Keiichi Hirobe [Sun, 22 Oct 2023 08:30:37 +0000 (17:30 +0900)]
net/http: remove outdated comment about a support of CONNECT method
The net/http.Transport already supports CONNECT after
https://go-review.googlesource.com/c/go/+/123156 was merged, which
deleted comments in transport.go.
Change-Id: I784fdb9b044bc8a4a29bf252328c80a11aaf6901
Reviewed-on: https://go-review.googlesource.com/c/go/+/536057
Auto-Submit: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Damien Neil <dneil@google.com>
crypto/internal/boring: use noescape and nocallback cgo directives
The new noescape and nocallback directives can be used instead of the C
wrapper functions that are there just to avoid some parameters being
escaped to the heap.
This CL also helps demonstrate the use of the new directives in real
code.
I've added some benchmarks to demonstrate that this CL doesn't
introduce new heap allocations when using boringcrypto:
Andy Pan [Thu, 19 Oct 2023 10:50:21 +0000 (18:50 +0800)]
net,internal/poll: mark it as handled even if sendfile(2) succeeded with 0 bytes sent
CL 415834 fixed #53658 and somehow it only fixed it on Linux,
sendfile can also succeed with 0 bytes sent on other platforms
according to their manuals, this CL will finish the work that
CL 415834 left out on other platforms.
goos: darwin
goarch: arm64
pkg: net
│ old │ new │
│ sec/op │ sec/op vs base │
SendfileZeroBytes-10 7.563µ ± 5% 7.184µ ± 6% -5.01% (p=0.009 n=10)
│ old │ new │
│ B/op │ B/op vs base │
SendfileZeroBytes-10 3562.5 ± 7% 590.0 ± 2% -83.44% (p=0.000 n=10)
│ old │ new │
│ allocs/op │ allocs/op vs base │
SendfileZeroBytes-10 0.00 ± 0% 11.00 ± 0% ? (p=0.000 n=10)
Cuong Manh Le [Mon, 23 Oct 2023 03:22:17 +0000 (10:22 +0700)]
runtime: allow for 10 more threads in TestWindowsStackMemory*
CL 473415 allowed 5 more threads in TestWindowsStackMemory, to cover
sysmon and any new threads in future. However, during go1.22 dev cycle,
the test becomes flaky again, failing in windows-386 builder a couple of
times in CL 535975 and CL 536175 (and maybe others that haven't caught).
This CL increases the extra threads from 5 to 10, hopefully to make the
test stable again for windows-386. The theory is that Go process load a
bunch of DLLs, which may start their own threads. We could investigate
more deeply if the test still be flaky with 10 extra threads.
Fixes #58570
Change-Id: I255d0d31ed554859a5046fa76dfae1ba89a89aa3
Reviewed-on: https://go-review.googlesource.com/c/go/+/536058 Reviewed-by: Benny Siegert <bsiegert@gmail.com> Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Michael Pratt <mpratt@google.com>
Andy Pan [Wed, 23 Aug 2023 15:31:08 +0000 (23:31 +0800)]
runtime: ignore ETIMEDOUT for kevent conservatively
Fixes #59679
Change-Id: I1334b793825a2a57d239e3c98373bf4c93cc622a
Reviewed-on: https://go-review.googlesource.com/c/go/+/522215 Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
Run-TryBot: Andy Pan <panjf2000@gmail.com> Reviewed-by: Michael Pratt <mpratt@google.com>
favonia [Thu, 25 May 2023 01:43:15 +0000 (21:43 -0400)]
bufio: allow terminating Scanner early cleanly without a final token or an error
Fixes #56381
Change-Id: I95cd603831a7032d764ab312869fe9fb05848a4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/498117
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Roland Shoemaker [Fri, 20 Oct 2023 13:41:39 +0000 (09:41 -0400)]
doc: add missing space in godebug.md
Change-Id: I941b6397e2f09a4abb30c0caf91cc2ff2212a445
Reviewed-on: https://go-review.googlesource.com/c/go/+/536675
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Roland Shoemaker [Wed, 18 Oct 2023 15:25:08 +0000 (11:25 -0400)]
crypto/rand,runtime: switch RtlGenRandom for ProcessPrng
RtlGenRandom is a semi-undocumented API, also known as
SystemFunction036, which we use to generate random data on Windows.
It's definition, in cryptbase.dll, is an opaque wrapper for the
documented API ProcessPrng. Instead of using RtlGenRandom, switch to
using ProcessPrng, since the former is simply a wrapper for the latter,
there should be no practical change on the user side, other than a minor
change in the DLLs we load.
Change-Id: Ie6891bf97b1d47f5368cccbe92f374dba2c2672a
Reviewed-on: https://go-review.googlesource.com/c/go/+/536235
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Auto-Submit: Roland Shoemaker <roland@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
F Y [Tue, 17 Oct 2023 21:59:17 +0000 (21:59 +0000)]
syscall: stop counting trailing NUL for abstract addresses starting with NUL
Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.
For #63579.
Change-Id: I206e4d0d808396998cb7d92a9e26dda854cb1248
GitHub-Last-Rev: 0ff0a9c938a4b57cdc30b1c4f0c058108a241df8
GitHub-Pull-Request: golang/go#63580
Reviewed-on: https://go-review.googlesource.com/c/go/+/535776
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Ian Lance Taylor [Thu, 19 Oct 2023 23:45:00 +0000 (16:45 -0700)]
test: add tests that gofrontend failed
I will shortly be sending CLs to let the gofrontend code pass
these tests.
Change-Id: I53ccbdac3ac224a4fdc9577270f48136ca73a62c
Reviewed-on: https://go-review.googlesource.com/c/go/+/536537 Reviewed-by: Cherry Mui <cherryyz@google.com>
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>
cmd/compile: improve the implementation of Lowered{Move,Zero} on linux/loong64
Like the CL 487295, when implementing Lowered{Move,Zero}, 8 is first subtracted
from Rarg0 (parameter Ptr), and then the offset of 8 is added during subsequent
operations on Rarg0. This operation is meaningless, so delete it.
Change LoweredMove's Rarg0 register to R20, consistent with duffcopy.
Change-Id: Ia3f3c8b25e1e93c97ab72328651de78ca9dec016
Reviewed-on: https://go-review.googlesource.com/c/go/+/488515 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: xiaodong liu <teaofmoli@gmail.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Dmitri Shuralyov [Tue, 17 Oct 2023 19:39:54 +0000 (15:39 -0400)]
all: update vendored dependencies
One of the remaining uses of the old +build syntax was in the bundled
copy of golang.org/x/net/http2 in net/http. Pull in a newer version of
bundle with CL 536075 that drops said +build syntax line. Also pull in
newer x/sys and other golang.org/x modules where old +build lines were
recently dropped.
Generated with:
go install golang.org/x/build/cmd/updatestd@latest
go install golang.org/x/tools/cmd/bundle@latest
updatestd -goroot=$(pwd) -branch=master
For #36905.
For #41184.
For #60268.
Change-Id: Ia18d1ce9eadce85b38176058ad1fe38562b004e9
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/536575 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Dmitri Shuralyov [Tue, 17 Oct 2023 19:21:15 +0000 (15:21 -0400)]
misc: drop old +build lines
This is all there was outside of the src and test top-level directories.
Change-Id: Id29b1c92cab7087681f89504e861a47dc30ba834
Reviewed-on: https://go-review.googlesource.com/c/go/+/536238 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Dmitri Shuralyov [Tue, 17 Oct 2023 19:19:33 +0000 (15:19 -0400)]
all: drop old +build lines
Running 'go fix' on the cmd+std packages handled much of this change.
Also update code generators to use only the new go:build lines,
not the old +build ones.
For #41184.
For #60268.
Change-Id: If35532abe3012e7357b02c79d5992ff5ac37ca23
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/536237 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Dmitri Shuralyov [Tue, 17 Oct 2023 19:07:58 +0000 (15:07 -0400)]
test: migrate remaining files to go:build syntax
Most of the test cases in the test directory use the new go:build syntax
already. Convert the rest. In general, try to place the build constraint
line below the test directive comment in more places.
For #41184.
For #60268.
Change-Id: I11c41a0642a8a26dc2eda1406da908645bbc005b
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
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Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Austin Clements [Tue, 17 Oct 2023 19:05:32 +0000 (15:05 -0400)]
cmd/go: add Shell.RemoveAll
There are quite a few places that perform their own command logging
and then use os.RemoveAll. Unify (nearly) all of these into
(*Shell).RemoveAll, like many of the other internal implementations of
basic shell operations.
This CL separates running shell commands and doing shell-like
operations out of the Builder type and into their own, new Shell type.
Shell is responsible for tracking output streams and the Action that's
running commands. Shells form a tree somewhat like Context, where new
Shells can be derived from a root shell to adjust their state.
The primary intent is to support "go build -json", where we need to
flow the current package ID down to the lowest level of command output
printing. Shell gives us a way to easily flow that context down.
However, this also puts a clear boundary around how we run commands,
removing this from the rather large Builder abstraction.
Austin Clements [Thu, 19 Oct 2023 14:51:07 +0000 (10:51 -0400)]
cmd/go: serialize access to scriptDir with output
Currently, Builder.fmtcmd can read scriptDir without taking the output
lock. This introduces a potential data race between the read in fmtcmd
and the write in Showcmd. There's also a logical race here: because
fmtcmd doesn't know when its output is going to be printed, Showcmd
may print a "cd" command between when fmtcmd is called and when its
output is printed. As a result, it doesn't make sense to just lock
around the access in fmtcmd.
Instead, move the entire scriptDir substitution to Showcmd. This will
generally result in the same output. In the cases where Builder.run is
called with a non-empty desc, it means we may print a full path in the
comment line above output rather than substituting the script
directory. I think this is okay.
Austin Clements [Wed, 11 Oct 2023 16:15:57 +0000 (12:15 -0400)]
cmd/go: clean up adding import path to command error
Currently, cmdError makes a somewhat fuzzy attempt to ensure the
package import path is part of the printed error, using a string
prefix check. Also, if it decides it does need to add the import path,
it prints it as a "go build" line, which could be misleading because
it can happen outside of "go build".
Clean up the whole code path by explicitly checking the provided error
description against Package.Desc(), and instead of emitting "go build"
in the error message, print it as "# importPath" just like we do in
the common case.
cui fliter [Fri, 13 Oct 2023 17:24:33 +0000 (01:24 +0800)]
image: add available godoc link
Change-Id: I2839ecb091c4f0b30d0dcee708bf9e9a55e3672a
Reviewed-on: https://go-review.googlesource.com/c/go/+/535196
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
cui fliter [Fri, 13 Oct 2023 16:45:28 +0000 (00:45 +0800)]
go: add available godoc link
Change-Id: Ie2e8b56225292ef0a28a25f96b0a57cc198a13e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/535195 Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
cui fliter [Sat, 14 Oct 2023 13:09:16 +0000 (21:09 +0800)]
math: add available godoc link
Change-Id: I4a6c2ef6fd21355952ab7d8eaad883646a95d364
Reviewed-on: https://go-review.googlesource.com/c/go/+/535087 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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flaxinger [Mon, 16 Oct 2023 08:55:11 +0000 (08:55 +0000)]
internal/nettrace: fix comment typo
Change-Id: I23e2bc67476ed1cedf61db9953683e57ab6bf522
GitHub-Last-Rev: 458581ec261eae790fc54537fcecb0fd5915af1e
GitHub-Pull-Request: golang/go#63530
Reviewed-on: https://go-review.googlesource.com/c/go/+/535655 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Yohan Mok <yohan@ab180.co> Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Change-Id: Id3fc1df6d86b7c4cc383d09f9465fa8f4cc2a559
Reviewed-on: https://go-review.googlesource.com/c/go/+/536015 Reviewed-by: Bryan Mills <bcmills@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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go101 [Wed, 18 Oct 2023 17:17:18 +0000 (17:17 +0000)]
slices: avoid an unnecessary check in Replace
The current implementation of the builtin copy function will return early
when it is found that the addresses of the first elements of the two
slice arguments are identical, so it is unnecessarily to do this in user code.
See #57759 for details.
Change-Id: I7c101eee496923d7aa59f94720da6c84feb93af8
GitHub-Last-Rev: 4d6819fb25143f5ad3ff65eca7fe6094c37f2af2
GitHub-Pull-Request: golang/go#63617
Reviewed-on: https://go-review.googlesource.com/c/go/+/536255
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Keith Randall <khr@google.com>
Austin Clements [Wed, 18 Oct 2023 20:49:50 +0000 (16:49 -0400)]
cmd/go: work around race in fmtCmd
CL 529219 made an existing race with accessing Builder.scriptDir from
Builder.fmtcmd (and now also Builder.Showcmd) much more likely by
dropping a theoretically unnecessary condition from the call from
Builder.run to Builder.fmtcmd.
go install -race cmd/go
stress -p 1 go test -x -cover -a log
Return this race to its existing likelihood by putting the condition
back. This isn't a "correct" solution because the race could still
happen if the "cover" tool invoked by Builder.cover2 emits output. But
this will do for a temporary fix.
andig [Sat, 14 Oct 2023 09:32:20 +0000 (09:32 +0000)]
encoding/json: use reflect.Value.IsZero
IsZero does the same thing, using this rather than writing it again.
Follow-up to https://github.com/golang/go/pull/63519
Change-Id: I93768874052935dd7cb58804f22748091bcc3ef7
GitHub-Last-Rev: dfbc6ed635125535a73fe509716e0df31cc8f7b0
GitHub-Pull-Request: golang/go#63540
Reviewed-on: https://go-review.googlesource.com/c/go/+/535415
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Carlos Amedee <carlos@golang.org>
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cui fliter [Fri, 13 Oct 2023 05:07:28 +0000 (13:07 +0800)]
database: add available godoc link
Change-Id: I6150858f1186edc6cebd38ff166d57287fa430f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/535078 Reviewed-by: Carlos Amedee <carlos@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
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cui fliter [Fri, 13 Oct 2023 06:53:49 +0000 (14:53 +0800)]
embed: add available godoc link
Change-Id: Iefccc7aeb0f697c555ae8a6a6bb6cd5091882195
Reviewed-on: https://go-review.googlesource.com/c/go/+/535079 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Carlos Amedee <carlos@golang.org>
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cui fliter [Fri, 13 Oct 2023 07:20:55 +0000 (15:20 +0800)]
flag: add available godoc link
Change-Id: I00d49ded65801ab12322f711d1ac6131d69aea34
Reviewed-on: https://go-review.googlesource.com/c/go/+/535081 Reviewed-by: Carlos Amedee <carlos@golang.org>
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cui fliter [Sat, 14 Oct 2023 09:47:57 +0000 (17:47 +0800)]
io: add available godoc link
Change-Id: I5973a352edb73e02a274d939d6d0573788640dc9
Reviewed-on: https://go-review.googlesource.com/c/go/+/535435
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cui fliter [Fri, 13 Oct 2023 06:48:33 +0000 (14:48 +0800)]
debug: add available godoc link
Change-Id: I9e7b7e10d9e3d23e4ed540eb8137cd1f4d103711
Reviewed-on: https://go-review.googlesource.com/c/go/+/534761 Reviewed-by: Carlos Amedee <carlos@golang.org>
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Quan Tong [Wed, 11 Oct 2023 01:55:24 +0000 (01:55 +0000)]
cmd/go/internal/modcmd: do not copy test embed files when vendoring
Currently, go mod vendor copy all files matched by //go:embed,
even when it is in a _test.go file. According to the documentation,
it should not include test code for vendored packages.
Fixes #63473
Change-Id: I28c411724fc7b7aeb683857fc114e20b08635e01
Reviewed-on: https://go-review.googlesource.com/c/go/+/534376
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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cmd/compile: update to rules on PPC64 folding bit reversal to load
In the Power10 rule to fold bit reversal into load, the MOVWZreg or
MOVHZreg (Zeroing out the upper bits of a word or halfword) becomes
redundant since byte reverse (BR) load clears the upper bits. Hence
removing for Power10. Similarly for < Power10 cases in the rule used to
fold bit reversal into load (Bswap), the above redundant operation is removed.
Change-Id: Idb027e8b6e79b6acfb81d48a9a6cc06f8e9cd2db
Reviewed-on: https://go-review.googlesource.com/c/go/+/531377 Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Jayanth Krishnamurthy <jayanth.krishnamurthy@ibm.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Cuong Manh Le [Mon, 16 Oct 2023 16:07:49 +0000 (23:07 +0700)]
runtime: speed up readvarintUnsafe
The documentation of readvarintUnsafe claims itself and readvarint are
duplicated. However, two implementation are not in synced, since when
readvarint got some minor improvements in CL 43150.
Updating readvarintUnsafe to match readvarint implementation to gain a
bit of speed. While at it, also updating its documentation to clarify
the main difference.
name time/op
ReadvarintUnsafe/old-8 6.04ns ± 2%
ReadvarintUnsafe/new-8 5.31ns ± 3%
Change-Id: Ie1805d0747544f69de88f6ba9d1b3960f80f00e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/535815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Cuong Manh Le [Fri, 13 Oct 2023 03:32:57 +0000 (10:32 +0700)]
cmd/compile: fix funcdata encode for functions with large frame size
The funcdata is encoded as varint, with the upper limit set to 1e9.
However, the stack offsets could be up to 1<<30. Thus emitOpenDeferInfo
will trigger an ICE for function with large frame size.
By using binary.PutUvarint, the frame offset could be encoded correctly
for value larger than 1<<35, allow the compiler to report the error.
Further, the runtime also do validation when reading in the funcdata
value, so a bad offset won't likely cause mis-behavior.
Fixes #52697
Change-Id: I084c243c5d24c5d31cc22d5b439f0889e42b107c
Reviewed-on: https://go-review.googlesource.com/c/go/+/535077
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
cmd/compile: avoid ANDCCconst on PPC64 if condition not needed
In the PPC64 ISA, the instruction to do an 'and' operation
using an immediate constant is only available in the form that
also sets CR0 (i.e. clobbers the condition register.) This means
CR0 is being clobbered unnecessarily in many cases. That
affects some decisions made during some compiler passes
that check for it.
In those cases when the constant used by the ANDCC is a right
justified consecutive set of bits, a shift instruction can
be used which has the same effect if CR0 does not need to be
set. The rule to do that has been added to the late rules file
after other rules using ANDCCconst have been processed in the
main rules file.
Some codegen tests had to be updated since ANDCC is no
longer generated for some cases. A new test case was added to
verify the ANDCC is present if the results for both the AND
and CR0 are used.
Change-Id: I304f607c039a458e2d67d25351dd00aea72ba542
Reviewed-on: https://go-review.googlesource.com/c/go/+/531435
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Paul Murphy <murp@ibm.com>
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Austin Clements [Wed, 18 Oct 2023 14:48:50 +0000 (10:48 -0400)]
cmd/go: make pkg-config check less picky
CL 529219 tweaked the list_pkgconfig_error script test currently to
expect pkg-config to fail with "Package .* not found$", but on several
OSes (at least OpenBSD, AIX, and Solaris), pkg-config prints "Package
libnot-a-valid-cgo-library was not found in the pkg-config search
path". Fix the test on these OSes by dropping the "$" so the test
doesn't require the line to end with "not found".
Change-Id: I40c577521f34c360a1d62355596958f6f969eb54
Reviewed-on: https://go-review.googlesource.com/c/go/+/536195 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Austin Clements <austin@google.com>
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Austin Clements [Tue, 17 Oct 2023 16:39:32 +0000 (12:39 -0400)]
cmd/go: drop unnecessary Package argument to reportCmd
Now that we've dropped the redundant Package arguments to many
functions, we can see that the Package argument to reportCmd is always
nil. That means we can drop it and always use a.Package.
Austin Clements [Tue, 17 Oct 2023 16:32:52 +0000 (12:32 -0400)]
cmd/go: drop unnecessary Package arguments
There are several functions that take both an Action argument and a
Package argument. It takes a decent amount of work to determine that
in all cases the value of the Package argument is just Action.Package.
This makes these Package arguments both redundant and potentially
confusing because it makes these APIs look like they have more
flexibility than they actually do.
Austin Clements [Thu, 12 Oct 2023 14:54:40 +0000 (10:54 -0400)]
cmd/go: move fmtcmd's side effect to Showcmd
Currently, fmtcmd may have the side effect of updating
Builder.scriptDir, the logical working directory of the printed
script. If it does so, it also returns a two line command consisting
of both a "cd" into the new scriptDir and the original command.
When fmtcmd is used as part of Showcmd, that's fine, but fmtcmd is
also used in a handful of places to construct command descriptions
that are ultimately passed to Builder.reportCmd. In these cases, it's
surprising that fmtcmd has any side effects, but the bigger problem is
that reportCmd isn't expecting a two-line description and will print
it wrong in the output.
One option is to fix printing multi-line descriptions in reportCmd,
but we can fix the surprise side effect too by instead moving the
working directory update to Showcmd. With this CL, fmtcmd merely
consults the working directory to shorten it in the output and does
not update it.
However, there is a fair amount of variation between call sites. The
most common non-trivial variation is sites where errors are an
expected outcome. In this case, often we simply pass "nil" for the
error to trigger only the printing behavior of reportCmd.
cmd/go: consolidate showOutput, formatOutput, and processOutput into reportCmd
Many uses of showOutput, formatOutput, and processOutput follow a very
similar (somewhat complex) pattern. Places that diverge from this
pattern are often minor bugs. Furthermore, the roles of formatOutput
and processOutput have somewhat blurred over time; e.g., formatOutput
performs directory shortening, while processOutput performs cgo
demangling.
This CL consolidates all of this logic into a single, new function:
Builder.reportCmd.
In the following CL, we'll replace all calls of the three original
functions with reportCmd.
In addition to being a nice cleanup, this puts us in a much better
position to change how build output is formatted in order to support
`go build -json`.
bestgopher [Wed, 18 Oct 2023 00:13:21 +0000 (00:13 +0000)]
runtime: fix comments for itab
The function WriteTabs has been renamed WritePluginTable.
Change-Id: I5f04b99b91498c41121f898cb7774334a730d7b4
GitHub-Last-Rev: c98ab3f87210cef9146a1aec97e2f1f4a2bc0593
GitHub-Pull-Request: golang/go#63595
Reviewed-on: https://go-review.googlesource.com/c/go/+/535996 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
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qmuntal [Thu, 5 Oct 2023 10:35:35 +0000 (12:35 +0200)]
runtime: use cgo_import_dynamic for QueryPerformanceCounter
QueryPerformanceCounter is available since Windows 2000 [1], so there
is no need to conditionally load it.
Even if the Go runtime doesn't eventually use it, it is still simpler
and faster to just tell the Windows loader to load it, instead of doing
it ourselves.
Mauri de Souza Meneguzzo [Tue, 17 Oct 2023 18:36:31 +0000 (18:36 +0000)]
go/printer: fix invalid output for empty decls
The current output for empty declarations such as var, const, import
results in "var", "const", "import" respectively. These are not valid
and the parser will promptly reject them as invalid syntax.
This CL updates this behavior by adding "()" to the output of empty
decls so the syntax becomes valid, e.g "var ()" instead of "var".
Fixes #63566
Change-Id: I571b182d9ccf71b159360c8de003ad55d0ff3443
GitHub-Last-Rev: 2720419e364938e9962be71d0e6ed51375fec404
GitHub-Pull-Request: golang/go#63593
Reviewed-on: https://go-review.googlesource.com/c/go/+/535995 Reviewed-by: Robert Griesemer <gri@google.com> Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Cuong Manh Le [Tue, 17 Oct 2023 17:26:42 +0000 (00:26 +0700)]
cmd/internal/testdir: accept build go1.x build tag
While at it, also using "slices" package to simplify code.
For #63489
Change-Id: I72b325f6ad379b996c108145885fa71706f6659f
Reviewed-on: https://go-review.googlesource.com/c/go/+/536055 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Robert Griesemer [Mon, 16 Oct 2023 16:08:51 +0000 (09:08 -0700)]
spec: explain eval order of binary operator examples with comments
Fixes #63525.
Change-Id: Ie9aa4dd47c025cd593e576c6e8de1774e1d1e302
Reviewed-on: https://go-review.googlesource.com/c/go/+/535775 Reviewed-by: Robert Griesemer <gri@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
Roland Shoemaker [Thu, 5 Oct 2023 13:16:18 +0000 (06:16 -0700)]
html/template: track brace depth for each nested expression
We need to track the brace depth for each individual nested expression,
since a string interpolation expression may be nested inside of an
object.
e.g. `${ {1:`${}`}}` has brace depths [1, 0] when inside of the inner
${} expression. When we exit the inner expression, we need to reset to
the previous brace depth (1) so that we know that the following } closes
the object, but not the outer expression.
Note that if you write a broken expression (i.e. `${ { }`) escaping will
clearly not work as expected (or depending on your interpretation, since
it is broken, it will work as expected). Since the JS parser doesn't
catch syntax errors, it's up to the user to write a valid template.
Updates #61619
Change-Id: I4c33723d12aff49facdcb1134d9ca82b7a0dffc4
Reviewed-on: https://go-review.googlesource.com/c/go/+/532995 Reviewed-by: Damien Neil <dneil@google.com>
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cui fliter [Mon, 3 Jul 2023 05:41:45 +0000 (13:41 +0800)]
all: fix function names
Change-Id: Iba8878420c59d705066d1d9955e91a5c2eb4faf5
Reviewed-on: https://go-review.googlesource.com/c/go/+/507615 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Ian Lance Taylor [Fri, 13 Oct 2023 19:38:57 +0000 (12:38 -0700)]
bufio: link "too large to fit" to Scanner.Buffer
Change-Id: Id0a4f5716da98008eec10eee05b74fc2a155ba3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/535216 Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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Ian Lance Taylor [Fri, 13 Oct 2023 17:34:30 +0000 (10:34 -0700)]
runtime: use real type size in map keys and values functions
We were using the size stored in the map, which is the smaller
of the real type size and 128.
As of CL 61538 we don't use these functions, but we expect to
use them again in the future after #61626 is resolved.
Change-Id: I7bfb4af5f0e3a56361d4019a8ed7c1ec59ff31fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/535215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Keith Randall <khr@google.com>
cui fliter [Fri, 13 Oct 2023 03:28:53 +0000 (11:28 +0800)]
compress: some minor corrections or adjustments for godoc link
Change-Id: Ic1fc777b9a4e8262851e27646d53a0ec4fe55b64
Reviewed-on: https://go-review.googlesource.com/c/go/+/535076 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Joe Tsai [Thu, 22 Jul 2021 22:41:53 +0000 (15:41 -0700)]
strconv: add example for QuotedPrefix
Example can sometimes be more informative than additional prose.
Fixes #46829
Change-Id: Ia5a5b121ad0b891026e77420d5f7f1b2c4a407da
Reviewed-on: https://go-review.googlesource.com/c/go/+/336749
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cui fliter [Fri, 13 Oct 2023 07:04:09 +0000 (15:04 +0800)]
expvar: add available godoc link
Change-Id: I2db83e3c97a154f8599b4fcbceeebf1c69ee61ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/534762
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cui fliter [Fri, 13 Oct 2023 16:54:45 +0000 (00:54 +0800)]
hash: add available godoc link
Change-Id: Ieb43f28400e9ded3dc7e57f27f6d7514b14cc66d
Reviewed-on: https://go-review.googlesource.com/c/go/+/535083
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cui fliter [Fri, 13 Oct 2023 17:28:00 +0000 (01:28 +0800)]
index/suffixarray: add available godoc link
Change-Id: Ic6397348108f00fc88b59b259169bd98daceba3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/535085
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cui fliter [Thu, 12 Oct 2023 04:18:18 +0000 (12:18 +0800)]
archive: add available godoc link
Change-Id: I813aa09f8a65936796469fa637d0f23004d26098
Reviewed-on: https://go-review.googlesource.com/c/go/+/534757 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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cui fliter [Thu, 12 Oct 2023 03:49:26 +0000 (11:49 +0800)]
bytes,strings: add available godoc link
Change-Id: Id9706a783d3321e3706eeee102286522e7968efd
Reviewed-on: https://go-review.googlesource.com/c/go/+/534775 Reviewed-by: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
cui fliter [Thu, 12 Oct 2023 10:08:04 +0000 (18:08 +0800)]
crypto: add available godoc link
Change-Id: Ifc669399dde7d6229c6ccdbe29611ed1f8698fb1
Reviewed-on: https://go-review.googlesource.com/c/go/+/534778 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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Michael Pratt [Tue, 19 Sep 2023 21:04:06 +0000 (17:04 -0400)]
cmd/compile/internal/pgo: readability refactor
Construction of Profile is getting more complex. Currently, we construct
a partial Profile and then use methods to slowly complete the structure.
This can hide dependencies and make refactoring fragile as the
requirements and outputs of the methods is not clearly specified.
Refactor construction to build the Profile only once all of the parts
are complete. The intermediate states explicitly pass input and outputs
as arguments.
Additionally, rename Profile.NodeMap to NamedEdgeMap to make its
contents more clear (edges, specified by caller/callee name rather than
IR). Remove the node flat/cumulative weight from this map; they are
unused.
Change-Id: I2079cd991daac6398d74375b04dfe120b473d908
Reviewed-on: https://go-review.googlesource.com/c/go/+/529558
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
Michael Pratt [Mon, 15 May 2023 22:00:57 +0000 (18:00 -0400)]
cmd/compile: lookup indirect callees from export data for devirtualization
Today, the PGO IR graph only contains entries for ir.Func loaded into
the package. This can include functions from transitive dependencies,
but only if they happen to be referenced by something in the current
package. If they are not referenced, noder never bothers to load them.
This leads to a deficiency in PGO devirtualization: some callee methods
are available in transitive dependencies but do not devirtualize because
they happen to not get loaded from export data.
Resolve this by adding an explicit lookup from export data of callees
mentioned in the profile.
I have chosen to do this during loading of the profile for simplicity:
the PGO IR graph always contains all of the functions we might need.
That said, it isn't strictly necessary. PGO devirtualization could do
the lookup lazily if it decides it actually needs a method. This saves
work at the expense of a bit more complexity, but I've chosen the
simpler approach for now as I measured the cost of this as significantly
less than the rest of PGO loading.
For #61577.
Change-Id: Ieafb2a549510587027270ee6b4c3aefd149a901f
Reviewed-on: https://go-review.googlesource.com/c/go/+/497175
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
Joel Sing [Fri, 10 Sep 2021 16:03:10 +0000 (02:03 +1000)]
cmd/link/internal/ld: assign temporary addresses to per-package text
If trampolines may be required, the current text addressing second
pass resets all assigned addresses, before assigning addresses and
laying down trampolines in a linear fashion. However, this approach
means that intra-package calls are to a symbol that has not yet
been assigned an address, when the symbol is ahead of the current
function.
In the case of RISC-V the JAL instruction is limited to +/-1MiB.
As such, if a call is to a symbol with no address currently assigned,
we have to assume that a trampoline will be required. During the
relocation phase we can fix up and avoid trampolines in some cases,
however this results in unused trampolines that are still present
in the binary (since removing them would change text addresses).
In order to significantly reduce the number of unused trampolines,
assign temporary addresses to functions within the same package,
based on the maximum number of trampolines that may be required by
a function. This allows for better decisions to be made regarding
the requirement for intra-package trampolines, as we reset the
addressing for a function, assign its final address and lay down
any resulting trampolines.
This results in ~2,300 unused trampolines being removed from the
Go binary and ~5,600 unused trampolines being removed from the
compile binary, on linux/riscv64.
This reapplies CL 349650, however does not pass big to assignAddress
when assigning temporary addresses, as this can result in side
effects such as section splitting.
Change-Id: Id7febdb65d962d6b1297a91294a8dc27c94d8696
Reviewed-on: https://go-review.googlesource.com/c/go/+/534760 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
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apocelipes [Thu, 12 Oct 2023 15:55:54 +0000 (15:55 +0000)]
encoding/xml: use reflect.Value.IsZero
IsZero does the same thing, using this rather than writing it again.
Change-Id: I62810ac2d1a6e189feac03b022c8931fb6993e19
GitHub-Last-Rev: 1d5fd10d96baf75e8b170a2c71949ff3d0884c46
GitHub-Pull-Request: golang/go#63519
Reviewed-on: https://go-review.googlesource.com/c/go/+/534935
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Cherry Mui [Fri, 29 Sep 2023 18:00:04 +0000 (14:00 -0400)]
runtime: don't print "unexpected SPWRITE" when printing traceback
The system stack often starts with a stack transition function
like "systemstack" or "mcall", which is marked as SPWRITE. When
unwinding a system stack for printing, we want the traceback stop
at the stack switching frame, but not print the "unexpected
SPWRITE" message.
Previously before CL 525835, we don't print the "unexpected
SPWRITE" message if unwindPrintErrors is set, i.e. printing a
stack trace. This CL restores this behavior.
Another possibility is not printing the message only on the system
stack. We don't expect a stack transition function to appear in a
user G.
Change-Id: I173e89ead2cd4fbf1f0f8cca225f28718b5baebe
Reviewed-on: https://go-review.googlesource.com/c/go/+/531815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
Michael Pratt [Mon, 10 Apr 2023 21:11:39 +0000 (17:11 -0400)]
cmd/compile: synchronize inlinability logic between hairyVisitor and mkinlcall
When computing function cost, hairyVisitor.doNode has two primary cases
for determining the cost of a call inside the function:
* Normal calls are simply cost 57.
* Calls that can be inlined have the cost of the inlined function body,
since that body will end up in this function.
Determining which "calls can be inlined" is where this breaks down.
doNode simply assumes that any function with `fn.Inl != nil` will get
inlined. However, this are more complex in mkinlcall, which has a
variety of cases where it may not inline.
For standard builds, most of these reasons are fairly rare (recursive
calls, calls to runtime functions in instrumented builds, etc), so this
simplification isn't too build.
However, for PGO builds, any function involved in at least one inlinable
hot callsite will have `fn.Inl != nil`, even though mkinlcall will only
inline at the hot callsites. As a result, cold functions calling hot
functions will use the (potentially very large) hot function inline body
cost in their call budget. This could make these functions too expensive
to inline even though they won't actually inline the hot function.
Handle this case plus the other inlinability cases (recursive calls,
etc) by consolidating mkinlcall's inlinability logic into
canInlineCallExpr, which is shared by doNode.
mkinlcall and doNode now have identical logic, except for one case: we
check for recursive cycles via inlined functions by looking at the
inline tree. Since we haven't actually done any inlining yet when in
doNode, we will miss those cases.
This CL doesn't change any inlining decisions in a standard build of the
compiler.
In the new inliner, the inlining decision is also based on the call
site, so this synchronization is also helpful.
Fixes #59484
Change-Id: I6ace66e37d50526535972215497ef75cd71f8b9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/483196 Reviewed-by: Than McIntosh <thanm@google.com>
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Keith Randall [Mon, 21 Aug 2023 22:55:35 +0000 (15:55 -0700)]
cmd/compile: when combining stores, use line number of first store
var p *[2]uint32 = ...
p[0] = 0
p[1] = 0
When we combine these two 32-bit stores into a single 64-bit store,
use the line number of the first store, not the second one.
This differs from the default behavior because usually with the combining
that the compiler does, we use the line number of the last instruction
in the combo (e.g. load+add, we use the line number of the add).
This is the same behavior that gcc does in C (picking the line
number of the first of a set of combined stores).
Change-Id: Ie70bf6151755322d33ecd50e4d9caf62f7881784
Reviewed-on: https://go-review.googlesource.com/c/go/+/521678
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com>
cui fliter [Thu, 12 Oct 2023 06:43:47 +0000 (14:43 +0800)]
compress: add available godoc link
Change-Id: Ia6e88aec59cb294e8b303a00fcd69f4cbf0dc09a
Reviewed-on: https://go-review.googlesource.com/c/go/+/534759 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
cui fliter [Thu, 12 Oct 2023 06:54:31 +0000 (14:54 +0800)]
container/heap: add available godoc link
Change-Id: I886a8869ba885286ac8219bc7e245c9237ad4c99
Reviewed-on: https://go-review.googlesource.com/c/go/+/534777 Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
cui fliter [Thu, 12 Oct 2023 06:13:36 +0000 (14:13 +0800)]
bufio: add available godoc link
Change-Id: Id32bae57c9fcc2074f82089ba9c69be9a601f128
Reviewed-on: https://go-review.googlesource.com/c/go/+/534758 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Ian Lance Taylor [Wed, 11 Oct 2023 21:09:20 +0000 (14:09 -0700)]
runtime: don't use atomic store in noteclear on AIX
In CL 163624 we added an atomic store in noteclear on AIX only.
In the discussion on issue #63384 we think we figured out that the
real problem was in the implementation of compare-and-swap on ppc64.
That is fixed by CL 533118, so the atomic store is no longer required.
For #30189
For #63384
Change-Id: I60f4f2fac75106f2bee51a8d9663259dcde2029c
Reviewed-on: https://go-review.googlesource.com/c/go/+/534517
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Joel Sing <joel@sing.id.au>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Cherry Mui [Sat, 7 Oct 2023 00:53:27 +0000 (20:53 -0400)]
runtime/cgo: avoid taking the address of crosscall2 in code
Currently, set_crosscall2 takes the address of crosscall2 without
using the GOT, which, on some architectures, results in a
PC-relative relocation (e.g. R_AARCH64_ADR_PREL_PG_HI21 on ARM64)
to the crosscall2 symbol. But crosscall2 is dynamically exported,
so the C linker thinks it may bind to a symbol from a different
DSO. Some C linker may not like a PC-relative relocation to such a
symbol. Using a local trampoline to avoid taking the address of a
dynamically exported symbol.
It may be possible to not dynamically export crosscall2. But this
CL is safer for backport. Later we may remove the trampolines
after unexport crosscall2, if they are not needed.
Fixes #62556.
Change-Id: Id28457f65ef121d3f87d8189803abc65ed453283
Reviewed-on: https://go-review.googlesource.com/c/go/+/533535
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Ian Lance Taylor [Wed, 11 Oct 2023 20:24:54 +0000 (13:24 -0700)]
net: clear malloc'ed memory in cgoResSearch
For #61666
Change-Id: I7a0a849fba0abebe28804bdd6d364b154456e399
Reviewed-on: https://go-review.googlesource.com/c/go/+/534516
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Ian Lance Taylor [Fri, 6 Oct 2023 19:20:19 +0000 (12:20 -0700)]
cmd/compile, runtime/internal/atomic: add lwsync for false ppc64 cas
This CL changes ppc64 atomic compare-and-swap (cas). Before this CL,
if the cas failed--if the value in memory was not the value expected
by the cas call--the atomic function would not synchronize memory.
In the note code in runtime/lock_sema.go, used on BSD systems,
notesleep and notetsleep first try a cas on the key. If that cas fails,
something has already called notewakeup, and the sleep completes.
However, because the cas did not synchronize memory on failure,
this meant that notesleep/notetsleep could return to a core that was
unable to see the memory changes that the notewakeup was reporting.
Fixes #30189
Fixes #63384
Change-Id: I9b921de5c1c09b10a37df6b3206b9003c3f32986
Reviewed-on: https://go-review.googlesource.com/c/go/+/533118
Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Ian Lance Taylor [Wed, 20 Sep 2023 23:16:29 +0000 (16:16 -0700)]
cmd/compile: use absolute file name in isCgo check
For #23672
Fixes #63211
Fixes CVE-2023-39323
Change-Id: I4586a69e1b2560036afec29d53e53cf25e6c7352
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/2032884 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/534158 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>