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53516 Commits

Author SHA1 Message Date
Ian Lance Taylor
62b38000ab runtime/internal/syscall: use correct result names for loong64
Fixes "GOARCH=loong64 go vet runtime/internal/syscall"

Change-Id: I5879eec3ff07b0c69a5a8ac8e854733261e98fbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/408695
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2022-05-26 02:23:09 +00:00
Motiejus Jakštys
16e7613b2e cmd/cgo: use --no-gc-sections if available
zig cc passes `--gc-sections` to the underlying linker, which then
causes undefined symbol errors when compiling with cgo but without C
code. Add `-Wl,--no-gc-sections` to make it work with zig cc. Minimal
example:

**main.go**

    package main
    import _ "runtime/cgo"
    func main() {}

Run (works after the patch, doesn't work before):

    CC="zig cc" go build main.go

Among the existing code, `src/runtime/testdata/testprognet` fails to
build:

    src/runtime/testdata/testprognet$ CC="zig cc" go build .
    net(.text): relocation target __errno_location not defined
    net(.text): relocation target getaddrinfo not defined
    net(.text): relocation target freeaddrinfo not defined
    net(.text): relocation target gai_strerror not defined
    runtime/cgo(.text): relocation target stderr not defined
    runtime/cgo(.text): relocation target fwrite not defined
    runtime/cgo(.text): relocation target vfprintf not defined
    runtime/cgo(.text): relocation target fputc not defined
    runtime/cgo(.text): relocation target abort not defined
    runtime/cgo(.text): relocation target pthread_create not defined
    runtime/cgo(.text): relocation target nanosleep not defined
    runtime/cgo(.text): relocation target pthread_detach not defined
    runtime/cgo(.text): relocation target stderr not defined
    runtime/cgo(.text): relocation target strerror not defined
    runtime/cgo(.text): relocation target fprintf not defined
    runtime/cgo(.text): relocation target abort not defined
    runtime/cgo(.text): relocation target pthread_mutex_lock not defined
    runtime/cgo(.text): relocation target pthread_cond_wait not defined
    runtime/cgo(.text): relocation target pthread_mutex_unlock not defined
    runtime/cgo(.text): relocation target pthread_cond_broadcast not defined
    runtime/cgo(.text): relocation target malloc not defined

With the patch both examples build as expected.

@ianlancetaylor suggested:

> It would be fine with me if somebody wants to send a cgo patch that
passes -Wl,--no-gc-sections, with a fallback if that option is not
supported.

... and this is what we are doing. Tested with zig
0.10.0-dev.2252+a4369918b

This is a continuation of CL 405414: the original one broke AIX and iOS
builds. To fix that, added `unknown option` to the list of strings
under lookup.

Fixes #52690

Change-Id: Id6743e1e759a02627b0fc6d2ac89bb69b706d04c
GitHub-Last-Rev: 86f227a14e
GitHub-Pull-Request: golang/go#53028
Reviewed-on: https://go-review.googlesource.com/c/go/+/407814
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2022-05-26 00:50:00 +00:00
Ian Lance Taylor
557244cef7 go/printer: if comment gets formatted away, don't squash
We were dropping the preceding whitespace.

Fixes #53059

Change-Id: Ide0d6a76c463a7481ec4883a8568f7f7b5e87e9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/408394
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-25 23:11:14 +00:00
Damien Neil
757f3c802a net: add even more timing slop for TestDialParallel
This test expects dials of a closed port to complete in about the same
amount of time: an initial probe value +/- 20%. Reduce test flakes on
Windows by increasing the slop to +/- 50% of the original value.

Fixes #52173

Change-Id: I813492c36aca2b0264b3b5b8c96e8bf97193af76
Reviewed-on: https://go-review.googlesource.com/c/go/+/408354
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-25 17:58:26 +00:00
Bryan C. Mills
78b722d8c2 cmd/go: place GOROOT/bin at the beginning of PATH in 'go generate' and 'go test'
This causes tests and generators that execute 'go' as a subprocess to
use the same go command as the parent 'go test' or 'go generate'
command.

For #51473.

Change-Id: I003cf1d05d1c93a26c6a7fdfad25e86c11765f59
Reviewed-on: https://go-review.googlesource.com/c/go/+/404134
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2022-05-25 16:40:59 +00:00
Matthew Dempsky
4e4db1e257 internal/pkgbits: add Index type
Element indices are very common in the pkgbits API, so introduce a new
defined type to help make that clearer.

Change-Id: I8f9493e2335601c740eb403d1fdcd11183122907
Reviewed-on: https://go-review.googlesource.com/c/go/+/407435
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-25 16:16:01 +00:00
Matthew Dempsky
8841699160 internal/pkgbits: finish documentation
This CL adds documentation for all exported pkgbits APIs, and removes
its UNREVIEWED comments.

Updates #48194.

Change-Id: Ifff548cd9f31a5c5cc5f400a6dae5c98c46ec4ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/407614
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
2022-05-25 16:15:47 +00:00
Tobias Klauser
7791e934c8 hash/crc32: fix typo in arm64 archInitCastagnoli panic message
Change-Id: I5291216d5416eccd5a67b45b2f32cf2932b3747f
Reviewed-on: https://go-review.googlesource.com/c/go/+/407974
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2022-05-25 05:31:01 +00:00
Yasuhiro Matsumoto
9cd1818a7d path/filepath: do not remove prefix "." when following path contains ":".
Fixes #52476

Change-Id: I9eb72ac7dbccd6322d060291f31831dc389eb9bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/401595
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-24 21:52:14 +00:00
Carlos Amedee
b6bcd0d135 doc/go1.19: update Go 1.19 relese note TODOs using relnote
This updates the release notes with TODOs using relnote. It also
changes all refrences of golang.org to go.dev.

For #51400.

Change-Id: I8a210140483aed7c41fe47242041e4b363e2eb10
Reviewed-on: https://go-review.googlesource.com/c/go/+/408217
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Carlos Amedee <carlos@golang.org>
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Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2022-05-24 21:25:09 +00:00
David Chase
ccf84a9750 cmd/compile: catch pointless recursion on function types
If a function type has no type parameters, note when it
is visited and do not recur.  (It must be visited
at least once because of closures and their associated
types occurring in a generic context).

Fixes #51832.

Change-Id: Iee20612ffd0a03b838b9e59615f4a0206fc8940b
Reviewed-on: https://go-review.googlesource.com/c/go/+/406714
Reviewed-by: Keith Randall <khr@google.com>
2022-05-24 20:35:40 +00:00
Sean Liao
0a30cf9536 builtin: clarify effect of close on receive
Fixes #53041

Change-Id: If6580c8f0f14edfdc297d3239a7767ce0570ff79
Reviewed-on: https://go-review.googlesource.com/c/go/+/407975
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Rob Pike <r@golang.org>
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2022-05-24 19:45:14 +00:00
Robert Findley
d5ae7a6487 go/types, types2: remove redundant calls to Named.resolve
The resolved status of a Named type should be owned by its API, and
callers should access resolved data via methods. Remove several
instances where Named.resolve is explicitly invoked, only to be followed
by a method that also resolves.

Also make two minor cleanups:
- Remove the tparams parameter to Checker.newNamed, as it was unused.
- Include position information when assertions fail, so that one doesn't
  need to go digging in the panicking stack to find the assertion
  location.

Updates #52728

Change-Id: Icbe8c89e9cfe02d60af7d9ba907eaebe1f00193e
Reviewed-on: https://go-review.googlesource.com/c/go/+/404874
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2022-05-24 17:47:42 +00:00
Bryan C. Mills
7ce3864156 cmd/go/internal/modfetch: wrap errors from HTTP response bodies
The Read method on the Body returned from a net/http.Transport does
not wrap errors returned by the underlying io.Reader and returns a
bare io.ErrUnexpectedEOF if the body is shorter than the declared
Content-Length.

Since we can't feasibly add detail on the net/http side without
breaking established users, we must instead add detail on the caller
side. Since the net/http client uses url.Error for most of its own
errors, we use that same error type here.

I have not added a regression test for this change. (While it is
theoretically possible to set up a GOPROXY that returns incorrect
Content-Length headers, the change seems straightforward enough that
it isn't worth the complex test setup.)

Fixes #52727.

Change-Id: Id00b04ae4fd518148106a49188fe169aadbcce2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/406675
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-24 17:05:39 +00:00
Robert Griesemer
70668a4144 go/types, types2: don't panic with invalid recursive generic type
Add cycle detection to hasVarType to avoid infinite recursions
caused by invalid cyclic types. This catches cases where the
validType check has not yet run or has checked differently
instantiated types.

As an alternative, validType could mark invalid *Named types
by setting their underlying types to Typ[Invalid]. That does
work but discards information which leads to undesired effects
with other errors. A better mechanism might be to explicitly
track in *Named if a type is invalid and why it is invalid,
and connect that with a general validity attribute on types.
That's a more invasive change we might consider down the road.

Fixes #52915.

Change-Id: I9e798b348f4a88b1655e1ff422bd50aaefd9dc50
Reviewed-on: https://go-review.googlesource.com/c/go/+/406849
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-24 17:02:34 +00:00
Robert Griesemer
eb3ac1f5a4 cmd/compile/internal/types2: mention go.mod file when using undeclared any
Use the existing versionErrorf mechanism to report use of undeclared
any and comparable.

Also, port versionErrorf mechanism to go/types and use it in this
case as well.

Adjust tests as needed.

For #52880.

Change-Id: I6a646f16a849692ee0cb57e362d5f3d77e2c25f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/407896
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2022-05-24 16:05:16 +00:00
Cherry Mui
62e1302267 misc/cgo/testsanitizers: use buffered channel in tsan12.go
os/signal.Notify requires that "the caller must ensure that c has
sufficient buffer space to keep up with the expected signal rate"
as it does a nonblocking send when it receives a signal. The test
currently using a unbuffered channel, which means it may miss the
signal if the signal arrives before the channel receive operation.

Fixes #52998.

Change-Id: Icdcab9396d735506480ef880fb45a4669fa7cc8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/407888
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-24 14:30:46 +00:00
Guoqi Chen
61fc5df689 runtime: add missing {TOPFRAME,NOFRAME} flag for linux/loong64
Co-authored-by: limeidan <limeidan@loongson.cn>
Change-Id: I0011a10f831e6c2b0da96265682212b0747f0e2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/407774
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-24 03:54:13 +00:00
Guoqi Chen
654b03167f cmd/internal/obj: add FuncInfo SPWRITE flag for linux/loong64
Co-authored-by: limeidan <limeidan@loongson.cn>
Change-Id: Iac4f706fc9ff1047f1fa02f7178ebfbe38ad1ec3
Reviewed-on: https://go-review.googlesource.com/c/go/+/407754
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-24 01:08:23 +00:00
Cuong Manh Le
a2bca290e7 cmd/compile: fix loong64 constant folding in division rules
The divisor must be non-zero for the rule to be triggered.

Fixes #53018

Change-Id: Id56b8d986945bbb66e13131d11264ee438de5cb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/407655
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
2022-05-23 23:54:07 +00:00
Robert Griesemer
2138124143 go/types, types2: detect dupl. map keys in comp. literals with generic key type
For map composite literals where the key type is a suitably constrained
type parameter, the existing key duplicate detection mechanism doesn't
work when the keys are numeric values of different types but equal value.
For instance, given

        func _[P int64|float64]() {
                _ = map[P]string{0: "foo", 0.0: "bar"}
        }

the key values 0 and 0.0 have the same numeric value 0 but currently
are treated as different values int64(0) and float64(0.0). For any
valid instantiation of P, the keys will collide.

This CL changes the keyVal function to map numeric types to the
"smallest" numeric type in which a value can be represented. For
instance, float64(0.0) is mapped to int64(0). This ensures that
numerically equal values are always represented the same way so
that they can be detected as duplicates.

Fixes #51610.

Change-Id: I3eb71142bbe6b13453282a7f71ee48950e58ecbd
Reviewed-on: https://go-review.googlesource.com/c/go/+/406555
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2022-05-23 22:10:24 +00:00
WANG Xuerui
3fa5ab0d83 runtime: fix the vDSO symbol version on loong64
The current value is appropriate for an early in-house version of
Linux/LoongArch, but for the upstream version it is very likely
"LINUX_5.10" instead, per the latest upstream submission [1].

[1]: https://lore.kernel.org/all/20220518095709.1313120-3-chenhuacai@loongson.cn/

Change-Id: Ia97e5cae82a5b306bd3eea86b9e442441da07973
Reviewed-on: https://go-review.googlesource.com/c/go/+/407755
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
2022-05-23 21:58:55 +00:00
Cherry Mui
e6b5949a75 cmd/internal/obj/arm64: fix encoding of ADR/ADRP instruction
The referenced address is p.From, not p.To.

Separate from CL 403980, as this is a bug fix. Also, ADR is used
in CL 387336. This is needed to make it work correctly.

Change-Id: Ie0baaeb359b9a7f233458d2becf25dc6a1f8ecbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/407884
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2022-05-23 21:58:35 +00:00
Bryan C. Mills
715ba65563 misc/cgo/testsanitizers: terminate commands with SIGQUIT if hung
If the test hangs due to a deadlock in a subprocess, we want a
goroutine dump of that process to figure out the nature of the
deadlock. SIGQUIT causes the Go runtime to produce exactly
such a dump (unless the runtime itself is badly deadlocked).

For #52998.

Change-Id: Id9b3ba89d8f705e14f6cd789353fc2b7f4774ad3
Reviewed-on: https://go-review.googlesource.com/c/go/+/407954
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
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2022-05-23 21:33:54 +00:00
Cherry Mui
74f0ccb68b reflect: store receiver in pointer slot for reflect call
The code comment says that the receiver doesn't need to go into
the pointer slot as it will be kept alive in this frame. But it
doesn't. There is no direct reference of rcvr or v (the receiver)
after storing the arguments. Also, it is clearer to explicitly
keep it alive.

Fixes #52800.

Change-Id: Ie3fa8e83f6ecc69d62e8bfab767314d5181f5dc0
Reviewed-on: https://go-review.googlesource.com/c/go/+/407508
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2022-05-23 18:40:59 +00:00
Khaled Yakdan
c1d197a96e cmd/compile: support libFuzzer value profiling mode for integer compares
libFuzzer provides a special mode known as “value profiling” in which it
tracks the bit-wise progress made by the fuzzer in satisfying tracked
comparisons. Furthermore, libFuzzer uses the value of the return address
in its hooks to distinguish the progress for different comparisons.

The original implementation of the interception for integer comparisons
in Go simply called the libFuzzer hooks from a function written in Go
assembly. The libFuzzer hooks thus always see the same return address
(i.e., the address of the call instruction in the assembly snippet) and
thus can’t distinguish individual comparisons anymore. This drastically
reduces the usefulness of value profiling.

This is fixed by using an assembly trampoline that injects synthetic but
valid return addresses on the stack before calling the libFuzzer hook,
otherwise preserving the calling convention of the respective platform
(for starters, x86_64 Windows or Unix). These fake PCs are generated
deterministically based on the location of the compare instruction in
the IR representation.

Change-Id: Iea68057c83aea7f9dc226fba7128708e8637d07a
GitHub-Last-Rev: f9184baafd
GitHub-Pull-Request: golang/go#51321
Reviewed-on: https://go-review.googlesource.com/c/go/+/387336
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2022-05-23 16:21:22 +00:00
Khaled Yakdan
3f571d1dea cmd/link: set coverage counters as expected by the fuzz package
Set _counters and _ecounters to the start and end locations of
libfuzzer's 8-bit counters section

Change-Id: Icadb503af1ba22495b1d88b69aad26d89843baa4
GitHub-Last-Rev: 4ca6216b76
GitHub-Pull-Request: golang/go#53022
Reviewed-on: https://go-review.googlesource.com/c/go/+/407674
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2022-05-23 14:38:06 +00:00
Ian Lance Taylor
0a1a092c4b Revert "cmd/cgo: use --no-gc-sections if available"
This reverts CL 405414.

Reason for revert: Breaks on AIX and iOS.

Change-Id: I4681c6f2fd69616691660916ebf0853e3a6a67ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/407634
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2022-05-20 23:37:43 +00:00
Dan Kortschak
c3470ca83c internal/fuzz: trim carriage return from version line
On windows hosts, when code is checked out using git with the default
setting of autocrlf=true, carriage returns are appended to source lines
which then prevent the version check from being successful. This removes
carriage returns to allow version matching.

Fixes #52268

Change-Id: I9acc4e907c93a20305f8742cc01687a122a88645
Reviewed-on: https://go-review.googlesource.com/c/go/+/402074
Reviewed-by: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Dan Kortschak <dan@kortschak.io>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-20 23:05:38 +00:00
Khaled Yakdan
2b0e457b42 cmd/compile: intercept string compares in libFuzzer mode
IR string compares as well as calls to string comparison functions such
as `strings.EqualFold` are intercepted and the corresponding libFuzzer
callbacks are invoked with the corresponding arguments. As a result, the
compared strings will be added to libFuzzer’s table of recent compares,
which feeds future mutations performed by the fuzzer and thus allow it
to reach into branches guarded by string comparisons.

The list of methods to intercept is maintained in
`cmd/compile/internal/walk/expr.go` and can easily be extended to cover
more standard library functions in the future.

Change-Id: I5c8b89499c4e19459406795dea923bf777779c51
GitHub-Last-Rev: 6b8529b555
GitHub-Pull-Request: golang/go#51319
Reviewed-on: https://go-review.googlesource.com/c/go/+/387335
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
2022-05-20 22:30:37 +00:00
Michael Anthony Knyszek
b58067013e runtime: allocate physical-page-aligned memory differently
Currently, physical-page-aligned allocations for stacks (where the
physical page size is greater than the runtime page size) first
overallocates some memory, then frees the unaligned portions back to the
heap.

However, because allocating via h.pages.alloc causes scavenged bits to
get cleared, we need to account for that memory correctly in heapFree
and heapReleased. Currently that is not the case, leading to throws at
runtime.

Trying to get that accounting right is complicated, because information
about exactly which pages were scavenged needs to get plumbed up.
Instead, find the oversized region first, and then only allocate the
aligned part. This avoids any accounting issues.

However, this does come with some performance cost, because we don't
update searchAddr (which is safe, it just means the next allocation
potentially must look harder) and we skip the fast path that
h.pages.alloc has for simplicity.

Fixes #52682.

Change-Id: Iefa68317584d73b187634979d730eb30db770bb6
Reviewed-on: https://go-review.googlesource.com/c/go/+/407502
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-05-20 21:54:20 +00:00
Khaled Yakdan
7ec6ef432a cmd/compile, cmd/link: use libFuzzer 8-bit instead of extra counters
By using libFuzzer’s 8-bit counters instead of extra counters, the
coverage instrumentation in libFuzzer mode is improved in three ways:
  1- 8-bit counters are supported on all platforms, including macOS and
     Windows, with all relevant versions of libFuzzer, whereas extra
     counters are a Linux-only feature that only recently received
     support on Windows.
  2- Newly covered blocks are now properly reported as new coverage by
     libFuzzer, not only as new features.
  3- The NeverZero strategy is used to ensure that coverage counters
     never become 0 again after having been positive once. This resolves
     issues encountered when fuzzing loops with iteration counts that
     are multiples of 256 (e.g., larger powers of two).

Change-Id: I9021210d7fbffd07c891ad08750402ee91cb3df5
GitHub-Last-Rev: 9057e4b21d
GitHub-Pull-Request: golang/go#51318
Reviewed-on: https://go-review.googlesource.com/c/go/+/387334
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2022-05-20 21:32:57 +00:00
Alex Brachet
e66f895667 cmd/cgo: allow DW_TAG_variable's with no name
https://reviews.llvm.org/D123534 is emitting DW_TAG_variable's
that don't have a DW_AT_name. This is allowed in the DWARF
standard. It is adding DIE's for string literals for better
symbolization on buffer overlows etc on these strings. They
no associated name because they are not user provided variables.

Fixes #53000

Change-Id: I2cf063160508687067c7672cef0517bccd707d7b
Reviewed-on: https://go-review.googlesource.com/c/go/+/406816
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-20 21:03:28 +00:00
Motiejus Jakštys
4dd9458162 cmd/cgo: use --no-gc-sections if available
zig cc passes `--gc-sections` to the underlying linker, which then
causes undefined symbol errors when compiling with cgo but without C
code. Add `-Wl,--no-gc-sections` to make it work with zig cc. Minimal
example:

**main.go**

    package main
    import _ "runtime/cgo"
    func main() {}

Run (works after the patch, doesn't work before):

    CC="zig cc" go build main.go

Among the existing code, `src/runtime/testdata/testprognet` fails to
build:

    src/runtime/testdata/testprognet$ CC="zig cc" go build .
    net(.text): relocation target __errno_location not defined
    net(.text): relocation target getaddrinfo not defined
    net(.text): relocation target freeaddrinfo not defined
    net(.text): relocation target gai_strerror not defined
    runtime/cgo(.text): relocation target stderr not defined
    runtime/cgo(.text): relocation target fwrite not defined
    runtime/cgo(.text): relocation target vfprintf not defined
    runtime/cgo(.text): relocation target fputc not defined
    runtime/cgo(.text): relocation target abort not defined
    runtime/cgo(.text): relocation target pthread_create not defined
    runtime/cgo(.text): relocation target nanosleep not defined
    runtime/cgo(.text): relocation target pthread_detach not defined
    runtime/cgo(.text): relocation target stderr not defined
    runtime/cgo(.text): relocation target strerror not defined
    runtime/cgo(.text): relocation target fprintf not defined
    runtime/cgo(.text): relocation target abort not defined
    runtime/cgo(.text): relocation target pthread_mutex_lock not defined
    runtime/cgo(.text): relocation target pthread_cond_wait not defined
    runtime/cgo(.text): relocation target pthread_mutex_unlock not defined
    runtime/cgo(.text): relocation target pthread_cond_broadcast not defined
    runtime/cgo(.text): relocation target malloc not defined

With the patch both examples build as expected.

@ianlancetaylor suggested:

> It would be fine with me if somebody wants to send a cgo patch that
passes -Wl,--no-gc-sections, with a fallback if that option is not
supported.

... and this is what we are doing. Tested with zig
0.10.0-dev.2252+a4369918b

Fixes #52690

Change-Id: Ib6d1b2bd59335e9663afefd360ddad7da358a938
GitHub-Last-Rev: 58406b36ca
GitHub-Pull-Request: golang/go#52815
Reviewed-on: https://go-review.googlesource.com/c/go/+/405414
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-20 21:03:26 +00:00
Matthew Dempsky
69b412b7d6 internal/pkgbits: better documentation
Change-Id: I3f96a6e8a43faa5c8111b9d979aa37822c1dce06
Reviewed-on: https://go-review.googlesource.com/c/go/+/407434
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2022-05-20 19:01:40 +00:00
Xiaodong Liu
ec464edb22 cmd/dist: port to linux/loong64 completed
For #46229

Change-Id: I5c207482d0a2cfb3a66f7e293cf413a5b54daa26
Reviewed-on: https://go-review.googlesource.com/c/go/+/397074
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-20 16:17:43 +00:00
Xiaodong Liu
c6ef69e7d7 misc, test: fix test error for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I6760b4a7e51646773cd0f48baa1baba01b213b7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/342325
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-20 16:16:37 +00:00
Wang Deyu
22a3209bc6 runtime: update description of GODEBUG=scavtrace=1
For #48409.

Change-Id: I056afcdbc417ce633e48184e69336213750aae28
Reviewed-on: https://go-review.googlesource.com/c/go/+/406575
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-20 15:17:29 +00:00
Xiaodong Liu
1371339530 go, math, os, reflect: support standard library for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I2ad9ed01fc913b90e75023ac0fa70de87a9f5de1
Reviewed-on: https://go-review.googlesource.com/c/go/+/342324
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2022-05-20 15:12:52 +00:00
Xiaodong Liu
ae3ee9a7ec syscall: add syscall support for linux/loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Ia676bd2875701639314cadbd39d97620afb3f0a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/342317
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-20 15:12:49 +00:00
Xiaodong Liu
ed7c487178 runtime: add loong64 to architectures known to TestGCInfo
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I61bef32b38ab07543a147cf172b169eae21b26cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/368082
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2022-05-20 15:12:39 +00:00
Xiaodong Liu
0811559ddd runtime: add build tag for common support on linux/loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Ide01fb8a39fe3e890f6cbc5d28f4a1d47eb5d79b
Reviewed-on: https://go-review.googlesource.com/c/go/+/368081
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2022-05-20 15:12:37 +00:00
Xiaodong Liu
2a5ceaaa78 runtime: implement runtime entry for linux/loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I252ecd0b13580c5e71723715023b1951985045f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/342322
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2022-05-20 15:12:31 +00:00
nimelehin
5370494577 runtime: add BenchmarkMemclrRange
This benchmark is added to test improvements in memclr_amd64.
As it is stated in Intel Optimization Manual 15.16.3.3, AVX2-implemented
memclr can produce a skewed result with the branch predictor being
trained by the large loop iteration count.

This benchmark generates sizes between some specified range. This should
help to measure how memclr works when branch predictors may be incorrectly
trained.

Change-Id: I14d173cafe43ca47198ed920e655547a66b3909f
Reviewed-on: https://go-review.googlesource.com/c/go/+/373362
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@google.com>
2022-05-20 13:51:52 +00:00
Keith Randall
d8762b2f45 runtime: fix overflow in PingPongHog test
On 32-bit systems the result of hogCount*factor can overflow.
Use division instead to do comparison.

Update #52207

Change-Id: I429fb9dc009af645acb535cee5c70887527ba207
Reviewed-on: https://go-review.googlesource.com/c/go/+/407415
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2022-05-19 21:33:15 +00:00
Ian Lance Taylor
dd83fd8a70 cmd/dist: pass a -test.timeout option to a host test
For a host test we build the test using "go test -c" and then run the
test binary. A test binary run in this way has no default timeout.
This CL gives it a timeout of 5 minutes, scaled for the target.
We can adjust the timeout if necessary.

For #52998

Change-Id: Ib759142f3e71cbb37ec858182998fc5d4fba7ab6
Reviewed-on: https://go-review.googlesource.com/c/go/+/407374
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2022-05-19 21:32:46 +00:00
Xiaodong Liu
34507e879d runtime/cgo: add cgo function call support for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I8ef0e7f17d6ada3d2f07c81524136b78457e7795
Reviewed-on: https://go-review.googlesource.com/c/go/+/342319
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2022-05-19 21:15:04 +00:00
Xiaodong Liu
a7cc865edb runtime/internal/atomic: add atomic support for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I0333503db044c6f39df2d7f8d9dff213b1361d6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/342320
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-19 21:14:49 +00:00
Daniel Martí
87039c7d34 cmd/go: reference BuildID field from list's -export docs
In https://golang.org/cl/263542 we added BuildID to the Package struct
in the docs for "go list", correctly pointing out that it's only set
when -export is used.

Further down, the doc details the -export flag on its own.
It already mentioned the Export field, and we forgot to add a mention to
BuildID as well. Do that.

Change-Id: I5838a8900edae8012fe333937d86baea3066c5f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/392114
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
2022-05-19 20:54:47 +00:00
Tobias Klauser
a1ceacedd8 net/netip: fix receiver name in Addr.{has,without}Zone comments
Change-Id: I851900cb52abfe75224a9dd9b9760eafd2cfc85f
Reviewed-on: https://go-review.googlesource.com/c/go/+/407175
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-19 20:31:45 +00:00