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
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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
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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>
For #61422.
Change-Id: Icc1868ef9516766d0f422849866ef8de27bfa4c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/549275
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is aimed at improving the readability and consistency
of the code base. Extraneous newline characters were present after
some return statements, creating unnecessary separation in the code.
Fixes#64610
Change-Id: Ic1b05bf11761c4dff22691c2f1c3755f66d341f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/548316
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
For #64207.
For #23011.
Change-Id: I17ff221718aef03e9cda0ae4eb7b79896933553a
Reviewed-on: https://go-review.googlesource.com/c/go/+/549655
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Add some material to the "compiler" portion of the release
notes describing the 1.22 changes to the inliner.
For #61422.
Updates #61502.
Change-Id: Ic7f1cb7f70752446d2465ea3da6bd7488436342b
Reviewed-on: https://go-review.googlesource.com/c/go/+/549395
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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When generic function[a,b] is inlined to the same generic function[b,a]
with different types (not recursion) it is expected to get a pprof with
a single Location with two functions. However due to incorrect check
for generics names using runtime.Frame.Function, the profileBuilder
assumes it is a recursion and emits separate Location.
This change fixes the recursion check for generics functions by using
runtime_expandFinalInlineFrame
Fixes#64641
Change-Id: I3f58818f08ee322b281daa377fa421555ad328c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/549135
Run-TryBot: Michael Pratt <mpratt@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
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Change-Id: I4cf7efc8e704d41ee2e3743f6aa712cc46dd1fe9
Reviewed-on: https://go-review.googlesource.com/c/go/+/549515
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Change lookupMethod such that "foldCase" means "ignore case
and package" and analyze a lookup result further to determine
if a method name was not exported, and report a better error
message in that case.
Fixes#59831.
Change-Id: Ice6222e1fc00dba13caeda6c48971e8473d12da5
Reviewed-on: https://go-review.googlesource.com/c/go/+/549298
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Pull2 tests are failing with -race, giving false-positive race conditions
due to bad race instrumentation.
No tests for this as it should be caught by the race builders. The only
reason it was not caught is because it is behind GOEXPERIMENT=rangefunc.
Fixes#64651
Change-Id: I20554da930b0e19594e0e267f01a1e7a9cbc577a
GitHub-Last-Rev: 7c1f19238d
GitHub-Pull-Request: golang/go#64653
Reviewed-on: https://go-review.googlesource.com/c/go/+/548895
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This is a partial fix for situations where a method lookup leads to
an error due to non-matching signatures, but where the signatures
print exactly the same. This can happen if both signatures contain
type parameters (after instantiation) and the type parameters have
the same name (such as "T").
For now, rather than printing a confusing error message in this
case, leave away the confusing part of the error message (at the
cost of providing slightly less information).
In the long run, we need to find a better solution for this problem;
but this seems better than what we had before.
For #61685.
Change-Id: I259183f08b9db400ffc8e1cf447967c640a0f444
Reviewed-on: https://go-review.googlesource.com/c/go/+/549296
Reviewed-by: Robert Griesemer <gri@google.com>
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Auto-Submit: Robert Griesemer <gri@google.com>
Fixes the gating of TestIssue51759 by shelling out to sw_vers to check
what version of macOS we are on.
Fixes#64677
Change-Id: I5eef4fa39e5449e7b2aa73864625c3abf002aef8
Reviewed-on: https://go-review.googlesource.com/c/go/+/549195
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
For #51971
For #61679
Change-Id: Ie7b44201a9c40f5563c6d6051d22ae807ad0480d
Reviewed-on: https://go-review.googlesource.com/c/go/+/549198
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Reviewed-by: Roland Shoemaker <roland@golang.org>
For #58808
Change-Id: Id73b9e4b5fb96426a01b76ce7a1053a6ad61a58e
Reviewed-on: https://go-review.googlesource.com/c/go/+/549197
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Auto-Submit: Damien Neil <dneil@google.com>
For #50951.
For #61422.
Change-Id: Ib9038a00de8f4d8606443e9acd414402023cde63
Reviewed-on: https://go-review.googlesource.com/c/go/+/548319
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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This was implemented in Go 1.21.
Change-Id: Ic434670938589f10f367b1f893c4427e6f0b991c
Reviewed-on: https://go-review.googlesource.com/c/go/+/549196
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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Make sure the platform we are running the tests on can compile programs
and has cgo support in order to run the fuzzer and msan tests. This is the
same approach used by the asan tests, which share the same requirements.
Fixes#64626
Change-Id: I7c0b912dabdd1b7d7d44437e4ade5e5994994796
GitHub-Last-Rev: 9fae6970f0
GitHub-Pull-Request: golang/go#64640
Reviewed-on: https://go-review.googlesource.com/c/go/+/548715
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Reviewed-by: Bryan Mills <bcmills@google.com>
Add a new flag 'reverse' to control the formatting of type inference
error messages.
This change only impacts error messages.
Fixes#60747.
Change-Id: I81e13075e3157252ccc09f358bd29bd676c34499
Reviewed-on: https://go-review.googlesource.com/c/go/+/549055
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
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Introduce a new type "target" to pass around target types together
with a suitable description (typically a variable name) for a better
error message.
As a side effect, using a specific type (target), rather than just Type
avoids accidental confusion with other types.
Use the target type description for a better error message in some
cases.
The error message can be further improved by flipping the order of
the sentence (for another CL to keep this one small and simple).
Also, and unrelated to this fix, remove the first argument to errorf
in infer.go: the argument is always "type" (there's only one call).
For #60747.
Change-Id: I2118d0fe9e2b4aac959371941064e0e9ca7b3b6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/548995
Auto-Submit: Robert Griesemer <gri@google.com>
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The only issue in this section, #56378, does not need a release note
for Go 1.22 because its feature was disabled for this release.
For #61422.
Updates #56378.
Change-Id: Ia4e090994cd9ac04e855f8b3a2c6ca0cde4485d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/548876
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Per discussion with rfindley.
Change-Id: Ia1cff05aff724eb8c919ffcc1fac121ca017efe9
Reviewed-on: https://go-review.googlesource.com/c/go/+/549056
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
For #61422.
Change-Id: I1b20c536a5b1c105286c84e7c1c7e37eb89bbc93
Reviewed-on: https://go-review.googlesource.com/c/go/+/548879
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
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For #61422.
Change-Id: Icf56cba0ac40b46caf3072bf2951b07403f47f36
Reviewed-on: https://go-review.googlesource.com/c/go/+/548939
Auto-Submit: Michael Pratt <mpratt@google.com>
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Use a GODEBUG to choose which certificate policy field to use. If
x509usepolicies=1 is set, use the Policies field, otherwise use the
PolicyIdentifiers field.
Fixes#64248
Change-Id: I3f0b56102e0bac4ebe800497717c61c58ef3f092
Reviewed-on: https://go-review.googlesource.com/c/go/+/546916
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This probably fixes the failure mode seen in
https://build.golang.org/log/e73acfd930cbe82302505cac0041d9883e2360c5.
If not, allowing the test to deadlock and dump goroutines
should produce better debugging information than the existing
"didn't return in an expected time" failure message.
For #58901.
Change-Id: Ie0bb1887a4329d2f6b0e7348a4820af71385494e
Reviewed-on: https://go-review.googlesource.com/c/go/+/548881
Auto-Submit: Bryan Mills <bcmills@google.com>
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If we encounter an unclassified error in modload.Query, it takes
precedence even if the package is found in some other module.
(That is intentional, so that if a package exists in both a parent
and a nested module the outcome is deterministic, and does not shift
if a temporary error causes one of the modules to be unavailable.)
A pseudo-version is formed from a base version and a commit hash.
Each version tag is specific to the module in a particular directory
of the repo (often the root directory), whereas the commit hash is
the same for all subdirectories. When we go to check a particular
subdirectory for the requested package, we may find that that version
is not valid for that combination of <subdirectory, commit hash>,
but we should keep looking to see whether it is valid for a module
in some other subdirectory.
Fixes#47650.
Change-Id: Id48f590ce906a3d4cf4e82fc66137bf67613277d
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For #57302.
For #61422.
Change-Id: Iee4e6600bf473eb982d0cb7330f7b2c1b48b9e13
Reviewed-on: https://go-review.googlesource.com/c/go/+/548575
Reviewed-by: Cherry Mui <cherryyz@google.com>
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For #61422.
Change-Id: Id4eed9affde20857d6b60c0b6d7d1443ea5e460b
Reviewed-on: https://go-review.googlesource.com/c/go/+/548938
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Add TODOs for APIs mentioned in api/go1.22.txt but missing from the
release notes.
The issue list was generated with:
$ awk '{print substr($NF, 2, length($NF)-1)}' < ../api/go1.22.txt | uniq | xargs -I{} sh -c 'echo -n "{}: " && grep -c {} ../doc/go1.22.html'
For #61422.
Change-Id: I85d41c28530e6b5e3e388a41206b251278c91dd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/548937
Auto-Submit: Michael Pratt <mpratt@google.com>
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For #61422.
Change-Id: I976b8cc14893b91e5140c7b53d0773bca57cb19d
Reviewed-on: https://go-review.googlesource.com/c/go/+/548936
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
For #61422.
Change-Id: If87f30229e5e5351e81d42c777259335af3533e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/548878
Auto-Submit: Michael Pratt <mpratt@google.com>
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For #61422.
Change-Id: I621627140d2d5ebede9b932a7e55fbe92ded5249
Reviewed-on: https://go-review.googlesource.com/c/go/+/548935
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profileBuilder is using Frame->Function as key for checking if we already
emitted a function. However for generics functions it has dots there [...],
so sometimes for different functions with different generics types,
the profileBuilder emits wrong functions.
Fixes#64528
Change-Id: I8b39245e0b18f4288ce758c912c6748f87cba39a
Reviewed-on: https://go-review.googlesource.com/c/go/+/546815
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The pointer stored in mspan.largeType is an invalid pointer when
the span is an arena. We need to make sure that pointer isn't seen
by the garbage collector, as it might barf on it. Make sure we
zero the pointer using a uintptr write so the old value isn't picked
up by the write barrier.
The mspan.largeType field itself is in a NotInHeap struct, so a heap
scan won't find it. The only way we find it is when writing it, or
when reading it and putting it in a GC-reachable location. I think we
might need to audit the runtime to make sure these pointers aren't
being passed in places where the GC might (non-conservatively) scan a
stack frame it lives in. (It might be ok, many such places are either
systemstack or nosplit.)
Change-Id: Ie059d054e0da4d48a4c4b3be88b8e1e46ffa7d10
Reviewed-on: https://go-review.googlesource.com/c/go/+/548535
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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CL 516860 accidentally changed the randomness
used in TempFile from 32 to 64 bits on 64-bit platforms,
meaning from 10 to 20 decimal bytes.
This is enough to cause problems in a few tests
because it makes temporary directory names just
a little bit longer.
Limit back down to 32 bits of randomness, which is fine,
and add a test to avoid repeating the mistake.
Fixes#64605.
Change-Id: I17b8c063d11d5c0a96a68b5e5f83c889a13bca77
Reviewed-on: https://go-review.googlesource.com/c/go/+/548635
Reviewed-by: Bryan Mills <bcmills@google.com>
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Auto-Submit: Russ Cox <rsc@golang.org>
