356

Change-Id: I4ae57534efe9e27368d5e67773a502dd0e56eff4
Reviewed-on: https://go-review.googlesource.com/c/go/+/458875
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
2022-12-21 18:56:55 +00:00
Damien Neil
458241f981 net/http/httputil: don't add X-Forwarded-{Host,Proto} after invoking Director funcs
This reverts CL 407414.

When forwarding an inbound request that contains an existing
X-Forwarded-Host or X-Forwarded-Proto header, a proxy might want
to preserve the header from the inbound request, replace it with
its own header, or not include any header at all.

CL 407414 replaces inbound X-Forwarded-{Host,Proto} headers by default,
and allows a Director func to disable sending these headers at all.
However, the Director hook API isn't sufficiently flexible to permit the
previous behavior of preserving inbound values unchanged.

The new Rewrite API does have this flexibility; users of Rewrite can
easily pick the exact behavior they want.

Revert the change to ReverseProxy when using a Director func.
Users who want a convenient way to set X-Forwarded-* headers to
reasonable values can migrate to Rewrite at their convenience,
and users depending on the current behavior will be unaffected.

For #50465.
Fixes #57132.

Change-Id: Ic42449c1bb525d6c9920bf721efbc519697f4f20
Reviewed-on: https://go-review.googlesource.com/c/go/+/457595
Run-TryBot: Damien Neil <dneil@google.com>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
2022-12-21 18:56:32 +00:00
Michael Pratt
58f6022eee syscall: don't use faccessat2 on android
The Android seccomp policy does not allow faccessat2, so attempting to
use it results in a SIGSYS. Avoid it and go straight to the fallback.

Fixes #57393.

Change-Id: I8d4e12a6f46cea5642d3b5b5a02c682529882f29
Reviewed-on: https://go-review.googlesource.com/c/go/+/458495
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Changkun Ou <mail@changkun.de>
Run-TryBot: Michael Pratt <mpratt@google.com>
2022-12-21 17:14:34 +00:00
Mateusz Poliwczak
78fc81070a net: use correct dns msg size
Set bufSize to the actual dns message size, so that the p.Start (below) gets a fully valid dns message.

Change-Id: I585e8a3d71f88db93e09bd0dbbc0875ee6de9a97
GitHub-Last-Rev: 0967be3501
GitHub-Pull-Request: golang/go#57392
Reviewed-on: https://go-review.googlesource.com/c/go/+/458375
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2022-12-21 03:49:27 +00:00
qmuntal
a5a4744250 os: reenable TestReaddirSmallSeek on windows
TestReaddirSmallSeek should have been reenabled as part of
CL 405275, but didn't. Do it now.

Updates #36019

Change-Id: I5676eee4e63675d30e9d48ac708e72bd036b6aee
Reviewed-on: https://go-review.googlesource.com/c/go/+/458336
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Reviewed-by: David Chase <drchase@google.com>
2022-12-19 21:17:00 +00:00
Guoqi Chen
0b2ad1d815 cmd/compile: sign-extend the 2nd argument of the LoweredAtomicCas32 on loong64,mips64x,riscv64
The function LoweredAtomicCas32 is implemented using the LL-SC instruction pair
on loong64, mips64x, riscv64. However,the LL instruction on loong64, mips64x,
riscv64 is sign-extended, so it is necessary to sign-extend the 2nd parameter
"old" of the LoweredAtomicCas32, so that the instruction BNE after LL can get
the desired result.

The function prototype of LoweredAtomicCas32 in golang:
    func Cas32(ptr *uint32, old, new uint32) bool

When using an intrinsify implementation:
    case 1: (*ptr) <= 0x80000000 && old < 0x80000000
        E.g: (*ptr) = 0x7FFFFFFF, old = Rarg1= 0x7FFFFFFF

        After run the instruction "LL (Rarg0), Rtmp": Rtmp = 0x7FFFFFFF
        Rtmp ! = Rarg1(old) is false, the result we expect

    case 2: (*ptr) >= 0x80000000 && old >= 0x80000000
        E.g: (*ptr) = 0x80000000, old = Rarg1= 0x80000000

        After run the instruction "LL (Rarg0), Rtmp": Rtmp = 0xFFFFFFFF_80000000
        Rtmp ! = Rarg1(old) is true, which we do not expect

When using an non-intrinsify implementation:
    Because Rarg1 is loaded from the stack using sign-extended instructions
    ld.w, the situation described in Case 2 above does not occur

Benchmarks on linux/loong64:
name     old time/op  new time/op  delta
Cas      50.0ns ± 0%  50.1ns ± 0%   ~     (p=1.000 n=1+1)
Cas64    50.0ns ± 0%  50.1ns ± 0%   ~     (p=1.000 n=1+1)
Cas-4    56.0ns ± 0%  56.0ns ± 0%   ~     (p=1.000 n=1+1)
Cas64-4  56.0ns ± 0%  56.0ns ± 0%   ~     (p=1.000 n=1+1)

Benchmarks on Loongson 3A4000 (GOARCH=mips64le, 1.8GHz)
name     old time/op  new time/op  delta
Cas      70.4ns ± 0%  70.3ns ± 0%   ~     (p=1.000 n=1+1)
Cas64    70.7ns ± 0%  70.6ns ± 0%   ~     (p=1.000 n=1+1)
Cas-4    81.1ns ± 0%  80.8ns ± 0%   ~     (p=1.000 n=1+1)
Cas64-4  80.9ns ± 0%  80.9ns ± 0%   ~     (p=1.000 n=1+1)

Fixes #57282

Change-Id: I190a7fc648023b15fa392f7fdda5ac18c1561bac
Reviewed-on: https://go-review.googlesource.com/c/go/+/457135
Run-TryBot: Than McIntosh <thanm@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2022-12-17 01:12:22 +00:00
Than McIntosh
8bcc490667 os/user,net: add -fno-stack-protector to CFLAGS
Some compilers default to having -fstack-protector on, which breaks
when using internal linking because the linker doesn't know how to
find the support functions.

Updates #52919.
Updates #54313.
Fixes #57261.

Change-Id: Iaae731851407af4521fff2dfefc5b7e3e92cf284
Reviewed-on: https://go-review.googlesource.com/c/go/+/456855
Run-TryBot: Than McIntosh <thanm@google.com>
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2022-12-16 17:45:51 +00:00
Damien Neil
f4b42f5cb8 net/http: improve errors in TestCancelRequestWhenSharingConnection
Provide more information about why this test might be hanging waiting
for PutIdleConn to be called (#56587): If the round trip that should
result in PutIdleConn being invoked completes, report that to the
goroutine waiting for PutIdleConn.

For #56587

Change-Id: Ie476ea0ce4a48d2bda6b9b109f89d675a10e7e45
Reviewed-on: https://go-review.googlesource.com/c/go/+/457775
Auto-Submit: Damien Neil <dneil@google.com>
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2022-12-16 17:12:28 +00:00
Ian Lance Taylor
24ac659a39 syscall, internal/poll: fall back to accept on linux-arm
Our minimum Linux version is 2.6.32, and the accept4 system call was
introduced in 2.6.28, so we use accept4 everywhere. Unfortunately,
it turns out that the accept4 system call was only added to
linux-arm in 2.6.36, so for linux-arm only we need to try the accept4
system call and then fall back to accept if it doesn't work.

The code we use on linux-arm is the code we used in Go 1.17.
On non-arm platforms we continue using the simpler code introduced
in Go 1.18.

Adding accept4 to the ARM Linux kernel was:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21d93e2e29722d7832f61cc56d73fb953ee6578e

Fixes #57333

Change-Id: I6680cb54dd4d3514a6887dda8906e6708c64459d
Reviewed-on: https://go-review.googlesource.com/c/go/+/457995
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-12-16 03:40:42 +00:00
Bryan C. Mills
3323dab1f4 os/exec: retry ETXTBSY errors in TestFindExecutableVsNoexec
I made this test parallel in CL 439196, which exposed it to the
fork/exec race condition described in #22315. The ETXTBSY errors from
that race should resolve on their own, so we can simply retry the call
to get past them.

Fixes #56811.
Updates #22315.

Change-Id: I2c6aa405bf3a1769d69cf08bf661a9e7f86440b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/458016
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2022-12-16 03:04:44 +00:00
Robert Griesemer
628a1e7d3a doc/go1.20: fix typo
Change-Id: Icddf980e533b86ca955660ad028f5ad04b6aecbe
Reviewed-on: https://go-review.googlesource.com/c/go/+/457916
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2022-12-15 17:45:34 +00:00
Robert Griesemer
357ea85892 spec: fix typo
Fixes #57323.

Change-Id: I77d3d747aa4746bb9a8cca0c0500ff8fa6ae33a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/457915
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2022-12-15 16:18:42 +00:00
Robert Griesemer
ea14d1b6e1 spec: document which recursive arrays and structs are valid/invalid
Fixes #5069.

Change-Id: I4bc0f52a9cd1e64a49846dffeb4be5cbecc29a96
Reviewed-on: https://go-review.googlesource.com/c/go/+/457342
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Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-12-14 22:29:38 +00:00
Heschi Kreinick
0b8add46ce doc/go1.20.html: pre-announce dropping Windows 7, 8, and friends
For #57003, #57004.

Change-Id: Ic1386a0ce83897411fbc68c83a9125af1cc11b54
Reviewed-on: https://go-review.googlesource.com/c/go/+/457695
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Heschi Kreinick <heschi@google.com>
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2022-12-14 21:01:46 +00:00
Matthew Dempsky
4f8bc6224b cmd/compile: desugar OCALLMETH->OCALLFUNC within devirtualization
Devirtualization can turn OCALLINTER into OCALLMETH, but then we want
to actually desugar into OCALLFUNC instead for later phases. Just
needs a missing call to typecheck.FixMethodCall.

Fixes #57309.

Change-Id: I331fbd40804e1a370134ef17fa6dd501c0920ed3
Reviewed-on: https://go-review.googlesource.com/c/go/+/457715
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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2022-12-14 20:37:17 +00:00
Robert Griesemer
5c682f94c6 spec: document illegal recursive type parameter lists
Fixes #40882.

Change-Id: I90f99d75e6d66f857b6ab8789c6d436f85d20993
Reviewed-on: https://go-review.googlesource.com/c/go/+/457515
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Reviewed-by: Robert Findley <rfindley@google.com>
2022-12-14 19:13:24 +00:00
Robert Griesemer
bd42aa86d3 spec: describe new semantics for comparable and constraint satisfaction
For #56548.
Fixes #57012.

Change-Id: I44f850522e52b1811025fb31bcef289da8f8089d
Reviewed-on: https://go-review.googlesource.com/c/go/+/457437
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Reviewed-by: Robert Griesemer <gri@google.com>
2022-12-14 19:13:10 +00:00
Robert Griesemer
ffefcd360b spec: introduce notion of strict comparability
- Rephrase the notion of "comparability" from a property
  of values (operands) to a property of types and adjust
  dependent prose.
- Introduce the notion of "strict comparability".
- Fix the definitions of comparability for type interfaces
  and type parameters.
- Define the predeclared identifier "comparable" as stricly
  comparable.

These changes address existing problems in the spec as outlined
in the section on "Related spec issues" in issue #56548.

For #56548.

Change-Id: Ibc8c2f36d92857a5134eadc18358624803d3dd21
Reviewed-on: https://go-review.googlesource.com/c/go/+/457095
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
2022-12-14 19:12:15 +00:00
miller
cb07765045 syscall: fix closing of reordered FDs in plan9 ForkExec
After dup'ing file descriptors in syscall.ProcAttr.Files to pass
to the exec'ed process, the logic for closing the old descriptors
was incorrect and could close the new descriptor instead.

Fixes #57180

Change-Id: I7725f21a465ffba57050fe4e36f3d36ba181cfb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/457115
Run-TryBot: David du Colombier <0intro@gmail.com>
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Reviewed-by: Bryan Mills <bcmills@google.com>
2022-12-13 17:52:02 +00:00
Robert Griesemer
5ba98b9756 go/types, types2: report type mismatch error when conversion is impossible
Rather than reporting an impossible conversion error when mixing an
untyped value with a pointer type in an operation, report a type
mismatch error. This fixes a regression in error quality compared
to pre-1.18.

For the fix, clean up the implementation of canMix, add documentation,
and give it a better name.

Adjust test case for corresponding error code bacause we now get a
better error message (and error code) for the old error code example.

Fixes #57160.

Change-Id: Ib96ce7cbc44db6905fa2f1c90a3769af609e101b
Reviewed-on: https://go-review.googlesource.com/c/go/+/457055
Reviewed-by: Robert Findley <rfindley@google.com>
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2022-12-13 16:52:44 +00:00
Oleg Zaytsev
61e2b8ec59 cmd/gc: test temp string comparison with all ops
The comment on `slicebytetostringtmp` mention that `==` operator does
not allocate []byte to string conversion, but the test was testing only
`==` and `!=` and the compiler actually optimizes all comparison
operators.

Also added a test for concatenation comparison, which also should not
allocate.

Change-Id: I6f4c5c4f238808138fa901732e1fd5b6ab25f725
Reviewed-on: https://go-review.googlesource.com/c/go/+/456415
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2022-12-13 14:05:23 +00:00
Paul E. Murphy
b16e94d13d syscall: skip TestUseCgroupFD if cgroupfs mounted RO
The skipping logic should also trigger if /sys/fs/cgroup is
mounted read-only too. This is how it is mounted on the
ppc64le/p10 containers today.

Fixes #57262

Change-Id: Idc0ab050052ebf5777ac09f9519215b437b0ee7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/456835
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-12-12 23:10:52 +00:00
Bryan C. Mills
27301e8247 syscall: fix shadowing bugs in forkAndExecInChild
Fixes #57208.
Updates #23152.

Change-Id: Icc9a74aeb26f1b6f151162c5d6bf1b4d7cd54d0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/456515
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Reviewed-by: Russ Cox <rsc@golang.org>
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2022-12-12 14:38:22 +00:00
Changkun Ou
6f7a95d25e sync: remove unused const
Change-Id: I4382b5317cf7f39a48005516ff6d437883c6fd07
Reviewed-on: https://go-review.googlesource.com/c/go/+/456495
Reviewed-by: Dominik Honnef <dominik@honnef.co>
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2022-12-12 14:30:12 +00:00
Alexander Frolov
6b895d9eaa doc/go1.20: fix typo
Change-Id: Id0319a9cc9acc549022fdcd6b7d71c7343afd245
GitHub-Last-Rev: 2b84d25763
GitHub-Pull-Request: golang/go#57187
Reviewed-on: https://go-review.googlesource.com/c/go/+/456395
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2022-12-12 14:20:13 +00:00
Nikola Jokic
c6ad9dc9b5 debug/buildinfo: check pointer size on buildinfo.Read
Previous implementation has a check on pointer size but only if ptrSize
is 4. but it does not check on ptrSize 8 causing the panic on read for
some inputs.

The explicit check for pointer size 8 is added and error is returned if
ptrSize is not 4 and not 8.

Fixes #57002

Change-Id: Id51de72bdef4da9955d086bfc2a5d735678ee2ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/454616
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2022-12-12 14:16:49 +00:00
Shengyu Zhang
5dca7ed66f doc/go1.20: fix URL anchor
The URL anchor was invalid. Add the missing "array_or_" part.

Change-Id: Ib27f4d0f21b0148bea8b63ef962ba0ea30166ed3
GitHub-Last-Rev: f8addc6078
GitHub-Pull-Request: golang/go#57154
Reviewed-on: https://go-review.googlesource.com/c/go/+/456175
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
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2022-12-12 14:15:22 +00:00
Keith Randall
888047c310 cmd/compile: fix conditional move rule on PPC64
Similar to CL 456556 but for ppc64 instead of arm64.

Change docs about how booleans are stored in registers for ppc64.
We now don't promise to keep the upper bits zeroed; they might be junk.

To test, I changed the boolean generation instructions (MOVBZload* and ISEL*
with boolean type) to OR in 0x100 to the result. all.bash still passed,
so I think nothing else is depending on the upper bits of booleans.

Update #57184

Change-Id: Ie66f8934a0dafa34d0a8c2a37324868d959a852c
Reviewed-on: https://go-review.googlesource.com/c/go/+/456437
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2022-12-11 16:34:38 +00:00
Ian Lance Taylor
9b8750f53e os: skip size test in TestLstat if the file is a symlink
Tested by temporarily changing sysdir to use a directory where
the expected files were all symlinks. We should consider using
a different approach that doesn't rely on sysdir, but for now
do a minimal fix.

Fixes #57210

Change-Id: Ifb1becef03e014ceb48290ce13527b3e103c0e07
Reviewed-on: https://go-review.googlesource.com/c/go/+/456557
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2022-12-10 00:35:24 +00:00
Keith Randall
e8f78cb60c cmd/compile: fix conditional select rule
ARM64 maintains booleans in the low byte of registers. Upper parts
of that register are junk.
This rule is using all 32 bits of a boolean-containing register, which
is wrong. Change the rule to only look at the low bit.

Fixes #57184

Change-Id: Ibbef86b2be859df3d06d993db00e1231c481c428
Reviewed-on: https://go-review.googlesource.com/c/go/+/456556
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2022-12-09 21:38:33 +00:00