The default WASM RoundTripper is implemented using
the browser Fetch API. Some options don't readily map to
existing http.Request options, so we use the precedent
set by the TrailerPrefix constant to allow a user to configure
the "mode" and "credentials" options by supplying them
as headers in the http.Request.

Updates #26769

Change-Id: If42d24418c4ffb17211f57e36708cf460fb4c579
GitHub-Last-Rev: b230502084d628938cd50818d3d336f9f911d48d
GitHub-Pull-Request: golang/go#26784
Reviewed-on: https://go-review.googlesource.com/127718Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Fixes #26101

Change-Id: Id4def032b846257d2de992b7561ac90a17e08b91
Reviewed-on: https://go-review.googlesource.com/129155Reviewed-by: Andrew Bonventre <andybons@golang.org>

Fixes #26876

Change-Id: Ibef4e305bead1432c6a02bc2507f8000c2f4b892
Reviewed-on: https://go-review.googlesource.com/129064Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates #12042

Change-Id: Ia8d2214caad50560c4d46d723f8b94c954059b98
Reviewed-on: https://go-review.googlesource.com/128877Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

GOROOT/src/cmd uses GOROOT/src/cmd/vendor, which module
mode simply cannot handle.

Exposed by making ... match the standard library, which it still should.

But for now it's fine to just exclude commands.

Change-Id: I2201b94445f11239022de8a2473aa3b573f405c0
Reviewed-on: https://go-review.googlesource.com/129055
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Tools using go list -compiled expect to see an Imports list
that includes all the imports in CompiledGoFiles.
Make sure the list includes the cgo-generated imports.

Fixes #26136.

Change-Id: I6cfe14063f8edfe65a7af37522c7551272115b82
Reviewed-on: https://go-review.googlesource.com/128935
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

The non-module ... pattern always has.

Fixes #26905.

Change-Id: I7b298747fb33b82c58d3e6a6bc6687b6e825e52c
Reviewed-on: https://go-review.googlesource.com/128997
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

We used to try a git fetch --depth=1 of a specific hash and
distinguish between an error meaning
"that's not a hash I can give you directly"
(in which case we fall through and pull the whole repo)
and some other error like connection failure, bad ssh key
(in which case we give up).

We've had repeated problems trying to understand the
error meanings so just stop doing that, and fall back to
trying a full fetch on any error at all. If the error really
was some kind of network or auth or i/o problem, then
it will happen the second time and we can report it then.

Fixes #26894.

Change-Id: If1eaaddb87e8bfeff7a3894cce4ecef39802198c
Reviewed-on: https://go-review.googlesource.com/128904
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

CL 77110 arranged for caching and redisplaying compiler output
when reusing a compile artifact from the build cache.

It neglected to redisplay compiler and linker output when avoiding
the compile and link steps by reusing the target output binary
as a cached result. It also neglected to redisplay compiler and linker
output when avoiding the compile and link (and test) steps by reusing
cached test output.

This CL brings back the compiler and linker output in those two cases,
provided it can be found in the build cache. If it can't be found in the
build cache, then the go command still reuses the binaries and avoids
the compile/link/test steps. (It's not worth doing all that work again
just to repeat diagnostic output.)

Fixes #23877.

Change-Id: I25bc054d93a88c039bcb8c5683fe4ac5cb1ee544
Reviewed-on: https://go-review.googlesource.com/128903
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

After running mkalldocs.sh this also adds some previously missing parts
to alldocs.go

Change-Id: Ifa624c54543fd31d699a0d4bb5df7b1969bf941c
Reviewed-on: https://go-review.googlesource.com/128915
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

When we added v2.0.0+incompatible we generalized the API
enough to make it easy to also accepting these gopkg-specific
v2-unstable suffixes. Do that.

Fixes #23989.

Change-Id: Ieabed11a5250c2999d73450c10b20f4c645ad445
Reviewed-on: https://go-review.googlesource.com/128901Reviewed-by: Bryan C. Mills <bcmills@google.com>

For a package in the module root, using the containing directory name
might mean the directory in the module cache, in which case the
executable has a final @v1.2.3 in it, which is no good. Fix that.

While we're here, change go install example.com/cmd/foo/v2 to
install foo instead of the less useful "v2".

Fixes #24667.
Fixes #26869.

Change-Id: Ie40ca1bc9e27955441f1cdb7abd3a1f69034c9f5
Reviewed-on: https://go-review.googlesource.com/128900Reviewed-by: Bryan C. Mills <bcmills@google.com>

If we're using -mod=vendor then we effectively load
a fake build list from vendor/modules.txt.
Do not write it back to go.mod.

Fixes #26704.

Change-Id: Ie79f2103dc16d0b7fe0c884e77ba726c7e04f2e4
Reviewed-on: https://go-review.googlesource.com/128899Reviewed-by: Bryan C. Mills <bcmills@google.com>

A very common question is
"why is this package or module being kept
by go mod vendor or go mod tidy?"

go mod why answers that question.

Fixes #26620.

Change-Id: Iac3b6bbdf703b4784f5eed8e0f69d41325bc6d7f
Reviewed-on: https://go-review.googlesource.com/128359Reviewed-by: Bryan C. Mills <bcmills@google.com>

go list all was not behaving as documented - it did not pick up
test dependencies except when running in "go test" and "go vet".
It should pick them up always.

Also the module loader was ignoring tests when using "go list -test",
which led to load failures.

Fixing all required adjustments to mod_patterns test.
Removed error-prone exact listings.

Fixes #26279.
Fixes #26906.

Change-Id: I9c5acaf2275be20fd2349859589502190d3e7a78
Reviewed-on: https://go-review.googlesource.com/128358Reviewed-by: Bryan C. Mills <bcmills@google.com>

When a test variant of a package is created, the two versions cannot
share memory for the fields that contain information about their
imports, as these will be different between the two packagse.

Both the Internal.Imports and the Imports fields must be able to be
updated in the test variant without affecting the values of the
original.

Fixes golang/go#26880

Change-Id: Id61fad7d976e179c6c7711a394ce43ec8302fd7a
Reviewed-on: https://go-review.googlesource.com/128836Reviewed-by: Russ Cox <rsc@golang.org>

go mod download provides a way to force downloading
of a particular module version into the download cache
and also to locate its cached files.

Forcing downloads is useful for warming caches, such as
in base docker images.

Finding the cached files allows caching proxies to use
go mod download as the way to obtain module files
on cache miss.

Fixes #26577.
Fixes #26610.

Change-Id: Ib8065bcce07c9f5105868ec1d87887ef4871f07e
Reviewed-on: https://go-review.googlesource.com/128355
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

Fixes golang/go#26372

Change-Id: I30716ba56f829c6e36ccd50471e118084bad7360
Reviewed-on: https://go-review.googlesource.com/128902Reviewed-by: Russ Cox <rsc@golang.org>

See the added comment for the reasoning behind the workaround.

Fixes #26868.

Change-Id: Idede020ec88a49595dc233d9a1346b12691186f4
Reviewed-on: https://go-review.googlesource.com/128815
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Recent versions of Delve pay attention to the debugging changes
for 1.11, which causes different (better!) debugging behavior.
Update the reference data to reflect this.

Change-Id: I2efa165aa71769ace9f7885b4ce3420cd9b2d3a3
Reviewed-on: https://go-review.googlesource.com/128697
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

No test because testing this would require building a new toolchain
with a different experiment.

Fixes #26883

Change-Id: Iadd513d0920ef12463006dd2a61e94370dd13f68
Reviewed-on: https://go-review.googlesource.com/128735
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Updates #26906.

Change-Id: I61b08180aefe9cfc109a1009ca251ee6970eb2df
Reviewed-on: https://go-review.googlesource.com/128879
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Updates #26904.

Change-Id: If7f381c3f3a41bd62c5f8bcf4f92720badcaf5c6
Reviewed-on: https://go-review.googlesource.com/128878Reviewed-by: Russ Cox <rsc@golang.org>

This change replaces https://golang.org/cl/125835.

Updates #26317.

Change-Id: I38ae1f93e5f5c86737a4b489df498c18b179781d
Reviewed-on: https://go-review.googlesource.com/128637Reviewed-by: Russ Cox <rsc@golang.org>

modload.Import contains a loop that looks for the module containing a package.
Because we overload Import to locate both packages and modules, that loop
contains a bunch of special-cases for modules with empty roots.

In this change, we factor out the loop into a new function (QueryPackage) and
use that directly in modget.getQuery. That restores the invariant that
the paths passed to modload.Import must be importable packages, and fixes 'go
get' lookups for packages that have moved between a module and submodules with
the same path prefix.

Updates #26602.

Change-Id: I8bc8340c17f2df062d03ce720f4dc18b2ba406b2
Reviewed-on: https://go-review.googlesource.com/128136Reviewed-by: Russ Cox <rsc@golang.org>

Previously, we reported errors directly in (*loader).load via base.Errorf.
Unfortunately, (*loader).load can be called from contexts in which such errors
should not be considered fatal, such as by load.PackagesAndErrors.

Instead, we save the errors in pkg.err and modify Lookup to return that error.

This change is a bit awkward: we end up suppressing a "no Go files" error for
packages at the root of newly-imported modules, even if they really do contain
source files. I believe that that's due to a special-case lookup for modules in
the build list, which allows us to "validate" imports for modules in the build
list even though we haven't actually downloaded their sources (or verified that
they actually contain the requested package). The fix for that issue is in the
change that follows this one.

Fixes #26602.

Change-Id: I16f00ceb143fbb797cfc3cb07fd08aeb6154575b
Reviewed-on: https://go-review.googlesource.com/127936
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

In my previous change, I didn't use the correct functions for continuing
to record type informations after errors. Change to using the correct
functions, and add a comment to clarify in expr.go.

Updates #22467

Change-Id: I66ebb636ceb2b994db652343430f0551db0050c3
Reviewed-on: https://go-review.googlesource.com/128835
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

This test passes, but it encodes several behaviors that I think are bugs.
I suggest that we check it in as-is, and we can update it as the bugs are fixed.

Change-Id: Icb073de9cb13036dbccadb4ff2cb3169ffb56236
Reviewed-on: https://go-review.googlesource.com/128137
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Change-Id: I16d36c8e22c84a3266520d86e41ff71ef826ae70
Reviewed-on: https://go-review.googlesource.com/128555
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Change-Id: I45a675c5f699b23284a2a50b33cb22882f4b3b80
Reviewed-on: https://go-review.googlesource.com/128016Reviewed-by: Russ Cox <rsc@golang.org>

Fixes #26713.

Tested with Git 2.7.4. Older Gits may or may not work.

Change-Id: Ib72d751388dfbb50030191ae40f788d1402834b2
Reviewed-on: https://go-review.googlesource.com/126956Reviewed-by: Russ Cox <rsc@golang.org>

In previous versions of Go including 1.10, an empty line would break the
alignment of elements within an expression list.

golang.org/cl/104755 changed the heuristic, with the side effect that
empty lines no longer broke the table alignment.

Reintroduce the behavior and add a regression test for it.

Fixes #26352.

Change-Id: I410bcff4cba25c7f8497d46bd7890a2c7ee11d46
Reviewed-on: https://go-review.googlesource.com/125260
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>

One first round of low-hanging fruit, excluding anything unclear.

Also fixed a bug where, if a contributor had different emails under
different CLAs, only the first one was added to AUTHORS.

Updates #12042

Change-Id: Id7b06c885d74b4718ef2d74d149513a7c0f40c91
Reviewed-on: https://go-review.googlesource.com/126215Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

https://golang.org/pkg/bufio/#example_Scanner_custom is not directly
runnable in the playground via godoc, but if I copy+paste the code into
https://play.golang.org/ then it runs just fine.

This seems to be due to the blank identifier being considered unresolved
in the following line in the example:

_, err = strconv.ParseInt(string(token), 10, 32)

But that's the whole point of blank identifiers- they're not supposed
to be resolved.  So let's skip adding the blank identifier to
doc.playExample's unresolved map.

Fixes #26447

Change-Id: I52bc7d99be1d14a61dc012d10c18349d52ba4c51
GitHub-Last-Rev: 9172e9dc1378b0f37f96fc2e1ade4dda9d848398
GitHub-Pull-Request: golang/go#26448
Reviewed-on: https://go-review.googlesource.com/124775Reviewed-by: Robert Griesemer <gri@golang.org>

For contributors looking for new issues to contribute to it can be
difficult to find issues that need a fix and don't already have a fix
being considered. There are several labels that help guide the way
already, like `NeedsFix`, `HelpWanted`. But many issues with this label
will already have a CL. For new contributors this can be especially
difficult.

Fixes #26494

Change-Id: Ifd38ea65e362b4c580207a06f959646e49ac594f
GitHub-Last-Rev: 6d2b54447b2ee754a6d025f5de3ebd8326e035eb
GitHub-Pull-Request: golang/go#26516
Reviewed-on: https://go-review.googlesource.com/125355Reviewed-by: Andrew Bonventre <andybons@golang.org>
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Because methods are type-checked before the receiver base type
is "complete" (i.e., they are checked as part of the receiver
base type), situations occur where aliases of those base types
are used (in those methods) but the alias types are not known
yet (even though their base types are known).

This fix is a temporary work-around that looks syntactically
for the base types of alias types and uses those base types
when we refer to an "incomplete" alias type. The work-around
is completely localized and guarded with a flag so it can be
disabled at short notice.

The correct fix (slated for 1.12) is to decouple type-checking
of methods from their receiver base types. See issue #26854.

Fixes #26390.

Change-Id: I66cc9d834b220c254ac00e671a137cf8a3da59c1
Reviewed-on: https://go-review.googlesource.com/128435Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>

Add my current personal email in both A+C, but keep old one too.
Add my @golang.org email to CONTRIBUTORS.

Change-Id: Idba258e465a8d657372dbeb6cb734744d493e5d4
Reviewed-on: https://go-review.googlesource.com/128416Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The old code used splice on a 2GB []byte when not in short mode, meaning
that running 'go test net' when one had 4GB or less free memory would
easily result in "out of memory" runtime panics.

Instead, use a much smaller size that is still big enough to not fit
into a single splice(2) syscall. The new size is just 5MB, so the test
uses a fraction of the memory it used to, and there's no longer a need
for a different size on short mode.

This also speeds up the test, which goes from ~1.23s to ~0.01s on my
laptop.

Fixes #26867.

Change-Id: Iae1daa5c0995b549f41992f44339be32ca1ee5e4
Reviewed-on: https://go-review.googlesource.com/128535
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Andrei Tudor Călin <mail@acln.ro>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

* TestAtomicCoverpkgAll -> Script/cover_atomic_pkgall.txt and make it
* non-short
* TestCoverpkgAllRuntime -> Script/cover_pkgall_runtime.txt and make it
* non-short
* TestCpuprofileTwice -> Script/cpu_profile_twice.txt and make it
* non-short
* TestGoTestMainTwice -> make it non-short

Updates #26472

Change-Id: I24f3d4c2a8b6e317adb369a1b1426e693f9571ed
Reviewed-on: https://go-review.googlesource.com/126636Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Before this change, 'go get <module>@none' for a module not in the build list
would add the module to go.mod (with the explicit version string "none").
Subsequent go commands would fail with 'invalid module version "none"'.

Change-Id: Iebcaeab89eb19959f0a9aeda836f179962953313
Reviewed-on: https://go-review.googlesource.com/127215Reviewed-by: Russ Cox <rsc@golang.org>