Commit Graph

1009 Commits

Author SHA1 Message Date
Russ Cox 059c3ed09f os/signal/internal/pty: use libc (not cgo) on macOS
This package is only used by tests anyway, but might as well
remove the cgo use on macOS so that it doesn't show up as
a cgo user, as part of our overall strategy to remove cgo use
in the standard library on macOS.

Change-Id: I5a1a39ed56373385f9d43a5e17098035dc1a451a
Reviewed-on: https://go-review.googlesource.com/c/go/+/449315
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-11-10 19:24:46 +00:00
Tobias Klauser 3fc8ed2543 internal/reflectlite: use unsafe.String in name.name and name.tag
Same as CL 448675 did in package reflect.

Change-Id: I26277d8dcf2d2e204724d6fa5cc6e1ad391633f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/448936
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-11-10 18:42:48 +00:00
Robert Findley 271f139f17 internal/types: fix the iota value in error code declarations
The new "InvalidSyntaxTree" node in the error code declaration
inadvertently incremented the value of iota by 1. Fix this by moving it
to its own declaration.

Change-Id: I34b33a8caddbbb9e41f431321ec0e5863dc15055
Reviewed-on: https://go-review.googlesource.com/c/go/+/449475
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
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2022-11-10 16:34:05 +00:00
Michael Matloob f5d21ffc81 cmd/go: decide whether to install .a based on number of CgoFiles
Instead of hardcoding the set of five packages that depend on cgo to
decide whether a package should have an install target, make the
decision based on whether the package has any CgoFiles. This means that
in nocgo configurations, there will be no installed packages, and that
if an GOOS/GOARCH combination doesn't have cgo files we don't
unnecessarily install a .a.

Because the determination of whether a file is a CgoFile is made later
in the Import functions, the choice of whether to add a PkgObj for teh
case there are CgoFiles is moved later. One concern here is that in some
cases, PkgObj may be set differently in the case of the FindOnly mode,
since the determination is moved across the boundary. We might want
to always set PkgObj after the FindOnly boundary for consistency? cmd/go
doesn't seem to use it when calling Import with FindOnly.

Also remove internal/buildinternal/needs_install.go because we will be
checking whether to install based on the number of cgo files and it
might be overkill to make the NeedsInstalledDotA function be the
equivalent of len(input) > 0.

For #47257

Change-Id: I5f7f2137dc99aaeb2e2695c14e0222093a6b2407
Reviewed-on: https://go-review.googlesource.com/c/go/+/448803
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
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2022-11-09 19:37:08 +00:00
Russ Cox 9ff2a6677f crypto/x509: allow BoringCrypto to use 4096-bit keys
FIPS-140 has been updated to allow 4096-bit RSA keys.
Allow them in certificate processing.

Fixes #41147.

Change-Id: I4c6bcb1b137a200dfe70cebc605ae57f49871184
Reviewed-on: https://go-review.googlesource.com/c/go/+/447655
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
2022-11-09 14:47:58 +00:00
cui fliter 821e31042a all: add missing copyright header
Change-Id: Ia5a090953d324f0f8aa9c1808c88125ad5eb6f98
Reviewed-on: https://go-review.googlesource.com/c/go/+/448955
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Reviewed-by: Bryan Mills <bcmills@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2022-11-09 14:05:53 +00:00
Daulet Zhanguzin 27c3814275 io: correctly process result of sendfile(2) when src returns 0 bytes
Fixes #53658. io.Copy() uses sendfile(2) to avoid allocating extra buffers when src is a file and dst is a TCPConn. However if src returns no bytes current logic treats it as failure and falls back to copying via user space. The following is a benchmark that illustrates the bug.

Benchmark: https://go.dev/play/p/zgZwpjUatSq

Before:
BenchmarkCopy-16          541006              2137 ns/op            4077 B/op          0 allocs/op

After:
BenchmarkCopy-16          490383              2365 ns/op             174 B/op          8 allocs/op

Change-Id: I703376d53b20e080c6204a73c96867cce16b24cf
GitHub-Last-Rev: 3a50be4f16
GitHub-Pull-Request: golang/go#53659
Reviewed-on: https://go-review.googlesource.com/c/go/+/415834
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2022-11-09 03:01:33 +00:00
Matthew Horsnell fe4e59e78b runtime internal/cpu: rename "Zeus" "NeoverseV1".
Rename "Zeus" to "NeoverseV1" for the partnum 0xd40 to be
consistent with the documentation of MIDR_EL1 as described in
https://developer.arm.com/documentation/101427/0101/?lang=en

Change-Id: I2e3d5ec76b953a831cb4ab0438bc1c403648644b
Reviewed-on: https://go-review.googlesource.com/c/go/+/414775
Reviewed-by: Jonathan Swinney <jswinney@amazon.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Eric Fang <eric.fang@arm.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2022-11-08 23:11:32 +00:00
Russ Cox 6939659a08 net: unify CNAME handling across ports
Unix and Windows differ in how they handle LookupCNAME(name).

If name exists in DNS with an A or AAAA record but no CNAME,
then on all operating systems and in the pure Go resolver,
LookupCNAME returns the name associated with the A/AAAA record
(the original name).

TestLookupCNAME has been testing this, because www.google.com
has no CNAME. I think it did at one point, but not anymore, and the
tests are still passing. Also added google.com as a test, since
top-level domains are disallowed from having CNAMEs.

If name exists in DNS with a CNAME record pointing to a record that
does not exist or that has no A or AAAA record,
then Windows has always reported the CNAME value,
but Unix-based systems and the pure Go resolver have reported
a failure instead. cname-to-txt.go4.org is an test record that is
a CNAME to a non-A/AAAA target (the target only has a TXT record).

This CL changes the Unix-based systems and the pure Go resolver
to match the Windows behavior, allowing LookupCNAME to succeed
whenever a CNAME exists.

TestLookupCNAME nows tests the new behavior by looking up
cname-to-txt.go4.org (run by bradfitz).

Fixes #50101.

Change-Id: Ieff5026c8535760e6313c7a41ebd5ff24de6d9be
Reviewed-on: https://go-review.googlesource.com/c/go/+/446179
Run-TryBot: Russ Cox <rsc@golang.org>
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2022-11-08 14:54:25 +00:00
Tobias Klauser be3184c405 internal/coverage/slicereader: use unsafe.String
Change-Id: Ifd88315626e0ce5b9b8d3c66aa9dd9806f8407dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/448555
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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2022-11-08 14:15:17 +00:00
Archana R 92c7df116e internal/bytealg: add PCALIGN to indexbodyp9 function on ppc64x
Adding PCALIGN in indexbodyp9 function shows
improvements in some SimonWaldherr benchmarks and one of the index
benchmarks on both Power9 and Power10

name              old time/op  new time/op  delta
Contains          19.8ns ± 0%  15.6ns ± 0%  -21.24%
ContainsNot       21.3ns ± 0%  18.9ns ± 0%  -11.03%
ContainsBytes     19.1ns ± 0%  16.0ns ± 0%  -16.54%
Index/10     17.3ns ± 0%    16.1ns ± 0%  -7.30%
Index/32     59.6ns ± 0%    59.6ns ± 0%  +0.12%
Index/4K     3.68µs ± 0%    3.68µs ± 0%    ~
Index/4M     3.74ms ± 0%    3.74ms ± 0%  -0.00%
Index/64M    59.8ms ± 0%    59.8ms ± 0%    ~

Change-Id: I784e57e0b0f5bac143f57f3a32845219e43d47fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/447595
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2022-11-07 19:27:43 +00:00
Dan Kortschak 1c05968c9a all: fix comment typos
Change-Id: Ic16824482142d4de4d0b949459e36505ee944ff7
Reviewed-on: https://go-review.googlesource.com/c/go/+/448175
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-11-05 21:02:45 +00:00
Bryan C. Mills 082afccebf internal/testenv: adjust timeout calculations in CommandContext
I noticed some test failures in the build dashboard after CL 445597
that made me realize the grace period should be based on the test
timeout, not the Context timeout: if the test itself sets a short
timeout for a command, we still want to give the test process enough
time to consume and log its output.

I also put some more thought into how one might debug a test hang, and
realized that in that case we don't want to set a WaitDelay at all:
instead, we want to leave the processes in their stuck state so that
they can be investigated with tools like `ps` and 'lsof'.

Updates #50436.

Change-Id: I65421084f44eeaaaec5dd2741cd836e9e68dd380
Reviewed-on: https://go-review.googlesource.com/c/go/+/446875
Auto-Submit: Bryan Mills <bcmills@google.com>
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2022-11-01 21:32:24 +00:00
Than McIntosh 2730170f63 cmd/{go,cover}: fix for -coverprofile path capture with local pkg
When coverage testing a local package (defined by a relative import
path such as "./foo/bar") the convention when "-coverprofile" is used
has been to capture source files by full pathname, as opposed to
recording the full import path or the invented import path
("command-line-arguments/") created by the go command in the case of
building named Go files. Doing this makes it much easier to use
collected profiles with "go tool -cover -html=<profile>".

The support for this feature/convention wound up being inadvertantly
dropped during the GOEXPERIMENT=coverageredesign implementation; this
patch restores it.

Fixes #56433.

Change-Id: Ib9556fdc86011b00c155caa614ab23e5148f3eb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/445917
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
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2022-11-01 14:11:54 +00:00
Russ Cox a3559f3301 net: use libc (not cgo) for DNS on macOS
Change the macOS implementation to use libc calls.
Using libc calls directly is what we do for all the runtime and os syscalls.
Doing so here as well improves consistency and also makes it possible
to cross-compile (from non-Mac systems) macOS binaries that use the
native name resolver.

Fixes #12524.

Change-Id: I011f4fcc5c50fbb5396e494889765dcbb9342336
Reviewed-on: https://go-review.googlesource.com/c/go/+/446178
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-11-01 14:05:39 +00:00
Bryan C. Mills 661e931dd1 internal/testenv: move helpers related to os/exec to a separate file
(Suggested by Austin in CL 445596.)

Change-Id: Ic774d551e8085d15435ef2b3c78d0169a365ce41
Reviewed-on: https://go-review.googlesource.com/c/go/+/446642
Auto-Submit: Bryan Mills <bcmills@google.com>
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2022-11-01 13:37:40 +00:00
Bryan C. Mills e8ec68edfa internal/testenv: remove RunWithTimout
For most tests, the test's deadline itself is more appropriate than an
arbitrary timeout layered atop of it (especially once #48157 is
implemented), and testenv.Command already adds cleaner timeout
behavior when a command would run too close to the test's deadline.

That makes RunWithTimeout something of an attractive nuisance. For
now, migrate the two existing uses of it to testenv.CommandContext,
with a shorter timeout implemented using context.WithTimeout.

As a followup, we may want to drop the extra timeouts from these
invocations entirely.

Updates #50436.
Updates #37405.

Change-Id: I16840fd36c0137b6da87ec54012b3e44661f0d08
Reviewed-on: https://go-review.googlesource.com/c/go/+/445597
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-10-31 20:54:10 +00:00
Bryan C. Mills 84cd7ab3c3 internal/testenv: add CommandContext and Command
This adds a testenv.CommandContext function, with timeout behavior
based on the existing logic in cmd/go.TestScript: namely, the command
is terminated with SIGQUIT (if supported) with an arbitrary grace
period remaining until the test's deadline.

If the test environment does not support executing subprocesses,
CommandContext skips the test.

If the command is terminated due to the timout expiring or the test
fails to wait for the command after starting it, CommandContext marks
the test as failing.

For tests where a shorter timeout is desired (such as for fail-fast
behavior), one may be supplied using context.WithTimeout.

The more concise Command helper is like CommandContext but without
the need to supply an explicit Context.

Updates #50436.

Change-Id: Ifd81fb86c402f034063c9e9c03045b4106eab81a
Reviewed-on: https://go-review.googlesource.com/c/go/+/445596
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2022-10-31 20:53:50 +00:00
Archana R 6774ddfec7 internal/bytealg: fix bug in index function for ppc64le/power9
The index function was not handling certain corner cases where there
were two more bytes to be examined in the tail end of the string to
complete the comparison. Fix code to ensure that when the string has
to be shifted two more times the correct bytes are examined.
Also hoisted vsplat to V10 so that all paths use the correct value.
Some comments had incorrect register names and corrected the same.
Added the strings that were failing to strings test for verification.

Fixes #56457

Change-Id: Idba7cbc802e3d73c8f4fe89309871cc8447792f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/446135
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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2022-10-31 12:52:07 +00:00
Michael Matloob b726b0cadb cmd/go: don't install most GOROOT .a files in pkg
Packages in GOROOT that don't use cgo will not be installed in
GOROOT/pkg, and will instead be cached as usual like other Go
packages.

- add a internal/buildinternal package to hold the identities of the
  five packages that use cgo
- update dist's test code to do a go build std cmd before checking
  staleness on builders. Because most of those packages no longer have
  install locations, and have dependencies that don't either, the
  packages need to be cached to not be stale.
- fix index_test to import packages with the path "." when preparing
  the "want" values to compare the indexed data to. (the module index
  matches the behavior of build.ImportDir, which always passes in "."
  as the path.
- In both the index and go/build Importers, don't set
  PkgObj for GOROOT packages which will no longer have install
  targets. PkgTargetRoot will still be set to compute target paths,
  which will still be needed in buildmode=shared.
- "downgrade" all install actions that don't have a target to build
  actions. (The target should already not be set for packages that
  shouldn't be installed).

For #47257

Change-Id: Ia5aee6b3b20b58e028119cf0352a4c4a2f10f6b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/432535
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2022-10-28 23:35:08 +00:00
Raj Barik 99862cd57d cmd/compile: Enables PGO in Go and performs profile-guided inlining
For #55022

Change-Id: I51f1ba166d5a66dcaf4b280756be4a6bf9545c5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/429863
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2022-10-28 14:23:26 +00:00
Robert Griesemer 51af904456 go/types, types2: use correct shift value when typechecking constant shift
Fixes #56425.

Change-Id: Ieae3fdb5326d4b6f6ec1cdcd579051559e34b35b
Reviewed-on: https://go-review.googlesource.com/c/go/+/445515
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2022-10-26 14:34:44 +00:00
Wayne Zuo 5d59fa143a all: delete riscv64 non-register ABI fallback path
Change-Id: I9e997b59ffb868575b780b9660df1f5ac322b79a
Reviewed-on: https://go-review.googlesource.com/c/go/+/443556
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2022-10-26 00:52:05 +00:00
Robert Griesemer 5a3900b23c go/types, types2: implement alternative comparable semantics
This is an experiment to see the impact of a potential spec change:
As an exception to the rule that constraint satisfaction is the same
as interface implementation, if the flag Config.AltComparableSemantics
is set, an ordinary (non-type parameter) interface satisfies the
comparable constraint. (In go/types, the flag is not exported to
avoid changing the API.)

Disabled by default. Test files can set the flag by adding

// -altComparableSemantics

as the first line in the file.

For #52509.

Change-Id: Ib491b086feb5563920eaddefcebdacb2c5b72d61
Reviewed-on: https://go-review.googlesource.com/c/go/+/444635
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2022-10-24 16:41:29 +00:00
Wayne Zuo 7e72d384d6 internal/abi, internal/buildcfg: always enable register ABI on riscv64
In Go 1.19, we develop register ABI for riscv64, enabled by default as a
GOEXPERIMENT. We can turn it on all the time in Go 1.20.

Change-Id: Ie8e2ac8b8bd3ebddb0dc6d58a5599547fb440e03
Reviewed-on: https://go-review.googlesource.com/c/go/+/443555
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2022-10-24 03:45:54 +00:00
Michael Matloob 7ea0520234 go,cmd,internal: update to anticipate missing targets and .a files
go/build and cmd/go will stop returing Targets for stdlib .a files, and
stop producing the .a files is pkg/GOOS_GOARCH. update tests to
anticipate that and to pass in importcfgs instead of expecting the
compiler can find .a files in their old locations.

Adds code to determine locations of .a files to internal/goroot. Also
adds internal/goroot to dist's bootstrap directories and changes
internal/goroot to build with a bootstrap version of Go.

Change-Id: Ie81e51105bddb3f0e374cbf47e81c23edfb67fa5
Reviewed-on: https://go-review.googlesource.com/c/go/+/442303
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2022-10-18 20:41:45 +00:00
Russ Cox 8dc08394f0 internal/godebug: remove dependency on os
The immediate reason is that we want to use godebug from math/rand,
and math/rand importing godebug importing os causes an import cycle
in package testing.

More generally, the new approach to backward compatibility outlined
in discussion #55090 will require using this package from other similarly
sensitive places, perhaps even package os itself. Best to remove all
dependencies.

Preparation for #54880.

Change-Id: Ia01657a2d90e707a8121a336c9db3b7247c0198f
Reviewed-on: https://go-review.googlesource.com/c/go/+/439418
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2022-10-18 14:49:44 +00:00
Russ Cox b65e259e56 internal/fuzz: write shorter testdata corpus file names
The only purpose of using the SHA256 in the file name is
collision avoidance. Using just the first 64 bits (16 hex digits)
will be more than enough, unless people start storing billions
of test cases in their corpora.

The shorter names are nicer for just about everything:
command lines, repository listings, and so on.

Change-Id: I67c760023bed85ba3ffd4f8058f86ef778322ba7
Reviewed-on: https://go-review.googlesource.com/c/go/+/443335
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
2022-10-17 18:38:43 +00:00
Austin Clements 03272d14ed runtime: run TestCgoSigfwd on all Unix platforms
This test was originally Linux-only, but there doesn't seem to be
anything Linux-specific in it.

Change-Id: I0f8519eff5dbed97f5e21e1c8e5ab0d747d51df3
Reviewed-on: https://go-review.googlesource.com/c/go/+/443073
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
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2022-10-17 15:15:36 +00:00
Dmitri Goutnik e56c93f07b cmd/go: enable -msan on freebsd/amd64
Enable -msan flag on freebsd/amd64 and amend PIE comment in
internal/work/init.go to indicate that MSAN requires PIE on all platforms
except linux/amd64.

R=go1.20

For #53298

Change-Id: I93d94efa95d7f292c23c433fb1d3f4301d820bde
Reviewed-on: https://go-review.googlesource.com/c/go/+/411275
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-10-14 12:48:27 +00:00
Robert Griesemer 79d0d330a9 go/types, types2: better error if there's a field with the name of a missing method
Fixes #51025.

Change-Id: I469a705e7da059e7ac0b12b05beb9ed5d3617396
Reviewed-on: https://go-review.googlesource.com/c/go/+/438856
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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2022-10-12 23:03:51 +00:00
Michael Anthony Knyszek e0d01b8467 arena: add experimental arena package
This change adds the arenas package and a function to reflect for
allocating from an arena via reflection, but all the new API is placed
behind a GOEXPERIMENT.

For #51317.

Change-Id: I026d46294e26ab386d74625108c19a0024fbcedc
Reviewed-on: https://go-review.googlesource.com/c/go/+/423361
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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2022-10-12 20:23:36 +00:00
Cuong Manh Le 4bcf94b023 all: prevent fakePC overflow on 386 in libfuzzer mode
fakePC uses hash.Sum32, which returns an uint32. However, libfuzzer
trace/hook functions declare fakePC argument as int, causing overflow on
386 archs.

Fixing this by changing fakePC argument to uint to prevent the overflow.

Fixes #56141

Change-Id: I3994c461319983ab70065f90bf61539a363e0a2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/441996
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
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TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-10-12 00:12:53 +00:00
Than McIntosh 1b316e3571 internal/coverage: minor code cleanups
Delete some unused code, various cleanups to fix staticcheck warnings.

Change-Id: Ie475d57735a83351a4977f0dd4bc1387ce06a20e
Reviewed-on: https://go-review.googlesource.com/c/go/+/441935
Reviewed-by: David Chase <drchase@google.com>
2022-10-11 12:40:42 +00:00
Robert Griesemer 578523e4a0 internal/types/errors: add InvalidSyntaxTree error
Type checkers should use InvalidSyntaxTree as error code
for invalid syntax tree errors instead of zero. This way
the zero value can be used to mark an unset error code.

Also, add an example for BlankPkgName (and adjust the
test harness slightly to make it work).

Change-Id: Ic15fa0e8e46be698e52352f2f0e4915b75e509d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/439565
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-10-10 16:02:27 +00:00
Robert Griesemer 470d146276 internal/types/errors: rename UntypedNil to UntypedNilUse
This avoids a conflict when dot-importing this package in
go/types and types2.

Change-Id: Ia6fc45ef21c28ea595b49f5321b5c0d441763e2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/439562
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-10-10 15:21:11 +00:00
Robert Griesemer 49372957ab internal/types/errors: export error codes
Adjust self-test accordingly.

Change-Id: I69987a306760da9eaf832275af0e9a8b6131a349
Reviewed-on: https://go-review.googlesource.com/c/go/+/439561
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
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2022-10-10 15:21:10 +00:00
Robert Griesemer b440c15db7 internal/types/errors: add package
The internal/types/errors package defines all error codes used by
the type checkers. This is the 1st step of several that factor out
the error codes from go/types and types2; the package is not yet
used.

- The file codes.go is a copy of go/types/errorcodes.go. The
  only change is the updated package name (types -> errors).

- The file codes_test.go is a copy of go/types/errorcodes_test.go
  with updated package name (types_test -> errors_test) and minor
  changes to walkCodes so that it doesn't require the pkgFiles
  helper function (the test only parses a single file).

Change-Id: Idb977b1220737b56b330de1d977f698f022daafc
Reviewed-on: https://go-review.googlesource.com/c/go/+/439560
Run-TryBot: Robert Griesemer <gri@google.com>
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2022-10-10 15:20:17 +00:00
Robert Griesemer 665992b515 go/types, types2: better error for generic type decl. with missing constraint
If a generic type declaration is missing a constraint, syntactically
it is an array type declaration with an undefined array length.
Mention the possibility of a missing constraint in the error message
for the undefined array length.

For #56064.
For #55961.
For #51145.

Change-Id: Ic161aeda9ea44faa8aa3bf3e9d62b3b13a95d4c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/439559
Run-TryBot: Robert Griesemer <gri@google.com>
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2022-10-10 15:17:24 +00:00
Ian Lance Taylor 4fe1971b2d os: use poll.fdMutex for Plan 9 files
This permits us to safely support concurrent access to files on Plan 9.
Concurrent access was already safe on other systems.

This does introduce a change: if one goroutine calls a blocking read
on a pipe, and another goroutine closes the pipe, then before this CL
the close would occur. Now the close will be delayed until the blocking
read completes.

Also add tests that concurrent I/O and Close on a pipe are OK.

For #50436
For #56043

Change-Id: I969c869ea3b8c5c2f2ef319e441a56a3c64e7bf5
Reviewed-on: https://go-review.googlesource.com/c/go/+/438347
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David du Colombier <0intro@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Rob Pike <r@golang.org>
2022-10-08 03:57:40 +00:00
Tobias Klauser 5ca0cd3f18 internal/poll, internal/syscall/unix, syscall: move writev definition for solaris
Move the writev definition for solaris from package
internal/syscall/unix to package syscall. This corresponds to where
writev is defined on aix, darwin and openbsd as well and is
go:linkname'ed from internal/poll. This also allows updating the
generated wrappers more easily if needed.

Change-Id: I671ed8232d25319f8e63f549f786d77a17602148
Reviewed-on: https://go-review.googlesource.com/c/go/+/436597
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2022-10-07 16:48:38 +00:00
Tobias Klauser cabf9fe4f2 internal/poll, net, syscall: enable writev on aix
aix supports iovec read/write, see
https://www.ibm.com/docs/en/aix/7.2?topic=w-write-writex-write64x-writev-writevx-ewrite-ewritev-pwrite-pwritev-subroutine

Define an unexported writev wrapper in package syscall (like on openbsd
and darwin) and linkname it from internal/poll.

Change-Id: I8f9695ceac72ae861afa3692207c154d86d4e690
Reviewed-on: https://go-review.googlesource.com/c/go/+/435260
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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2022-10-07 16:48:35 +00:00
Robert Griesemer 97d38f3002 go/types, types2: use consistent error messages for invalid struct literals
Fixes #51879.

Change-Id: Ic7ac892b82a0fe4ad6f95ff8ae84e6d30c52c111
Reviewed-on: https://go-review.googlesource.com/c/go/+/438855
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-10-05 16:52:44 +00:00
Than McIntosh 8bd803fd4e cmd/internal/sys: migrate support.go functions to new internal pkg
Separate out the functions from cmd/internal/sys/support.go and
migrate them to a new package internal/platform, so that functions such as
"RaceDetectorSupported" can be called from tests in std as well as in
cmd. This isn't a complete move of everything in cmd/internal/sys;
there are still many functions left.

The original version of this CL (patch set 1) called the new package
"internal/sys", but for packages that needed both "internal/sys" and
"cmd/internal/sys" the import of the former had to be done with a
different name, which was confusing and also required a hack in
cmd/dist.

Updates #56006.

Change-Id: I866d62e75adbf3a640a06e2c7386a6e9e2a18d91
Reviewed-on: https://go-review.googlesource.com/c/go/+/438475
Reviewed-by: Bryan Mills <bcmills@google.com>
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2022-10-04 18:08:15 +00:00
Cuong Manh Le aeedb5ab13 internal/singleflight: avoid race between multiple Do calls
When the first call to Do finished, it calls c.wg.Done() to signal
others that the call was done. However, that happens without holding
a lock, so if others call to Do complete and be followed by a call to
ForgotUnshared, that then returns false.

Fixing this by moving c.wg.Done() inside the section guarded by g.mu, so
the two operations won't be interrupted.

Thanks bcmills@ for finding and suggesting fix.

Change-Id: I850f5eb3f9751a0aaa65624d4109aeeb59dee42c
Reviewed-on: https://go-review.googlesource.com/c/go/+/436437
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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2022-09-30 20:49:56 +00:00
Cuong Manh Le 826efd7f25 internal/singleflight: fix duplicate deleting key when ForgetUnshared called
A key may be forgotten while the call is still in flight. So when the
call finished, it should only delete the key if that key is associated
with the call. Otherwise, we may remove the wrong newly created call.

Fixes #55343

Change-Id: I4fa72d79cad006e5884e42d885d193641ef84e0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/433315
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2022-09-30 20:05:46 +00:00
cui fliter 73e14a3026 internal: fix a few function names on comments
Change-Id: I53169e386b8c789b092de348fa891fe50e11c2ef
GitHub-Last-Rev: 75232393b4
GitHub-Pull-Request: golang/go#55965
Reviewed-on: https://go-review.googlesource.com/c/go/+/436883
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2022-09-30 16:39:12 +00:00
Than McIntosh 9910f8a403 internal/buildcfg: enabled CoverageRedesign GOEXPERIMENT by default
Turn on the CoverageRedesign GOEXPERIMENT by default.

Updates #51430.

Change-Id: Id15c67ef0b6ac421b188d163fd2ce4a302abb3c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/436236
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2022-09-30 13:50:45 +00:00
cuiweixie dc53738f58 internal/profile: omit comparison tool bool constant
Change-Id: I59b3e72382433a6dd82306f026171f3af4a6cba7
Reviewed-on: https://go-review.googlesource.com/c/go/+/436717
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2022-09-30 01:34:14 +00:00
cuiweixie 1b5110268b internal: use io.SeekStart, io.SeekCurrent, and io.SeekEnd
Change-Id: I23ab738b73bc33d3b0b10013c3fadd95b5b24681
Reviewed-on: https://go-review.googlesource.com/c/go/+/436719
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2022-09-29 23:45:29 +00:00