We aren't planning to use this or advertise it much yet,
but having support for it now will make it easier to start
using in the future - older go commands will understand
what 'go 1.20' means and that they don't have go 1.20.

Fixes #23969.

Change-Id: I729130b2690d3c0b794b49201526b53de5093c45
Reviewed-on: https://go-review.googlesource.com/125940
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

Saves ~105KB of heap for callers who don't use html.UnescapeString.
(EscapeString is much more common).

Also saves 70KB of binary size, because now the linker can do dead
code elimination. (because #2559 is still open and global maps always
generate init code)

Fixes #26727
Updates #6853

Change-Id: I18fe9a273097e2c7e0cb7f88205cae1bb60fa89b
Reviewed-on: https://go-review.googlesource.com/127075
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Fixes #26611

Change-Id: I111152c7b1156a461c9ddeaf16d2fe7a2d5a00c1
GitHub-Last-Rev: 72090d539b5601b8c585628a11a99b03103d5a75
GitHub-Pull-Request: golang/go#26724
Reviewed-on: https://go-review.googlesource.com/126935Reviewed-by: Ian Lance Taylor <iant@golang.org>

Due to a new specification of //line: directives, missing
column info is now treated as column 0, aka "unknown column"
(see https://github.com/golang/go/issues/24183 for details).

As cgo does not add column number to generated //line: directive,
resulting files parsed do not have column info.

Fix by adding column of 1 to generated line directives.

Fixes #26692

Change-Id: Ie9263c0cf666b92d19c34240e745e8f32ffe7174
Reviewed-on: https://go-review.googlesource.com/126675
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Ensure that we call FinishType on all the types added to the ptrs map.
We only add a key to ptrKeys once. Once we FinishType for that key,
we'll never look at that key again. But we can add a new type under that
key later, and we'll never finish it.

Make sure we add the key to the ptrKeys list every time we make the list
of types for that key non-empty.

This makes sure we FinishType each pointer type exactly once.

Fixes #26517

Change-Id: Iad86150d516fcfac167591daf5a26c38bec7d143
Reviewed-on: https://go-review.googlesource.com/126275Reviewed-by: Ian Lance Taylor <iant@golang.org>

Some of the arguments — particularly format strings passed to git commands — may
contain spaces, and it's useful to be able to paste commands from 'go get -x
foo' directly into a shell to reproduce their output.

Change-Id: I4f0c0b4e05db8b5232458e9a271f2ccbb665e85a
Reviewed-on: https://go-review.googlesource.com/126955
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: Idbc507ae3df791a759b967bcbe833b8e08bd9611
Reviewed-on: https://go-review.googlesource.com/125817Reviewed-by: Andrew Bonventre <andybons@golang.org>

Also updates the bundled http2 to x/net/http2 git rev 49c15d80 for:

   http2: revert CL 107295 (don't sniff Content-type in Server when nosniff)
   https://golang.org/cl/126895

Fixes #24795

Change-Id: I6ae1a21c919947089274e816eb628d20490f83ce
Reviewed-on: https://go-review.googlesource.com/126896Reviewed-by: Damien Neil <dneil@google.com>

This commit removes O_NONBLOCK on js/wasm. O_SYNC can't be
removed, because it is referenced by the os package, so instead
its use returns an error.

On Windows, the options O_NONBLOCK and O_SYNC are not available
when opening a file with Node.js. This caused the initialization
of the syscall package to panic.

The simplest solution is to not support these two options on js/wasm
at all. Code written for js/wasm is supposed to be portable,
so platform-specific options should not be used.

Fixes #26524.

Change-Id: I366aa3cdcfa59dfa9dc513368259f363ca090f00
Reviewed-on: https://go-review.googlesource.com/126600Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Updates #25443

Change-Id: I5e2f84f3cee6582807b2756ffac91e8583a2baec
Reviewed-on: https://go-review.googlesource.com/126737Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This commit moves the documentation about how Go values are mapped to
JavaScript values to the functions that apply the mapping, instead of
mentioning them in the documentation of the types being mapped. This
should be easier to read.

Change-Id: I2465eb4a45f71b3b61624349e908a195010a09f1
Reviewed-on: https://go-review.googlesource.com/126856Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The example code was treating a method starting with Test
as a test function when considering whether to produce
a whole-file example or not. As a method can never be
a test function, this isn't correct.

Change-Id: Idd8ec9eaf0904af076e941d7fe7d967f6b7eef78
Reviewed-on: https://go-review.googlesource.com/125257Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: I4d01be5330db06877065aabe7a3faf69bce0dfb2
Reviewed-on: https://go-review.googlesource.com/126515Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This struct, global var and method are not used anywhere.

Change-Id: I83d9e93041a46904064d0fa88ab655a50149c747
Reviewed-on: https://go-review.googlesource.com/126397
Run-TryBot: Yury Smolsky <yury@smolsky.by>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The FAQ already has a link to the release notes and the go command docs.
Add a link from the release notes to the go command docs, to ensure that
people ultimately end up there (the docs that then signpost
people to the relevant other help docs).

Updates #25517.

Change-Id: I284c84af712d4519c59f7ca6c396b05a4c967cee
Reviewed-on: https://go-review.googlesource.com/126777Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates #22821

Change-Id: I2d0d483538174a90f56c26d99bea89fe9ce4d144
Reviewed-on: https://go-review.googlesource.com/125855
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>

Expand mod_internal tests to cover vendoring, replacements, and failure
messages.

Packages beginning with "golang_org/" resolve to $GOROOT/src/vendor, and should
therefore not be visible within module code.

Fixes #23970.

Change-Id: I706e9c4a1d1e025883e84b897972678d0fa3f2bd
Reviewed-on: https://go-review.googlesource.com/125836
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

If a single module is imported via two different paths (e.g., as itself and as a
replacement for something else), some users may be surprised if the two paths
do not share the same package-level state. Others may be surprised if the two
paths do share state.

Punt on the question for now by rejecting that condition explicitly.

Fixes #26607.

Change-Id: I15c3889f61f8dd4ba5e5c48ca33ad63aeecac04e
Reviewed-on: https://go-review.googlesource.com/126156
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

doImport is itself a thin wrapper around Import, and doPkg is its only call
site. I'm having trouble following what doPkg is doing due to the indirection,
so I'm removing it.

Change-Id: I6167be68e869a36010a56a5869df50b1145ac813
Reviewed-on: https://go-review.googlesource.com/125837
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Updates #23970.

Change-Id: I2e69ad15b9d1097bfeef9947f03cfa6834a6a049
Reviewed-on: https://go-review.googlesource.com/125676
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

We can add unversioned paths via -replace;
-dropreplace must be able to drop them.

Fixes #26417.

Change-Id: Ic05e9ae2ad80c008e11b195695cbb9d0fc8dbc0a
Reviewed-on: https://go-review.googlesource.com/126155
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Previously go list -test <pkg> would return pkg and, if it exists,
pkg.test, the test main package. This change will also list the
two test code packages (if they exist) that contain testing functions,
<pkg> [<pkg>.test] and <pkg>_test [<pkg>.test].

These packages which contain testing code are usually the packages
go list users desire to know about, so they should be surfaced
in go list -test.

See the discussion at
golang.org/cl/123635#message-5befbc66663063fb7247645a02ab1327a681e362
for more context.

Change-Id: I7170b539d02b548c050ac54048735ed785f47389
Reviewed-on: https://go-review.googlesource.com/126475
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

"LDP (R0), (F0, F1)" and "STP (F1, F2), (R0)" are
silently accepted by the arm64 assembler without
any error message. And this CL fixes that bug.

fixes #26556.

Change-Id: Ib6fae81956deb39a4ffd95e9409acc8dad3ab2d2
Reviewed-on: https://go-review.googlesource.com/125637
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

Change-Id: Iad01c9a4a080cf0c317768c34b3fbfd3c9707969
Reviewed-on: https://go-review.googlesource.com/126609Reviewed-by: Andrew Bonventre <andybons@golang.org>

Change-Id: Ie613a707dad1ac69627e1d7584d7d4e311db22f7
Reviewed-on: https://go-review.googlesource.com/126622Reviewed-by: Andrew Bonventre <andybons@golang.org>

The message was hardcoded to indicate that the test wanted a nil error, even
though in some cases a specific error was wanted. This patch fixes the
message to print the wanted error.

Change-Id: Id86ea89d6f41f25bfa164acc50142ae8ff0ec410
GitHub-Last-Rev: c220374845667942c608c02afadff95443e2ec20
GitHub-Pull-Request: golang/go#26674
Reviewed-on: https://go-review.googlesource.com/126619Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

CL 125296 added TestScript/mod_gobuild_import. This
test is failing on Plan 9, because go/build invokes
the go tool which cannot be found in the path.

The "PATH" environment variable has been updated to
contain the path to the go tool on Unix and Windows,
but on Plan 9, the analogous environment variable is
called "path".

This change fixes the script engine by setting
the "path" environment variable on Plan 9.

Fixes #26669.

Change-Id: If1be50e14baceccee591f4f76b7e698f5e12a2d4
Reviewed-on: https://go-review.googlesource.com/126608
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The test TestACL failed when ran on a Windows set
up in another language as the "Guest" account
name is translated. The SID of the group of Guests
always exist and is used instead.

Fixes #26658

Change-Id: Ia885d08a9e50563787e389c2d2dc2547881a2943
Reviewed-on: https://go-review.googlesource.com/126598Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

This will help with forward compatibility when we add additional
directives that only matter for the main module (or that can be
safely ignored otherwise).

Change-Id: Ida1e186fb2669b128aeb5a9a1187e2535b72b763
Reviewed-on: https://go-review.googlesource.com/125936Reviewed-by: Bryan C. Mills <bcmills@google.com>

We're starting to see tutorials that assume
'go mod' is the only module-related command.

Fixes #26597.

Change-Id: I44701f29f89fc67086f96307afbdb4659bb63873
Reviewed-on: https://go-review.googlesource.com/125935Reviewed-by: Bryan C. Mills <bcmills@google.com>

Fixes #26553.

Change-Id: I522a0fa96ae161b67d89f38dafde528adcbae243
Reviewed-on: https://go-review.googlesource.com/125658Reviewed-by: Bryan C. Mills <bcmills@google.com>

The mod -graph output was showing every dependency
as an edge from the main module, instead of showing only
the things that are listed in go.mod.

Fixes #26489.

Change-Id: I248fedb1fc9225e2a7a9ddc2f4a84520b3a96138
Reviewed-on: https://go-review.googlesource.com/125657Reviewed-by: Bryan C. Mills <bcmills@google.com>

"go env GOMOD" gives this for the main module already
but it's useful to be able to query other modules.
Using {{.Dir}} does not work if the go.mod was auto-synthesized.

Change-Id: If4844571e9e429b541de0d40c36ff4c5743b2031
Reviewed-on: https://go-review.googlesource.com/125656Reviewed-by: Bryan C. Mills <bcmills@google.com>

Fixes #26500.

Change-Id: I0a00009ce10f7aab3e6e79f7218307c3008422d1
Reviewed-on: https://go-review.googlesource.com/125655Reviewed-by: Bryan C. Mills <bcmills@google.com>

Suggested in discussion on #26366.

Change-Id: Id9ad2e429a915f88b4c4b30fc415c722eebe0ea4
Reviewed-on: https://go-review.googlesource.com/125297Reviewed-by: Ian Lance Taylor <iant@golang.org>

The introduction of modules has broken (intentionally) the rule
that the source code for a package x/y/z is in GOPATH/src/x/y/z
(or GOROOT/src/x/y/z). This breaks the code in go/build.Import,
which uses that rule to find the directory for a package.

In the long term, the fix is to move programs that load packages
off of go/build and onto golang.org/x/tools/go/packages, which
we hope will eventually become go/packages. That code invokes
the go command to learn what it needs to know about where
packages are.

In the short term, though, there are lots of programs that use go/build
and will not be able to find code in module dependencies.
To help those programs, go/build now runs the go command to
ask where a package's source code can be found, if it sees that
modules are in use. (If modules are not in use, it falls back to the
usual lookup code and does not invoke the go command, so that
existing uses are unaffected and not slowed down.)

Helps #24661.
Fixes #26504.

Change-Id: I0dac68854cf5011005c3b2272810245d81b7cc5a
Reviewed-on: https://go-review.googlesource.com/125296Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

The net/http module added support for HTTPS proxies in CL 68550, but the
Transport.Proxy docstring was never updated to reflect this. This (doc-only)
update adds "https" to the list of supported schemes.

Change-Id: I0570fcdae8232bb42d52c4dd739dd09ee8dfd612
Reviewed-on: https://go-review.googlesource.com/126495Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The Linux kernel faccessat system call does not take a flags parameter.
The flag parameter to the C library faccessat function is implemented in C.
The syscall.Faccessat function takes a flags parameter. In older releases
we have passed the flags parameter to the kernel, which ignored it.
In CL 120015 we started returning an error if any flags were set.
That seems clearly better than ignoring them, but it turns out that some
code was using the flags. The code was previously subtly broken.
Now it is obviously broken. That is better, but we can do better still:
we can implement the flags as the C library does. That is what this CL does.

Change-Id: I259bd6f240c3951e939b81c3032dead3d9c567b4
Reviewed-on: https://go-review.googlesource.com/126415
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

We've expanded this several times. Try more.

Fixes #18837

Change-Id: I03b699391351a30ee60a15d7aa712c6c66444cf9
Reviewed-on: https://go-review.googlesource.com/125875Reviewed-by: Ian Lance Taylor <iant@golang.org>

The test RuntimeTypeAttr always failed when gcc
was unavailable. The test is duplicated for internal
and external linking. The usual verification
of host linker is added at the beginning of the
external link test.

Fixes #26621

Change-Id: I076d661f854c8a6de8fa5e7b069942a471445047
Reviewed-on: https://go-review.googlesource.com/126075
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>