We used to decrement it in netpollgoready, but that missed
the common case of a descriptor becoming ready due to I/O.
All calls to netpollgoready go through netpollunblock,
so this shouldn't miss any decrements we missed before.
Fixes#60782
Change-Id: Ideefefa1ac96ca38e09fe2dd5d595c5dd7883237
Reviewed-on: https://go-review.googlesource.com/c/go/+/503923
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Relnote (golang.org/x/build/cmd/relnote) was run again. Some of the
simpler entries were resolved. TODO's remain for other entries.
For #58645
Change-Id: I0acb5e87b2e9655ffd472e728259a4aa6c4da50e
Reviewed-on: https://go-review.googlesource.com/c/go/+/510375
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
It is conventional to use `err` for error variables, so change the example to use `err` instead of `e`.
Change-Id: I53bc3c5384fe608b322a55c564e9aee228b43329
GitHub-Last-Rev: 3e2ed84eef
GitHub-Pull-Request: golang/go#61375
Reviewed-on: https://go-review.googlesource.com/c/go/+/510075
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Rob Pike <r@golang.org>
Reviewed-by: Allen Li <ayatane@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
As described in #61249, uncommon pointer sizes do exist. Remove an
unnecessary assertion.
Fixes#61249
Change-Id: Ib15857bd6bcd42ec530817a132bb8db036236c3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/508821
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Sin/Tan are odd, Cos is even, so it is easy to compute the correct
result from the positive argument case.
Change-Id: If851d00fc7f515ece8199cf56d21186ced51e94f
Reviewed-on: https://go-review.googlesource.com/c/go/+/509815
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Srinivas Pokala <Pokala.Srinivas@ibm.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Tested locally by changing GOROOT/go.env. At some point perhaps we
should also set up a builder that runs with some common expected
modifications to go.env
(such as GOTOOLCHAIN=local GOPROXY=direct GOSUMDB=off).
Fixes#61358.
Updates #61359.
Change-Id: I365ec536bec86370e302fb726fa897400ab42cf3
Reviewed-on: https://go-review.googlesource.com/c/go/+/509637
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
This causes instances commonHandler created by withAttrs or withGroup to
share a mutex with their parent preventing concurrent writes to their
shared writer.
Fixes#61321
Change-Id: Ieec225e88ad51c84b41bad6c409fac48c90320b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/509196
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Due to an errant newline, both 'go doc' and pkg.go.dev currently
interpret the long comment in cmd/covdata/doc.go as a file comment
instead of package documentation.
Removing the errant newline caused 'go doc' to render the comment, but
it does not strip out the interior '//' tokens from the '/* … */'
block.
Removing those tokens and fixing up indentation seems to give
satisfactory rendering.
Change-Id: I5757c649e7380b026f7d8d1b6fd3cb6dddfb27ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/509635
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
TestCompareBytes already took into account the -short
testing flag, however, only if not run on one of the Go builders.
This extra condition is no longer necessary as we have much
better longtest coverage than we did when the check was added.
Fixes#61071
Change-Id: I0fc716f4e7baa04019ee00608f223f27c931edcc
Reviewed-on: https://go-review.googlesource.com/c/go/+/507416
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Bypass: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
h2_bundle.go is generated from x/net/http2, so it must not be edited
manually.
Change-Id: If76716ce8baf581321358734e5b8bef3541632ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/508922
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Change-Id: I3302b94a47f384ec2519d08af50b3b5725c5b42a
Reviewed-on: https://go-review.googlesource.com/c/go/+/508995
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: I5f06a4ef1d827eb0fe32a8d98444142108b0d573
Reviewed-on: https://go-review.googlesource.com/c/go/+/508996
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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>
The call from toolchain.Select to gover.FromToolchain was passing the
wrong argument but this was masked by gover.IsValid being a little bit
too lax.
Fix and test IsValid, which then breaks the existing gotoolchain_local
test, and then fix toolchain.Select to fix the test.
Fixes#61068.
Change-Id: I505ceb227457d6a51bd5e47f009b2fb1010c0d1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/508820
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
(ANDCCconst [y] (MOV.*reg x)) should only be merged when zero
extending. Otherwise, sign bits are lost on negative values.
(ANDCCconst [0xFF] (MOVBreg x)) should be simplified to a zero
extension of x. Likewise for the MOVHreg variant.
Fixes#61297
Change-Id: I04e4fd7dc6a826e870681f37506620d48393698b
Reviewed-on: https://go-review.googlesource.com/c/go/+/508775
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Update the README to specify the module query "@master" instead of
"@latest".
Vendoring the highest tagged version is unlikely to be right. Usually
one wants to vendor the module at HEAD.
Change-Id: Id00d23523a13fd3dcd73d6eacefdf50bcdbfa26e
Reviewed-on: https://go-review.googlesource.com/c/go/+/508823
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
As #61067 pointed out, slog did not properly handle empty groups.
https://go.dev/cl/508436 dealt with most cases inside slog itself,
but handlers must still do a check on their own. Namely, a handler
must not output a group created by WithGroup unless the Record
has attributes.
This change adds a test to slogtest to check that case.
Fixes#61227.
Change-Id: Ibc065b6e5f6e199a41bce8332ea8c7f9d8373392
Reviewed-on: https://go-review.googlesource.com/c/go/+/508438
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Also fix a (minor) double-Close error in Serve that was exposed by the
test fix.
Serve accepts a net.Listener, which produces net.Conn instances.
The documentation for net.Conn requires its methods to be safe for
concurrent use, so most implementations likely allow Close to be
called multiple times as a side effect of making it safe to call
concurrently with other methods. However, the net.Conn interface is a
superset of the io.Closer interface, io.Closer explicitly leaves the
behavior of multiple Close calls undefined, and net.Conn does not
explicitly document a stricter requirement.
Perhaps more importantly, the test for the fcgi package calls
unexported functions that accept an io.ReadWriteCloser (not a
net.Conn), and at least one of the test-helper ReadWriteCloser
implementations expects Close to be called only once.
The goroutine leaks were exposed by a racy arbitrary timeout reported
in #61271. Fixing the goroutine leak exposed the double-Close error:
one of the leaked goroutines was blocked on reading from an unclosed
pipe. Closing the pipe (to unblock the goroutine) triggered the second
Close call.
Fixes#61271.
Change-Id: I5cfac8870e4bb4f13adeee48910d165dbd4b76fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/508815
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
We cancel the Context to unblock the test as soon as all of the "exit"
processes have completed. If that happens to occur before all of the
"hang" processes have started, the Start calls may fail with
context.Canceled.
Since those errors are possible in normal operation of the test,
ignore them.
Fixes#61277.
Updates #61080.
Change-Id: I20db083ec89ca88eb085ceb2892b9f87f83705ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/508755
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Passing nil for a context is discouraged. We should avoid it.
Fixes#61219.
Change-Id: I664387070aacb56af580b6b0791ca40982d2a711
Reviewed-on: https://go-review.googlesource.com/c/go/+/508437
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
The previous upper bound was around 0.375 s, which is empirically
too short on a slow, heavily-loaded builder. Since the test doesn't
seem to depend on the actual duration in any meaningful way, let's
make it several orders of magnitude larger.
Fixes#61266.
Change-Id: I6dde5e174966ee385db67e3cb87334f463c7e597
Reviewed-on: https://go-review.googlesource.com/c/go/+/508695
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
When adding MPTCP support to address the proposal #56539, I missed the
GODEBUG setting from Russ Cox's plan:
I am inclined to say that we add MPTCP as an opt-in for a release or
two, and then make it opt-out. There should be a GODEBUG setting (...)
See: https://github.com/golang/go/issues/56539#issuecomment-1309294637
Thanks to andrius4669 for having reported this issue to me.
It makes sense to have this GODEBUG setting not to have to modify
applications to use MPTCP (if available). It can then be useful to
estimate the impact in case we want to switch from opt-in to opt-out
later.
The MPTCP E2E test has been modified to make sure we can enable MPTCP
either via the source code like it was already the case before or with
this environment variable:
GODEBUG=multipathtcp=1
The documentation has been adapted accordingly.
I don't know if it is too late for Go 1.21 but I had to put a version in
the documentation. The modification is small, the risk seems low and
this was supposed to be there from the beginning according to Russ Cox's
specifications. It can also be backported or only be present in the
future v1.22 if it is easier.
Note: I didn't re-open #56539 or open a new one. It is not clear to me
what I should do in this case.
Fixes#56539
Change-Id: I9201f4dc0b99e3643075a34c7032a95528c48fa0
Reviewed-on: https://go-review.googlesource.com/c/go/+/507375
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
In CL 421441, we changed syscall to allow concurrent calls to
forkExec.
On platforms that support the pipe2 syscall that is the right
behavior, because pipe2 atomically opens the pipe with CLOEXEC already
set.
However, on platforms that do not support pipe2 (currently aix and
darwin), syscall.forkExecPipe is not atomic, and the pipes do not
initially have CLOEXEC set. If two calls to forkExec proceed
concurrently, a pipe intended for one child process can be
accidentally inherited by the other. If the process is long-lived, the
pipe can be held open unexpectedly and prevent the parent process from
reaching EOF reading the child's status from the pipe.
Fixes#61080.
Updates #23558.
Updates #54162.
Change-Id: I83edcc80674ff267a39d06260c5697c654ff5a4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/507355
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
User code is unlikely to be correct, but don't crash the compiler
when the offset of a pointer in an object is not a multiple of the
pointer size.
Fixes#61187
Change-Id: Ie56bfcb38556c5dd6f702ae4ec1d4534c6acd420
Reviewed-on: https://go-review.googlesource.com/c/go/+/508555
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
GetFileInformationByHandleEx can return `ERROR_FILE_NOT_FOUND` when no
files were found in a root directory, as per MS-FSA 2.1.5.6.3 [1].
This error code should not be treated as an error, but rather as an
indication that no files were found, in which case `readdir` should
return an empty slice.
This CL doesn't add any test as it is difficult to trigger this error
code. Empty root directories created using Windows utilities such as
`net use` always report at least the optional `.` and `..` entries.
A reproducer is provided in #61159, but it requires WinFSP to be
installed.
Fixes#61159
[1] https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fsa/fa8194e0-53ec-413b-8315-e8fa85396fd8
Change-Id: Id46452030f5355c292e5b0abbf5e22af434a84d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/507775
Reviewed-by: Nick Craig-Wood <nickcw@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run gofmt on a source file.
Change-Id: I180d5cc7425fc5d8e9cf63005ac692f361beb1ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/508497
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Eli Bendersky <eliben@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
CL 507975 resulted in new data races (as reported in #61212), because
the pkg argument to NewChecker was mutated.
Fix this by deferring the recording of the goVersion in pkg until type
checking is actually initiated via a call to Checker.Files.
Additionally, modify types2/check.go to bring it in sync with the
changes in go/types/check.go, and generate the new version_test.go from
the types2 file.
Also move parsing the version into checkFiles, for simplicity.
Fixes#61212
Change-Id: I15edb6c2cff3085622fe7c6a3b0dab531d27bd04
Reviewed-on: https://go-review.googlesource.com/c/go/+/508439
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
Adds a test that triggers the RISC-V fused multiply-add code
generation bug fixed by CL 506575.
Change-Id: Ia3a55a68b48c5cc6beac4e5235975dea31f3faf2
Reviewed-on: https://go-review.googlesource.com/c/go/+/507035
Auto-Submit: M Zhuo <mzh@golangcn.org>
Reviewed-by: M Zhuo <mzh@golangcn.org>
Run-TryBot: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Handlers should not display empty groups.
A group with no attributes is certainly empty. But we also want to
consider a group to be empty if all its attributes are empty groups.
The built-in handlers did not handle this second case properly.
This CL fixes that.
There are two places in the implementation that we need to consider.
For Values of KindGroup, we change the GroupValue constructor to omit
Attrs that are empty groups. A Group is then empty if and only if it
has no Attrs. This avoids a recursive check for emptiness.
It does require allocation, but that doesn't worry us because Group
values should be relatively rare.
For groups established by WithGroup, we avoid opening such groups
unless the Record contains non-empty groups. As we did for values, we
avoid adding empty groups to records in the first place, so we only
need to check that the record has at least one Attr.
We are doing extra work, so we need to make sure we aren't slowing
things down unduly. Benchmarks before and after this change show
minimal differences.
Fixes#61067.
Change-Id: I684c7ca834bbf69210516faecae04ee548846fb7
Reviewed-on: https://go-review.googlesource.com/c/go/+/508436
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
When building programs to GOOS=wasip1, the program does not have the
guarantees that the underlying directories will come from a file system
where a zero inode value indicates that the entry was deleted but not
yet removed from the directory. The host runtime may be running on
windows or may be exposing virtual user-space file systems that do not
have the concept of inodes. In those setup, we assume that the host
runtime is in charge of dealing with edge cases such as skipping
directory entries with zero inodes when needed, and the guest
application should trust the list of entries that it sees;
therefore, we disable skipping over zero inodes on wasip1.
Change-Id: I99aa562441cdb4182965f270af054cf3cf7f8f20
Reviewed-on: https://go-review.googlesource.com/c/go/+/507915
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
If running testprog fails, print the output.
For #60901.
Change-Id: Iee80fb09412ce13bae6ac3589779a8cdf7761765
Reviewed-on: https://go-review.googlesource.com/c/go/+/507978
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
We were building it for Windows, although Windows code never calls
any of these functions. When using -tags netgo that cause a multiple
definition of cgoAvailable.
Fixes#61153
Change-Id: Ib9e1de7720a8c0dacd6f12002917bf305dfa5405
Reviewed-on: https://go-review.googlesource.com/c/go/+/507655
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
When invoking a vet tool with -vettool (or vet itself),
we need to pass the package's GoVersion to use when
analyzing the package.
The test of this behavior is in the x/tools/go/analysis CL 507880.
For #61176.
Change-Id: I3b5a90fcd19a0adc7fb29366e106e18f722fc061
Reviewed-on: https://go-review.googlesource.com/c/go/+/507976
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Clients of go/types, such as analyzers, may need to know which
specific Go version a package is written for. Record that information
in the Package and expose it using the new GoVersion method.
Update parseGoVersion to handle the new Go versions that may
be passed around starting in Go 1.21.0: versions like "go1.21.0"
and "go1.21rc2". This is not strictly necessary today, but it adds some
valuable future-proofing.
While we are here, change NewChecker from panicking on invalid
version to saving an error for returning later from Files.
Go versions are now likely to be coming from a variety of sources,
not just hard-coded in calls to NewChecker, making a panic
inappropriate.
For #61174.
Fixes#61175.
Change-Id: Ibe41fe207c1b6e71064b1fe448ac55776089c541
Reviewed-on: https://go-review.googlesource.com/c/go/+/507975
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Adds an optional close quote in the expected log message regex for TestConnections to prevent failing when the source filepath is surrounded in quotes due to it containing one or more spaces.
Fixes#61161
Change-Id: I0dd71fb4389bff963bbfdc668ef4e4dfe787eafc
Reviewed-on: https://go-review.googlesource.com/c/go/+/508055
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
According to RISCV manual 11.6:
FMADD x,y,z computes x*y+z and
FNMADD x,y,z => -x*y-z
FMSUB x,y,z => x*y-z
FNMSUB x,y,z => -x*y+z respectively
However our implement of SSA convert FMADD -x,y,z to FNMADD x,y,z which
is wrong and should be convert to FNMSUB according to manual.
Change-Id: Ib297bc83824e121fd7dda171ed56ea9694a4e575
Reviewed-on: https://go-review.googlesource.com/c/go/+/506575
Run-TryBot: M Zhuo <mzh@golangcn.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
When x*y == -z the portable implementation of FMA copied the sign
bit from x*y into the result. This meant that when x*y == -z and
x*y < 0 the result was -0 which is incorrect.
Fixes#61130.
Change-Id: Ib93a568b7bdb9031e2aedfa1bdfa9bddde90851d
Reviewed-on: https://go-review.googlesource.com/c/go/+/507376
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joedian Reid <joedian@golang.org>
CL 497675 modified Rows such that context errors are propagated through
Rows.Err(). This caused an issue where calling Close meant that an
internal cancellation error would (eventually) be returned from Err:
1. A caller makes a query using a cancellable context.
2. initContextClose sees that either the query context or the
transaction context can be canceled, so will need to spawn a
goroutine to capture their errors.
3. initContextClose derives a context from the query context via
WithCancel and sets rs.cancel.
4. When a user calls Close, rs.cancel is called. awaitDone's ctx is
cancelled, which is good, since we don't want it to hang forever.
5. This internal cancellation (after CL 497675) has its error saved on
contextDone.
6. Later, calling Err will return the error in contextDone if present.
This leads to a race condition depending on how quickly Err is called
after Close.
The docs for Close and Err state that calling Close should have no
affect on the return result for Err. So, a potential fix is to ensure
that awaitDone does not save the error when the cancellation comes from
a Close via rs.cancel.
This CL does that, using a new context not derived from the query
context, whose error is ignored as the query context's error used to be
before the original bugfix.
The included test fails before the CL, and passes afterward.
Fixes#60932
Change-Id: I2bf4c549efd83d62b86e298c9c45ebd06a3ad89a
Reviewed-on: https://go-review.googlesource.com/c/go/+/505397
Auto-Submit: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
There are some subtle details here about measuring OS stacks in cgo
programs. There's also an expectation about magnitude in the MemStats
docs that isn't in the runtime/metrics docs. Fix both.
Fixes#54396.
Change-Id: I6b60a62a4a304e6688e7ab4d511d66193fc25321
Reviewed-on: https://go-review.googlesource.com/c/go/+/502156
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
This gives the user a better stack trace experience. No need to
expose them to runtime.systemstack and friends.
Fixes#61158
Change-Id: I4f423f82e54b062773067c0ae64622e37cb3948b
Reviewed-on: https://go-review.googlesource.com/c/go/+/507755
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Change-Id: I185dec133599f9c69fda7563697bbc33e433fb78
Reviewed-on: https://go-review.googlesource.com/c/go/+/507135
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
