Previously, the test could fail spuriously if the CGI process's PID
happened to be reused in between checks. That sort of reuse is highly
unlikely on platforms that cycle through the PID space sequentially
(such as Linux), but plausible on platforms that use randomized PIDs
(such as OpenBSD).
Also unskip the test on Windows, since it no longer relies on being
able to send signal 0 to an arbitrary PID.
Also change the expected failure mode of the test to a timeout instead
of a call to t.Fatalf, so that on failure we get a useful goroutine
dump for debugging instead of a non-actionable failure message.
Fixes#57369 (maybe).
Change-Id: Ib7e3fff556450b48cb5e6ea120fdf4d53547479b
Reviewed-on: https://go-review.googlesource.com/c/go/+/554075
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Reviewed-by: Damien Neil <dneil@google.com>
The order of emitting named type and type aliases in the `Walker`'s
`emitType` function is inverted. When the type alias references a basic
type, this causes a panic as the type assertion on `*types.Named` fails.
This change reorders the logic such that type aliases are emitted prior
to this type assertion.
Fixes#64958
Change-Id: I52dbe13999978912ded788d9cf4948103869bcfa
Reviewed-on: https://go-review.googlesource.com/c/go/+/554076
Reviewed-by: Bryan Mills <bcmills@google.com>
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Auto-Submit: Bryan Mills <bcmills@google.com>
due to a recent change, this experiment does not compile at all. This
simply fixes to pass in the new required parameter.
Change-Id: Idce0e72fa436a7acf4923717913deb3a37847fe2
Reviewed-on: https://go-review.googlesource.com/c/go/+/551415
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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This change fixes Request.Clone to correctly work with SetPathValue
by creating fresh copies for matches and otherValues so that
SetPathValue for cloned requests doesn't pollute the original request.
While here, also added a doc for Request.SetPathValue.
Fixes#64911
Change-Id: I2831b38e135935dfaea2b939bb9db554c75b65ef
GitHub-Last-Rev: 1981db1647
GitHub-Pull-Request: golang/go#64913
Reviewed-on: https://go-review.googlesource.com/c/go/+/553375
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Jes Cok <xigua67damn@gmail.com>
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Reviewed-by: Jonathan Amsterdam <jba@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Also, join three paragraphs that should have been one.
Change-Id: Ib1c252f88a1e98afe157d477caa5323c0c8365e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/553715
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Reviewed-by: Eli Bendersky <eliben@google.com>
The backing store for the scavengeIndex chunks slice is allocated on demand
as page allocation occurs. When pageAlloc.grow is called, a range is
allocated from a reserved region, before scavengeIndex.grow is called
to ensure that the chunks needed to manage this new range have a valid
backing store. The valid region for chunks is recorded as the index min
and index max. Any changes need to take the existing valid range into
consideration and ensure that a contiguous valid range is maintained.
However, a bug in the min index handling can currently lead to an existing
part of the chunk slice backing store being zeroed via remapping. Initially,
there is no backing store allocated and both min and max are zero. As soon
as an allocation occurs max will be non-zero, however it is still valid for
min to be zero depending on the base addresses of the page allocations. A
sequence like the following will trigger the bug:
1. A page allocation occurs requiring chunks [0, 512) (after rounding) - a
sysMap occurs for the backing store, min is set to 0 and max is set
to 512.
2. A page allocation occurs requiring chunks [512, 1024) - another sysMap
occurs for this part of the backing store, max is set to 1024, however
min is incorrectly set to 512, since haveMin == 0 (validly).
3. Another page allocation occurs requiring chunks [0, 512) - since min is
currently 512 a sysMap occurs for the already mapped and inuse part
of the backing store from [0, 512), zeroing the chunk data.
Correct this by only updating min when either haveMax == 0 (the
uninitialised case) or when needMin < haveMin (the case where the new
backing store range is actually below the current allocation). Remove
the unnecessary haveMax == 0 check for updating max, as the existing
needMax > haveMax case already covers this.
Fixes#63385
Change-Id: I9deed74c4ffa187c98286fe7110e5d735e81f35f
Reviewed-on: https://go-review.googlesource.com/c/go/+/553135
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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Run-TryBot: Joel Sing <joel@sing.id.au>
There is no 'of' relationships between float and string. This points to those interfaces with internal type float or string.
Change-Id: I14449f00c192e0d3f8270b433ff508978b7fdf17
GitHub-Last-Rev: f301a8aa52
GitHub-Pull-Request: golang/go#64885
Reviewed-on: https://go-review.googlesource.com/c/go/+/552957
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
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Run-TryBot: Jorropo <jorropo.pgm@gmail.com>
Follow-up on CL 551095.
For #56010.
Change-Id: I8913d6ca96c419c81683e88c6286b05ae1323416
Reviewed-on: https://go-review.googlesource.com/c/go/+/552915
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
For #56010.
Change-Id: Icca987a03d80587dd0e901f596ff7788584893ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/551095
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Add a new section to the Appendix describing what features were
changed or added in which language version.
Add short links with references to the required language version
where relevant.
Fixes#63857.
Change-Id: I5250f856d8688a71602076fcc662aa678d96a5d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/549518
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
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Reviewed-by: Alan Donovan <adonovan@google.com>
Commit generated by update.bash.
For #22487.
Change-Id: I4c8a275bb607981c21a0ad5e49b3cae968fc8e64
Reviewed-on: https://go-review.googlesource.com/c/go/+/552575
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fix rendering of link to runtime/debug.ReadGCStats in package overview:
as the package is not imported we must specify the absolute package
name.
Change-Id: I123db49eee05e6812427e19873e628b4e4feb203
Reviewed-on: https://go-review.googlesource.com/c/go/+/549735
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Found by codespell.
Change-Id: I38254f75a8d342a48bbaf6421c681bef7a262dec
Reviewed-on: https://go-review.googlesource.com/c/go/+/551955
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Jes Cok <xigua67damn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
CL 549796 adds race annotations to godebugInc. It uses racerelease
to model a CompareAndSwap. However, a CompareAndSwap is
essentially a load and a store. Modeling it as just racerelease
makes it not synchronized with other racerelease, i.e. other CAS.
For the following execution
thread A B
load, got nil
load, got nil
set *inc
set *inc
racerelease
CAS success
racerelease
CAS fail
load
raceacquire
use *inc (from A)
On thread B, the raceacquire synchronizes with the previous
racerelease, which is not synchronized with racerelease on thread
A, so it doesn't know that the use of *inc on thread B is after
the set on thread A, and will report a race.
Change it to use racereleasemerge, which synchronizes with
previous racerelease and racereleasemerge. So in the case above it
knows thread B's CAS is after thread A's.
Also remove stale comment that was more relevant when the code
used atomic store, where CL 549796 changed to CAS.
Updates #64649.
Change-Id: I17671090a19c0699fcb4e6481e2abd98ef2e5542
Reviewed-on: https://go-review.googlesource.com/c/go/+/551856
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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The input index to a jump table can be out of range for unreachable code.
Dynamically the compiler ensures that an out-of-range index can never
reach a jump table, but that guarantee doesn't extend to the static
realm.
Fixes#64826
Change-Id: I5829f3933ae5124ffad8337dfd7dd75e67a8ec33
Reviewed-on: https://go-review.googlesource.com/c/go/+/552055
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: David Chase <drchase@google.com>
cmd/vet no longer reports loopclosure bugs within files built at
GoVersion>=1.22.
For #61422.
Change-Id: I6f29373bb236822ece4e7ae35914859538b8d57b
Reviewed-on: https://go-review.googlesource.com/c/go/+/551376
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The valid conversions consider the core types of operands, not just
their underlying type.
This also explains the valid arguments for unsafe.Slice which are
explained in terms of unsafe.Pointer conversions.
unsafe.SliceData simply refers to "slice argument" and we use
similar terminology elsewhere in the spec to denote values that
have a core type of slice (or any other type for that matter).
Leaving alone for now.
Fixes#64452.
Change-Id: I0eed3abbc0606f22358835e5d434f026fe0909c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/551379
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
This patch comments out the remaining "TODO" items in the Go 1.22
release notes temporarily, so as to have RC1 go out with the notes
in a clean (TODO-less) state.
Change-Id: I88f5fef75860fc78b8077dce704ae71c6194a6a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/551257
Reviewed-by: Carlos Amedee <carlos@golang.org>
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This support was removed in CL 518776.
For #61422.
Fixes#53327.
Change-Id: I8ad0f76aed5f03e32c4c2c5c0001c3f06beb3c7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/548877
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
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For #61422.
Updates #60915.
Change-Id: Ia8ca12c163a02223b26c5e4cd4c1b6093978aba4
Reviewed-on: https://go-review.googlesource.com/c/go/+/548875
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
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This caused other problems, and for the purposes of the Go 1.22
release, we can just roll back to the Go 1.21 behavior and then
decide in January what the correct path forward is.
Revert of CL 546635.
Unfixes #64282.
Fixes#64738.
For #57001.
This reverts commit e44b8b15b1.
Change-Id: I78753c76dcd0bc6dbc90caa17f73248c42e5f64a
Reviewed-on: https://go-review.googlesource.com/c/go/+/551215
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Reviewed-by: Than McIntosh <thanm@google.com>
Per the discussion on the issue, since no problems related to this
appeared since Go 1.20, remove the ability to disable the check for
anonymous interface cycles permanently.
Adjust various tests accordingly.
For #56103.
Change-Id: Ica2b28752dca08934bbbc163a9b062ae1eb2a834
Reviewed-on: https://go-review.googlesource.com/c/go/+/550896
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Add a skip for this test that effectively disables it for 32-bit platforms,
so as to not run into timeouts or OOMs on smaller machines.
Fixes#64789.
Change-Id: I2d428e1dccae62b8bb1a69c5f95699692a282bbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/550975
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Also, add EVP_aead_aes_*_gcm_tls13 to the build, which we will need in a
following CL, to avoid rebuilding the syso twice.
Updates #64717
Updates #62372
Change-Id: Ie4d853ad9b914c1095cad60694a1ae6f77dc22ce
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-boringcrypto
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This reverts commit https://go.dev/cl/c/go/+/549297
Reason for revert: breaks clang builder
Change-Id: I2321dec9bc1fc20dfafa8a984303b0b5710f8aac
Reviewed-on: https://go-review.googlesource.com/c/go/+/550779
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
go get golang.org/x/tools@83bceaf2 # CL 550395
go mod tidy
go mod vendor
Fixes#64786
Change-Id: Ia9879975eb3e8e4130ded7b2d8ba1277b5811eec
Reviewed-on: https://go-review.googlesource.com/c/go/+/550895
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The @feat.00 comment is outdated, as Go does support SEH on
windows/amd64. While here, simplify it and add a link to the
relevant documentation.
Change-Id: I6e3c786ca4f4809baf46015edf569d06b12f1239
Reviewed-on: https://go-review.googlesource.com/c/go/+/550635
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As of CL 461956 `recover` will not return `nil` if `panic` is called with `nil`. I have updated comments of `recover` to account for this change.
Change-Id: Ibd0b27fe9b89fb29349b62ad34e762239a1d165b
GitHub-Last-Rev: c773abb75c
GitHub-Pull-Request: golang/go#64393
Reviewed-on: https://go-review.googlesource.com/c/go/+/544975
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Clang 16 introduced a more aggressive behavior regarding uninitialized
memory in the memory sanitizer.
The new option -fsanitize-memory-param-retval is enabled by default
and makes the test msan8 fail, since it uses an
uninitialized variable on purpose.
Disable this behavior if we are running with clang 16+.
Fixes#64616
Change-Id: If366f978bef984ea73f6ae958f24c8fce99b59fe
GitHub-Last-Rev: 60bd64a8fb
GitHub-Pull-Request: golang/go#64691
Reviewed-on: https://go-review.googlesource.com/c/go/+/549297
Auto-Submit: Bryan Mills <bcmills@google.com>
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Also fix its call site in internal/poll to pass the length of the
actual buffer instead of an unrelated variable, and update the
definition of FILE_BASIC_INFO to match the documented field types
and add padding that is empirically needed on the 386 architecture.
Passing a pointer to a Go-allocated buffer as type uintptr violates
the unsafe.Pointer conversion rules, which allow such a conversion
only in the call expression itself for a call to syscall.Syscall or
equivalent. That can allow the buffer to be corrupted arbitrarily if
the Go runtime happens to garbage-collect it while the call to
SetFileInformationByHandle is in progress.
The Microsoft documentation for SetFileInformationByHandle specifies
its third argument type as LPVOID, which corresponds to Go's
unsafe.Pointer, not uintptr.
Fixes#58933 (maybe).
Change-Id: If577b57adea9922f5fcca55e46030c703d8f035c
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This test was added to check new mutex profile functionality.
Specifically, it checks to make sure that the functionality behind
GODEBUG=runtimecontentionstacks works. The runtime currently tracks
contention from runtime-internal mutexes in mutex profiles, but it does
not record stack traces for them, attributing the time to a dummy
symbol. This GODEBUG enables collecting stacks.
Just disable the test. Even if this functionality breaks, it won't
affect Go users and it'll help keep the builders green. It's fine to
leave the test because this will be revisited in the next dev cycle.
For #64253.
Change-Id: I7938fe0f036fc4e4a0764f030e691e312ec2c9b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/550775
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Auto-Submit: Michael Knyszek <mknyszek@google.com>
Currently, lock ranking doesn't really try to model rwmutex. It records
the internal locks rLock and wLock, but in a subpar fashion:
1. wLock is held from lock to unlock, so it works OK, but it conflates
write locks of all rwmutexes as rwmutexW, rather than allowing
different rwmutexes to have different rankings.
2. rLock is an internal implementation detail that is only taken when
there is contention in rlock. As as result, the reader lock path is
almost never checked.
Add proper modeling. rwmutexR and rwmutexW remain as the ranks of the
internal locks, which have their own ordering. The new init method is
passed the ranks of the higher level lock that this represents, just
like lockInit for mutex.
execW ordered before MALLOC captures the case from #64722. i.e., there
can be allocation between BeforeFork and AfterFork.
For #64722.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-staticlockranking
Change-Id: I23335b28faa42fb04f1bc9da02fdf54d1616cd28
Reviewed-on: https://go-review.googlesource.com/c/go/+/549536
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Right shift by 0 has bad semantics. Make sure if we try to right shift by 0,
do a left shift by 0 instead.
CL 549955 handled full instructions with this strange no-op encoding.
This CL handles the shift done to instruction register inputs.
(The former is implemented using the latter, but not until deep
inside the assembler.)
Update #64715
Change-Id: Ibfabb4b13e2595551e58b977162fe005aaaa0ad1
Reviewed-on: https://go-review.googlesource.com/c/go/+/550335
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Reviewed-by: Keith Randall <khr@google.com>
Also use CompareAndSwap to make the code actually less racy.
Added a test which will be meaningful when run under the race
detector (tested it -race with broken fix in runtime, it failed).
Fixes#64649
Change-Id: I5972e08901d1adc8ba74858edad7eba91be1b0ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/549796
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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Right shifts, for some odd reasons, can encode shifts of constant
1-32 instead of 0-31. Left shifts, however, can encode shifts 0-31.
When the shift amount is 0, arm recommends encoding right shifts
using left shifts.
Fixes#64715
Change-Id: Id3825349aa7195028037893dfe01fa0e405eaa51
Reviewed-on: https://go-review.googlesource.com/c/go/+/549955
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
API questions remain, so we decided to back it out for Go 1.22.
Code still lives in the repo, just unexported.
For #61642.
Change-Id: Iccd91b0da48ae72dec9f660476826a220c7ca4be
Reviewed-on: https://go-review.googlesource.com/c/go/+/549615
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Anderson <dave@natulte.net>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
When the argument to 'go install' or 'go run' looks like a versioned
package, we make a best effort to switch to a toolchain compatible
with the module containing that package, by fetching its go.mod file
and checking the go version it specifies.
At this point in the code, we have not yet parsed the arguments given
on the command line: instead, we just make a best effort to find one
we can use to select a toolchain version. Since that toolchain may be
newer, the command to install it may also include flags that are only
supported by that Go version — and we don't want to fail due to an
error that would be resolved by switching to a more appropriate
toolchain.
So at this point in the code we can't parse the flags in a way that
will surface errors, but we want to make a best effort to parse the
ones that we know about. It turns out that “parse the flags we know
about” is already a familiar problem: that's also what we do in
'go test', so we can reuse the cmdflag library from that to do the
best-effort pass of parsing.
If it turns out that we don't need to switch toolchains after all,
cmd/go's main function will parse the flags again, and will report any
errors at that point.
This fixes a regression, introduced in CL 497879, which caused
'go install -modcacherw pkg@version' to unset the write bit for
directories created while selecting the toolchain to use.
Fixes#64282.
Updates #57001.
Change-Id: Icc409c57858aa15c7d58a97a61964b4bc2560547
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/546635
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
In gitRepo.stat, we were checking ref != "" twice,
which confused me during casual reading because it made it seem like
the string could be empty when it actually never is.
For #56881.
Change-Id: Ib83303a149ea771399cb55fedd5dfa02ad411ff0
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/549855
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
This works around a bug in 'git http-backend' that was fixed in
Git 2.34.0,¹ and will hopefully allow the tests in
cmd/go/internal/modfetch/codehost to pass reliably using older
Git releases (I tested with 2.30.2).
¹ff6a37c99eFixes#56881.
Change-Id: Icd2e4d252d5f712685d146f34e11922dd0c41ff0
Reviewed-on: https://go-review.googlesource.com/c/go/+/549795
Reviewed-by: Michael Matloob <matloob@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
For #58808
Change-Id: I9b27af30888aaaa9659387a32c57aaea136b1c3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/549335
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
