Add the Localize function, which takes an io/fs slash-separated path
and returns an operating system path.
Localize returns an error if the path cannot be represented on
the current platform.
Replace internal/safefile.FromFS with Localize,
which serves the same purpose as this function.
The internal/safefile package remains separate from path/filepath
to avoid a dependency cycle with the os package.
Fixes#57151
Change-Id: I75c88047ddea17808276761da07bf79172c4f6fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/531677
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This reverts CL 528438.
Reason for revert: Implicated in "bad FD" test failures. Full extent of
issue still unclear.
For #62654.
Fixes#65857.
Change-Id: I066e38040544c506917e90255bd0e330964a0276
Reviewed-on: https://go-review.googlesource.com/c/go/+/566477
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This reverts CL 542699.
Reason for revert: Some applications assume FindProcess does not return
errors.
For #62654.
Fixes#65866.
Change-Id: Ic185a6253c8e508b08150b618c39a9905f6cdd60
Reviewed-on: https://go-review.googlesource.com/c/go/+/566476
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There were a bit too many conditional branches in the old code,
resulting in a poor readability. It could be more concise by reducing
and consolidating some of the conditions.
Furthermore, how we've determined whether or not the data transimission
was handled by sendfile(2) seems inappropriate, because it marked the
operation as unhandled whenever any non-retryable error occurs from
calling sendfile(2), it doesn't look like a right approach, at least
this is an inconsistent behavior with what we've done in Splice.
Related to #64044
Change-Id: Ieb65e0879a8841654d0e64a1263a4e43179df1ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/537275
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This function is copied to x/exp/trace. In https://go.dev/cl/566255 a
change is made where the source is a bytes.Reader instead of a
bufio.Reader from one of the two callers. Change the prototype here
instead of diverging the implementations.
Change-Id: I594224663996eadbc8c388442d68ac5706c52c8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/566236
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For #65355
Change-Id: I5fefe30dcb520159de565e61dafc74a740fc8730
Reviewed-on: https://go-review.googlesource.com/c/go/+/559715
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Amend FindProcess to use pidfdFind, and make it return ErrProcessDone
if pidfdFind is used and the process is not found.
Since this is a change in API, introduce GODEBUG osfinderr=0 setting
to disable the feature.
Change-Id: I724c6f622f0c99f21a70b864cf7cf2b8836869ee
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Fixes#65854.
For #65778. // for x/tools/cmd/gotype
Change-Id: I67d4644b28e831926fc6c233098aa1755c57162f
Reviewed-on: https://go-review.googlesource.com/c/go/+/565835
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Use Process.handle field to store pidfd, and make use of it. Only use
pidfd functionality if all the needed syscalls are available.
1. StartProcess: obtain the pidfd from the kernel, if available,
using the functionality added by CL 520266. Note we could not modify
syscall.StartProcess to return pidfd directly because it is a public
API and its callers do not expect it, so we have to use ensurePidfd
and getPidfd.
2. (*Process).Kill: use pidfdSendSignal, if the syscall is available
and pidfd is known. This is slightly more complicated than it should
be, since the syscall can be blocked by e.g. seccomp security policy,
therefore the need for a function to check if it's actually working,
and a soft fallback to kill. Perhaps this precaution is not really
needed.
3. (*Process).Wait: use pidfdWait, if available, otherwise fall back to
using waitid/wait4. This is also more complicated than expected due
to struct siginfo_t idiosyncrasy.
NOTE pidfdSendSignal and pidfdWait are used without a race workaround
(blockUntilWaitable and sigMu, added by CL 23967) because with pidfd,
PID recycle issue doesn't exist (IOW, pidfd, unlike PID, is guaranteed
to refer to one particular process) and thus the race doesn't exist
either.
For #62654.
Updates #13987.
Change-Id: I22ebcc7142b16a3a94c422d2f32504d1a80e8a8f
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/528438
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The internal/msan package contains helper functions for manually
instrumenting code for the memory sanitizer. It exports the private
msan routines in runtime unconditionally, making the functions a
no-op if the build flag "msan" is not present.
For #64611
Change-Id: If43f29e112ac79a47083c9dbdf2c61a0641e80b1
GitHub-Last-Rev: 0a644bd6f1
GitHub-Pull-Request: golang/go#64637
Reviewed-on: https://go-review.googlesource.com/c/go/+/548676
Reviewed-by: Austin Clements <austin@google.com>
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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
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Reviewed-by: Keith Randall <khr@google.com>
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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
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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
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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: e658670c14
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>
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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>
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Fixes#63337
Change-Id: I239315047e6e4325e2f471108fd764f8dbb7d5b2
GitHub-Last-Rev: cacdf0a279
GitHub-Pull-Request: golang/go#64952
Reviewed-on: https://go-review.googlesource.com/c/go/+/553616
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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
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Reviewed-by: Bryan Mills <bcmills@google.com>
This would have caught #65607.
On my machine:
internal/trace/v2: ~13s
internal/trace/v2: -short: ~4s
internal/trace/v2: -race -short: ~20s
internal/trace/v2: -race: ~46s
For #65607.
Change-Id: I03a555ebaf8c761c98a82b6d35fa16d7a99aa9e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/562998
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Multiple goroutines all writing to the same sink triggers the race detector,
rightfully so.
Change-Id: Ia64836d0d88c0f587a6cb96ed747f656a3c1804a
Reviewed-on: https://go-review.googlesource.com/c/go/+/562997
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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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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.
Fixes#65406
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Change-Id: I82f0c0e7bfcd5bb4df0195c4c8c7fc7c67fae53e
Reviewed-on: https://go-review.googlesource.com/c/go/+/561338
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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>
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The runtime currently enables long path support process-wide by updating
the process environment block (PEB). It then tries to create a file
using a long path to check if the PEB update made any difference.
There hasn't been any report that the PEB update was not effective,
and the check itself is quite tricky, so it's time to remove it.
While here, linkname `runtime.canUseLongPaths` to a variable in
internal/syscall/windows instead of the os package so it is easier to
consume from other packages.
Change-Id: I549380b7f2c242dc4db20d5be603840282de69b9
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This reverts commit 29746b4814.
Reason for revert: Windows builders are flaky since this CL. Needs investigation. See https://build.golang.org/log/70d5d039b57b505870c9cc4e61de320df06a6f3a.
Change-Id: I8a5874bb057785497d03b9450819578de7faeb47
Reviewed-on: https://go-review.googlesource.com/c/go/+/561276
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This CL improves the error messages reported when a field or method
name is used that doesn't exist. It brings the error messges on par
(or better) with the respective errors reported before Go 1.18 (i.e.
before switching to the new type checker):
Make case distinctions based on whether a field/method is exported
and how it is spelled. Factor out that logic into a new function
(lookupError) in a new file (errsupport.go), which is generated for
go/types. Use lookupError when reporting selector lookup errors
and missing struct field keys.
Add a comprehensive set of tests (lookup2.go) and spot tests for
the two cases brought up by the issue at hand.
Adjusted existing tests as needed.
Fixes#49736.
Change-Id: I2f439948dcd12f9bd1a258367862d8ff96e32305
Reviewed-on: https://go-review.googlesource.com/c/go/+/560055
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If we do know whether we need a type or not, make use of the
information when we know that we don't have a type and bail out.
Fixes the issue at hand and also improves some other error messages
which now report that we don't have a type instead of reporting a cycle.
For #65344.
Change-Id: I11182efd452c485d89e6c09ead8a647ea05d7318
Reviewed-on: https://go-review.googlesource.com/c/go/+/559335
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Currently the stop reason for runtime.Gosched is labeled
"runtime.GoSched" which doesn't actually match the function name. Fix
the label to match the function name.
This change doesn't regenerate the internal/trace/v2 tests, because
regenerating the tests breaks summarization tests in internal/trace that
rely on very specific details in the example traces that aren't
guaranteed. Also, go122-gc-trace.test isn't generated at all, as it
turns out. I'll fix this all up in a follow-up CL. For now, just replace
runtime.GoSched with runtime.Gosched in the traces so we don't have a
problem later if a test wants to look for that string.
This change does regenerate the cmd/trace/v2 test, but it turns out the
cmd/trace/v2 tests are way too strict about network unblock events, and
3 usually pop up instead of 1 or 2, which is what the test expects.
AFAICT this looks plausible to me, so just lift the restriction on
"up to 2" events entirely.
Change-Id: Id7350132be19119c743c259f2f5250903bf41a04
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It is currently not possible to distinguish between a netpollBreak
entry and an entry initiated by external WSA operations (as in #58870).
This CL sets a unique completion key when posting the
netpollBreak entry so that it can be identified as such.
Change-Id: I8e74a7ddc607dc215d6ed8c59d5c3cf47ec8dc62
Reviewed-on: https://go-review.googlesource.com/c/go/+/558895
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internal/profile.Parse is only used in two places: cmd/compile for
parsing PGO profiles, and net/http/pprof for parsing runtime/pprof
profiles for delta profiles. Neither case ever encounters legacy
profiles, so we can remove support entirely from the package.
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Change-Id: Ic5f85b3fc1e1367131b6039dac9378913cbf9f2c
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This feature makes it possible to record unhandled panics
in any goroutine through a watchdog process (e.g. the same
application forked+exec'd as a child in a special mode)
that can process the panic report, for example by sending
it to a crash-reporting system such as Go telemetry
or Sentry.
Fixes#42888
Change-Id: I5aa7be8f726bbc70fc650540bd1a14ab60c62ecb
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Found by codespell.
Change-Id: I2ebefbbbc8eacf9bc83051407519fa8fd5e4495f
GitHub-Last-Rev: 9cc550f3db
GitHub-Pull-Request: golang/go#65346
Reviewed-on: https://go-review.googlesource.com/c/go/+/559095
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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This change fixes an edge case in the zstd decompressor where
an int conversion could result in a negative window size.
Fixes#63979
For #62513
Change-Id: Ie714bf8fb51fa509b310deb8bd2c96bd87b52852
GitHub-Last-Rev: ab0be65782
GitHub-Pull-Request: golang/go#63980
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Rather than implementing a new, less complete mechanism to check
if a selector exists with different capitalization, use the
existing mechanism in lookupFieldOrMethodImpl by making it
available for internal use.
Pass foldCase parameter all the way trough to Object.sameId and
thus make it consistently available where Object.sameId is used.
From sameId, factor out samePkg functionality into stand-alone
predicate.
Do better case distinction when reporting an error for an undefined
selector expression.
Cleanup.
Change-Id: I7be3cecb4976a4dce3264c7e0c49a320c87101e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/558315
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GOEXPERIMENT=rangefunc still enables it for all Go modules.
Otherwise only enable in Go 1.23 source files.
More work remains but it will be done in follow-up issues.
Fixes#61405.
Change-Id: Icad64942deb152ee65444e4d7be289814a8a0b6b
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This change updates the testenv tests to correctly match on future LUCI
builder names for mobile builders. This isn't a problem today because
those haven't been set up yet, but the builder names are structured and
it's clear where the modifiers will appear. Might as well set them up
now.
Change-Id: I244b88a62a90312c0f3ff2360527d58531070362
Reviewed-on: https://go-review.googlesource.com/c/go/+/558597
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
testenv's TestHasGoBuild test is supposed to allow noopt builders to not
have go build, but the pattern match is failing on the LUCI builders
where a test shard might have an additional "-test_only" suffix in the
builder name. Furthermore, in the LUCI world, "run mods" (the builder
type suffixes) are supposed to be well-defined and composable, so it
doesn't make sense to restrict "-noopt" to the builder suffix anyway.
This change modifies the test to allow "-noopt" to appear anywhere in
the builder name when checking if it's running on a noopt builder.
Change-Id: I393818e3e8e452c7b0927cbc65726d552aa8ff8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/558596
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
In Checker.infer, report an error through an (incoming) *error_
so that the error can be reported as desired where infer is called.
Checker.infer is now a pure function.
Fixes#60543.
At call sites of Checker.infer, pass in an *error_ and use it to
report inference errors, together with additional information as
desired.
Fixes#60542.
In go/types, in error_.errorf, pass in a positioner rather than
a token.Pos. Also, introduce noposn, the positioner equivalent
for nopos. Adjust call sites as needed.
Change-Id: I462a7899a77a8bee2a21ba88299df237d74e0672
Reviewed-on: https://go-review.googlesource.com/c/go/+/558035
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
The variable represents the RISC-V user-mode application profile for
which to compile. Valid values are rva20u64 (the default) and
rva22u64.
Setting GORISCV64=rva20u64 defines the riscv64.rva20u64 build tag,
sets the internal variable buildcfg.GORISCV64 to 20 and defines the
macro GORISCV64_rva20u64 for use in assembly language code.
Setting GORISCV64=rva22u64 defines the riscv64.rva20u64 and
riscv64.rva22u64 build tags, sets the internal variable
buildcfg.GORISCV64 to 22 and defines the macro GORISCV64_rva22u64
for use in assembly language code.
This patch only provides a mechanism for the compiler and hand-coded
assembly language functions to take advantage of the RISC-V
extensions mandated by the application profiles. Further patches
will be required to get the compiler/assembler and assembly language
functions to actually generate and use these extensions.
Fixes#61476
Change-Id: I9195ae6ee71703cd2112160e89157ab63b8391af
Reviewed-on: https://go-review.googlesource.com/c/go/+/541135
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Wang Yaduo <wangyaduo@linux.alibaba.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: M Zhuo <mengzhuo1203@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Damien Neil
Michael Pratt
Andy Pan
Nicolas Hillegeer
Constantin Konstantinidis
Kir Kolyshkin
Robert Griesemer
Mauri de Souza Meneguzzo
qiulaidongfeng
Mateusz Poliwczak
Keith Randall
qmuntal
Ian Lance Taylor
Jes Cok
Nick Ripley
Michael Matloob
Dominik Honnef
Jun10ng
Michael Anthony Knyszek
Jin Lin
Alan Donovan
aimuz
Russ Cox
Joel Sing
Mark Ryan