Mateusz Poliwczak [Tue, 20 Feb 2024 17:15:51 +0000 (17:15 +0000)]
net: mention the cgo thread limit in package docs
Updates #63978
Change-Id: I39a5c812b4f604baf4ca5ffcff52b8dc17d4990d
GitHub-Last-Rev: 4ab6e262f4fd37ff32d6b3eb756fea187e5d6e53
GitHub-Pull-Request: golang/go#63990
Reviewed-on: https://go-review.googlesource.com/c/go/+/539361 Reviewed-by: Ian Lance Taylor <iant@google.com>
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Robert Griesemer [Thu, 8 Feb 2024 23:35:22 +0000 (15:35 -0800)]
cmd/compile/internal/types2: use ExprString instead of syntax.String
This further reduces the differences between go/types and types2.
Change-Id: I1426c2f7c58e2d1123d93f68fbdda01b0cc2d46e
Reviewed-on: https://go-review.googlesource.com/c/go/+/562836
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Paul E. Murphy [Wed, 14 Feb 2024 22:42:27 +0000 (16:42 -0600)]
cmd/cgo/internal/test: disable issue8694 and issue9510 on ppc64x with internal linking
These link in libgcc functions which require more advanced handling
of small toc relocations. The internal linker is not capable of
placing these functions to ensure they are always resolvable.
Change-Id: Idd4a0264bfbbd7016472120dc4bee84814e8c2eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/564235
Run-TryBot: Paul Murphy <murp@ibm.com> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
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hi-rustin [Mon, 19 Feb 2024 15:22:37 +0000 (15:22 +0000)]
runtime/pprof: update outdated google/pprof link
Google/pprof changed the master branch to main, so it might be better to update it to the latest.
Change-Id: Id29aca80a9a83a9c10da215180ad65816bc88936
GitHub-Last-Rev: 0023c28dc0d84a2529e24c694acfed7a363d2d0b
GitHub-Pull-Request: golang/go#65792
Reviewed-on: https://go-review.googlesource.com/c/go/+/565177
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Shang Ding [Sat, 17 Feb 2024 18:21:54 +0000 (12:21 -0600)]
testing/fstest: return base name from mapfs FileInfo.Name
Change-Id: I5a68389a68875dbb2f6875de3f64f63dd7ca1af7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565055
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Change-Id: Ifdc6e22d52317cdb90a607ac4d72437d4d6b33e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/564716
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Andy Pan [Fri, 2 Feb 2024 03:22:57 +0000 (11:22 +0800)]
runtime: use eventfd as the event wait/notify mechanism for epoll
Fixes #65443
Change-Id: I9ad4689b36e87ee930d35a38322a8797896483b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/560615
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Mauri de Souza Meneguzzo [Sun, 18 Feb 2024 12:23:20 +0000 (12:23 +0000)]
regexp/syntax: regenerate docs with mksyntaxgo
This makes the docs up-to-date by running doc/mksyntaxgo from the google/re2 repo.
Change-Id: I80358eed071e7566c85edaeb1cc5514a6d8c37a7
GitHub-Last-Rev: 0f8c8df4f213ce89fbea89e81f0ea3babd59d38f
GitHub-Pull-Request: golang/go#65249
Reviewed-on: https://go-review.googlesource.com/c/go/+/558136 Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Julian Tibble [Wed, 14 Feb 2024 13:24:52 +0000 (13:24 +0000)]
net/http: add missing call to decConnsPerHost
A recent change to Transport.dialConnFor introduced an early return that
skipped dialing. This path did not call decConnsPerHost, which can cause
subsequent HTTP calls to hang if Transport.MaxConnsPerHost is set.
Fixes: #65705
Change-Id: I157591114b02a3a66488d3ead7f1e6dbd374a41c
Reviewed-on: https://go-review.googlesource.com/c/go/+/564036 Reviewed-by: Damien Neil <dneil@google.com>
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Andy Pan [Tue, 14 Nov 2023 15:56:51 +0000 (23:56 +0800)]
net: add KeepAliveConfig and implement SetKeepAliveConfig
Fixes #62254
Fixes #48622
Change-Id: Ida598e7fa914c8737fdbc1c813bcd68adb5119c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/542275 Reviewed-by: Michael Knyszek <mknyszek@google.com>
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kkhaike [Sat, 16 Dec 2023 10:08:16 +0000 (18:08 +0800)]
net: prevent unintended retries upon receiving an empty answer response from the DNS server.
CL https://golang.org/cl/37879 migrates DNS message parsing to the golang.org/x/net/dns/dnsmessage package. However, during the modification of the "lame referral" error check introduced by CL https://golang.org/cl/22428, a condition was overlooked. This omission results in unexpected retries when a DNS server returns an empty response (not an invalid response, but one that includes an additional section).
Fixes #57697
Fixes #64783
Change-Id: I203896aa2902c305569005c1712fd2f9f13a9b6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/550435
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aimuz [Sat, 18 Nov 2023 03:35:07 +0000 (03:35 +0000)]
net/netip: optimize parseIPv4 and refactor IPv6 embedded IPv4 parsing
This change refactors the parseIPv4 function to extract a new helper
function, parseIPv4Fields, which is now used by both parseIPv4 and
parseIPv6 functions. The extraction of this logic into a separate
helper function removes code duplication and improves the performance
of parsing IPv6 addresses that contain an embedded IPv4 address.
Additionally, the error handling within the IP address parsing logic
has been streamlined to provide clearer messages when encountering
incorrect formats or values in IPv4 fields.
Change-Id: I403cb76f449a0bf203a821294df25d3c9031df4c
GitHub-Last-Rev: 917f78ce4ef2a4156d0291c36047689de1764c3f
GitHub-Pull-Request: golang/go#64219
Reviewed-on: https://go-review.googlesource.com/c/go/+/543179 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
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Olivier Mengué [Tue, 16 Jan 2024 22:30:12 +0000 (23:30 +0100)]
hash/crc32: fix code generator to use the Go standard
Apply the Go standard for code generation (https://go.dev/s/generatedcode)
to generated crc32_table_ppc64le.s despites this is not
generated Go but Assembly. This is to help prevent changes like CL 478976
that changed the generated output without fixing the generator.
Add gen.go to allow to launch code generation with "go generate".
Change-Id: I8671284265425826c8620dbec055519b992fa04e
Reviewed-on: https://go-review.googlesource.com/c/go/+/556335
Auto-Submit: Michael Pratt <mpratt@google.com> Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Mateusz Poliwczak [Sat, 10 Feb 2024 18:52:27 +0000 (18:52 +0000)]
net: move go/cgo resolver forcing functions to one file
The forceGoDNS/forceCgoDNS functions currently return nil
or an empty func on plan9, but they don't have to, because
we already support go resolver there (Dial field required).
Change-Id: Iba6211ca0235874f39e5fcacb3932bb16768c702
GitHub-Last-Rev: 4072ad4a05366a03749e8cfcf27efb9f198aacec
GitHub-Pull-Request: golang/go#63545
Reviewed-on: https://go-review.googlesource.com/c/go/+/534938 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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runtime: use a high res timer to signal io completion ports on windows
GetQueuedCompletionStatusEx has a ~16ms timeout resolution. Use a
WaitCompletionPacket associated with the I/O Completion Port (IOCP)
and a high resolution timer so the IOCP is signaled on timer expiry,
therefore improving the GetQueuedCompletionStatusEx timeout resolution.
BenchmarkSleep from the time package shows an important improvement:
goos: windows
goarch: amd64
pkg: time
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
Sleep-12 1258.5µ ± 5% 250.7µ ± 1% -80.08% (p=0.000 n=20)
Fixes #44343.
Change-Id: I79fc09e34dddfc49e0e23c3d1d0603926c22a11d
Reviewed-on: https://go-review.googlesource.com/c/go/+/488675 Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Daniel Martí [Sun, 11 Feb 2024 21:40:26 +0000 (21:40 +0000)]
math/rand/v2: use a doc link for crypto/rand
It's easier to go look at its documentation when there's a link.
Change-Id: Iad6c1aa1a3f4b9127dc526b4db473239329780d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/563255 Reviewed-by: Ian Lance Taylor <iant@google.com>
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qmuntal [Mon, 12 Feb 2024 11:38:37 +0000 (12:38 +0100)]
runtime: use the right number of parameters in syscall_SyscallX on Windows
The syscall_SyscallX functions currently discard the nargs parameter
when calling syscall_SyscallN. This precludes some optimizations
down the line. For example, on amd64, a syscall that takes 0 arguments
don't need to set any of the params passing registers (CX, DX, R8, and
R9).
This CL updates all syscall_SyscallX functions so they call
syscall_SyscallN with an argument slice of the right length.
While here, remove the hack in syscall_SyscallN to support less than 4
arguments, and update instead asmstdcall on amd64 to properly handle
this case.
Change-Id: I0328e14f34c2b000fde06cc6a579b09e8c32f2b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/563315
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ALX99 [Sat, 17 Feb 2024 04:43:34 +0000 (04:43 +0000)]
context: update doc comment to link to context interface
Linking to the Context interface in the WithCancel doc comment makes
it more consistent with the WithDeadline and WithTimeout doc comments.
Change-Id: Ic935c63e8262784be5f3564816402221ba2fbd63
GitHub-Last-Rev: 9c6bb607a94f6f4cd27cc3f5e39c192e088ab386
GitHub-Pull-Request: golang/go#65768
Reviewed-on: https://go-review.googlesource.com/c/go/+/564996 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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Jes Cok [Fri, 16 Feb 2024 21:16:29 +0000 (21:16 +0000)]
reflect: make Value.Comparable return true for nil interface value
Fixes #65718
Change-Id: I0b3edf9085f2d71f915bdf8ff9d312509b438c5f
GitHub-Last-Rev: 9fb1ca1a631c648d1f38f75b1fcb2f878048706b
GitHub-Pull-Request: golang/go#65750
Reviewed-on: https://go-review.googlesource.com/c/go/+/564795
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Keith Randall [Wed, 13 Dec 2023 21:45:05 +0000 (13:45 -0800)]
internal/abi: get rid of itab blank field
We don't need it anymore, as we're accessing all the field offsets
symbolically.
This won't affect 64-bit, but it makes itabs on 32-bit 4 bytes smaller.
Change-Id: I7fb937813111476fd5ab03005b248ea7bb962cf6
Reviewed-on: https://go-review.googlesource.com/c/go/+/549517 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com>
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Keith Randall [Wed, 13 Dec 2023 21:20:01 +0000 (13:20 -0800)]
cmd/compile: use symbolic offsets of fields in internal/abi.ITab
After this CL, we can reorder or pad internal/abi.ITab fields at will
(keeping Fun last, and updating ITabTypeOff correctly) without
breaking anything.
Change-Id: Ib7bb5828519813e0d1aa36be5092f96fcd62b3be
Reviewed-on: https://go-review.googlesource.com/c/go/+/549516 Reviewed-by: Keith Randall <khr@google.com>
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Cherry Mui [Fri, 9 Feb 2024 19:17:18 +0000 (14:17 -0500)]
cmd/dist,cmd/go: define assembly macros, handle GOARM value with soft/hardfloat
CL 525637 added GOARM_x assembly macros based on GOARM value. But
it did not define the macro in cmd/dist, so the macro is not set
during bootstrapping. This CL defines them.
With CL 514907, cfg.GOARM can also take a soft/hardfloat suffix,
like "7,hardfloat". Handle that case.
For #65601.
Change-Id: I60ffe7e8b623ae693d91d6e8595067a6f76565b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/562995
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Cherry Mui [Fri, 16 Feb 2024 15:58:56 +0000 (10:58 -0500)]
runtime/internal/atomic: correct GOARM=7 guard at a DMB instruction
CL 525637 changed to the guard of DMB instruction from the
compiled-in runtime.goarm value to GOARM_7 macro and CPU feature
detection. It missed a place where runtime.goarm is loaded to a
register and reused later. This CL corrects the condition.
Fixes #65601.
Change-Id: I2ddefd03a1eb1048dbec0254c6e234c65b054279
Reviewed-on: https://go-review.googlesource.com/c/go/+/564855
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Sam Thanawalla [Thu, 8 Feb 2024 18:32:55 +0000 (18:32 +0000)]
cmd/go: show Sum/GoModSum when listing modules
Fixes #52792
Tested: Ran go test cmd/go
Change-Id: Ib7006256f4dca9e9fbfce266c00253c69595d6ab
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sivchari [Wed, 2 Aug 2023 02:55:17 +0000 (02:55 +0000)]
database/sql/driver: add a new test case for type t
Change-Id: I38bb68570f7f097a6dfeef1c75896396992d81f7
GitHub-Last-Rev: 10ba48a546956fa2a5b602680fb312638aade92d
GitHub-Pull-Request: golang/go#53706
Reviewed-on: https://go-review.googlesource.com/c/go/+/416234 Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Cherry Mui [Thu, 15 Feb 2024 22:05:05 +0000 (17:05 -0500)]
cmd/link: replace function pointers to static calls in loadelf
When transitioning between the old object loader and the new
object loader, to support both we made loadelf to take symbol
loading functions as function pointers. Now we only have the new
object loader. Change the function pointers back to static calls.
Change-Id: Ia623a6010376a3d7c0be5eacae002144d956f28a
Reviewed-on: https://go-review.googlesource.com/c/go/+/564635 Reviewed-by: Than McIntosh <thanm@google.com>
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Cherry Mui [Tue, 6 Feb 2024 23:08:34 +0000 (18:08 -0500)]
cmd/link: add -randlayout flag to randomize function ordering
Sometimes we found that benchmark results may strongly depend on
the ordering of functions laid out in the binary. This CL adds a
flag -randlayout=seed, which randomizes the function layout (in a
deterministic way), so can verify the benchmark results against
different function ordering.
Change-Id: I85f33881bbfd4ca6812fbd4bec00bf475755a09e
Reviewed-on: https://go-review.googlesource.com/c/go/+/562157 Reviewed-by: David Chase <drchase@google.com>
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Joel Sing [Thu, 1 Feb 2024 12:58:54 +0000 (23:58 +1100)]
cmd/compile: improve rotations for riscv64
Enable canRotate for riscv64, enable rotation intrinsics and provide
better rewrite implementations for rotations. By avoiding Lsh*x64
and Rsh*Ux64 we can produce better code, especially for 32 and 64
bit rotations. By enabling canRotate we also benefit from the generic
rotation rewrite rules.
Change-Id: I1a2036fdc57cf88ebb6617eb8d92e1d187e183b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/560315 Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
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Jin Lin [Thu, 8 Feb 2024 20:52:07 +0000 (12:52 -0800)]
cmd/compile: update the incorrect assignment of call site offset.
The call site calculation in the previous version is incorrect. For
the PGO preprocess file, the compiler should directly use the call
site offset value. Additionly, this change refactors the preprocess
tool to clean up unused fields including startline, the flat and the
cum.
Change-Id: I7bffed3215d4c016d9a9e4034bfd373bf50ab43f
Reviewed-on: https://go-review.googlesource.com/c/go/+/562795 Reviewed-by: Cherry Mui <cherryyz@google.com>
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Joe Tsai [Tue, 13 Feb 2024 23:34:26 +0000 (15:34 -0800)]
log/slog: document atomicity guarantees and ordering limitations of handlers
The new wording is slightly more strict than before in that
it guarantees each Write only contains exactly one Record,
while the previous wording opened up the possibility for
multiple Records in a Write call.
We also add a comment about the lack of sorting guarantees for
concurrently logged Records. That is, the obtained lock only covers
the Write call, rather than the combination of the call to time.Now,
JSON/text serialization, and also the Write call.
Change-Id: Ia65c50579215a35a1f5b2952c6954ddb60e7fe66
Reviewed-on: https://go-review.googlesource.com/c/go/+/563976 Reviewed-by: Jonathan Amsterdam <jba@google.com>
TryBot-Bypass: Jonathan Amsterdam <jba@google.com> Reviewed-by: Alan Donovan <adonovan@google.com>
Andy Pan [Sun, 4 Feb 2024 06:50:42 +0000 (14:50 +0800)]
net/http: reject requests with invalid Content-Length headers
According to RFC 9110 and RFC 9112, invalid "Content-Length" headers
might involve request smuggling or response splitting, which could
also cause security failures. Currently, `net/http` ignores all
"Content-Length" headers when there is a "Transfer-Encoding" header and
forward the message anyway while other mainstream HTTP implementations
such as Apache Tomcat, Nginx, HAProxy, Node.js, Deno, Tornado, etc. reject
invalid Content-Length headers regardless of the presence of a
"Transfer-Encoding" header and only forward chunked-encoding messages
with either valid "Content-Length" headers or no "Content-Length" headers.
Fixes #65505
Change-Id: I73af2ee0785137e56c7546a4cce4a5c5c348dbc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/561075
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Dmitri Shuralyov [Wed, 14 Feb 2024 16:52:22 +0000 (11:52 -0500)]
cmd/link/internal/ld: unify OS/SDK versions for macOS linking
Go 1.23 will require macOS 11 Big Sur or later, even on AMD64.
The comment here suggests the main requirement for the OS and
SDK version is to be recent enough not to break Apple signing,
and recent enough not to cause other problems.
For now, this CL simplifies the code by merging the ARM64 and
AMD64 cases into one, given 1.23 will be the first Go release
with a common minimum macOS version for both architectures so
there's no need to treat them separately here.
For #64207.
Change-Id: I821fcb9a2a316de0703833c8a75abcbaa10b17a3
Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64_11,gotip-darwin-amd64_14,gotip-darwin-arm64_11,gotip-darwin-arm64_13
Reviewed-on: https://go-review.googlesource.com/c/go/+/563857 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
Dmitri Shuralyov [Wed, 14 Feb 2024 16:25:03 +0000 (11:25 -0500)]
doc/go1.23: document macOS requirements
For #64207.
For #65614.
Change-Id: Ia5365b4090060e0657c255341751d3e67691f836
Reviewed-on: https://go-review.googlesource.com/c/go/+/563856 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
qmuntal [Thu, 8 Feb 2024 07:46:24 +0000 (08:46 +0100)]
runtime: make netpoll events sources identifiable on Windows
This is another attempt at CL 558895, but without adding stale pollDescs
protection, which deviates from the original goal of the CL and adds
complexity without proper testing.
It is currently not possible to distinguish between a netpollBreak,
an internal/poll WSA operation, and an external WSA operation (as
in #58870). This can cause spurious wakeups when external WSA operations
are retrieved from the queue, as they are treated as netpollBreak
events.
This CL makes use of completion keys to identify the source of the
event.
While here, fix TestWSASocketConflict, which was not properly
exercising the "external WSA operation" case.
Change-Id: I91f746d300d32eb7fed3c8f27266fef379360d98
Reviewed-on: https://go-review.googlesource.com/c/go/+/561895 Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
qmuntal [Mon, 12 Feb 2024 10:04:24 +0000 (11:04 +0100)]
net: skip TestModeSocket on older Windows versions
CL 561937 taught os.Stat about IO_REPARSE_TAG_AF_UNIX and added a
test for it, TestModeSocket. This test fails on Windows older than
10.0.17063, in which AF_UNIX support was added. Skip the test on those
versions.
Mauri de Souza Meneguzzo [Wed, 7 Feb 2024 22:51:00 +0000 (22:51 +0000)]
internal/asan: add new package
The internal/asan package contains helper functions for manually
instrumenting code for the address sanitizer. It reexports the asan
routines in runtime unconditionally, making the functions a no-op if the
build flag "asan" is not present.
For #64611
Change-Id: Ie79e698aea7a6d969afd2a5f008c084c9545b1a5
GitHub-Last-Rev: e658670c146adb5a5496afe4a2425dd5291fd7ac
GitHub-Pull-Request: golang/go#64635
Reviewed-on: https://go-review.googlesource.com/c/go/+/548695 Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Ian Lance Taylor [Mon, 12 Feb 2024 03:54:52 +0000 (19:54 -0800)]
internal/safefilepath: use bytealg to search for zero byte
Change-Id: I20e72d421d89095c460495001969291b99cdf59e
Reviewed-on: https://go-review.googlesource.com/c/go/+/563139 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Rob Pike [Sun, 21 Jan 2024 06:20:02 +0000 (17:20 +1100)]
fmt: document how %#g handles infinities and NaNs
The %#g format prints a "Go-syntax representation", but there is
no such thing for IEEE754 infinities and NaNs, so just document
what happens, which is that it prints +Inf, -Inf, or NaN. We could
show something like math.Inf(1) and math.Nan(), but that doesn't
sit right, and anyway for NaNs you can't even recover the original
value. Simpler and more honest to give up.
Fixes #51486
Change-Id: I8d4e8186f5d7acc3e0e7b51d0b322142908ea0a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/557235
Run-TryBot: Rob Pike <r@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Michael Pratt [Mon, 12 Feb 2024 19:32:22 +0000 (14:32 -0500)]
runtime/cgo: add note about default stack bounds
The default case in x_cgo_getstackbound does not actually get the stack bound of
the current thread, but estimates the bound based on the default stack size. Add
a comment noting this.
Change-Id: I7d886461f0bbc795834bed37b554417cf3837a2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/563376
Auto-Submit: Michael Pratt <mpratt@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
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Jes Cok [Sat, 10 Feb 2024 01:25:05 +0000 (01:25 +0000)]
internal/xcoff: change zeroReaderAt to nobitsSectionReader for .bss with all 0s
Fixes #63337
Change-Id: I239315047e6e4325e2f471108fd764f8dbb7d5b2
GitHub-Last-Rev: cacdf0a279451ab97e6e6ce3fe0d3a025f5ce3aa
GitHub-Pull-Request: golang/go#64952
Reviewed-on: https://go-review.googlesource.com/c/go/+/553616
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Joe Tsai [Sat, 13 Jan 2024 02:13:14 +0000 (18:13 -0800)]
reflect: optimize TypeFor for non-interface types
The reflect.Type.Elem method is somewhat slow,
which is unfortunate since the reflect.TypeOf((*T)(nil)).Elem()
trick is only needed if T is an interface.
Optimize for concrete types by doing the faster reflect.TypeOf(v)
call first and only falling back on the Elem method if needed.
Performance:
name old time/op new time/op delta
TypeForString-24 9.10ns ± 1% 1.78ns ± 2% -80.49% (p=0.000 n=10+10)
TypeForError-24 9.55ns ± 1% 9.78ns ± 1% +2.39% (p=0.000 n=10+9)
Updates #60088
Change-Id: I2ae76988c9a3dbcbae10d2c19b55db3c8d4559bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/555597
Auto-Submit: Joseph Tsai <joetsai@digital-static.net> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
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qmuntal [Wed, 7 Feb 2024 16:40:24 +0000 (17:40 +0100)]
os: add os.ModeSocket support to os.Stat on windows
Unix sockets are identified by the IO_REPARSE_TAG_AF_UNIX reparse tag.
Teach fileStat.Mode() to recognize this tag and set the os.ModeSocket
bit in such case.
Note that there is a bug starting in Windows 19H1 until 20H1 that
makes the IO_REPARSE_TAG_AF_UNIX tag not being set for unix sockets.
This CL doesn't provide a workaround for this bug.
Fixes #33357.
Change-Id: Iea8f24b20672c8d4b03f55ef298d128431dc3fac
Reviewed-on: https://go-review.googlesource.com/c/go/+/561937
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alex Brainman <alex.brainman@gmail.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Bryan Mills <bcmills@google.com>
Mauri de Souza Meneguzzo [Fri, 9 Feb 2024 11:47:26 +0000 (11:47 +0000)]
runtime/cgo: ignore -Watomic-alignment in gcc_libinit.c
When cross-compiling a cgo program with CC=clang for Linux/ARMv5,
atomic warnings cause build errors, as cgo uses -Werror.
These warnings seem to be harmless and come from the usage of
__atomic_load_n, which is emulated due to the lack of atomic
instructions in armv5.
Fixes #65290
Change-Id: Ie72efb77468f06888f81f15850401dc8ce2c78f9
GitHub-Last-Rev: fbad847b962f6b4599cd843018e79f4b55be097e
GitHub-Pull-Request: golang/go#65588
Reviewed-on: https://go-review.googlesource.com/c/go/+/562348
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Andy Pan [Thu, 1 Feb 2024 03:28:44 +0000 (11:28 +0800)]
io/fs: set ErrInvalid for FS.Open from SubFS when it fails ValidPath
Fixes #65419
Change-Id: I8f9f82ab0387d8bb39aaca4f9e60e36ee15c587d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560137
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Nicolas Hillegeer [Thu, 8 Feb 2024 16:56:33 +0000 (08:56 -0800)]
runtime: call traceAdvance before exiting
This ensures the trace buffers are as up-to-date as possible right
before crashing. It increases the chance of finding the culprit for the
crash when looking at core dumps, e.g. if slowness is the cause for the
crash (monitor kills process).
Fixes #65319.
Change-Id: Iaf5551911b3b3b01ba65cb8749cf62a411e02d9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/562616
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
> Messages carried by UDP are restricted to 512 bytes (not counting
> the IP or UDP headers). Longer messages are truncated and the TC
> bit is set in the header.
However, TCP also have a size limitation of 65535 bytes
> The message is prefixed with a two byte length field which gives
the message length, excluding the two byte length field.
These limitations makes that the maximum possible number of A records
per RRSet is ~ 4090.
There are environments like Kubernetes that may have larger number of
records (5000+) that does not fit in a single message. In this cases,
the DNS server sets the Truncated bit on the message to indicate that
it could not send the full answer despite is using TCP.
We should only retry when the TC bit is set and the connection is UDP,
otherwise, we'll never being able to get an answer and the client will
receive an errNoAnswerFromDNSServer, that is a different behavior than
the existing in the glibc resolver, that returns all the existing
addresses in the TCP truncated response.
Fixes #64896
Signed-off-by: Antonio Ojea <aojea@google.com>
Change-Id: I1bc2c85f67668765fa60b5c0378c9e1e1756dff2
Reviewed-on: https://go-review.googlesource.com/c/go/+/552418 Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Gudger <ian@iangudger.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Mateusz Poliwczak <mpoliwczak34@gmail.com> Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com> Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Paul E. Murphy [Tue, 14 Nov 2023 20:45:21 +0000 (14:45 -0600)]
cmd/internal/obj/ppc64: add new constant optab classifications
Make C_S32CON, C_U32CON, and C_32CON distinct classifiers to allow
more specific matching of 32 bit constants. C_U31CON is added to
support C_S32CON.
Likewise, add C_16CON which is the union of C_S16CON and C_U16CON
classification. This wil allow simplifying MOVD/MOVW optab entries
in a future patch.
Change-Id: I193acc0ded8f3edd91d306e39c3e7e55a9811e04
Reviewed-on: https://go-review.googlesource.com/c/go/+/562346 Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Michael Pratt [Thu, 8 Feb 2024 18:07:33 +0000 (13:07 -0500)]
cmd/compile: fail noder.LookupFunc gracefully if function generic
PGO uses noder.LookupFunc to look for devirtualization targets in
export data. LookupFunc does not support type-parameterized
functions, and will currently fail the build when attempting to lookup
a type-parameterized function because objIdx is passed the wrong
number of type arguments.
This doesn't usually come up, as a PGO profile will report a generic
function with a symbol name like Func[.go.shape.foo]. In export data,
this is just Func, so when we do LookupFunc("Func[.go.shape.foo]")
lookup simply fails because the name doesn't exist.
However, if Func is not generic when the profile is collected, but the
source has since changed to make Func generic, then LookupFunc("Func")
will find the object successfully, only to fail the build because we
failed to provide type arguments.
Handle this with a objIdxMayFail, which allows graceful failure if the
object requires type arguments.
Bumping the language version to 1.21 in pgo_devirtualize_test.go is
required for type inference of the uses of mult.MultFn in
cmd/compile/internal/test/testdata/pgo/devirtualize/devirt_test.go.
Fixes #65615.
Change-Id: I84d9344840b851182f5321b8f7a29a591221b29f
Reviewed-on: https://go-review.googlesource.com/c/go/+/562737 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Matthew Dempsky [Wed, 7 Feb 2024 18:23:53 +0000 (10:23 -0800)]
cmd/compile: separate inline cost analysis from applying inlining
This CL separates the pass that computes inlinability from the pass
that performs inlinability. In particular, the latter can now happen
in any flat order, rather than bottom-up order. This also allows
inlining of calls exposed by devirtualization.
Change-Id: I389c0665fdc8288a6e25129a6744bfb1ace1eff7
Reviewed-on: https://go-review.googlesource.com/c/go/+/562319
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Nick Ripley [Wed, 7 Feb 2024 16:43:05 +0000 (11:43 -0500)]
cmd/trace/v2,internal/trace: use correct frame for identifying goroutines
To determine the identity of a goroutine for displaying in the trace UI,
we should use the root frame from a call stack. This will be the
starting function for the goroutine and is the same for each call stack
from a given goroutine. The new tracer no longer includes starting PCs
for goroutines which existed at the start of tracing, so we can't use a
PC for grouping together goroutines any more. Instead, we just use the
name of the entry function for grouping.
Fixes #65574
Change-Id: I5324653316f1acf0ab90c30680f181060ea45dd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/562455 Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Joe Tsai [Sat, 13 Jan 2024 00:28:56 +0000 (16:28 -0800)]
context: improve valueCtx.String
Check for stringer on the key itself.
This is useful for locally defined context key types,
where there may be multiple instances of that type.
For example, see http.contextKey,
which can now be called after this change.
For the value itself, print the type at least
instead of just resorting to "<not stringer>".
Change-Id: I588ef1df34e90fb9ebd83cb180fea495e1fedaa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/555697 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Jorropo [Mon, 5 Feb 2024 00:22:58 +0000 (01:22 +0100)]
time: fix FuzzFormatRFC3339 nano comparison
Change-Id: I13ed84b99459d5844abb6e932cc4b8e0bd3ae9f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/561215
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Alan Donovan [Mon, 5 Feb 2024 21:38:41 +0000 (16:38 -0500)]
runtime: traceback: include pc=0x%x for inline frames
Crash monitoring tools may parse the PC values and feed them
to CallersFrames, which does not run the inline unwinder, since
Callers already did so. So, the GOTRACEBACK=system output
must also include PC values even for inlined frames.
(The actual values are just marker NOP instructions,
but that isn't important.)
This CL also includes a test that the PC values can be
parsed out of the crash report and fed to CallersFrames
to yield a sensible result. (The logic is a distillation
of the x/telemetry crashmonitor.)
The previously printed PCs were in fact slightly wrong
for frames containing inlined calls: instead of the
virtual CALL instruction (a NOP) to the first
inlined call, it would display the PC of the
CALL in the innermost inlined function.
Change-Id: I64a06771fc191ba16c1383b8139b714f4f299703
Reviewed-on: https://go-review.googlesource.com/c/go/+/561635
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Alan Donovan <adonovan@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
Michael Matloob [Thu, 8 Feb 2024 17:50:44 +0000 (17:50 +0000)]
cmd/go: add telemetry counters for flag names and subcommand
For #58894,#65586
This is a revert of CL 560655 which was a revert of CL 559519.
CL 559519 was reverted because it was broken on windows/386. But now
CL 562715 pulls in x/telemetry CL 560462 which disables telemetry on
windows/386, fixing that issue.
Change-Id: I094e90c28bca02f2303807d3b008f2ef9d59433c
Reviewed-on: https://go-review.googlesource.com/c/go/+/562735 Reviewed-by: Bryan Mills <bcmills@google.com>
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Jes Cok [Wed, 7 Feb 2024 04:56:26 +0000 (04:56 +0000)]
encoding/xml: rewrite func procInst
This CL tries to make function procInst more exact,
also adds test cases, however, including tricky ones.
Change-Id: If421299fc84d136e56a25dba7a4919c4424702c8
GitHub-Last-Rev: b9a3192718ae5535d66fddd260c27b48d93b4af1
GitHub-Pull-Request: golang/go#64336
Reviewed-on: https://go-review.googlesource.com/c/go/+/544475
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Michael Matloob [Mon, 5 Feb 2024 17:20:45 +0000 (12:20 -0500)]
internal/goroot: in IsStandardPackage check for go source files
Be more strict in IsStandardPackage: before this change we'd just
check for the existence of the directory, but now we check to see that
there's at least one .go file in the directory.
Also update some comments in the modindex package to reflect the fact
that an IndexPackage might represent a directory that does not contain
any source files.
Meng Zhuo [Mon, 5 Feb 2024 12:49:16 +0000 (20:49 +0800)]
test/codegen: add float max/min codegen test
As CL 514596 and CL 514775 adds hardware implement of float
max/min, we should add codegen test for these two CL.
Change-Id: I347331032fe9f67a2e6fdb5d3cfe20203296b81c
Reviewed-on: https://go-review.googlesource.com/c/go/+/561295 Reviewed-by: Joel Sing <joel@sing.id.au>
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Ian Lance Taylor [Wed, 7 Feb 2024 21:36:46 +0000 (13:36 -0800)]
slices: document that BinarySearch[Func] return earliest position
Fixes #65446
Change-Id: I08dc512fb1f0101eb8aac8767cdf582360699559
Reviewed-on: https://go-review.googlesource.com/c/go/+/562345 Reviewed-by: Eli Bendersky <eliben@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
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Ian Lance Taylor [Tue, 13 Dec 2022 22:51:17 +0000 (14:51 -0800)]
net: don't return errno from _C_res_nsearch
We ignore the value anyhow.
Change-Id: I1b1db7831c42bf852652236212812fd5cf258530
Reviewed-on: https://go-review.googlesource.com/c/go/+/457439 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Dominik Honnef [Sat, 20 Jan 2024 16:34:06 +0000 (17:34 +0100)]
internal/trace/v2: store stacks as PCs, not frames
Most stacks share some frames, especially prefixes, and deduplicating
them can save significant amounts of memory.
This will be especially true when we convert traces from the old to the
new format. Here, all stacks exist in a single generation and will be
live together.
For busy traces, such as one of running Staticcheck on std, with CPU
profiling enabled, this change saves ~400 MiB of memory.
Change-Id: Ie676f628dd2715e1c6077747dd4e08acf3331e5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/557355 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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