encoding/json: cleanup tests

Perform minor cleanups in tests to improve printout of diffs
and/or follow modern coding style.

This reduces the amount of diffs between v1 and the v2 prototype.

Change-Id: I019bb9642e2135f2fa3eac6abfa6df91c397aa82
Reviewed-on: https://go-review.googlesource.com/c/go/+/642257
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/go/internal/modfetch: do not trust server to send all tags in shallow fetch

Newer git versions (at least git 2.47.1) do not send all the matching tags
for a shallow fetch of a specific hash anymore. The go command assumes
that git servers do this. Since that assumption is broken, use the local
copy of the remote refs list to augment the tags sent by the server.
This makes the cmd/go/internal/modfetch tests pass again with newer git.

Fixes #71261.

Change-Id: I9fd4f3fd7beeb68a522938599f8f3acd887d0b26
Reviewed-on: https://go-review.googlesource.com/c/go/+/642437
Reviewed-by: Michael Matloob <matloob@golang.org>
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Auto-Submit: Russ Cox <rsc@golang.org>

cmd/api: report error in test instead of crashing

https://ci.chromium.org/ui/inv/build-8725798219051312433/test-results?sortby=&groupby=
shows a mysterious failure with this stack:

=== RUN   BenchmarkAll
BenchmarkAll
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x7c497f]

goroutine 20 gp=0xc000004000 m=7 mp=0xc000182808 [running]:
panic({0x81c5e0?, 0xabc6b0?})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:806 +0x168 fp=0xc00c7ffce0 sp=0xc00c7ffc30 pc=0x4ad4c8
runtime.panicmem(...)
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:262
runtime.sigpanic()
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/signal_unix.go:925 +0x359 fp=0xc00c7ffd40 sp=0xc00c7ffce0 pc=0x4af6d9
cmd/api.(*Walker).export(0xc000034100, 0x0)
/home/swarming/.swarming/w/ir/x/w/goroot/src/cmd/api/main_test.go:193 +0x3f fp=0xc00c7ffe08 sp=0xc00c7ffd40 pc=0x7c497f
cmd/api.BenchmarkAll(0xc000214288)
/home/swarming/.swarming/w/ir/x/w/goroot/src/cmd/api/api_test.go:205 +0x207 fp=0xc00c7ffeb0 sp=0xc00c7ffe08 pc=0x7c1c07
testing.(*B).runN(0xc000214288, 0x1)
/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/benchmark.go:202 +0x291 fp=0xc00c7fff78 sp=0xc00c7ffeb0 pc=0x57e611
testing.(*B).run1.func1()
/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/benchmark.go:224 +0x7c fp=0xc00c7fffe0 sp=0xc00c7fff78 pc=0x57f11c
runtime.goexit({})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00c7fffe8 sp=0xc00c7fffe0 pc=0x4b4a61
created by testing.(*B).run1 in goroutine 1
/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/benchmark.go:217 +0x173

So import_ must have returned an error, making pkg nil. Show that error.
Also do the same at the other calls to import_.

Change-Id: Ie782571c4bda3334a86b303f61969cf1cc7d3c32
Reviewed-on: https://go-review.googlesource.com/c/go/+/642438
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

internal/runtime/maps: re-enable some tests

Re-enable tests for stack-allocated maps and fast map accessors.
Those are implemented now.

Update #54766

Change-Id: I8c019702bd9fb077b2fe3f7c78e8e9e10d2263a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/642376
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Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Keith Randall <khr@golang.org>

testing/fstest: fix function name and comment

Change-Id: I17bc68a2e3a96d0dc3d9ddcad40149df37fc4839
Reviewed-on: https://go-review.googlesource.com/c/go/+/642198
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
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Auto-Submit: Damien Neil <dneil@google.com>

cmd/dist: ignore packages with no Go files in BenchmarkAll

This case recently started happening on the builders.
The synctest experiment was recently enabled for some targets (CL 642422).
This caused the list of standard packages to include testing/synctest.
However, BenchmarkAll tests for all configurations;
some did not include testing/synctest. That caused the test to crash.

Change-Id: Icade10af147c2e2bcbac25bf744919083db3e70f
Reviewed-on: https://go-review.googlesource.com/c/go/+/642397
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>

cmd/go: check go version when parsing go.mod fails

Fixes #70979

Change-Id: I6597fe178eed34702eea6cba4eec5174c9203458
Reviewed-on: https://go-review.googlesource.com/c/go/+/639115
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Reviewed-by: Michael Matloob <matloob@golang.org>
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syscall/js: adjust comments to that gofmt does not change them

Change-Id: Ic410375987c0f376d0a975e5a6284de10f08b741
Reviewed-on: https://go-review.googlesource.com/c/go/+/642495
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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go/types, types2: don't panic when instantiating generic alias with wrong number of type arguments

The existing code assumed the type argument count check in
Checker.instance couldn't fail for generic alias types
(matching the code for generic signatures), but it actually
can.

Adjust the code accordingly and document that the result of
Checker.instance may be invalid.

Review all call sites of Checker.instance and make sure we
handle the failure case, or document the code accordingly
(in the case of generic signatures).

When reporting an type argument count error, use the alias
name rather than the alias string representation to match
the error we get for a non-alias type.

While at it, update the manual.go template for ease of use.

Fixes #71198.

Change-Id: I6d19ec6418440e9b49574a2d7dd9825e0af6c2fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/641857
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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spec: fix grammar issue

Change-Id: If4d3b3965762c8979d304a82493c9eb1068ee13c
Reviewed-on: https://go-review.googlesource.com/c/go/+/642037
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>

encoding/json: add cases to TestUnmarshal for fatal syntactic errors

The presence of a syntax error in the input immediately unmarshaling
before unmarshaling into the underlying value.
Otherwise, semantic errors are generally lazily reported and
allow unmarshaling to continue on.

Change-Id: Icf1cfc684e415312d9c8bf739c396ede15299d7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/642295
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

encoding/json: always check resulting Go value for unmarshaling

Even if an error occurs during unmarshal, check the resulting Go value.
The documented API specifies no guarantees on how much of a Go value
will be populated when an error occurs and the "json" package
is technically not bounded by the Go compatibility agreement
to ensure this behavior never changes.

However, there is still value in running checks for
what exactly what is partially mutated in the event of an error
even if this is not guaranteed behavior.

Change-Id: I6e923a31f77768a14c4adfb0d37dbeee5807a4a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/642275
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
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Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/compile: fix write barrier coalescing

We can't coalesce a non-WB store with a subsequent Move, as the
result of the store might be the source of the move.

There's a simple codegen test. Not sure how we might do a real test,
as all the repro's I've come up with are very expensive and unreliable.

Fixes #71228

Change-Id: If18bf181a266b9b90964e2591cd2e61a7168371c
Reviewed-on: https://go-review.googlesource.com/c/go/+/642197
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: David Chase <drchase@google.com>

crypto/internal/fips140test: add hmac DRBG ACVP tests

Adds ACVP test coverage for the hmacDRBG algorithm based on the NIST
spec:
  https://pages.nist.gov/ACVP/draft-vassilev-acvp-drbg.html#section-7.2

The HMAC DRBG algorithm in our fips module is a minimal implementation
tailored for use for generating ECDSA nonces and so lives in
crypto/internal/fips140/ecdsa.

In order to be testable by crypto/internal/fips140test this changeset
exports a ecdsa.TestingOnlyNewDrbg() constructor to support the ACVP use-case.
All FIPS-compatible SHA2 and SHA3 digests are tested.

The ACVP capability registration is customized to match the limited
capabilities of our ecdsa-focused impl. Most notably:

  * reseedImplemented is false - we expect this impl to be invoked
    only once or twice per instantiation and do not support explicit
    reseeding.
  * predResistanceEnabled is false - this requires reseeding.
  * Per mode:
    * derFuncEnabled is always false - this is only used by ctrDRBG.
    * additionalInputLen is 0 for all modes - this is only used with
      preResistanceEnabled.

The other capability values are chosen based on Table 4:
  https://pages.nist.gov/ACVP/draft-vassilev-acvp-drbg.html#section-7.4

Updates #69642

Change-Id: Ia58979d691f912e2ed739a05efb719f580fbbf89
Reviewed-on: https://go-review.googlesource.com/c/go/+/639775
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>

crypto/internal/fips140test: add ML-KEM ACVP tests

Adds ACVP test coverage for ML-KEM based on the NIST spec:

  https://pages.nist.gov/ACVP/draft-celi-acvp-ml-kem.html

Notably we need to update the BoringSSL module version because the
acvptool was only recently updated to support testing ML-KEM.

A few non-test updates are also required for the
crypto/internal/fips140/mlkem package:

* For keyGen tests a new ExpandedBytes768() function is added that
  converts a DecapsualtionKey768 struct into the expanded NIST
  serialization. The existing Bytes() function returns the
  key's seed, while ACVP testing requires the more cumbersome format.
* For decap tests a new TestingOnlyNewDecapsulationKey768()
  constructor is added to produce a DecapsulationKey768 struct from the
  expanded FIPS 203 serialization provided by the ACVP test vector. The
  pre-existing NewDecapsulationKey768() function expects a seed as
  input.

The generate1024.go helper is updated to translate the above changes to
the generated mlkem1024.go implementation.

Both of these new functions are exclusively for ACVP usage and so not
present in the public mlkem API. End users should always prefer to work
with seeds.

Updates #69642

Change-Id: I79784f8a8db00a2ddefdcece4b8de50b033c8f69
Reviewed-on: https://go-review.googlesource.com/c/go/+/637439
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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crypto/rsa: fix GenerateKey flakes for toy-sized keys

Could have fixed this some other ways, including inside the FIPS 140-3
module, but this is small and self-contained, clearly not affecting
production non-toy key sizes. This late in the freeze, a surgical fix
felt best.

Fixes #71185

Change-Id: I6a6a465641357c9d6b076c8a520b221be4210ed5
Reviewed-on: https://go-review.googlesource.com/c/go/+/641755
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Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

runtime/pprof: hide map runtime frames from heap profiles

Heap profiles hide "runtime" frames like runtime.mapassign. This broke
in 1.24 because the map implementation moved to internal/runtime/maps,
and runtime/pprof only considered literal "runtime." when looking for
runtime frames.

It would be nice to use cmd/internal/objabi.PkgSpecial to find runtime
packages, but that is hidden away in cmd.

Fixes #71174.

Change-Id: I6a6a636cb42aa17539e47da16854bd3fd8cb1bfe
Reviewed-on: https://go-review.googlesource.com/c/go/+/641775
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cmd/go: clarify GODEBUG in go help environment

Fixes #37004
Fixes #50444

Change-Id: I7dd5a8c9bd0a2122ff38508cf509369d6d8ad599
Reviewed-on: https://go-review.googlesource.com/c/go/+/632177
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Reviewed-by: Michael Matloob <matloob@golang.org>

cmd/go/internal/mmap: reslice to file size on Windows

The Mmap function returns a Data struct containing a slice with the
mapped contents of the file. Before this change, on Windows, the slice
contained the contents of all the pages of the mapping, including past
the end of the file. Re-slice the slice to the length of the file (if
if the slice is longer) so that the slice contains only the data in the
file.

For #71059

Change-Id: I389b752505b6fa1252b5c6d836a37bc7e662a45d
Reviewed-on: https://go-review.googlesource.com/c/go/+/640155
Reviewed-by: Russ Cox <rsc@golang.org>
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crypto: fix fips140=only detection of SHA-3

Both fips140only and the service indicator checks in
crypto/internal/fips140/... expect to type assert to
crypto/internal/fips140/{sha256,sha512,sha3}.Digest.

However, crypto/sha3 returns a wrapper concrete type around sha3.Digest.

Add a new fips140hash.Unwrap function to turn the wrapper into the
underlying sha3.Digest, and use it consistently before calling into
fips140only or the FIPS 140-3 module.

In crypto/rsa, also made the fips140only checks apply consistently after
the Go+BoringCrypto shims, so we can instantiate the hash, and avoid
having to wrap the New function. Note that fips140=only is incompatible
with Go+BoringCrypto.

Fixes #70879

Change-Id: I6a6a4656ec55c3e13f6cbfadb9cf89c0f9183bdc
Reviewed-on: https://go-review.googlesource.com/c/go/+/640855
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
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encoding/json: improve fidelity of TestUnmarshal for Numbers

In particular, cover the behavior of unmarshaling a JSON string
into a Number type regardless of whether the `string` option
is specified or not.

Change-Id: Ibc55f16860442240bcfeea1fd51aaa76f7e50f67
Reviewed-on: https://go-review.googlesource.com/c/go/+/641416
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Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

crypto/mlkem: merge mlkem768.go and mlkem1024.go to improve godoc

The constants appeared badly ordered and grouped in the godoc before

    const (
        CiphertextSize1024 = 1568
        EncapsulationKeySize1024 = 1568
    )
    const (
        SharedKeySize = 32
        SeedSize = 64
        CiphertextSize768 = 1088
        EncapsulationKeySize768 = 1184
    )

while now they are a single group with the good size first

    const (
        SharedKeySize = 32
        SeedSize = 64
        CiphertextSize768 = 1088
        EncapsulationKeySize768 = 1184
        CiphertextSize1024 = 1568
        EncapsulationKeySize1024 = 1568
    )

No code changes.

Change-Id: I6a6a4656961b1e8c8bca3992aafa33e0575af8a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/640997
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>

crypto/mlkem: add example and improve docs

Change-Id: I6a6a46565f9135d8f18bf219e5b76d5957df5ab0
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Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

go/types, types2: require iterator yield to return bool (work-around)

The original implementation of the type checkers accepted any boolean
result type for yield, but the compiler's front-end had a problem with
it (#71131).

As a temporary fix (for 1.24), adjust the type checkers to insist on the
spec's literal wording and avoid the compiler panic.

Fixes #71131.
For #71164.

Change-Id: Ie25f9a892e58b5e489d399b0bce2d0af55dc3c48
Reviewed-on: https://go-review.googlesource.com/c/go/+/640599
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
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crypto/md5,crypto/sha1: apply fips140=only to Write and Sum, not New

New is called to get a Hash which can then be rejected with an error
(instead of a panic) from fips140only.ApprovedHash.

Also, it's reasonable to call New().Size() and then not use the hash.

Change-Id: I6a6a4656c43528d169c4b28c8b6de48448236d4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/641317
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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crypto/ecdsa: apply fips140=only to deterministic ECDSA hash

Change-Id: I6a6a46567b1eaaef080ac0994afa83db2624a75a
Reviewed-on: https://go-review.googlesource.com/c/go/+/641316
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
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crypto/rsa: apply fips140=only to opts.Hash in SignPSS

Change-Id: I6a6a46569bd364b36f83b9aef640eca94e045173
Reviewed-on: https://go-review.googlesource.com/c/go/+/641315
Reviewed-by: Roland Shoemaker <roland@golang.org>
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Reviewed-by: Russ Cox <rsc@golang.org>
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Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>

crypto/internal/fips140/drbg: avoid global lock on rand state

Having a global lock on the random state (used only in FIPS-140 mode)
introduces contention in concurrent programs. Use an approximately
per-P random state instead, using sync.Pool to manage per-P state.

This code is important to land for the Go 1.24 release because it is
part of the FIPS-140 module that will be validated and certified,
so it will live for a long time. We otherwise wouldn't be able to
correct this contention for at least a year, perhaps more.

At the same time, the code is only used in the FIPS-140 mode,
so there is no risk to normal programs.

Fixes #71155.

Change-Id: I6b779f15ddfdf232f608f5cda08f75906e58114f
Reviewed-on: https://go-review.googlesource.com/c/go/+/641097
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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cmd/go/testdata/script: fix TestScript/env_gocacheprog on Windows

The backslashes on the windows paths will be escaped, so when checking
for them in the regular expression we'd have to have quadruple
backslashes '\\\\'. Since it's difficult to escape $GOCACHEPROG properly
for both json and regexp, just check for a string that ends in
cacheprog$GOEXE. We already check that the proper value is reported in
go env and go env -changed, and the json test case is mostly useful to
verify that GOCACHEPROG shows up in the json output.

For #71059

Change-Id: I52d49de61f2309a139f84c4d232b4cd94546ec8c
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runtime: hold traceAcquire across casgstatus in injectglist

Currently injectglist emits all the trace events before actually calling
casgstatus on each goroutine. This is a problem, since tracing can
observe an inconsistent state (gstatus does not match tracer's 'emitted
an event' state).

This change fixes the problem by having injectglist do what every other
scheduler function does, and that's wrap each call to casgstatus in
traceAcquire/traceRelease.

Fixes #70883.

Change-Id: I857e96cec01688013597e8efc0c4c3d0b72d3a70
Reviewed-on: https://go-review.googlesource.com/c/go/+/638558
Reviewed-by: Michael Pratt <mpratt@google.com>
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internal/sync: fix typo of panic message

Change-Id: I3e7a8498514da1d278acd566d526fdf6278f7d41
Reviewed-on: https://go-review.googlesource.com/c/go/+/638916
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

testing/synctest: add some examples

For #67434

Change-Id: Iebcfc2559a62405fea7e3ceff8cf6c2f50b61def
Reviewed-on: https://go-review.googlesource.com/c/go/+/641176
Reviewed-by: Ian Lance Taylor <iant@google.com>
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cmd/go/internal/modindex: don't write index entry if file open

On Windows, we can't open a file that's already been opened. Before this
change, we'd try to write an index entry if mmapping the entry failed.
But that could happen either if the file doesn't exist or if there was a
problem mmapping an already opened file. Pass through information about
whether the file was actually opened so that we don't try to write to an
already opened file.

For #71059

Change-Id: I6adabe1093fed9ec37e7fafb13384c102786cbce
Reviewed-on: https://go-review.googlesource.com/c/go/+/640577
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
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cmd/internal/hash: stop using md5, sha1

These break if the tools are run with GODEBUG=fips140=only,
which happens if someone sets that during 'go test' (and a test
binary must be built).

The easiest fix is to make the tools compatible with this GODEBUG
by just using sha256 as the underlying hash always. Just in case,
I made the wrappers select different sections of the hash, but
none of the call sites really care.

This CL is for the Go 1.24 release, but a follow-up during the Go 1.25
dev cycle could change all the usage sites to only use Sum32/New32.

For #70514
Fixes #70878

Change-Id: Id5fea779c83df51d1680dbe561e0949c56e8d1e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/641096
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
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cmd/go/internal/cache: handle cacheprog not responding to close

Allow a gocacheprog to not respond to close. The intention of the code
is that after we send the close message we'd ignore errors reading from
the cacheprog's stdout. But before this change if a cacheprog
did not respond to close and we got an EOF reading from the cacheprog's
stdout we'd just ignore all pending requests. The send operation would
then block forever waiting for a response. With this change, we close
all response channels for pending responses if there's an error reading
from the cacheprog's stdout while we're closing. The receives from the
response channels would then proceed (but now have to handle a nil
value). Then the send operation would return and the (*ProgCache).Close
function can proceed.

Fixes #70848

Change-Id: I6631d317ba7aea3f25f714f31cd2aeef0f4d4e3e
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weak: don't panic when calling Value on a zero Pointer

Currently weak.Pointer.Value will panic if the weak.Pointer is
uninitialized (zero value) which goes against it's documentation. Fix
this and add a test. While we're here, also add a test to ensure
weak.Make[T](nil) is equivalent to the zero value of weak.Pointer[T].

Fixes #71153.

Change-Id: I4d9196026360bc42a5bfcb33ce449131ec251dba
Reviewed-on: https://go-review.googlesource.com/c/go/+/641095
Reviewed-by: David Finkel <david.finkel@gmail.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Carlos Amedee <carlos@golang.org>

cmd/compile/internal/syntax: add test case for invalid label use

This case is not properly handled by the type checkers (see issue)
but the compiler uses the parser's label checking so it works as
expected.

For #70974.

Change-Id: I0849376bf7514a9a7730846649c3fe28c91f44ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/640895
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Auto-Submit: Robert Griesemer <gri@google.com>

go/types, types2: expand documentation for Info.Types map

Function types for function (and method) declarations do not
appear in Info.Types maps, only Info.Defs maps, because the
function type is implicit in the declaration and not a proper
(function) type expression. This is true even though the AST
represents these types via an (artificial) FuncType node.

Document this explicitly in the API.

No functional code changes.

Fixes #70908.

Change-Id: I2aa897daed04e7ad0fa8b625d9adc7b423c57387
Reviewed-on: https://go-review.googlesource.com/c/go/+/640776
Reviewed-by: Alan Donovan <adonovan@google.com>
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cmd/go/internal/env: add GOCACHEPROG to go env output

For #71059

Change-Id: I4bbdd14d416dc2e6dae3549a84c16dbef9d4e645
Reviewed-on: https://go-review.googlesource.com/c/go/+/640755
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Austin Clements <austin@google.com>
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crypto/tls: send illegal_parameter on invalid ECHClientHello.type

The spec indicates that if a client sends an invalid ECHClientHello.type
in ClientHelloOuter, the server will abort the handshake with a
decode_error alert.

Define errInvalidECHExt for invalid ECHClientHello.type. If parseECHExt
returns an errInvalidECHExt error, Conn now sends an illegal_parameter
alert.

Fixes #71061.

Change-Id: I240241fe8bbe3e77d6ad1af989794647bfa2ff87
GitHub-Last-Rev: 3d6c233ccd401453bfb1a4fc97fa5deeb5b2fbc8
GitHub-Pull-Request: golang/go#71062
Reviewed-on: https://go-review.googlesource.com/c/go/+/639235
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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crypto/internal/fips140: zeroise integrity test temporary values

There is no point to zeroise anything here because there are no secrets,
but there is a strict FIPS 140-3 test requirement for it.

> TE05.08.02 (Levels 1, 2, 3, and 4): verify that any temporary values
> generated during the integrity test are zeroised upon completion of
> the integrity test

Change-Id: I7b0db075dae9910f8e825a22ca2caa2b4c918980
Reviewed-on: https://go-review.googlesource.com/c/go/+/636556
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Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>

cmd/internal/disasm: correct instruction length handling for riscv64

disasm_riscv64 currently always returns an instruction length of four,
which is not correct if compressed instructions are in use. Return the
length of the decoded instruction, defaulting to two bytes if the
instruction is unknown.

With this change it is possible to correctly objdump a binary that is
written in C and includes compressed instructions:

$ go tool objdump ./hello
TEXT _start(SB)
  :0                    0x5b0                   ef002002                CALL 8(PC)
  :0                    0x5b4                   aa87                    ADD X10, X0, X15
  :0                    0x5b6                   17250000                AUIPC $2, X10
  :0                    0x5ba                   033525a3                MOV -1486(X10), X10
  :0                    0x5be                   8265                    MOV (X2), X11
  :0                    0x5c0                   3000                    ADDI $8, X2, X12
  ...

Fixes #71102

Change-Id: Ia99eb114a98c6d535de872ce8a526cd5e6203fff
Reviewed-on: https://go-review.googlesource.com/c/go/+/639995
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Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
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crypto/rsa: use λ(N) instead of φ(N)

This has no practical advantage, and requires extra variable time code,
but is an explicit FIPS 186-5 requirement.

Note that the new behavior is consistent with Go+BoringCrypto, but not
with Go 1.23. The resulting keys are essentially interchangeable, but
it's not impossible for applications to notice (google/go-tpm#383).

gcd_lcm_tests.txt is from BoringSSL.

Change-Id: I6a6a4656fd5e92912c87bedc667456d0e8787023
Reviewed-on: https://go-review.googlesource.com/c/go/+/639936
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internal/sync: add test from issue 70970

This test checks a use-case of sync.Map that's expected to be more
common in Go 1.24 and beyond, as a concurrent weak cache.

The test will also fail if CompareAndSwap is not properly atomic with
CompareAndDelete, which is what #70970 is actually about. We should have
more explicit tests checking mutual atomicity of operations, but
for now this is OK, and still useful.

For #70970.

Change-Id: I6db508660691586a8af9ad511c9a96432d333343
Reviewed-on: https://go-review.googlesource.com/c/go/+/640737
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net/http: update NewRequestWithContext wrong link to NewRequest

Fixes #70874

Change-Id: Icbcfc95e6b45521880287dcc3bc8609461a3b401
GitHub-Last-Rev: 05276c56b019d8774e8eee881101509cf83c0f3d
GitHub-Pull-Request: golang/go#70877
Reviewed-on: https://go-review.googlesource.com/c/go/+/637035
Reviewed-by: qiu laidongfeng2 <2645477756@qq.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: David Chase <drchase@google.com>
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Revert "internal/sync: optimize CompareAndSwap and Swap"

This reverts CL 606462.

Reason for revert: Breaks atomicity between operations. See #70970.

Change-Id: I1a899f2784da5a0f9da3193e3267275c23aea661
Reviewed-on: https://go-review.googlesource.com/c/go/+/638615
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crypto/ecdsa: drop SEC 1 reference from package doc

FIPS 186-4 used to defer to ANSI X9.62-2005, which is not freely
available, so we were referring to SEC 1 instead. Our new reference,
FIPS 186-5, actually specifies the full algorithm, so there is no need
to refer to SEC 1 anymore.

Change-Id: Ief499d0f7778f3221547993e9e8951ae873aacef
Reviewed-on: https://go-review.googlesource.com/c/go/+/640115
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
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context: use "canceled" in docs to refer to timed-out contexts

In documentation, we've usually but not always referred to a
context with a closed Done channel as "done" rather than
"canceled", to avoid ambiguity between a context canceled
by calling a CancelFunc and one past its deadline.

This actually adds ambiguity, however, since it's common to
see references to a "canceled context" that are intended to
cover contexts past their deadline. If you see "function F
returns if its context is canceled", you can reasonably
assume that F will return if its context passes its
deadline, unless something says otherwise.

Update the context package docs to explicitly state that
a context is canceled when its deadline passes. Drop references
to contexts becoming "done" and just use "canceled" throughout.

Fixes #70945

Change-Id: I99fbd800c6049deaa37015a304f7f9d9a84100e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/640095
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cmd/go/internal/vcweb: close the .access file

For #71112

Change-Id: Ifda4fc8de148c42a2154da54b53d7215b9a6faa0
Reviewed-on: https://go-review.googlesource.com/c/go/+/640175
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crypto/internal/fips140: mark OpenBSD unsupported

Since OpenBSD 7.3, external linking uses -fexecute-only, which breaks
the integrity check. Since we are not validating on OpenBSD anyway,
mark it as unsupported at least for now.

Fixes #70880

Change-Id: I6a6a4656b6c7a97c0962b4158d920f9e6b19678e
Reviewed-on: https://go-review.googlesource.com/c/go/+/639337
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crypto/internal/fips140: add Supported

Move the logic duplicated in multiple places to a central function.

Change-Id: I6a6a4656469c91dd62b0be716ec8367358f4a3e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/639336
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internal/fuzz: remove the exp2 method

It's not being used anywhere, remove it.

Change-Id: I9c3eecacd4e5d44b18243bdec24ad88bc38c82bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/639957
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spec: fix a dead link

Change-Id: If99aa8073cc0e7fe36d3775c635eaaab230fcd04
GitHub-Last-Rev: 06dbd990c72ee0e9c08254addd5ce669bfbe1883
GitHub-Pull-Request: golang/go#71083
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internal/exportdata: add missing return

Change-Id: I9703c6a4a2ae4a608d33cf706106c92e9bd2aef7
GitHub-Last-Rev: 3eee41957d8a2d9908519c798f30d5ccc90c53fb
GitHub-Pull-Request: golang/go#71096
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crypto/internal/fips140/check: remove Enabled

check.Enabled, internal/fips140.Enabled, and crypto/fips140.Enabled were
redundant. Package check can just use internal/fips140.Enabled.

check.Verified is still there for the tests and belt-and-suspenders
assurance in crypto/fips140.Enabled, although it's implied by Enabled.

For #69536

Change-Id: I83921cc925da841aba4da79a9a5e9ac526a3f2bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/638855
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cmd/go: fix two typos in helpdoc.go

Change-Id: Ib750438107db6c82020cfb4abbab52435012b7fc
GitHub-Last-Rev: 3fa9b8c7bc70965c1ec9082b00c9b5a7af9751ef
GitHub-Pull-Request: golang/go#71082
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cmd/go: document GOCACHEPROG in go help environment

This adds GOCACHEPROG to the list of environment variables in "go help
environment" and points to the cacheprog package documentation for
details of the protocol.

Fixes #71032
Updates #59719

Change-Id: Ib8f5804926a8fa59237661076d129c2852665ac3
Reviewed-on: https://go-review.googlesource.com/c/go/+/638997
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cmd/go/internal/cacheprog: drop redundant Prog prefixes

Now that these types are in their own package, drop the unnecessary
Prog prefixes from everything.

Updates #71032
Updates #59719

Change-Id: Id54edf0473754e3b21a71beb72803fb5481206c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/638996
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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cmd/go: move GOCACHEPROG protocol types to their own package

This is a step toward making it easy to point to them in
documentation. The other option is that we copy-paste all of these
type definitions wholesale, which seems ridiculous.

Updates #71032
Updates #59719

Change-Id: I7117e03308ae0adc721ed7a57792c33ba68ce827
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crypto/tls: properly return ECH retry configs

When ECH is rejected, properly take retry configs from the encrypted
extensions message. Also fix the bogo shim to properly test for this
behavior.

We should properly map the full BoringSSL -> Go errors so that we don't
run into a similar failure in the future, but this is left for a follow
up CL.

Fixes #70915

Change-Id: Icc1878ff6f87df059e7b83e0a431f50f1fea833c
Reviewed-on: https://go-review.googlesource.com/c/go/+/638583
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cmd/go: improve GOCACHEPROG types documentation

This is in preparation for adding a "go help" topic for GOCACHEPROG.

Updates #71032
Updates #59719

Change-Id: I9dbbe56fa328dffe89207b5b41a0f37afd51e2b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/638566
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cmd/go: remove references to gopath-get

Fixes #70912

Change-Id: Id87a13f7c9bf972502d14c9674a27f743b849715
Reviewed-on: https://go-review.googlesource.com/c/go/+/639155
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crypto/tls: fix Config.Time in tests using expired certificates

Fixes #71077

Change-Id: I6a6a465685f3bd50a5bb35a160f87b59b74fa6af
Reviewed-on: https://go-review.googlesource.com/c/go/+/639655
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cmd/go: document default GOARM value

For #24904
For #58884

Change-Id: I0fc61f1a0bc6ebb22bdfd7a7b13ef36c68879384
Reviewed-on: https://go-review.googlesource.com/c/go/+/639276
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builtin: use list instead of indentation for comments in cap, len, and make

Using list make the document more readable in HTML and CLI.

Change-Id: Ib84c84656f32806e8612b1ca13938d93f618e27f
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spec: document that string conversions don't guarantee result slice capacity

Fixes #24163.

Change-Id: If389c4abf3b9b6e4eba6f31c3c12779329456df6
Reviewed-on: https://go-review.googlesource.com/c/go/+/637655
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spec: describe representation of values

Add a section on the representation of values:
distinguish between values that are self-contained
and values that contain references while avoiding
the notion of "reference types" which is misleading.

Also, use "predeclared identifier nil" rather than
"predeclared value nil" because it is the identifier
that is predeclared.

Fixes #5083.

Change-Id: I2235673c6404f2c055f195e879f198c7ab246d58
Reviewed-on: https://go-review.googlesource.com/c/go/+/635801
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crypto/tls: fix misspelling in comment

Change-Id: Ie36a19ed6d6922e68f98e43745a417a24f8a7828
GitHub-Last-Rev: 6fb32e3d1d4f35704d466b53796e8ddeaf936d72
GitHub-Pull-Request: golang/go#71060
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encoding/binary: add documentation for endian methods

While the comments are on an unexported type, gopls correctly
shows them when using the exported vars LittleEndian and BigEndian.

Fixes #68083

Change-Id: I53668c3140ad00f7b58437be74e6df773e2916f1
GitHub-Last-Rev: cef717123cdc632b59683f4ce55aee6c286ca4c7
GitHub-Pull-Request: golang/go#71058
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os: mention fsys modifications during CopyFS

Fixes #70465

Change-Id: I47055df9ca5b1df21a361b0b8eea4c7d157e6403
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encoding/json: remove suggestion on Unmarshaler with JSON null

It is not true that Unmarshal always treats a JSON null
as being equivalent to a no-op.
For bools, ints, uints, floats, strings, arrays, and structs,
it treats a JSON null as a no-op. However, for []byte, slice,
map, pointer, or interface, it zeros the underlying value.

Remove this suggestion as the actual behavior is inconsistent.

Note that the proposed behavior in v2 Unmarshal is to consistently
zero out the underlying value.

Change-Id: I02cef0bf7919f25cfd0aceb04486d37498761181
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cmd/link: document that -s implies -w

Existing documentation does not reference implicit behavior.
Updates the documentation to reflect that -s implies -w.

Fixes #71051

Change-Id: I5c139c37f5f78596365e38479be4c865a4d4dd62
GitHub-Last-Rev: a3e462c4168284529ea1b0d03bc25fb1c12f1da5
GitHub-Pull-Request: golang/go#71053
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go/doc: resolve imports before predeclared identifiers in examples

Fixes #70611
Fixes #70630

Change-Id: I868e68dbdf50ce34259eeef7b3d7985ede1f4c0b
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unique: fix typo

Change-Id: I9f66e3d7aa7b546ebf34d6aa8c7a6558bf35ca82
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encoding/json: expand and modernize TestInterfaceSet

Add more test cases to cover a wider range of edge cases.
Use a generic addr function to take the address of a value.
Even though redudant, explicitly include a cast to the
top-level Go type so that it is more readable what the
expected input and ouput types are.

Change-Id: I3ef68df6f1beb903ae237cd49f3dcb91e5270fe7
Reviewed-on: https://go-review.googlesource.com/c/go/+/638256
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cmd/go/internal/work: allow @ character in some -Wl, linker flags on darwin

The GNU linker interprets @file as "read command-line options from file".
Thus, we forbid values starting with @ on linker flags. However, this
causes a problem when targeting Darwin. @executable_path, @loader_path, and
@rpath are special values used in Mach-O to change the library search path
and can be used in conjunction with the -install_name and -rpath linker
flags. Since the GNU linker does not support Mach-O, targeting Darwin
implies not using the GNU linker. Therefore, we allow @ in the linker flags
if and only if cfg.Goos == "darwin".

Fixes #40559

Change-Id: I0896758f0835e444ea0d501ea3fd8423cff97a27
GitHub-Last-Rev: 2b81dcd12e7ae0bbb77deccc9973f84a3aa6d750
GitHub-Pull-Request: golang/go#70939
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doc/initial: remove fixed-width spacing notice

Ever since CL 362015 in 2021 it hasn't been necessary to set
"fixed-width phrases with non-fixed-width spaces" because the site CSS
now takes care of this typesetting convention.

Change-Id: Id84f711b65cddf389dc485aa362b23c9c531cbfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/638565
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cmd/compile: improve compiler directive docs

This section has gotten long enough that it deserves to be multiple
sections. This also allows us to better structure information shared
by subsets of directives. In particular, this enables a self-contained
section on the wasm directives.

Updates #66984.

Change-Id: I062081d46c6b0aef7887fdaf9efae80f32ad4b21
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iter: improve documentation with iterator example

In introducing iterators, package iter gives an example of how to
use an iterator in a range-over-func loop, but currently does not
give an example of what an iterator implementation might look like.

This change adds the example of map.Keys() before the usage example.
Additionally, it references to the Go blog for further examples,
as well as the language spec about for-range loops.

Fixes #70986

Change-Id: I7108d341d314d7de146b4c221700736c943a9f5d
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crypto/mlkem: swap order of return values of Encapsulate

Per FIPS 203 (https://csrc.nist.gov/pubs/fips/203/final), the order of return values should be sharedKey, ciphertext. This commit simply swaps those return values and updates any consumers of the Encapsulate() method to respect the new order.

Fixes #70950

Change-Id: I2a0d605e3baf7fe69510d60d3d35bbac18f883c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/638376
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Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>

weak: fix typo in warning about tiny allocator optimization

Fixes #70972.

Change-Id: Ib04c2a3129a1da651a0b4674b372aec73966115a
Reviewed-on: https://go-review.googlesource.com/c/go/+/638377
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cmd/link, runtime: apply a delta to RODATA->DATA relocations

On AIX, an R_ADDR relocation from an RODATA symbol to a DATA
symbol does not work, as the dynamic loader can change the address
of the data section, and it is not possible to apply a dynamic
relocation to RODATA. In order to get the correct address, we
apply the delta between unrelocated and relocated data section
addresses at run time. The linker saves both the unrelocated and
the relocated addresses, so we can compute the delta.

This is possible because RODATA symbols are generated by the
compiler and so we have full control of. On AIX, the only case
is the on-demand GC pointer masks from the type descriptors, for
very large types.

Perhaps there is a better way.

Fixes #70483.

Change-Id: I2664c0a813b38f7b146794cb1e73ccf5e238ca65
Reviewed-on: https://go-review.googlesource.com/c/go/+/638016
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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internal/goexperiment: run go generate for synctest

Updates #70954

Change-Id: If5f9c8b8b820b1cc4e41e76b50038c6155b575a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/638355
Reviewed-by: David Chase <drchase@google.com>
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cmd/go/internal/work: allow single character values in -Wl, linker flags

Allow single character values in -Wl, linker flags by modifying the regular
expressions to use the star operator instead of the plus operator.

Fixes #70924

Change-Id: Ie7940197cc8503440a87c6b29409a13377a20534
GitHub-Last-Rev: 42e8ac87d600239ceff434eb202e2747f2cceb3c
GitHub-Pull-Request: golang/go#70937
Reviewed-on: https://go-review.googlesource.com/c/go/+/638035
Auto-Submit: Ian Lance Taylor <iant@google.com>
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net: document LookupTXT behavior with multiple strings per record

CL 8966 ("net: allow a dns TXT record to contain more than
one <character-string>") concatenates strings in a TXT record. Document
that behavior, since it's not obvious whether the strings will be
concatenated or accumulated in the returned slice.

Change-Id: I6acb27b296290361a95a6058a056f8e7c2df9a2b
GitHub-Last-Rev: ec0726c7b83a56773d0ac4a86cbfc89c6f4884c9
GitHub-Pull-Request: golang/go#65233
Reviewed-on: https://go-review.googlesource.com/c/go/+/557695
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/compile: load map length with the right type

len(map) is lowered to loading the first field of the map
structure, which is the length. Currently it is a load of an int.
With the old map, the first field is indeed an int. With Swiss
map, however, it is a uint64. On big-endian 32-bit machine,
loading an (32-bit) int from a uint64 would load just the high
bits, which are (probably) all 0. Change to a load with the proper
type.

Fixes #70248.

Change-Id: I39cf2d1e6658dac5a8de25c858e1580e2a14b894
Reviewed-on: https://go-review.googlesource.com/c/go/+/638375
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Reviewed-by: Keith Randall <khr@golang.org>

internal/syscall/unix: apply fstatat fix to linux/mips64le

Apply CL 633280 to linux/mips64le, as it has the same struct as
mips64.

Updates #70659.

Change-Id: Ibab635e69e44682eb214bf6a00f4cd75816b2d34
Reviewed-on: https://go-review.googlesource.com/c/go/+/637739
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slices: document two oddities

Fixes #70935

Change-Id: Idf4a38a05ba595d616b6469a14419ff873bbd354
Reviewed-on: https://go-review.googlesource.com/c/go/+/638095
Reviewed-by: Keith Randall <khr@golang.org>
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runtime/pprof: continued attempt to deflake the VMInfo test.

This change catches an additional error message to trigger skipping
the test when the underlying system is failing.

Fixes #62352

Change-Id: I5c12b20f3e9023597ff89fc905c0646a80ec4811
Reviewed-on: https://go-review.googlesource.com/c/go/+/637995
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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runtime: test trap panic parsing in TestTracebackSystem

This mirrors https://go.dev/cl/637755, as x/telemetry is now aware of
sigpanic preceding trap frames.

For #70637.

Change-Id: I13a775f25e89047702d4f2d463ce3210bcf192d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/638015
Reviewed-by: Cherry Mui <cherryyz@google.com>
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net/http: fix nil panic in test

Observed on a builder in an unrelated CL.
https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8728107031663629713/+/u/step/11/log/2

goroutine 27937 gp=0xc00000f6c0 m=20 mp=0xc000085008 [running]:
panic({0x560ac0?, 0xa1f400?})
C:/b/s/w/ir/x/w/goroot/src/runtime/panic.go:806 +0x168 fp=0xc00043fac8 sp=0xc00043fa18 pc=0xa5f88
testing.tRunner.func1.2({0x560ac0, 0xa1f400})
C:/b/s/w/ir/x/w/goroot/src/testing/testing.go:1734 +0x219 fp=0xc00043fb78 sp=0xc00043fac8 pc=0x1537f9
testing.tRunner.func1()
C:/b/s/w/ir/x/w/goroot/src/testing/testing.go:1737 +0x359 fp=0xc00043fce0 sp=0xc00043fb78 pc=0x153259
panic({0x560ac0?, 0xa1f400?})
C:/b/s/w/ir/x/w/goroot/src/runtime/panic.go:787 +0x132 fp=0xc00043fd90 sp=0xc00043fce0 pc=0xa5f52
runtime.panicmem(...)
C:/b/s/w/ir/x/w/goroot/src/runtime/panic.go:262
runtime.sigpanic()
C:/b/s/w/ir/x/w/goroot/src/runtime/signal_windows.go:401 +0x198 fp=0xc00043fdd8 sp=0xc00043fd90 pc=0x87938
net/http_test.testTransportIdleConnTimeout.func3(...)
C:/b/s/w/ir/x/w/goroot/src/net/http/transport_test.go:5503
net/http_test.testTransportIdleConnTimeout(0xc000e83340, {0x5ec863, 0x2})
C:/b/s/w/ir/x/w/goroot/src/net/http/transport_test.go:5522 +0x4c1 fp=0xc00043ff20 sp=0xc00043fdd8 pc=0x47a841
net/http_test.run[...].func1()
C:/b/s/w/ir/x/w/goroot/src/net/http/clientserver_test.go:93 +0xfe fp=0xc00043ff70 sp=0xc00043ff20 pc=0x49a21e
testing.tRunner(0xc000e83340, 0xc0004687b0)
C:/b/s/w/ir/x/w/goroot/src/testing/testing.go:1792 +0xcb fp=0xc00043ffc0 sp=0xc00043ff70 pc=0x152e4b
testing.(*T).Run.gowrap1()
C:/b/s/w/ir/x/w/goroot/src/testing/testing.go:1851 +0x25 fp=0xc00043ffe0 sp=0xc00043ffc0 pc=0x153e65
runtime.goexit({})
C:/b/s/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00043ffe8 sp=0xc00043ffe0 pc=0xadfe1
created by testing.(*T).Run in goroutine 27899
C:/b/s/w/ir/x/w/goroot/src/testing/testing.go:1851 +0x3f6

Change-Id: I3f8bd7c7863b5031ff43d4837dfe11d26ac75652
Reviewed-on: https://go-review.googlesource.com/c/go/+/637897
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
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cmd/go: drop fips140 build ID hacks

We were trying to keep all binaries stale in fips140 mode
so that every build would write and leave behind a fips.o
in the work directory for use by validating labs.
That breaks various staleness checks, including the one
in cmd/dist during GOFIPS140=latest ./make.bash.

Revert the fips140 hack. Validating labs will still be able
to find the fips.o when building against a clean cache.

Add the default godebug to the link hash though,
so that it is clear that GOFIPS140=latest
and GOFIPS140=off binaries have different hashes.
(The only effect is the default GODEBUG setting.)
They already had different hashes, because the
default GODEBUG ends up in p.Internal.BuildInfo,
and that gets hashed in a "modinfo" line,
but better to be explicit.

Fixes #70873.

Change-Id: I49a38c180208098c2b6720facef48f4e96d44c54
Reviewed-on: https://go-review.googlesource.com/c/go/+/637116
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
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cmd/go: fix two-step toolchain upgrade through go install, GOTOOLCHAIN

If we do one upgrade because of a go install target's go.mod file,
we still might need a second upgrade to implement the GOTOOLCHAIN
minimum. Instead of allowing a two-step switch (which we were
cutting off anyway), skip the first step and go straight to the
GOTOOLCHAIN min upgrade.

Fixes #69051.

Change-Id: I16f060f473574d8b8f84c55fae2fd0cdabc8aa19
Reviewed-on: https://go-review.googlesource.com/c/go/+/637496
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cmd/dist: skip fips140test in exe mode on Android

Android does not support non-PIE linking. Skip the test.

Change-Id: I53071538c82f1e1f96eed1a2619f92eacd18d263
Reviewed-on: https://go-review.googlesource.com/c/go/+/637495
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weak: improve grammar in doc comments

Change-Id: I577b8a6bf2b7d899cc7ff7211c73549c90db9d94
Reviewed-on: https://go-review.googlesource.com/c/go/+/637355
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crypto/ecdsa: fix condition for fips140=only check

Fixes #70894

Change-Id: I78c9f2e46006ffc5f1d2886218f8aaaf3f1b59eb
GitHub-Last-Rev: 11f0b452f57aacc40139eab557a8bed1386ad07b
GitHub-Pull-Request: golang/go#70904
Reviewed-on: https://go-review.googlesource.com/c/go/+/637455
Reviewed-by: Filippo Valsorda <filippo@golang.org>
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crypto/tls: normalize spelling of "ClientHello" in comments

Change-Id: I2b62fb37ae390c42682354eaa2a9d03159563b6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/637179
Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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crypto/pbkdf2: update RFC reference in package doc

Now that it's published, we don't need to explain how we diverge from
the old one.

Change-Id: If2c22e89dd1b9fc531a363b5fb7b1eb5720eb84e
Reviewed-on: https://go-review.googlesource.com/c/go/+/637215
Auto-Submit: Filippo Valsorda <filippo@golang.org>
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cmd/go,crypto: reject using Go+BoringCrypto and fips140 together

The combination is untested and nonsensical. Both are solutions to the
same problem.

For #69536

Change-Id: I95cc3baaf03b64ce08096e304e311a29e9577385
Reviewed-on: https://go-review.googlesource.com/c/go/+/637177
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testing: support B.Context and F.Context

CL 603959 added T.Context for #36532.

The discussion on the proposal only mentions t.Context.
However, the implementation of CL 603959 also added B.Context and F.Context.
They were added to the API listing, and B.Context was mentioned in
the release notes.

Unfortunately, the new B.Context and F.Context methods always
returned nil, rather than a context.Context value.

This change adds a working implementation of B.Context and F.Context.

For #36532
Fixes #70866

Change-Id: I8a44e6649fb658e4f641ffb7efd08b4374f578ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/637236
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