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55239 Commits

Author SHA1 Message Date
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
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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>
TryBot-Result: Gopher Robot <gobot@golang.org>
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>
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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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Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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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Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Wayne Zuo <wdvxdr@golangcn.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
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>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
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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
Reviewed-by: Robert Griesemer <gri@google.com>
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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
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Rob Pike <r@golang.org>
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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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>
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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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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
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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
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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
Run-TryBot: Ian Lance Taylor <iant@google.com>
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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
Auto-Submit: Bryan Mills <bcmills@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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>
Reviewed-by: Dmitri Shuralyov <dmitshur@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
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: KAMPANAT THUMWONG (KONG PC) <1992kongpc.kth@gmail.com>
Run-TryBot: Archana Ravindar <aravind5@in.ibm.com>
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
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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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
Auto-Submit: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
2022-12-09 21:38:33 +00:00
Than McIntosh
e76c87b191 doc: fix typo in 1.20 release notes
Fix typo.

Change-Id: Id3a78ac5d8ea429ba1685889cd1661aaca8572c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/456238
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-12-09 10:49:03 +00:00
Bryan C. Mills
80f7484af7 os/user: zero-initialize C structs returned to Go
In the wrappers for getgrnam_r and similar, the structs to be returned
are allocated on the C stack and may be uninitialized. If the call to
the wrapped C function returns an error (such as ERANGE), it may leave
the struct uninitialized, expecting that the caller will not read it.

However, when that struct is returned to Go, it may be read by the Go
garbage collector. If the uninitialized struct fields happen to
contain wild pointers, the Go garbage collector will throw an error.
(Prior to CL 449335, the Go runtime would not scan the struct fields
because they did not reside in Go memory.)

Fix this by always zeroing the struct before the C call.

Fixes #57170.

Change-Id: I241ae8e4added6f9a406dac37a7f6452341aa0cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/456121
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-12-09 04:05:17 +00:00
Robert Findley
e738a2f19b go/types, types2: always rename type parameters during inference
Type inference uses a trick of "renaming" type parameters in the type
parameter list to avoid cycles during unification. This separates the
identity of type parameters from type arguments. When this trick was
introduced in CL 385494, we restricted its application to scenarios
where inference is truly self-recursive: the type parameter list being
inferred was the same as the type parameter list of the outer function
declaration. Unfortunately, the heuristic used to determine
self-recursiveness was flawed: type-checking function literals clobbers
the type-checker environment, losing information about the outer
signature.

We could fix this by introducing yet more state into the type-checker
(e.g. a 'declSig' field that would hold the signature of the active
function declaration), but it is simpler to just avoid this optimization
and always perform type parameter renaming. We can always optimize
later.

This CL removes the check for true self-recursion, always performing the
renaming.

Fixes golang/go#57155

Change-Id: I34c7617005c1f0ccfe2192da0e5ed104be6b92c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/456236
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-12-08 23:06:18 +00:00
Zhizhen He
8247b9f17a doc: fix typo
Change-Id: Ie639fe39b83336c0d885cdcb2fddc06f2b06c2dd
GitHub-Last-Rev: b5cc78ad42
GitHub-Pull-Request: golang/go#57082
Reviewed-on: https://go-review.googlesource.com/c/go/+/455196
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-12-08 19:06:14 +00:00
Dmitri Shuralyov
f368abb46e doc/go1.20: correct test binary -v flag value for test2json
The -v flag value is "test2json", not "json", since it emits output
in a custom format that the cmd/test2json tool interprets.
The cmd/test2json documentation and implementation have this right.

For #54202.

Change-Id: I2b52861d926e14488aa9fc89fff8c26da32ca710
Reviewed-on: https://go-review.googlesource.com/c/go/+/456124
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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2022-12-08 18:29:35 +00:00
Than McIntosh
7973b0e508 cmd/{go,cover,covdata}: fix 'package main' inconsistent handling
Fix a buglet in cmd/cover in how we handle package name/path for the
"go build -o foo.exe *.go" and "go run *.go" cases.

The go command assigns a dummy import path of "command-line-arguments"
to the main package built in these cases; rather than expose this
dummy to the user in coverage reports, the cover tool had a special
case hack intended to rewrite such package paths to "main". The hack
was too general, however, and was rewriting the import path of all
packages with (p.name == "main") to an import path of "main". The hack
also produced unexpected results for cases such as

  go test -cover foo.go foo_test.go

This patch removes the hack entirely, leaving the package path for
such cases as "command-line-arguments".

Fixes #57169.

Change-Id: Ib6071db5e3485da3b8c26e16ef57f6fa1712402c
Reviewed-on: https://go-review.googlesource.com/c/go/+/456237
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2022-12-08 18:29:31 +00:00
cia-rana
0aad4d3257 cmd/link: fix dynamic interpreter path for musl-based linux amd64
Change-Id: Ia07e237647b419b73d6faa11baa32e6176c8b7ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/456215
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2022-12-08 15:23:23 +00:00
Bryan C. Mills
eaf0e3d465 runtime: remove arbitrary timeouts in finalizer tests
These short timeouts can overrun due to system scheduling delay
(or GC latency) on a slow or heavily-loaded host.

Moreover, if the test deadlocks we will probably want to know what the
GC goroutines were doing at the time. With an arbitrary timeout, we
never get that information; however, if we allow the test to time out
completely we will get a goroutine dump (and, if GOTRACEBACK is
configured in the environment, that may even include GC goroutines).

Fixes #57166.

Change-Id: I136501883373c3ce4e250dc8340c60876b375f44
Reviewed-on: https://go-review.googlesource.com/c/go/+/456118
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2022-12-08 14:19:25 +00:00
Bryan C. Mills
c8313d4fa8 cmd/go: deflake TestScript/test2json_interrupt
- Start handling signals in 'go test' just before starting the test
  subprocess instead of just after. (It is unlikely that starting the
  process will cause cmd/go to hang in a way that requires signals to
  debug, and it is possible that something the test does — such as
  sending os.Interrupt to its parent processes — will immediately
  send a signal that needs to be handled.)

- In the test-test, don't try to re-parse the parent PIDs after
  sending signals, and sleep for a much shorter time interval.
  (Overrunning the sleep caused the next call to strconv.Atoi — which
  shouldn't even happen! — to fail with a parse error, leading to the
  failure mode observed in
  https://build.golang.org/log/f0982dcfc6a362f9c737eec3e7072dcc7ef29e32.)

Fixes #56083.
Updates #53563.

Change-Id: I346a95bdda5619632659ea854f98a9e17a6aede7
Reviewed-on: https://go-review.googlesource.com/c/go/+/456115
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2022-12-08 03:52:44 +00:00
Ian Lance Taylor
b9747e0e6b os/user: on AIX getpwuid_r seems to return -1 on overflow
The getpwuid_r function is expected to return ERANGE on overflow.
Accept -1 on AIX as we see that in practice.

This problem was uncovered by, but not caused by, CL 455815,
which introduced a test that forced a buffer overflow.

Change-Id: I3ae94faf1257d2c73299b1478e49769bb807fc4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/456075
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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2022-12-08 03:49:48 +00:00
David du Colombier
9431237d77 internal/safefilepath: fix TestFromFS on Plan 9
CL 455716 added TestFromFS. This test was failing on Plan 9
because fromFS didn't return an empty string in case of error.

This change fixes TestFromFS by returning an empty string
in case of error.

Fixes #57142.

Change-Id: Ie50dfba5e70154d641f762fa43f1c26c3d12b6f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/455835
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: David du Colombier <0intro@gmail.com>
2022-12-07 23:52:46 +00:00
Bryan C. Mills
7c7cd56870 cmd/go: in TestTerminalPassthrough, delay subprocess exit until the PTY has been read
Empirically, unread PTY output may be discarded on macOS when the
child process exits.

Fixes #57141.

Tested with 'go test cmd/go -run=TestTerminalPassthrough -count=1000'
on a darwin-amd64-12_0 gomote.

Change-Id: I11508e6429c61488f30e10d9ae0cc94fdf059257
Reviewed-on: https://go-review.googlesource.com/c/go/+/455915
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2022-12-07 18:18:50 +00:00
Michael Pratt
e57e673e7f api: promote next to go1.20
Change-Id: I180f262837b164095f9ac9459d900ec1ac0585a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/455697
Reviewed-by: Jenny Rakoczy <jenny@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
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2022-12-07 16:56:12 +00:00
Michael Pratt
3ec5085eac doc/go1.20: delete remaining TODO
This section is complete.

For #54202.

Change-Id: I304cc55a5b8ed53e8b8dff73a5feb5ef39207846
Reviewed-on: https://go-review.googlesource.com/c/go/+/455895
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
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2022-12-07 16:49:08 +00:00
Than McIntosh
f715d28cea doc/go1.20: add section on coverage
Add some basic material on the changes to code coverage testing
to the release notes.

For #54202.

Change-Id: I28200d43b4952ce8e8ecf46c8fe8e97c81d245e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/453857
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2022-12-07 16:26:42 +00:00