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
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Runinng 'go build' writes the binary in a separate process, so avoids
the race described in #22315. However, the script engine's 'cp'
command currently executes in-process, so it does not avoid that bug
and may retain stale file descriptors when running tests in parallel.
Avoid the race in this particular test by giving the final binary
location in the '-o' argument instead of copying it there after the
fact.
Fixes#64019.
Change-Id: I96d276f33c09e39f465e9877356f1d8f2ae55062
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Clarify the section in the "go" command notes that deals with the
changes to "go test -cover" for packages without tests, adding a note
that if a package has not tests and no executable code, you still get
a "package has no test files" diagnostic.
Fixes#65262.
Change-Id: Ie960871f9d5c1a1965090738644eace28fc3e156
Reviewed-on: https://go-review.googlesource.com/c/go/+/561337
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Chris Hines <chris.cs.guy@gmail.com>
Make a copy of the argument File's FileHeader, and pass a pointer
to the copy to CreateRaw.
Passing the pointer directly causes the entire `File` to be referenced
by the receiver. The `File` includes a reference to the `ReaderAt`
underlying the `Reader`, so all its memory, which may be the entire
contents of the archive, is prevented from being garbage-collected.
Also, explain the issue in the doc comment for CreateRaw. We
cannot change its behavior because someone may depend on the
preserving the identity of its argument pointer.
For #65499.
Change-Id: Ieb4963a0ea30539d597547d3511accbd8c6b5c5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/560238
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Reviewed-by: Damien Neil <dneil@google.com>
Change-Id: I3003968d9d7e543c25d4b0ab1d1cd924a1efd3ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/561456
Auto-Submit: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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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>
Types returned by the go/types API must be immutable (or at least
concurrency safe), but NewAlias returned an alias without actual set.
Ensure that actual is set by unaliasing. Also make some superficial
simplifications to unalias, and avoid indirection where unnecessary.
Fixesgolang/go#65455
Change-Id: Ic9a020da5accf9032056a924b65c9e9e08cb2e0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/560915
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In genssa, s.pp == pp, so using either is equivalent, but use is
inconsistent. About half of the uses use s.pp and the other half use pp.
This gets confusing, especially when two different uses are right next
to each other, because it implies that these might be different.
Pick one and use it consistently.
Change-Id: Ifb1bb9332138d8cb62a45c212fcd7139f8511901
Reviewed-on: https://go-review.googlesource.com/c/go/+/560780
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Fix the check for release note files that correspond to API files
to look in the right directory, doc/next/*stdlib/*minor. Previously
the test looked in doc/next.
Improve the error messages when the test fails to explain the problem
better and refer to further documentation.
(These changes are actually in the x/build repo; this CL vendors
the latest version.)
Lastly, re-enable the check.
For #64169.
Change-Id: I8bba845e9bd12afbe269ce42d6d4b17b1e3c0252
Reviewed-on: https://go-review.googlesource.com/c/go/+/560516
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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These primitives will be used by the new And/Or sync/atomic apis.
For #61395
Change-Id: I64b2e599e4f91412e0342aa01f5fd53271e9a333
GitHub-Last-Rev: 9755db5406
GitHub-Pull-Request: golang/go#63314
Reviewed-on: https://go-review.googlesource.com/c/go/+/531895
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
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Reviewed-by: Keith Randall <khr@golang.org>
In CL 356611 I changed cmd/go to run most of its tests (instead of
skipping them all) when cross-compiled, such as with GOARCH=386 on an
amd64 host. Unfortunately, since we don't have a CI builder that runs
long tests in a cross-compiled configuration, some of the tests have
rotted since then.
This fixes 'GOARCH=386 go test cmd/go' on my workstation.
For #64963.
Updates #53936.
Change-Id: If7f4bc8e8d1ace7d36010d7a1b652fc7b2ceb276
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In CL 536715 we're changing the gofrontend export data to report
"any" as a builtin type. This permits us to distinguish the builtin
type from some other package-level type "any". That requires an update
to this code.
Change-Id: I91d75a056a155fa9892c4b25ab396cb4d39cc8e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/537195
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
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isPreProfileFile reads the entire file into memory just to check the
first few bytes, and then throws it all away. We can avoid this by just
peeking at the beginning.
For #58102.
Change-Id: Id2c2844e5e44a2f3a9c7cdb9a027d94d26bdf71d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560035
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crashFD defaults to the zero value of (surprise!) zero. Zero is a valid
FD, so on the first call to SetCrashOutput we actually close FD 0 since
it is a "valid" FD.
Initialize crashFD to -1, the sentinel for "no FD".
Change-Id: I3b108c60603f2b83b867cbe079f035c159b6a6ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/560776
Reviewed-by: Alan Donovan <adonovan@google.com>
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Commit generated by update.bash.
For #22487.
Change-Id: I1c46ec1f3a84e385f8eab2c4c9a14d3513a85a44
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Change-Id: Id9103aa4bda221f5eb34a0ede8676364c574b696
Reviewed-on: https://go-review.googlesource.com/c/go/+/560616
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The DIEs method of Examiner is the only one with a receiver declared 'e'; all the rest have 'ex'. Fix it to be consistent.
Change-Id: I494a53cf3db5575d45831cab3cf612c20962f8fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/554575
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
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This brings in CL 559505 which adds a stub for counter.CountFlags so
it can be depended on and still build on Go 1.18 and earlier. This
will allow the go command to use counter.CountFlags and still be able
to build as the bootstrap command with an earlier version of Go.
For #58894
Change-Id: I31d5b96bd47eef2e407ef97e6146adece403f2c0
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When -covermode is set to atomic, instrumented packages need to import
sync/atomic. If this is not already imported by a package being
instrumented, the build needs to ensure that sync/atomic is compiled
whenever 'go list' is run in a way that triggers package builds.
The build config was already being made to ensure the import, but only
after the action graph had been created, so there was no guarantee that
sync/atomic would be built when needed.
Fixes#65264.
Change-Id: Ib3f1e102ce2ef554ea08330d9db69a8c98790ac5
Reviewed-on: https://go-review.googlesource.com/c/go/+/560236
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Currently there are a few places where a P can get stolen where the
runtime doesn't traceAcquire and traceRelease across the steal itself.
What can happen then is the following scenario:
- Thread 1 enters a syscall and writes an event about it.
- Thread 2 steals Thread 1's P.
- Thread 1 exits the syscall and writes one or more events about it.
- Tracing ends (trace.gen is set to 0).
- Thread 2 checks to see if it should write an event for the P it just
stole, sees that tracing is disabled, and doesn't.
This results in broken traces, because there's a missing ProcSteal
event. The parser always waits for a ProcSteal to advance a
GoSyscallEndBlocked event, and in this case, it never comes.
Fixes#65181.
Change-Id: I437629499bb7669bf7fe2fc6fc4f64c53002916b
Reviewed-on: https://go-review.googlesource.com/c/go/+/560235
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Currently the trace map is cleared with an assignment, but this ends up
invoking write barriers. Theoretically, write barriers could try to
write a trace event and eventually try to acquire the same lock. The
static lock ranking expresses this constraint.
This change replaces the assignment with a call to memclrNoHeapPointer
to clear the map, removing the write barriers.
Note that technically this problem is purely theoretical. The way the
trace maps are used today is such that reset is only ever called when
the tracer is no longer writing events that could emit data into a map.
Furthermore, reset is never called from an event-writing context.
Therefore another way to resolve this is to simply not hold the trace
map lock over the reset operation. However, this makes the trace map
implementation less robust because it needs to be used in a very
specific way. Furthermore, the rest of the trace map code avoids write
barriers already since its internal structures are all notinheap, so
it's actually more consistent to just avoid write barriers in the reset
method.
Fixes#56554.
Change-Id: Icd86472e75e25161b2c10c1c8aaae2c2fed4f67f
Reviewed-on: https://go-review.googlesource.com/c/go/+/560216
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Currently the flight recorder tests are failing in race mode because the
race detector doesn't see s.lock, leading to false positives. This has
also appeared in the trace tests. Model the lock in the race detector.
Fixes#65207.
Fixes#65283.
Change-Id: I1e9a5c9606536f55fdfc46b5f8443e9c7213c23d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560215
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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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This limits the throughput and resource consumption of the fuzz
workers in the tests, which also reduces the likelihood of running out
of address space in the fuzz coordinator during the test.
(Ideally the coordinator should not be limited by address space;
this just works around the failure mode in the tests for now.)
For #65434.
Change-Id: I3086c6278d6803a3dbf17a46ed01b68cedc92ad9
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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
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This reverts CL 546135.
Reason for revert: Causes occasional throw during panic
For #65416.
Change-Id: I78c15637da18f85ede785363b777aa7d1dead3c3
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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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It's a new package in the standard library,
not a minor change to an existing package.
For #62039.
For #61422.
Change-Id: I7488304cd2bd6353f535cab192d015796840ba4e
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The term "memory leak" was misused here, as the memory is still referenced
by the slice.
Fixes#65403
Change-Id: Id102419d4c798fb2a4ec8be86be9ec9b5cdd98e6
GitHub-Last-Rev: 3febcd0ba4
GitHub-Pull-Request: golang/go#65404
Reviewed-on: https://go-review.googlesource.com/c/go/+/559775
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Per the discussion on the issue, make methods that depend on
incoming offsets or positions tolerant in the presence of
out-of-bounds values by adjusting the values as needed.
Add an internal flag debug that can be set to enable the old
(not fault-tolerant) behavior.
Fixes#57490.
Change-Id: I8a7d422b9fd1d6f0980fd4e64da2f0489056d71e
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The proposal discussion made clear that suffixes should be accepted,
so that people who use custom VERSION files can still pass runtime.Version()
to this code. But we forgot to do that in the CL. Do that.
Note that cmd/go also strips space- and tab-prefixed suffixes,
but go.dev/doc/toolchain only mentions dash, so this code only
strips dash.
Fixes#65061.
Change-Id: I6a427b78f964eb41c024890dae30223beaef13eb
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For #64169.
Change-Id: I0fc6d6a041ad48957f4aecd18b85c9098fc9b403
Reviewed-on: https://go-review.googlesource.com/c/go/+/559755
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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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When we are crashing from an unrecovered panic, we freeze the
world, and print stack traces for all goroutines if GOTRACEBACK is
set to a high enough level. Freezing the world is best effort, so
there could still be goroutines that are not preempted, and so its
stack trace is unavailable and printed as "goroutine running on
other thread".
As we're crashing and not resuming execution on preempted
goroutines, we can make preemption more aggressive, preempting
cases that are not safe for resumption or stack scanning. This may
make goroutines more likely to be preempted in freezing the world
and have their stacks available.
Change-Id: Ie16269e2a05e007efa61368b695addc28d7a97ee
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%03s zero-pads a string with spaces; always has and now always will.
Fixes#56486.
Change-Id: Ia336581ae7db1c3456699e69e14a3071f50c9f2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/559197
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This reverts CL 555776 (commit 704401ffa0).
Scores of tests break inside Google, and there was a test for the old behavior,
so clearly we thought it was correct at one point.
An example of code that broke inside Google is:
func (pn ProjectNumber) PaddedHexString() string {
return fmt.Sprintf("%016s", strconv.FormatInt(int64(pn), 16))
}
Here is another example:
// IPv4toISO create ISO address base on a given IPv4 address.
func IPv4toISO(v4 string) (string, error) {
if net.ParseIP(v4).To4() == nil {
return "", fmt.Errorf("invalid IPv4 address")
}
s := strings.Split(v4, ".")
var ss string
for _, n := range s {
ss = ss + fmt.Sprintf("%03s", n)
}
if len(ss) != 12 {
return "", fmt.Errorf("invalid IPv4 address")
}
return fmt.Sprint("49.0001." + ss[0:4] + "." + ss[4:8] + "." + ss[8:12] + ".00"), nil
}
This is doing the weird but apparently standard conversion from
IPv4 to ISO ISIS Area 1 (see for example [1]).
Here is an example from github.com/netbirdio/netbird:
func generateNewToken() (string, string, error) {
secret, err := b.Random(PATSecretLength)
if err != nil {
return "", "", err
}
checksum := crc32.ChecksumIEEE([]byte(secret))
encodedChecksum := base62.Encode(checksum)
paddedChecksum := fmt.Sprintf("%06s", encodedChecksum)
plainToken := PATPrefix + secret + paddedChecksum
hashedToken := sha256.Sum256([]byte(plainToken))
encodedHashedToken := b64.StdEncoding.EncodeToString(hashedToken[:])
return encodedHashedToken, plainToken, nil
}
base62.Encode returns a string no leading zeros; the %06s adds leading zeros.
Are there other ways to write these examples? Yes.
Has all this code worked until now? Also yes.
The change to this behavior observed that right padding doesn't
add zeros, only left padding, but that makes sense: in numbers
without decimal points, zeros on the left preserve the value
while zeros on the right change it.
Since we agree that this case is probably not important either way,
preserve the long-time behavior of %0s.
Will document it in a followup CL: this is a clean revert.
Reopen#56486.
[1] https://community.cisco.com/t5/routing/isis-net-address-configuration/m-p/1338984/highlight/true#M127827
Change-Id: Ie7dd35227f46933ccc9bfa1eac5fa8608f6d1918
Reviewed-on: https://go-review.googlesource.com/c/go/+/559196
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Rob Pike <r@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
According to RFC 7230, empty field names in HTTP header are invalid.
However, there are no specific instructions for developers to deal
with that kind of case in the specification. CL 11242 chose to skip
it and do nothing about it, which now seems like a bad idea because
it has led `net/http` to behave inconsistently with the most widely-used
HTTP implementations: Apache, Nginx, Node with llhttp, H2O, Lighttpd, etc.
in the case of empty header keys.
There is a very small chance that this CL will break a few existing HTTP clients.
Fixes#65244
Change-Id: Ie01e9a6693d27caea4d81d1539345cf42b225535
Reviewed-on: https://go-review.googlesource.com/c/go/+/558095
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Also: report language version (plus date) in spec header.
Fixes#65137.
Change-Id: I4f1d220d5922c40a36264df2d0a7bb7cd0756bac
Reviewed-on: https://go-review.googlesource.com/c/go/+/557596
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
This change vendors golang.org/x/telemetry and calls counter.Open in
cmd/go right at the beginning.
For #58894
Change-Id: Iae56328440614b213c1429972e6f68f22c2112cd
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-windows-amd64-longtest,gotip-linux-amd64-longtest-race
Reviewed-on: https://go-review.googlesource.com/c/go/+/559199
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TestValueEqual: Added test cases for DurationValue, StringValue, and TimeValue types.
TestValueAny: Added a test case for string values.
Change-Id: I74ef15bcfcacd0bf5d990debd24846283edf1ecd
GitHub-Last-Rev: 6adb9f6f31
GitHub-Pull-Request: golang/go#65303
Reviewed-on: https://go-review.googlesource.com/c/go/+/558755
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Auto-Submit: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
