Commit Graph

38651 Commits

Author SHA1 Message Date
Russ Cox 4f1b0a44cb all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp
As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-09 19:12:23 +00:00
Dmitri Shuralyov 5627a4dc30 runtime/metrics: simplify test to support more environments
go test sets the working directory to that of the package being tested,
so opening one of the package source files can be done in a simpler way.
This also allows the test to run in more environments, for example when
GOROOT_FINAL¹ is set.

Also remove the testenv.HasSrc-like check for Go source. The doc.go
file is a part of the package being built and tested, so it's expected
to be available. If it's important for this test to handle when a test
binary is built with go test -c and executed elsewhere without package
source files, something more than testenv.HasSrc would be needed.

¹ https://golang.org/cmd/go/#hdr-Environment_variables

Fixes #43085.

Change-Id: Ie6ade395a8fc7beebdadbad6f4873800138dfc26
Reviewed-on: https://go-review.googlesource.com/c/go/+/276452
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2020-12-09 16:57:37 +00:00
Ikko Ashimine db6032dd0c cmd/compile: fix message typo
occurences -> occurrences

Change-Id: Ia81671f5de8a24ddd303a77b4580e8c726f29122
GitHub-Last-Rev: 11f9ab9f8c
GitHub-Pull-Request: golang/go#43097
Reviewed-on: https://go-review.googlesource.com/c/go/+/276612
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-12-09 16:38:26 +00:00
Michael Fraenkel 854a2f8e01 net/http: add connections back that haven't been canceled
Issue #41600 fixed the issue when a second request canceled a connection
while the first request was still in roundTrip.
This uncovered a second issue where a request was being canceled (in
roundtrip) but the connection was put back into the idle pool for a
subsequent request.
The fix is the similar except its now in readLoop instead of roundTrip.
A persistent connection is only added back if it successfully removed
the cancel function; otherwise we know the roundTrip has started
cancelRequest.

Fixes #42942

Change-Id: Ia56add20880ccd0c1ab812d380d8628e45f6f44c
Reviewed-on: https://go-review.googlesource.com/c/go/+/274973
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2020-12-09 03:06:41 +00:00
Haoran Luo 6fa06d960b runtime: prevent stack growth after fork in runtime.sigfillset
This fixes the unexpected growth of stack in child process, which
is caused by stack checking code in runtime.sigfillset called from
runtime.sigset while clearing the signal handlers in child process.

The redundant stack checking code is generated due to missing
'//go:nosplit' directive that should be annotated for
runtime.sigfillset.

Fixes #43066
Updates #21314

Change-Id: I9483a962a4b0747074313991841e2440ee32198c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276173
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2020-12-09 03:01:58 +00:00
Keith Randall 31496cfde5 cmd/vet: vendor in x/tools, enable framepointer vet check
Vendor in latest x/tools.
Add framepointer vet check to vet.

Fixes #43014

Change-Id: Ife72f85b1261aa60c0028041c58040d60a40918a
Reviewed-on: https://go-review.googlesource.com/c/go/+/276372
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-08 22:58:14 +00:00
Rob Findley 01b76d5fbc go/types: correct error position for inherited const init expressions
This is a port of CL 275517 from the dev.typeparams branch, to fix the
positioning of error messages for invalid const init expressions that
are inherited.

Differences from CL 275517:
 + The inherited flag is added to the constDecl intermediate
   representation.
 + The errpos override is made a positioner, the internal interface
   used by go/types to capture error position and span. For const decls
   errpos is just set to a singular point, but using positioner is
   correct and causes span start and end positions to also be
   overridden.
 + Test cases are updated to assert on just 'overflows', as the go/types
   error message is, for example, "cannot use 255 + iota (untyped int
   constant 256) as byte value in constant declaration (overflows)".
   This is more verbose than the compiler's "constant 256 overflows
   byte", but changing that is out of scope.

Fixes #42991

Change-Id: I0a71d2290f7fff5513f2a6e49b83e6f0f4da30e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/276172
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-12-08 19:45:23 +00:00
Joel Sing 9c91cab0da runtime: correct sigfwd on openbsd/mips64
Position independent code expects that R25 (aka $t9) contains the address of the
called function. As such, use R25 when calling from sigfwd.

Change-Id: I66b2b9bfa1f1bb983c7385eb2eaa19d9cd87d9fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/275893
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-08 01:46:45 +00:00
Ian Lance Taylor 9b8c272558 reflect: document multiple keys in struct tags
For #40281
Fixes #42959

Change-Id: Ibc4769fda1592a1373ec720ea30baf319c0a0136
Reviewed-on: https://go-review.googlesource.com/c/go/+/274448
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-12-07 22:16:21 +00:00
Russ Cox 7ad6596c47 io/fs: fix Sub method error text
Noticed in (and alternative to) CL 275520.

Change-Id: If6c107ee9928dd1910facd4dc66da7234cb91c39
Reviewed-on: https://go-review.googlesource.com/c/go/+/275879
Trust: Russ Cox <rsc@golang.org>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
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2020-12-07 21:01:46 +00:00
Tonis Tiigi 50cdb2d8e9 runtime/cgo: fix building on musl
sys/unistd.h only exists in glibc and not in musl so use the standard
location. This is a regression from CL 210639

Change-Id: Idd4c75510d9829316b44300c36c34df6d667cc05
GitHub-Last-Rev: 0fa4162f1c
GitHub-Pull-Request: golang/go#43038
Reviewed-on: https://go-review.googlesource.com/c/go/+/275732
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Andrew G. Morgan <agm@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Filippo Valsorda <filippo@golang.org>
2020-12-07 18:02:09 +00:00
Martin Möhrmann c155931974 internal/cpu: add darwin/arm64 CPU feature detection support
Fixes #42747

Change-Id: I6b1679348c77161f075f0678818bb003fc0e8c86
Reviewed-on: https://go-review.googlesource.com/c/go/+/271989
Trust: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Martin Möhrmann <martisch@uos.de>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-07 07:59:54 +00:00
Ikko Ashimine 3b2a578166 internal/cpu: fix typo in cpu_arm64.go
auxillary -> auxiliary

Change-Id: I7c29c4a63d236c3688b8e4f5af70650d43cd89c0
GitHub-Last-Rev: d4a18c71a1
GitHub-Pull-Request: golang/go#43024
Reviewed-on: https://go-review.googlesource.com/c/go/+/275592
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Keith Randall <khr@golang.org>
2020-12-05 16:20:01 +00:00
Jason A. Donenfeld be9379f8a8 syscall: correct CertOpenStore to expect a 0 return value on failure
According to [1], this function returns NULL when it errors, rather than
INVALID_HANDLE_VALUE, which other Win32 functions return. This was
pointed out in CL 273446 for the x/sys package, and this patch here
cleans it up for the syscall package and updates the vendored x/sys
package using the usual `go get/go mod vendor` dance. The function is
currently in use by crypto/x509/root_windows.go, which calls
CertOpenStore(CERT_STORE_PROV_MEMORY), which I assume can fail under OOM
or other weird conditions. Quick reversing indicates that [1] is
correct, as there's a `xor eax, eax` in the error paths of the function
just before jumping to the epilogue.

[1] https://docs.microsoft.com/en-us/windows/win32/api/wincrypt/nf-wincrypt-certopenstore#return-value

Change-Id: I77c0b0319c13313212f8710785252c494da56ed5
Reviewed-on: https://go-review.googlesource.com/c/go/+/273827
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
2020-12-05 12:36:42 +00:00
zikaeroh 0b99ea3b16 cmd/vendor: sync pprof@v0.0.0-20201203190320-1bf35d6f28c2
Pulls in a fix to make versioned import paths more readable in pprof's
graph view.

Updated via the instructions in README.vendor.

Updates #36905

Change-Id: I6a91de0f4ca1be3fc69d8e1a39ccf4f5bd0387ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/275513
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-04 21:49:30 +00:00
Russ Cox 478bde3a43 io/fs: add Sub
Sub provides a convenient way to refer to a subdirectory
automatically in future operations, like Unix's chdir(2).

The CL also includes updates to fstest to check Sub implementations.

As part of updating fstest, I changed the meaning of TestFS's
expected list to introduce a special case: if you list no expected files,
that means the FS must be empty. In general it's OK not to list all
the expected files, but if you list none, that's almost certainly a
mistake - if your FS were broken and empty, you wouldn't find out.
Making no expected files mean "must be empty" makes the mistake
less likely - if your file system ever worked, then your test will keep
it working.

That change found a testing bug: embedtest was making exactly
that mistake.

Fixes #42322.

Change-Id: I63fd4aa866b30061a0e51ca9a1927e576d6ec41e
Reviewed-on: https://go-review.googlesource.com/c/go/+/274856
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-04 16:49:30 +00:00
Bryan C. Mills 5d4569197e cmd/go/internal/modload: fix minor errors in comments
Change-Id: I38848e7bcd5dfa9f7feb415e1c54921768bf1ab8
Reviewed-on: https://go-review.googlesource.com/c/go/+/275295
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-12-04 16:31:09 +00:00
Cherry Zhang 21cfadf0dc runtime: avoid receiving preemotion signal while exec'ing
The iOS kernel has the same problem as the macOS kernel. Extend
the workaround of #41702 (CL 262438 and CL 262817) to iOS.

Updates #35851.

Change-Id: I7ccec00dc96643c08c5be8b385394856d0fa0f64
Reviewed-on: https://go-review.googlesource.com/c/go/+/275293
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-04 16:04:44 +00:00
Russ Cox 37588ffcb2 cmd/go, embed: exclude .* and _* from embedded directory trees
Discussion on #42328 led to a decision to exclude files matching
.* and _* from embedded directory results when embedding an
entire directory tree.

This CL implements that new behavior.

Fixes #42328.

Change-Id: I6188994e96348b3449c7d9d3d0d181cfbf2d4db1
Reviewed-on: https://go-review.googlesource.com/c/go/+/275092
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-04 13:50:44 +00:00
Cherry Zhang 37a32a1833 cmd/compile: make sure address of offset(SP) is rematerializeable
An address of offset(SP) may point to the callee args area, and
may be used to move things into/out of the args/results. If an
address like that is spilled and picked up by the GC, it may hold
an arg/result live in the callee, which may not actually be live
(e.g. a result not initialized at function entry). Make sure
they are rematerializeable, so they are always short-lived and
never picked up by the GC.

This CL changes 386, PPC64, and Wasm. On AMD64 we already have
the rule (line 2159). On other architectures, we already have
similar rules like
(OffPtr [off] ptr:(SP)) => (MOVDaddr [int32(off)] ptr)
to avoid this problem. (Probably me in the past had run into
this...)

Fixes #42944.

Change-Id: Id2ec73ac08f8df1829a9a7ceb8f749d67fe86d1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275174
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-12-03 21:34:39 +00:00
Michael Pratt b78b427be5 runtime, time: strictly enforce when, period constraints
timer.when must always be positive. addtimer and modtimer already check
that it is non-negative; we expand it to include zero. Also upgrade from
pinning bad values to throwing, as these values shouldn't be possible to
pass (except as below).

timeSleep may overflow timer.nextwhen. This would previously have been
pinned by resetForSleep, now we fix it manually.

runOneTimer may overflow timer.when when adding timer.period. Detect
this and pin to maxWhen.

addtimer is now too strict to allow TestOverflowRuntimeTimer to test an
overflowed timer. Such a timer should not be possible; to help guard
against accidental inclusion siftup / siftdown will check timers as it
goes. This has been replaced with tests for period and sleep overflows.

Change-Id: I17f9739e27ebcb20d87945c635050316fb8e9226
Reviewed-on: https://go-review.googlesource.com/c/go/+/274853
Trust: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-03 21:23:16 +00:00
Michael Pratt b635e4b808 time, runtime: don't set timer when = 0
timer when == 0, in the context of timer0When and timerModifiedEarliest,
is a sentinel value meaning there are no timers on the heap.
TestCheckRuntimeTimerOverflow reaching into the runtime to set a timer
to when = 0 when it is otherwise not possible breaks this invariant.

After golang.org/cl/258303, we will no longer detect and run this timer,
thus blocking any other timers lower on the heap from running. This
manifests as random timers failing to fire in other tests.

The need to set this overflowed timer to when = 0 is gone with the old
timer proc implementation, so we can simply remove it.

Fixes #42424

Change-Id: Iea32100136ad8ec1bedfa77b1e7d9ed868812838
Reviewed-on: https://go-review.googlesource.com/c/go/+/274632
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Pratt <mpratt@google.com>
2020-12-03 21:21:23 +00:00
Bryan C. Mills 7f5a3196c9 cmd/go/internal/modload: rename constants to reflect that lazy loading is not yet implemented
Updates #36460
Updates #42288

Change-Id: I82a3b7e97a8e2f83bae2318ca9fb5c38c0c811cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/275172
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-03 20:11:10 +00:00
Jonathan Albrecht b1369d5862 math/big: remove the s390x assembly for shlVU and shrVU
The s390x assembly for shlVU does a forward copy when the shift amount s
is 0. This causes corruption of the result z when z is aliased to the
input x.

This fix removes the s390x assembly for both shlVU and shrVU so the pure
go implementations will be used.

Test cases have been added to the existing TestShiftOverlap test to
cover shift values of 0, 1 and (_W - 1).

Fixes #42838

Change-Id: I75ca0e98f3acfaa6366a26355dcd9dd82499a48b
Reviewed-on: https://go-review.googlesource.com/c/go/+/274442
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Trust: Robert Griesemer <gri@golang.org>
2020-12-03 18:43:06 +00:00
Martin Möhrmann dda2991c2e internal/cpu: disable FMA when OSXSAVE is not enabled on x86
All instructions in the FMA extension on x86 are VEX prefixed.
VEX prefixed instructions generally require OSXSAVE to be enabled.

The execution of FMA instructions emitted by the Go compiler on amd64
will generate an invalid opcode exception if OSXSAVE is not enabled.

Fixes #41022

Change-Id: I49881630e7195c804110a2bd81b5bec8cac31ba8
Reviewed-on: https://go-review.googlesource.com/c/go/+/274479
Trust: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-12-03 16:31:53 +00:00
Russ Cox 5246fa5e75 mime/multipart: handle ReadForm(math.MaxInt64) better
Returning an error about integer overflow is needlessly pedantic.
The meaning of ReadForm(MaxInt64) is easily understood
(accept a lot of data) and can be implemented.

Fixes #40430.

Change-Id: I8a522033dd9a2f9ad31dd2ad82cf08d553736ab9
Reviewed-on: https://go-review.googlesource.com/c/go/+/275112
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-03 16:05:09 +00:00
Cherry Zhang 07cba70d57 cmd/compile, runtime: use __msan_memmove for moving data, split msanread to fields
Currently, for data moving, we generate an msanread of the source,
followed by an msanwrite of the destination. msanread checks
the source is initialized.

This has a problem: if the source is an aggregate type containing
alignment paddings, the padding bytes may not be thought as
initialized by MSAN. If we copy the aggregate type by value, if
it counts as a read, MSAN reports using uninitialized data. This
CL changes it to use __msan_memmove for data copying, which tells
MSAN to propagate initialized-ness but not check for it.

Caveat: technically __msan_memmove is not a public API of MSAN,
although the C compiler does generate direct calls to it.

Also, when instrumenting a load of a struct, split the
instrumentation to fields, instead of generating an msanread for
the whole struct. This skips padding bytes, which may not be
considered initialized in MSAN.

Fixes #42820.

Change-Id: Id861c8bbfd94cfcccefcc58eaf9e4eb43b4d85c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/270859
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
2020-12-03 15:40:11 +00:00
Carlos Alexandro Becker 48838c35dc go/parser: ignore subdirectories in ParseDir
Issue and PR on GoReleaser:
- https://github.com/goreleaser/goreleaser/issues/1897
- https://github.com/goreleaser/goreleaser/pull/1899

Fixes #42951.

Change-Id: Ia0d6018e0bad59cd60cd600188c368c431032a4b
GitHub-Last-Rev: be59d85fe2
GitHub-Pull-Request: golang/go#42581
Reviewed-on: https://go-review.googlesource.com/c/go/+/269897
Trust: Robert Griesemer <gri@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-12-02 23:05:56 +00:00
Filippo Valsorda 2d0258d495 crypto/ed25519/internal/edwards25519: fix typo in comments
Change-Id: I8133762d53d9e5d3cc13e0f97b9679a3248a7f0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/273087
Trust: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
2020-12-02 20:17:57 +00:00
Russ Cox 05ddb879c7 cmd/go: fix TestNewReleaseRebuildsStalePackagesInGOPATH
Broken during CL 267719.

Change-Id: If5acb8231d3053c0e714a79c02cb56eaba6e74e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/274854
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-12-02 18:59:57 +00:00
Russ Cox ac38af2f3d cmd/go: stop tests from using network during -short
It turned out that "go get" was using the network to look up
https://github.com?go-get=1 while resolving github.com/google/go-cmp,
and that is not the fastest page to load.
Stop that lookup by adjusting the path prefixes in the vcs table.

It also turned out that "go get" was using the network to look up
https://rsc.io?go-get=1 while resolving https://rsc.io/nonexist.svn.
That's a bit more defensible maybe, since rsc.io is not a known VCS host.
But for tests we really want to avoid the network entirely, so this CL
adds a special case in repoRootFromVCSPaths that returns a hard error
for plain "rsc.io" instead of doing the web fetch.

To keep us honest in the future, I added two automatically-set env
variables TESTGONETWORK=panic and TESTGOVCS=panic.
These cause the go command to panic rather than make a network request
or invoke a VCS command.

go test -short cmd/go now passes with these checks.

This reduced the time spent in go test -short cmd/go on my
Google workstation from 154s to 30s. (Yay network firewalls.)

Change-Id: I49207fca7f901fa011765fb984dc9cec8b691f11
Reviewed-on: https://go-review.googlesource.com/c/go/+/274441
Trust: Russ Cox <rsc@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-12-02 17:59:03 +00:00
Russ Cox 3d913a9266 os: add ReadFile, WriteFile, CreateTemp (was TempFile), MkdirTemp (was TempDir) from io/ioutil
io/ioutil was a poorly defined collection of helpers.
Proposal #40025 moved out the generic I/O helpers to io.
This CL for proposal #42026 moves the OS-specific helpers to os,
making the entire io/ioutil package deprecated.

For #42026.

Change-Id: I018bcb2115ef2ff1bc7ca36a9247eda429af21ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/266364
Trust: Russ Cox <rsc@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
2020-12-02 17:00:06 +00:00
Cuong Manh Le 10240b9d6b cmd/go: fix unbuffered channel passed to signal.Notify
Unbuffered channels passed into signal.Notify can be lost
as the docs for signal.Notify caution with:

    Package signal will not block sending to c: the caller must ensure
    that c has sufficient buffer space to keep up with the expected signal
    rate. For a channel used for notification of just one signal value,
    a buffer of size 1 is sufficient.

Found by a static analyzer from Orijtech, Inc. called "sigchanyzer", but
it'll be donated to the Go project soon.

Updates #9399.

Change-Id: Ia0690e447582da028694ed65ace7b97961997b84
Reviewed-on: https://go-review.googlesource.com/c/go/+/274332
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-02 16:43:58 +00:00
Russ Cox c32140fa94 all: update to use filepath.WalkDir instead of filepath.Walk
Now that filepath.WalkDir is available, it is more efficient
and should be used in place of filepath.Walk.
Update the tree to reflect best practices.

As usual, the code compiled with Go 1.4 during bootstrap is excluded.
(In this CL, that's only cmd/dist.)

For #42027.

Change-Id: Ib0f7b1e43e50b789052f9835a63ced701d8c411c
Reviewed-on: https://go-review.googlesource.com/c/go/+/267719
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-12-02 16:33:57 +00:00
Quey-Liang Kao 0433845ad1 cmd/asm, cmd/internal/obj/riscv: fix branch pseudo-instructions
Pseudo branch instructions BGT, BGTU, BLE, and BLEU implemented In
CL 226397 were translated inconsistently compared to other ones due
to the inversion of registers. For instance, while "BLT a, b" generates
"jump if a < b", "BLE a, b" generates "jump if b <= a."

This CL fixes the translation in the assembler and the tests.

Change-Id: Ia757be73e848734ca5b3a790e081f7c4f98c30f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/271911
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
Run-TryBot: Joel Sing <joel@sing.id.au>
2020-12-02 14:20:12 +00:00
Cherry Zhang cf7aa585ac cmd/link: invalidate kernel cache on darwin
Apparently, the darwin kernel may cache the code signature at
mmap. When we mmap the output buffer, it doesn't have a code
signature (as we haven't generated one). Invalidate the kernel
cache after writing the file.

See https://github.com/golang/go/issues/42684#issuecomment-731704900
for more information.

Updates #38485.
Fixes #42684.

Change-Id: Iac2ef756ca1454c856944423e5040b8e17a6b420
Reviewed-on: https://go-review.googlesource.com/c/go/+/272258
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2020-12-01 23:39:15 +00:00
Cherry Zhang 8cd35e00bd cmd/internal/buildid: update Mach-O code signature when rewriting buildid
As the code signature contains hashes of the entire file (except
the signature itself), rewriting buildid will invalidate the
signature. This CL makes it regenerate the signature when
rewriting the buildid. It only does it when the file already has
a code signature, with proper size (darwin/arm64 binaries
generated by the Go linker should have).

Updates #38485, #42684.

Change-Id: I082d9e5808b0ee6a35f9c362d7262aadd9113c81
Reviewed-on: https://go-review.googlesource.com/c/go/+/272257
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-01 23:37:58 +00:00
Cherry Zhang 6f84993e90 cmd/link: code-sign on darwin/arm64
This CL lets the linker code-sign output binaries on
darwin/arm64, as the kernel requires binaries must be signed in
order to run.

This signature will likely be invalidated when we stamp the
buildid after linking. We still do it in the linker, for
- plain "go tool link" works.
- the linker generates the LC_CODE_SIGNATURE load command with
  the right size and offset, so we don't need to update it when
  stamping the buildid.

Updates #38485, #42684.

Change-Id: Ia306328906d73217221ba31093fe61a935a46122
Reviewed-on: https://go-review.googlesource.com/c/go/+/272256
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-01 23:14:14 +00:00
Jason A. Donenfeld 4826abb6c2 cmd/compile: do not assume TST and TEQ set V on arm
These replacement rules assume that TST and TEQ set V. But TST and
TEQ do not set V. This is a problem because instructions like LT are
actually checking for N!=V. But with TST and TEQ not setting V, LT
doesn't do anything meaningful. It's possible to construct trivial
miscompilations from this, such as:

    package main

    var x = [4]int32{-0x7fffffff, 0x7fffffff, 2, 4}

    func main() {
        if x[0] > x[1] {
            panic("fail 1")
        }
        if x[2]&x[3] < 0 {
            panic("fail 2") // Fails here
        }
    }

That first comparison sets V, via the CMP that subtracts the values
causing the overflow. Then the second comparison operation thinks that
it uses the result of TST, when it actually uses the V from CMP.

Before this fix:

    TST             R0, R1
    BLT             loc_6C164

After this fix:

    TST             R0, R1
    BMI             loc_6C164

The BMI instruction checks the N flag, which TST sets.  This commit
fixes the issue by using [LG][TE]noov instead of vanilla [LG][TE], and
also adds a test case for the direct issue.

Fixes #42876.

Change-Id: I13c62c88d18574247ad002b671b38d2d0b0fc6fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/274026
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
2020-12-01 22:59:34 +00:00
Kevin Burke 283d65413d encoding/json: revert "add "json: " prefix to SyntaxError messages"
This reverts commit 6af088bfc6.

Reason for revert: Broke many tests inside Google which implies many
tests were broken outside of Google as well. The tests may be brittle
but still would require work to change and it's not clear it's worth
the benefit.

Updates #36221
Fixes #42675

Change-Id: Id3a14eb37e7119f5abe50e80dfbf120fdc44db72
Reviewed-on: https://go-review.googlesource.com/c/go/+/273747
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Trust: Joe Tsai <thebrokentoaster@gmail.com>
2020-12-01 22:51:45 +00:00
Cherry Zhang 7fca39aa05 cmd/internal/buildid: exclude Mach-O code signature in hash calculation
The code signature contains hashes of the entire file (except the
signature itself), including the buildid. Therefore, the buildid
cannot depend on the signature. Otherwise updating buildid will
invalidate the signature, and vice versa. As we cannot change the
code-signing algorithm, we can only change buildid calculation.

This CL changes the buildid calculation to exclude the Mach-O
code signature. So updating code signature after stamping the
buildid will not invalidate the buildid.

Updates #38485, #42684.

Change-Id: I8a9e2e25ca9dc00d9556d13b81652f43bbf6a084
Reviewed-on: https://go-review.googlesource.com/c/go/+/272255
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-01 21:42:10 +00:00
Cherry Zhang 7430266af4 cmd/internal/codesign: new package
On macOS/ARM64, the kernel requires that binaries must have a
valid code signature to run. The C toolchain code-signs the
binary at link time. We do the same.

It is more subtle for Go because we stamp the buildid after
linking. As the signature contains hashes of the entire file
(except the signature itself), we must (re)generate the signature
after stamping the buildid.

This CL adds a new codesign package, which provides
functionality to generate the code signature. It is a separate
internal package so it can be used both in the linker and by the
go command. The next CLs will add code-signing to the linker and
the go command.

Updates #38485, #42684.

Change-Id: Id46801a6665beebaab0eb413ff2e64c5b9467059
Reviewed-on: https://go-review.googlesource.com/c/go/+/272254
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-01 21:41:39 +00:00
Jay Conrod 20e251864b cmd: update golang.org/x/mod to v0.4.0
CL 269357 is the only difference between the pseudo-version we were
using and v0.4.0.

Change-Id: If15326bda51e04b47130429b818bfe2facaee03d
Reviewed-on: https://go-review.googlesource.com/c/go/+/274593
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-01 20:42:53 +00:00
Jay Conrod 933ce97bba cmd/go: don't print deprecation notice for 'go get exe'
It's difficult for module authors to provide installation instructions
that work in both Go 1.15 and 1.16. We'll wait until 1.17 to print a
deprecation warning for installing executables with 'go get'.

Fixes #42885

Change-Id: I835b447e83e760f48fd664e8a117749e0cb59f83
Reviewed-on: https://go-review.googlesource.com/c/go/+/274552
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-01 20:11:50 +00:00
Anmol Sethi 50b16f9de5 net/http: allow upgrading non keepalive connections
If one was using http.Transport with DisableKeepAlives and trying
to upgrade a connection against net/http's Server, the Server
would not allow a "Connection: Upgrade" header to be written
and instead override it to "Connection: Close" which would
break the handshake.

This change ensures net/http's Server does not override the
connection header for successful protocol switch responses.

Fixes #36381.

Change-Id: I882aad8539e6c87ff5f37c20e20b3a7fa1a30357
GitHub-Last-Rev: dc0de83201
GitHub-Pull-Request: golang/go#36382
Reviewed-on: https://go-review.googlesource.com/c/go/+/213277
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2020-12-01 19:47:12 +00:00
Michael Fraenkel 212d385a2f net/http: ignore connection closes once done with the connection
Once the connection is put back into the idle pool, the request should
not take any action if the connection is closed.

Fixes #41600

Change-Id: I5e4ddcdc03cd44f5197ecfbe324638604961de84
Reviewed-on: https://go-review.googlesource.com/c/go/+/257818
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Damien Neil <dneil@google.com>
2020-12-01 19:31:47 +00:00
Joel Sing f5978a0958 cmd/internal/obj/riscv: add tests for BGE/BGEU/BLT/BLTU
Add tests for BGE/BGEU/BLT/BLTU branch instructions. Also add pure Go variants
of these to ensure that the test data, Go and assembly all match up.

Change-Id: I84c68605e116a4e57f6c5c765bf0aaecab84b675
Reviewed-on: https://go-review.googlesource.com/c/go/+/271913
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Quey-Liang Kao <s101062801@m101.nthu.edu.tw>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-01 05:11:44 +00:00
Joel Sing a36ba090fd cmd/link/internal/amd64: always generate R_X86_64_PLT32 for SDYNIMPORT calls
Currently, in the non-DynlinkingGo case with external linking, we generate a
R_X86_64_GOTPCREL relocation for the imported symbol. This results in the
external linker turning this into a R_X86_64_GLOB_DAT relocation, rather
than a R_X86_64_JUMP_SLOT. Always generate R_X86_64_PLT32 for SDYNIMPORT
calls so that these calls work correctly.

Update #36435
Fixes #42671

Change-Id: I8a28884b7853cb4135053ed817bedc919482f4ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/270377
Trust: Joel Sing <joel@sing.id.au>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-01 05:09:44 +00:00
Cuong Manh Le 0ecf769633 cmd/compile: do not mark OpSP, OpSB pos for debugging
Fixes #42801

Change-Id: I2080ecacc109479f5820035401ce2b26d72e2ef2
Reviewed-on: https://go-review.googlesource.com/c/go/+/273506
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
2020-12-01 01:35:19 +00:00
Cherry Zhang 7f688d18c0 runtime: mlock signal stack on macOS/ARM64
Apparently, the macOS ARM64 kernel has a bug where when a signal
arrives and the signal stack is not currently faulted in, it may
kill the program with a SIGILL. Work around it by mlock the
signal stacks.

Fixes #42774.

Change-Id: I99a4b3fdb6d8af1c945725ddc2c25568d81c510a
Reviewed-on: https://go-review.googlesource.com/c/go/+/273686
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-11-30 22:14:36 +00:00