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57323 Commits

Author SHA1 Message Date
Robert Findley
ac9137f8d3 go/types, types2: do not mutate arguments in NewChecker
CL 507975 resulted in new data races (as reported in #61212), because
the pkg argument to NewChecker was mutated.

Fix this by deferring the recording of the goVersion in pkg until type
checking is actually initiated via a call to Checker.Files.
Additionally, modify types2/check.go to bring it in sync with the
changes in go/types/check.go, and generate the new version_test.go from
the types2 file.

Also move parsing the version into checkFiles, for simplicity.

Fixes #61212

Change-Id: I15edb6c2cff3085622fe7c6a3b0dab531d27bd04
Reviewed-on: https://go-review.googlesource.com/c/go/+/508439
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2023-07-07 19:58:56 +00:00
Michael Munday
158d11196f math: add test that covers riscv64 fnm{add,sub} codegen
Adds a test that triggers the RISC-V fused multiply-add code
generation bug fixed by CL 506575.

Change-Id: Ia3a55a68b48c5cc6beac4e5235975dea31f3faf2
Reviewed-on: https://go-review.googlesource.com/c/go/+/507035
Auto-Submit: M Zhuo <mzh@golangcn.org>
Reviewed-by: M Zhuo <mzh@golangcn.org>
Run-TryBot: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2023-07-07 17:39:26 +00:00
Jonathan Amsterdam
d3d78b4bcc log/slog: handle recursively empty groups
Handlers should not display empty groups.

A group with no attributes is certainly empty. But we also want to
consider a group to be empty if all its attributes are empty groups.
The built-in handlers did not handle this second case properly.
This CL fixes that.

There are two places in the implementation that we need to consider.

For Values of KindGroup, we change the GroupValue constructor to omit
Attrs that are empty groups. A Group is then empty if and only if it
has no Attrs. This avoids a recursive check for emptiness.
It does require allocation, but that doesn't worry us because Group
values should be relatively rare.

For groups established by WithGroup, we avoid opening such groups
unless the Record contains non-empty groups. As we did for values, we
avoid adding empty groups to records in the first place, so we only
need to check that the record has at least one Attr.

We are doing extra work, so we need to make sure we aren't slowing
things down unduly. Benchmarks before and after this change show
minimal differences.

Fixes #61067.

Change-Id: I684c7ca834bbf69210516faecae04ee548846fb7
Reviewed-on: https://go-review.googlesource.com/c/go/+/508436
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-07 15:07:02 +00:00
Achille Roussel
39c5070712 os: do not skip directory entries with zero inodes on wasip1
When building programs to GOOS=wasip1, the program does not have the
guarantees that the underlying directories will come from a file system
where a zero inode value indicates that the entry was deleted but not
yet removed from the directory. The host runtime may be running on
windows or may be exposing virtual user-space file systems that do not
have the concept of inodes. In those setup, we assume that the host
runtime is in charge of dealing with edge cases such as skipping
directory entries with zero inodes when needed, and the guest
application should trust the list of entries that it sees;
therefore, we disable skipping over zero inodes on wasip1.

Change-Id: I99aa562441cdb4182965f270af054cf3cf7f8f20
Reviewed-on: https://go-review.googlesource.com/c/go/+/507915
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
2023-07-06 23:23:41 +00:00
Cherry Mui
e6ec2a34dc runtime: print output on failure in TestMemPprof
If running testprog fails, print the output.

For #60901.

Change-Id: Iee80fb09412ce13bae6ac3589779a8cdf7761765
Reviewed-on: https://go-review.googlesource.com/c/go/+/507978
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2023-07-06 20:35:47 +00:00
Ian Lance Taylor
449ef3795d net: only build cgo_stub.go on unix or wasip1
We were building it for Windows, although Windows code never calls
any of these functions. When using -tags netgo that cause a multiple
definition of cgoAvailable.

Fixes #61153

Change-Id: Ib9e1de7720a8c0dacd6f12002917bf305dfa5405
Reviewed-on: https://go-review.googlesource.com/c/go/+/507655
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2023-07-06 19:37:13 +00:00
Russ Cox
6305d7fdd3 cmd/go: pass GoVersion in vet config
When invoking a vet tool with -vettool (or vet itself),
we need to pass the package's GoVersion to use when
analyzing the package.

The test of this behavior is in the x/tools/go/analysis CL 507880.

For #61176.

Change-Id: I3b5a90fcd19a0adc7fb29366e106e18f722fc061
Reviewed-on: https://go-review.googlesource.com/c/go/+/507976
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
2023-07-06 13:09:30 +00:00
Russ Cox
b490bdc27d go/types: record Config.GoVersion for reporting in Package.GoVersion method
Clients of go/types, such as analyzers, may need to know which
specific Go version a package is written for. Record that information
in the Package and expose it using the new GoVersion method.

Update parseGoVersion to handle the new Go versions that may
be passed around starting in Go 1.21.0: versions like "go1.21.0"
and "go1.21rc2". This is not strictly necessary today, but it adds some
valuable future-proofing.

While we are here, change NewChecker from panicking on invalid
version to saving an error for returning later from Files.
Go versions are now likely to be coming from a variety of sources,
not just hard-coded in calls to NewChecker, making a panic
inappropriate.

For #61174.
Fixes #61175.

Change-Id: Ibe41fe207c1b6e71064b1fe448ac55776089c541
Reviewed-on: https://go-review.googlesource.com/c/go/+/507975
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2023-07-06 13:09:19 +00:00
Merrick Clay
36ea4f9680 log/slog: fix faulty test
Adds an optional close quote in the expected log message regex for TestConnections to prevent failing when the source filepath is surrounded in quotes due to it containing one or more spaces.

Fixes #61161

Change-Id: I0dd71fb4389bff963bbfdc668ef4e4dfe787eafc
Reviewed-on: https://go-review.googlesource.com/c/go/+/508055
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-06 00:01:44 +00:00
Meng Zhuo
3fce111535 cmd/compile: fix FMA negative commutativity of riscv64
According to RISCV manual 11.6:

FMADD x,y,z computes x*y+z and
FNMADD x,y,z => -x*y-z
FMSUB x,y,z => x*y-z
FNMSUB x,y,z => -x*y+z respectively

However our implement of SSA convert FMADD -x,y,z to FNMADD x,y,z which
is wrong and should be convert to FNMSUB according to manual.

Change-Id: Ib297bc83824e121fd7dda171ed56ea9694a4e575
Reviewed-on: https://go-review.googlesource.com/c/go/+/506575
Run-TryBot: M Zhuo <mzh@golangcn.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-05 22:05:44 +00:00
Michael Munday
c8dad424bf math: fix portable FMA when x*y < 0 and x*y == -z
When x*y == -z the portable implementation of FMA copied the sign
bit from x*y into the result. This meant that when x*y == -z and
x*y < 0 the result was -0 which is incorrect.

Fixes #61130.

Change-Id: Ib93a568b7bdb9031e2aedfa1bdfa9bddde90851d
Reviewed-on: https://go-review.googlesource.com/c/go/+/507376
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Michael Munday <mike.munday@lowrisc.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joedian Reid <joedian@golang.org>
2023-07-05 22:05:30 +00:00
zikaeroh
cd6676126b database/sql: prevent internal context error from being returned from Rows.Err()
CL 497675 modified Rows such that context errors are propagated through
Rows.Err(). This caused an issue where calling Close meant that an
internal cancellation error would (eventually) be returned from Err:

1. A caller makes a query using a cancellable context.
2. initContextClose sees that either the query context or the
   transaction context can be canceled, so will need to spawn a
   goroutine to capture their errors.
3. initContextClose derives a context from the query context via
   WithCancel and sets rs.cancel.
4. When a user calls Close, rs.cancel is called. awaitDone's ctx is
   cancelled, which is good, since we don't want it to hang forever.
5. This internal cancellation (after CL 497675) has its error saved on
   contextDone.
6. Later, calling Err will return the error in contextDone if present.

This leads to a race condition depending on how quickly Err is called
after Close.

The docs for Close and Err state that calling Close should have no
affect on the return result for Err. So, a potential fix is to ensure
that awaitDone does not save the error when the cancellation comes from
a Close via rs.cancel.

This CL does that, using a new context not derived from the query
context, whose error is ignored as the query context's error used to be
before the original bugfix.

The included test fails before the CL, and passes afterward.

Fixes #60932

Change-Id: I2bf4c549efd83d62b86e298c9c45ebd06a3ad89a
Reviewed-on: https://go-review.googlesource.com/c/go/+/505397
Auto-Submit: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2023-07-05 17:10:36 +00:00
Michael Anthony Knyszek
b2215e49c7 runtime,runtime/metrics: clarify OS stack metrics
There are some subtle details here about measuring OS stacks in cgo
programs. There's also an expectation about magnitude in the MemStats
docs that isn't in the runtime/metrics docs. Fix both.

Fixes #54396.

Change-Id: I6b60a62a4a304e6688e7ab4d511d66193fc25321
Reviewed-on: https://go-review.googlesource.com/c/go/+/502156
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-07-05 15:21:49 +00:00
Keith Randall
e126572f8a runtime: have ReadMemStats do a nil check before switching stacks
This gives the user a better stack trace experience. No need to
expose them to runtime.systemstack and friends.

Fixes #61158

Change-Id: I4f423f82e54b062773067c0ae64622e37cb3948b
Reviewed-on: https://go-review.googlesource.com/c/go/+/507755
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2023-07-04 16:54:39 +00:00
Oleksandr Redko
e4ed92a355 os, syscall: update unreachable link about =C: envs
Change-Id: I185dec133599f9c69fda7563697bbc33e433fb78
Reviewed-on: https://go-review.googlesource.com/c/go/+/507135
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2023-07-04 15:31:54 +00:00
Meng Zhuo
5c1a15df41 test/codegen: enable Mul2 DivPow2 test for riscv64
Change-Id: Ice0bb7a665599b334e927a1b00d1a5b400c15e3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/506035
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
2023-07-04 13:33:45 +00:00
Michael Pratt
5b72f45dd1 runtime: check GOFLAGS not GCFLAGS
GCFLAGS doesn't have any defined meaning. cmd/dist enables
mayMoreStackPreempt with GOFLAGS.

For #55160.

Change-Id: I7ac71e4a1a983a56bd228ab5d24294db5cc595f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/507359
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
2023-06-30 22:02:00 +00:00
Chris O'Hara
18e17e2cb1 net: enable pure Go resolver for wasip1
Top-level functions in the net package that only read files,
for example LookupPort(...), or LookupIP(host) where host resides
in /etc/hosts, now work on wasip1.

If the application has the ability to create sockets (for example,
when using a sockets extension to WASI preview 1), it's now
possible to do name resolution by passing a custom Dial function
to a Resolver instance.

Change-Id: I923886f67e336820bc89f09ea1855387c8dac61a
Reviewed-on: https://go-review.googlesource.com/c/go/+/500579
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Randy Reddig <ydnar@shaderlab.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-06-29 23:06:46 +00:00
Chris O'Hara
1e97c51536 syscall: stub Getrlimit on wasip1
This is a prerequisite to enabling the pure Go resolver for
wasip1.

Change-Id: Iecd8a18ce4c9eb69a697d29930bedb7175b4f0ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/500577
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-06-29 23:05:01 +00:00
Jes Cok
683f51d307 cmd/asm/internal/lex: fix comment, remove the first "has"
Change-Id: I429f0fa6c99ef576fe83c7bd0d1c1e176ecbb179
GitHub-Last-Rev: fb581b7f27
GitHub-Pull-Request: golang/go#61066
Reviewed-on: https://go-review.googlesource.com/c/go/+/507097
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2023-06-29 22:49:50 +00:00
Robert Griesemer
2db31efdba cmd/compile/internal/types2: make TestIssue43124 match the go/types version
Replace the (flaky) types2.TestIssue43124 with the code of the
(stable) go/types version of this test.

While at it, replace a handful of syntax.Pos{} with the equivalent
nopos, to further reduce differences between the two versions of
the issues_test.go file.

For #61064.

Change-Id: I69f3e4627a48c9928e335d67736cb875ba3835fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/507215
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
2023-06-29 18:29:51 +00:00
Damien Neil
499458f7ca net/http: validate Host header before sending
Verify that the Host header we send is valid.
Avoids surprising behavior such as a Host of "go.dev\r\nX-Evil:oops"
adding an X-Evil header to HTTP/1 requests.

Add a test, skip the test for HTTP/2. HTTP/2 is not vulnerable to
header injection in the way HTTP/1 is, but x/net/http2 doesn't validate
the header and will go into a retry loop when the server rejects it.
CL 506995 adds the necessary validation to x/net/http2.

For #60374

Change-Id: I05cb6866a9bead043101954dfded199258c6dd04
Reviewed-on: https://go-review.googlesource.com/c/go/+/506996
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
2023-06-29 17:00:06 +00:00
Than McIntosh
fe73c186eb cmd/{go,compile}: run gofmt
Ran gofmt on a couple of Go source files that needed it.

Change-Id: I0e9f78831f531a728b892a63c6e0c517d92b11a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/507156
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-06-29 16:02:11 +00:00
Chris O'Hara
da5d8fdd0c runtime: run wasip1 tests with wazero
The latest wazero release supports non-blocking I/O and pre-opened
sockets. Unmask the relevant wasip1 tests so that there are multiple
WebAssembly runtimes exercising these code paths.

Change-Id: I8506ab35186f98fde2cd3ce84634d5fcb7b053f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/503595
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
2023-06-29 15:35:27 +00:00
Ben Hoyt
411c99671a slices, maps: add examples; doc comment fixes
There are currently no examples in the new slices and maps package, so
add some. This adds examples for most functions in the slices package
except the very obvious ones, and adds examples for the DeleteFunc and
EqualFunc functions in the maps package.

Also clarify/correct a few doc comments:

* EqualFunc takes an "equality" function, not a "comparison" function
* It's confusing for Delete and DeleteFunc to say they "do not create a
  new slice", as they do return a new slice. They already say they
  "return the modified slice" which is enough.
* Similar for Compact, and mention that it returns the modified slice
  (and say why)
* Note that CompactFunc keeps the first element in equal runs
* Say what cmp is in SortStableFunc and IsSortedFunc
* Say that MinFunc and MaxFunc return the first value

Change-Id: I59c7bb1c7cabc4986d81018a5aaf5b712d3310f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/505095
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-06-29 15:34:32 +00:00
Mark Ryan
03cd8a7b0e internal/bytealg: fix alignment code in equal_riscv64.s
The riscv64 implementation of equal has an optimization that is
applied when both pointers share the same alignment but that alignment
is not 8 bytes.  In this case it tries to align both pointers to an 8 byte boundaries,
by individually comparing the first few bytes of each buffer.  Unfortunately,
the existing code is incorrect.  It adjusts the pointers by the wrong number
of bytes resulting, in most cases, in pointers that are not 8 byte aligned.

This commit fixes the issue by individually comparing the first
(8 - (pointer & 7)) bytes of each buffer rather than the first
(pointer & 7) bytes.

This particular optimization is not covered by any of the existing
benchmarks so a new benchmark, BenchmarkEqualBothUnaligned,
is provided.  The benchmark tests the case where both pointers have
the same alignment but may not be 8 byte aligned.  Results of the
new benchmark along with some of the existing benchmarks generated on
a SiFive HiFive Unmatched A00 with 16GB of RAM running Ubuntu 23.04
are presented below.

Equal/0-4                                 3.356n ± 0%    3.357n ± 0%        ~ (p=0.840 n=10)
Equal/1-4                                 63.91n ± 7%    65.97n ± 5%   +3.22% (p=0.029 n=10)
Equal/6-4                                 72.94n ± 5%    76.09n ± 4%        ~ (p=0.075 n=10)
Equal/9-4                                 84.61n ± 7%    85.83n ± 3%        ~ (p=0.315 n=10)
Equal/15-4                                103.7n ± 2%    102.9n ± 4%        ~ (p=0.739 n=10)
Equal/16-4                                89.14n ± 3%   100.40n ± 4%  +12.64% (p=0.000 n=10)
Equal/20-4                                107.8n ± 3%    106.8n ± 3%        ~ (p=0.725 n=10)
Equal/32-4                                63.95n ± 8%    67.79n ± 7%        ~ (p=0.089 n=10)
Equal/4K-4                                1.256µ ± 1%    1.254µ ± 0%        ~ (p=0.925 n=10)
Equal/4M-4                                1.231m ± 0%    1.230m ± 0%   -0.04% (p=0.011 n=10)
Equal/64M-4                               19.77m ± 0%    19.78m ± 0%        ~ (p=0.052 n=10)
EqualBothUnaligned/64_0-4                 43.70n ± 4%    44.40n ± 5%        ~ (p=0.529 n=10)
EqualBothUnaligned/64_1-4                6957.5n ± 0%    105.9n ± 1%  -98.48% (p=0.000 n=10)
EqualBothUnaligned/64_4-4                 100.1n ± 2%    101.5n ± 4%        ~ (p=0.149 n=10)
EqualBothUnaligned/64_7-4               6965.00n ± 0%    95.60n ± 4%  -98.63% (p=0.000 n=10)
EqualBothUnaligned/4096_0-4               1.233µ ± 1%    1.225µ ± 0%   -0.65% (p=0.015 n=10)
EqualBothUnaligned/4096_1-4             584.226µ ± 0%    1.277µ ± 0%  -99.78% (p=0.000 n=10)
EqualBothUnaligned/4096_4-4               1.270µ ± 1%    1.268µ ± 0%        ~ (p=0.105 n=10)
EqualBothUnaligned/4096_7-4             584.944µ ± 0%    1.266µ ± 1%  -99.78% (p=0.000 n=10)
EqualBothUnaligned/4194304_0-4            1.241m ± 0%    1.236m ± 0%   -0.38% (p=0.035 n=10)
EqualBothUnaligned/4194304_1-4          600.956m ± 0%    1.238m ± 0%  -99.79% (p=0.000 n=10)
EqualBothUnaligned/4194304_4-4            1.239m ± 0%    1.241m ± 0%   +0.22% (p=0.007 n=10)
EqualBothUnaligned/4194304_7-4          601.036m ± 0%    1.239m ± 0%  -99.79% (p=0.000 n=10)
EqualBothUnaligned/67108864_0-4           19.79m ± 0%    19.78m ± 0%        ~ (p=0.393 n=10)
EqualBothUnaligned/67108864_1-4         9616.61m ± 0%    19.82m ± 0%  -99.79% (p=0.000 n=10)
EqualBothUnaligned/67108864_4-4           19.82m ± 0%    19.82m ± 0%        ~ (p=0.971 n=10)
EqualBothUnaligned/67108864_7-4         9616.34m ± 0%    19.86m ± 0%  -99.79% (p=0.000 n=10)
geomean                                   38.38µ         7.194µ       -81.26%

Change-Id: I4caab6c3450bd7e2773426b08b70bbc37fbe4e5f
Reviewed-on: https://go-review.googlesource.com/c/go/+/500855
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-06-29 02:34:59 +00:00
Cuong Manh Le
8b5fe5980c cmd/compile: handle min/max correctly in mayCall
CL 500575 changed mayCall to return "false" for min/max builtin.

However, with string or float, min/max requires runtime call, so mayCall
should return true instead. This's probably not a big problem, because
CL 506115 makes order pass handle min/max correctly. But it's still
better to do it the right way.

Updates #60582

Change-Id: I9779ca62bebd0f95e52ad5fa55b9160dc35b33aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/506855
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-06-28 21:18:31 +00:00
Matthew Dempsky
79d4defa75 cmd/compile/internal/ssagen: fix min/max codegen, again
The large-function phi placement algorithm evidently doesn't like the
same pseudo-variable being used to represent expressions of varying
types.

Instead, use the same tactic as used for "valVar" (ssa.go:6585--6587),
which is to just generate a fresh marker node each time.

Maybe we could just use the OMIN/OMAX nodes themselves as the key
(like we do for OANDAND/OOROR), but that just seems needlessly risky
for negligible memory savings. Using fresh marker values each time
seems obviously safe by comparison.

Fixes #61041.

Change-Id: Ie2600c9c37b599c2e26ae01f5f8a433025d7fd08
Reviewed-on: https://go-review.googlesource.com/c/go/+/506679
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2023-06-28 16:07:47 +00:00
Russ Cox
a3093eca64 cmd/go: enable slog vet check during 'go test'
The slog check is new and no existing code uses slog (it's new too),
so there are no concerns about false positives in existing code.
Enable it by default.

Change-Id: I4fc1480eeb5a3acc9e5e095e9d5428f5ce04b121
Reviewed-on: https://go-review.googlesource.com/c/go/+/505915
Run-TryBot: Bryan Mills <bcmills@google.com>
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Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-06-28 02:41:38 +00:00
Ian Lance Taylor
6691f438c3 cmd/dist, internal/abi: support bootstrapping with gccgo
The required gc bootstrap compiler, 1.17, has an internal/lazyregexp
package. It permits that package to be imported by internal/profile
while bootstrapping. The gccgo compiler also has an internal/lazyregexp
package, but it does not permit the gc compiler to import it.

Permit bootstrapping with gccgo by adding internal/lazyregexp to the
list of bootstrap directories.

The gccgo compiler recognizes the magic functions internal/abi.FuncPCABI0
and FuncPCABIInternal, but only in the internal/abi package, not
in the bootstrapping internal/abi package.

Permit bootstrapping with gccgo by adding definitions of those functions
with build tags so that they are only used by gccgo.

Fixes #60913

Change-Id: I3a78848d545db13314409d170d63f4cc737ca12e
Reviewed-on: https://go-review.googlesource.com/c/go/+/505036
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
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2023-06-27 21:15:37 +00:00
Hiro
942c1c12d8 runtime: fix trace.Stop deadlock when built with faketime
For #60806

Change-Id: I1ac18a6c7c703a1d6c4cd80f220059ba0be51e09
GitHub-Last-Rev: d300ca3f31
GitHub-Pull-Request: golang/go#60834
Reviewed-on: https://go-review.googlesource.com/c/go/+/503356
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2023-06-27 18:21:24 +00:00
Cuong Manh Le
4ad4128d3c cmd/compile: fix bad order of evaluation for min/max builtin
For float or string, min/max builtin performs a runtime call, so we need
to save its result to temporary variable. Otherwise, the runtime call
will clobber closure's arguments currently on the stack when passing
min/max as argument to closures.

Fixes #60990

Change-Id: I1397800f815ec7853182868678d0f760b22afff2
Reviewed-on: https://go-review.googlesource.com/c/go/+/506115
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2023-06-27 18:18:23 +00:00
Joe Tsai
4f36f7e4dd encoding: document that base32 and base64 do not use UTF-8
The invention of base32 and base64 predates the invention of UTF-8
and was never meant to output valid UTF-8.
By default, the output is always valid ASCII (and thus valid UTF-8)
except when the user specifies an alphabet or padding value
that is larger than '\x7f'. If that is done,
then the exact byte symbol is used rather than the UTF-8 encoding.

Fixes #60689

Change-Id: I4ec88d974ec0658ad1a578bbd65a809e27c73ea7
Reviewed-on: https://go-review.googlesource.com/c/go/+/505237
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2023-06-27 17:27:30 +00:00
qmuntal
8008c0840f syscall: clarify which handles are affected by SysProcAttr.NoInheritHandles
SysProcAttr.NoInheritHandles doc comment is not clear about which
handles are affected by it. This CL clarifies that it not only affects
the ones passed in AdditionalInheritedHandles, but also the ones
passed in ProcAttr.Files, which are required to be stderr, stdin and
stdout when calling syscall.StartProcess.

Updates #60942

Change-Id: I5bc5b3604b6db04b83f6764d5c5ffbdafeeb22fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/505515
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Reviewed-by: Carlos Amedee <carlos@golang.org>
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2023-06-27 16:16:24 +00:00
Chris O'Hara
13529cc5f4 syscall: try non-blocking stdio on wasip1
Try to set stdio to non-blocking mode before the os package
calls NewFile for each fd. NewFile queries the non-blocking flag
but doesn't change it, even if the runtime supports non-blocking
stdio. Since WebAssembly modules are single-threaded, blocking
system calls temporarily halt execution of the module. If the
runtime supports non-blocking stdio, the Go runtime is able to
use the WASI net poller to poll for read/write readiness and is
able to schedule goroutines while waiting.

Change-Id: I1e3ce68a414e3c5960ce6a27fbfd38556e59c3dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/498196
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Achille Roussel <achille.roussel@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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2023-06-27 01:09:18 +00:00
Robert Griesemer
1dbbafc70f go/types, types2: replace TODO with clarifying comment
This resolves an open question.
No non-comment code changes.

Change-Id: Idc92794090b2dde694394d1fcd916f6ea61f03e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/506395
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2023-06-26 21:06:37 +00:00
Tobias Klauser
7cc0740596 slices: add godoc links
Change-Id: I79d2bab2275f123636b63e87533ae9dad69ee00f
Reviewed-on: https://go-review.googlesource.com/c/go/+/506135
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2023-06-26 19:11:18 +00:00
Robert Griesemer
d49017a7c3 go/types, types2: fix interface unification
When unification of two types succeeds and at least one of them
is an interface, we must be more cautious about when to accept
the unification, to avoid order dependencies and unexpected
inference results.

The changes are localized and only affect matching against
interfaces; they further restrict what are valid unifications
(rather than allowing more code to pass). We may be able to
remove some of the restriotions in a future release.

See comments in code for a detailed description of the changes.

Also, factored out "asInterface" functionality into a function
to avoid needless repetition in the code.

Fixes #60933.
Fixes #60946.

Change-Id: I923f7a7c1a22e0f4fd29e441e016e7154429fc5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/505396
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2023-06-26 18:33:36 +00:00
Cuong Manh Le
b3ca8d2b3c types2, go/types: record final type for min/max arguments
Fixes #60991

Change-Id: I6130ccecbdc209996dbb376491be9df3b8988327
Reviewed-on: https://go-review.googlesource.com/c/go/+/506055
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Reviewed-by: Robert Findley <rfindley@google.com>
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2023-06-26 17:08:05 +00:00
Robert Griesemer
ee361ce66c go/types, types2: more readable inference trace
Print the unification mode in human-readable form.
Use a tab and // instead of ()'s to show unification mode
and whether operands where swapped.

These changes only affect inference trace output, which is
disabled by default. For easier debugging.

For #60933.

Change-Id: I95299c6e09b90670fc45addc4f9196b6cdd3b59f
Reviewed-on: https://go-review.googlesource.com/c/go/+/505395
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Reviewed-by: Robert Griesemer <gri@google.com>
2023-06-26 15:43:55 +00:00
Kota
9f6e87ff74 doc/go1.21: document changes in crypto/x509
RevocationList.RevokedCertificates has been deprecated and
replaced with the new RevocationList.RevokedCertificateEntries field,
not RevocationList.Entries.

Change-Id: I36053e0d67a9997264483d1e04e31774fbab8702
GitHub-Last-Rev: a9f6949b05
GitHub-Pull-Request: golang/go#60984
Reviewed-on: https://go-review.googlesource.com/c/go/+/505935
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2023-06-26 14:53:03 +00:00
Ian Lance Taylor
f5015b5164 doc/go1.21: context.Background and TODO may now appear equal
Fixes #60978

Change-Id: I3e4bd366dc30ac435698b8f17170695330034683
Reviewed-on: https://go-review.googlesource.com/c/go/+/505795
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Reviewed-by: Sameer Ajmani <sameer@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-06-26 12:57:55 +00:00
Keith Randall
a031f4ef83 cmd/compile: fix min/max builtin code generation
Our large-function phi placement algorithm is incompatible with phi
opcodes already existing in the SSA representation. Instead, use simple
variable assignments and have the phi placement algorithm place the phis
we need for min/max.

Turns out the small-function phi placement algorithm doesn't have this
sensitivity, so this bug only occurs in large functions (>500 basic blocks).

Maybe we should document/check that no phis are present when we start
phi placement (regardless of size).  Leaving for a potential separate CL.

We should probably also fix the placement algorithm to handle existing
phis correctly.  But this CL is probably a lot smaller/safer than
messing with phi placement.

Fixes #60982

Change-Id: I59ba7f506c72b22bc1485099a335d96315ebef67
Reviewed-on: https://go-review.googlesource.com/c/go/+/505756
Reviewed-by: Keith Randall <khr@google.com>
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2023-06-24 05:24:25 +00:00
Ian Lance Taylor
ea927e560d slices: clarify MinFunc/MaxFunc result for equal elements
They should return the first of equal elements. No such clarification
is required for Min/Max as for them equal elements are indistinguishable.

For #60091

Change-Id: Iad58115d482add852c811e993131702b5b3bec5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/505796
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2023-06-24 00:50:42 +00:00
Roland Shoemaker
3619255777 crypto/x509: rename duplicated test
Rename the old TestPlatformVerifier to TestPlatformVerifierLegacy, and
add TODO about removing it once the synthetic root is widely deployed on
builders.

Updates #52108

Change-Id: I6cdba268e4738804c7f76ea18c354470b3e0318c
Reviewed-on: https://go-review.googlesource.com/c/go/+/505755
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2023-06-23 19:48:23 +00:00
Jelle van den Hooff
48dbb6227a runtime: set raceignore to zero when starting a new goroutine
When reusing a g struct the runtime did not reset
g.raceignore. Initialize raceignore to zero when initially
setting racectx.

A goroutine can end with a non-zero raceignore if it exits
after calling runtime.RaceDisable without a matching
runtime.RaceEnable. If that goroutine's g is later reused
the race detector is in a weird state: the underlying
g.racectx is active, yet g.raceignore is non-zero, and
raceacquire/racerelease which check g.raceignore become
no-ops. This causes the race detector to report races when
there are none.

Fixes #60934

Change-Id: Ib8e412f11badbaf69a480f03740da70891f4093f
Reviewed-on: https://go-review.googlesource.com/c/go/+/505055
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2023-06-23 16:46:25 +00:00
Filippo Valsorda
3adcce5ae7 crypto: document non-determinism of GenerateKey
Fixes #58637

Change-Id: I9eb3905d5b35ea22e22e1d8eb8c33594eac487fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/505155
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2023-06-23 16:12:46 +00:00
Cuong Manh Le
6dce882b3a cmd/compile: scanning closures body when visiting wrapper function
CL 410344 fixed missing method value wrapper, by visiting body of
wrapper function after applying inlining pass.

CL 492017 allow more inlining of functions that construct closures,
which ends up making the wrapper function now inlineable, but can
contain closure nodes that couldn't be inlined. These closures body may
contain OMETHVALUE nodes that we never seen, thus we need to scan
closures body for finding them.

Fixes #60945

Change-Id: Ia1e31420bb172ff87d7321d2da2989ef23e6ebb6
Reviewed-on: https://go-review.googlesource.com/c/go/+/505255
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2023-06-23 14:29:16 +00:00
Cuong Manh Le
164aceea08 log/slog: fix broken link to AnyValue in comment
Change-Id: Ida52a2bf6a415017942bf9ccd74a1ea9ed02bc46
Reviewed-on: https://go-review.googlesource.com/c/go/+/505535
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2023-06-23 12:15:52 +00:00
Christopher Taylor
82e17c4d11 log/slog: fix broken link to Record.Clone in package docs
Change-Id: If8b937fa9db89a537ad7d4ccb8c04f84d2cff3db
GitHub-Last-Rev: fdd4338118
GitHub-Pull-Request: golang/go#60938
Reviewed-on: https://go-review.googlesource.com/c/go/+/505075
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2023-06-23 12:15:01 +00:00