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Commit Graph

58125 Commits

Author SHA1 Message Date
Joel Sing
57c1dfd2ab runtime: add runtime support for openbsd/riscv64 port
Updates #55999

Change-Id: I0e80f80d49696a00d979f85230d482e24d4c2d7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/518626
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Aaron Bieber <deftly@gmail.com>
2023-10-04 02:55:17 +00:00
Tobias Klauser
65e1fc7f19 time: fix Time godoc
The additional empty line was inadvertently introduced by CL 526676,
causing only part of the Time godoc to be rendered on pkg.go.dev.

Change-Id: I868315752eb160ebaab227c8b5369054c557cb7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/531877
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
2023-10-03 21:26:09 +00:00
Robert Griesemer
51cb717d27 go/types, types2: don't implicitly modify an argument function's type
See the comment in the (very small) fix for a detailed description.
Use the opportunity to introduce a generic clone function which may
be useful elsewhere.

Fixes #63260.

Change-Id: Ic63c6b8bc443011b1a201908254f7d062e1aec71
Reviewed-on: https://go-review.googlesource.com/c/go/+/532157
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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2023-10-03 21:21:52 +00:00
cui fliter
dc523c8ddf cmd: add a new analyzer for check missing values after append
If there is no second parameter added during append, there will be no prompt when executing go vet. Add an analyzer to detect this situation

Update #60448

Change-Id: If9848835424f310c54e3e9377aaaad4a1516871a
Reviewed-on: https://go-review.googlesource.com/c/go/+/498416
Run-TryBot: shuang cui <imcusg@gmail.com>
Run-TryBot: Tim King <taking@google.com>
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Reviewed-by: Alan Donovan <adonovan@google.com>
2023-10-03 20:55:20 +00:00
Paul E. Murphy
e9379a8f8b cmd/internal/asm/ppc64: support 34b ADD/MOVD $const, Rx
For constant signed values which require 34b to represent,
the assembler will generate a pli instruction on
linux/power10/PPC64 instead of loading a constant.

Similarly, ADD is extended to support 34b signed constants.
On linux/power10/PPC64, this generates a paddi instruction.
For assembler consistency, a second form is added if paddi
cannot be used. The second form is provided for assembly
writers.

Change-Id: I98144306af766b02fbbe36b72856a23cdf51d247
Reviewed-on: https://go-review.googlesource.com/c/go/+/528317
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Reviewed-by: Eli Bendersky <eliben@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
2023-10-03 20:22:46 +00:00
Mauri de Souza Meneguzzo
6bcf176829 runtime/internal/atomic: add ppc64x operators for And/Or
These primitives will be used by the new And/Or sync/atomic apis.

For #61395

Change-Id: I9ad92634add0357092e49b5a4a40c177e242a0b6
GitHub-Last-Rev: cf3fb0dce6
GitHub-Pull-Request: golang/go#63294
Reviewed-on: https://go-review.googlesource.com/c/go/+/531716
Reviewed-by: Eli Bendersky <eliben@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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Reviewed-by: Paul Murphy <murp@ibm.com>
2023-10-03 19:51:23 +00:00
qiulaidongfeng
3bd30298dd regexp/syntax: use min func
Change-Id: I679c906057577d4a795c07a2f572b969c3ee14d5
GitHub-Last-Rev: fba371d2d6
GitHub-Pull-Request: golang/go#63350
Reviewed-on: https://go-review.googlesource.com/c/go/+/532218
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Reviewed-by: Michael Pratt <mpratt@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-03 19:49:07 +00:00
Xianmiao Qu
d98f74b31e cmd/compile/internal: intrinsify publicationBarrier on riscv64
This enables publicationBarrier to be used as an intrinsic
on riscv64, optimizing the required function call and return
instructions for invoking the "runtime.publicationBarrier"
function.

This function is called by mallocgc. The benchmark results for malloc tested on Lichee-Pi-4A(TH1520, RISC-V 2.0G C910 x4) are as follows.

goos: linux
goarch: riscv64
pkg: runtime
                    │   old.txt   │              new.txt               │
                    │   sec/op    │   sec/op     vs base               │
Malloc8-4             92.78n ± 1%   90.77n ± 1%  -2.17% (p=0.001 n=10)
Malloc16-4            156.5n ± 1%   151.7n ± 2%  -3.10% (p=0.000 n=10)
MallocTypeInfo8-4     131.7n ± 1%   130.6n ± 2%       ~ (p=0.165 n=10)
MallocTypeInfo16-4    186.5n ± 2%   186.2n ± 1%       ~ (p=0.956 n=10)
MallocLargeStruct-4   1.345µ ± 1%   1.355µ ± 1%       ~ (p=0.093 n=10)
geomean               216.9n        214.5n       -1.10%


Change-Id: Ieab6c02309614bac5c1b12b5ee3311f988ff644d
Reviewed-on: https://go-review.googlesource.com/c/go/+/531719
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Joel Sing <joel@sing.id.au>
2023-10-03 19:29:38 +00:00
mstmdev
1b5cfc6ca6 database/sql: use the built-in min function
Change-Id: Ib6a0e1e1583e45e3d239455e8b131c81602b2d5d
GitHub-Last-Rev: dc82635562
GitHub-Pull-Request: golang/go#63200
Reviewed-on: https://go-review.googlesource.com/c/go/+/530875
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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2023-10-03 19:29:35 +00:00
Jonathan Amsterdam
90276c268b net/http: document new ServeMux patterns
Updates #61410.

Change-Id: Ib9dd8ebca43cec6e27c6fdfcf01ee6a1539c2fa0
Reviewed-on: https://go-review.googlesource.com/c/go/+/530481
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2023-10-03 18:06:38 +00:00
Joel Sing
95ef1e7efc cmd/link: enable linking on openbsd/riscv64
Updates #55999

Change-Id: I6e48e6649e19a9b2d776745c05eefb3995b6dd00
Reviewed-on: https://go-review.googlesource.com/c/go/+/518625
Reviewed-by: Aaron Bieber <deftly@gmail.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Keith Randall <khr@golang.org>
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2023-10-03 17:46:04 +00:00
qiulaidongfeng
53827ba49e cmd/compile,runtime: remove runtime.mulUintptr
For #48798

Change-Id: I3e928d3921cfd5a7bf35b23d0ae6442aa6d2d482
GitHub-Last-Rev: b101a8a54f
GitHub-Pull-Request: golang/go#63349
Reviewed-on: https://go-review.googlesource.com/c/go/+/532355
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Reviewed-by: Martin Möhrmann <moehrmann@google.com>
2023-10-03 16:35:23 +00:00
Ian Lance Taylor
638e0d36d2 syscall: return pointer from test function OrigRlimitNofile
Change-Id: I8740a2a7ebb3045d8daa97bcb0da7f31f6f7b881
Reviewed-on: https://go-review.googlesource.com/c/go/+/531996
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-03 16:01:10 +00:00
Tobias Klauser
f79c99fe8a internal/syscall/unix: implement Eaccess on netbsd
Like on linux and freebsd, use faccessat(AT_FDCWD, path, mode, AT_EACCESS)

Change-Id: Ia76ba67023b6deba6f0cdaf30a0b9cee0c140bb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/531876
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2023-10-03 14:13:33 +00:00
Brendan Jackman
98289021f3 time: clarify docs to avoid date calculation pitfalls
I recently reviewed some code that did time calculations using
`time.UnixMicro(0).UTC()`. I commented that because time calculations
are independent of the location, they should drop the `.UTC()`, and they
replied that it made their tests fail.

I looked into it and eventually discovered it was because they were
using AddDate. Dramatically simplified, their code did something like:

    orig := time.Date(2013, time.March, 23, 12, 00, 0, 0, time.UTC)
    want := time.Date(2013, time.March, 23, 0, 0, 0, 0, time.UTC)

    epoch := time.UnixMicro(0)

    days := int(orig.Sub(epoch).Hours() / 24)

    got := epoch.AddDate(0, 0, days)
    if !got.Equal(want) {
        t.Errorf("ay caramba: %v vs %v", got.UTC(), want.UTC())
    }

The issue is that their tests run in Pacific time, which is currently
PST (UTC-8) but was PDT (UTC-7) in January 1970.

It turns out they were implementing some business policy that really
cares abut calendar days so AddDate is correct, but it's certainly a bit
confusing!

The idea with this change is to remove the risk that readers make a
false shortcut in their mind: "Locations do not affect time
calculations". To do this we remove some text from the core time.Time
doc and shift it to the areas of the library that deal with these
intrinsically confusing operations.

Change-Id: I8200e9edef7d1cdd8516719e34814eb4b78d30a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/526676
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-03 14:10:22 +00:00
cui fliter
36b14a78b5 cmd: fix mismatched symbols
Change-Id: I6365cdf22ad5e669908519d0ee8b78d76ae8f1b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/532075
Reviewed-by: Than McIntosh <thanm@google.com>
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2023-10-03 12:57:25 +00:00
Daniel Martí
352c8835e7 make.bash: use [[ rather than [
[[ is a compound command part of the language with structure,
whereas [ is simply a standard program with string arguments.
The former has a few significant advantages over the latter:

* Better syntax, e.g. && and || rather than -a and -o,
  as well as == rather than = for comparisons
* No need for fork+exec to evaluate each conditional
* Forgetting the closing token is an early parse error

The only advantage of [ over [[ is that [[ is Bash syntax,
whereas [ and "test" are portable POSIX Shell utilities.
However, this is a Bash script, so that is not a concern.

Change-Id: I8a4bdd16845bd67bf67a348d7d96d45d5b131d85
Reviewed-on: https://go-review.googlesource.com/c/go/+/531875
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2023-10-03 06:40:46 +00:00
Michael Pratt
122b35e838 syscall: copy original rlimit before modifying
CL 531516 converted origRlimitNofile from an atomic.Value to
atomic.Pointer[Rlimit]. i.e., it changed from storing a value to storing
a pointer.

After storing a pointer to lim, the remainder of this function
immediately modifies it, thus mutating the value pointer to by
origRlimitNofile (and thus defeating the point of origRlimitNofile).

This broke the android-amd64-emu builder because it is (apparently) the
only builder where the original RLIMIT_NOFILE Cur != Max.
TestRlimitRestored is skipped on every other builder.

Change-Id: I12076350eeddfd221823ad651e7e7eca59d2bdcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/532100
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2023-10-02 23:19:38 +00:00
Mateusz Poliwczak
ef3171c5eb net: handle the network parameter properly in LookupPort
The cgo version (unix) is populating the GetAddrInfo hints
based on the network parameter, but windows not quite.

This change populates the hints the same way as the
cgo unix version does now.

This bug was spotted by Bryan in CL 530415.
https://go-review.googlesource.com/c/go/+/530415/comment/76640dc7_ed0409ca/

Change-Id: I6fc29b1e4cdc879123ab0f5a624b6f37c68c00ba
GitHub-Last-Rev: eaa616378b
GitHub-Pull-Request: golang/go#63284
Reviewed-on: https://go-review.googlesource.com/c/go/+/531635
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2023-10-02 23:13:53 +00:00
Cherry Mui
340a4f55c4 runtime: use smaller fields for mspan.freeindex and nelems
mspan.freeindex and nelems can fit into uint16 for all possible
values. Use uint16 instead of uintptr.

Change-Id: Ifce20751e81d5022be1f6b5cbb5fbe4fd1728b1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/451359
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2023-10-02 20:39:21 +00:00
Jonathan Amsterdam
32b6d2d9a8 net/http: add a test for an empty ServeMux
Make sure a ServeMux with no patterns is well-behaved.

Updates #61410.

Change-Id: Ib3eb85b384e1309e785663902d2c45ae01e64807
Reviewed-on: https://go-review.googlesource.com/c/go/+/530479
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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2023-10-02 20:28:47 +00:00
Jonathan Amsterdam
eb070d7483 net/http: add GODEBUG setting for old ServeMux behavior
Add the GODEBUG setting httpmuxgo121.
When set to "1", ServeMux behaves exactly like it did in Go 1.21.

Implemented by defining a new, unexported type, serveMux121, that
uses the original code.

Updates #61410.

Change-Id: I0a9d0fe2a2286e442d680393e62895ab50683cea
Reviewed-on: https://go-review.googlesource.com/c/go/+/530461
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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2023-10-02 20:28:30 +00:00
Michael Anthony Knyszek
765dfb00b2 runtime: delete hugepage tracking dead code
After the previous CL, this is now all dead code. This change is
separated out to make the previous one easy to backport.

For #63334.
Related to #61718 and #59960.

Change-Id: I109673ed97c62c472bbe2717dfeeb5aa4fc883ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/532117
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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2023-10-02 18:32:49 +00:00
Michael Anthony Knyszek
595deec3dd runtime: don't eagerly collapse hugepages
This has caused performance issues in production environments.

Disable it until further notice.

Fixes #63334.
Related to #61718 and #59960.

Change-Id: If84c5a8685825d43c912a71418f2597e44e867e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/531816
Reviewed-by: Michael Pratt <mpratt@google.com>
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2023-10-02 18:30:51 +00:00
Joel Sing
0362f5ba14 cmd/dist,internal/platform: add openbsd/riscv64 port
Updates #55999

Change-Id: I3c07f776919e36e4c1fdc5346f7622e5901a2902
Reviewed-on: https://go-review.googlesource.com/c/go/+/518624
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Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
2023-10-02 18:30:01 +00:00
qiulaidongfeng
a36070cbd5 go/printer: use max/min func
Change-Id: I2f708bca0c1e26fb63083731927d5d6a51d41690
GitHub-Last-Rev: 27d2000103
GitHub-Pull-Request: golang/go#63320
Reviewed-on: https://go-review.googlesource.com/c/go/+/531915
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2023-10-02 17:35:54 +00:00
Roland Shoemaker
c9c885f92f html/template: support parsing complex JS template literals
This change undoes the restrictions added in CL 482079, which added a
blanket ban on using actions within JS template literal strings, and
adds logic to support actions while properly applies contextual escaping
based on the correct context within the literal.

Since template literals can contain both normal strings, and nested JS
contexts, logic is required to properly track those context switches
during parsing.

ErrJsTmplLit is deprecated, and the GODEBUG flag jstmpllitinterp no
longer does anything.

Fixes #61619

Change-Id: I0338cc6f663723267b8f7aaacc55aa28f60906f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/507995
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2023-10-02 15:18:39 +00:00
Jonathan Amsterdam
deb8e29000 log/slog: JSONHandler elides empty groups even with replacement
Previously, the built-in handlers assumed a group was empty if and
only if it had no attributes. But a ReplaceAttr function that
returned an empty Attr could produce an empty group even if the group
had attrs prior to replacement.

The obvious solution, doing the replacement first and then checking,
would require allocating storage to hold the replaced Attrs.  Instead,
we write to the buffer, and if no attributes were written, we back up
to before the group name.

Fixes #62512.

Change-Id: I140e0901f4b157e36594d8d476f1ab326f8f2c2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/529855
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2023-10-02 13:57:53 +00:00
Than McIntosh
3fb1d95149 internal,cmd/internal: relocate covcmd package from std to cmd
Relocate the 'covcmd' package from .../internal/coverage to
.../cmd/internal/cov, to reflect the fact that the definitions in this
package are used only in cmd, not in std.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I65bcc34736d1d0a23134a6c91c17ff138cd45431
Reviewed-on: https://go-review.googlesource.com/c/go/+/526595
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2023-09-30 16:13:15 +00:00
Than McIntosh
36e75f67ab cmd/go: fix percent covered problems with -coverpkg
This patch fixes some problems with how "go test -cover" was handling
tests involving A) multiple package tests and B) multiple packages
matched by "-coverpkg". In such scenarios the expectation is that the
percent statements covered metric for each package needs to be
relative to all statements in all packages matched by the -coverpkg
arg (this aspect of the reporting here was broken as part of
GOEXPERIMENT=coverageredesign).

The new scheme works as follows.  If -coverpkg is in effect and is
matching multiple packages, and we have multiple test targets, then:

  - each time a package is built for coverage, capture a meta-data
    file fragment corresponding to just the meta-data for that package.

  - create a new "writeCoverMeta" action, and interpose it between the
    build actions for the covered packages and the run actions. The
    "writeCoverMeta" action at runtime will emit a file
    "metafiles.txt" containing a table mapping each covered package
    (by import path) to its corresponding meta-data file fragment.

  - pass in the "metafiles.txt" file to each run action, so that
    when the test finishes running it will have an accurate picture
    of _all_ covered packages, permitting it to calculate the correct
    percentage.

Concrete example: suppose we have a top level directory with three
package subdirs, "a", "b", and "c", and from the top level, a user
runs "go test -coverpkg=./... ./...". This will result in (roughly)
the following action graph:

  build("a")       build("b")         build("c")
      |               |                   |
  link("a.test")   link("b.test")     link("c.test")
      |               |                   |
  run("a.test")    run("b.test")      run("c.test")
      |               |                   |
    print          print              print

With the new scheme, the action graph is augmented with a
writeCoverMeta action and additional dependence edges to form

  build("a")       build("b")         build("c")
      |   \       /   |               /   |
      |    v     v    |              /    |
      | writecovmeta<-|-------------+     |
      |         |||   |                   |
      |         ||\   |                   |
  link("a.test")/\ \  link("b.test")      link("c.test")
      |        /  \ +-|--------------+    |
      |       /    \  |               \   |
      |      v      v |                v  |
  run("a.test")    run("b.test")      run("c.test")
      |               |                   |
    print          print              print

A note on init functions: prior to GOEXPERIMENT=coverageredesign
the "-coverpkg=..." flag was implemented by force-importing
all packages matched by "-coverpkg" into each instrumented package.
This meant that for the example above, when executing "a.test",
the init function for package "c" would fire even if package "a"
did not ordinarily import package "c".  The new implementation
does not do this sort of forced importing, meaning that the coverage
percentages can be slightly different between 1.21 and 1.19 if
there are user-written init funcs.

Fixes #58770.
Updates #24570.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I7749ed205dce81b96ad7f74ab98bc1e90e377302
Reviewed-on: https://go-review.googlesource.com/c/go/+/495452
Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-09-30 12:33:44 +00:00
Than McIntosh
d1cb5c0605 cmd/go: improve handling of no-test packages for coverage
This patch improves the way the go command handles coverage testing
of packages that have functions but don't have any test files. Up to
this point if you ran "go test -cover" on such a package, you would
see:

  ?   	mymod/mypack	[no test files]

While "no test files" is true, it is also very unhelpful; if the
package contains functions, it would be better instead to capture the
fact that these functions are not executed when "go test -cover" is
run on the package.

With this patch, for the same no-test package "go test -cover" will
output:

	mymod/mypack	coverage: 0.0% of statements

The inclusion of such packages in coverage reporting also extends to
"-coverprofile" as well (we'll see entries for the "mypack" functions
in this case.

Note that if a package has no functions at all, then we'll still fall
back to reporting "no test files" in this case; it doesn't make sense
to report "0.0% statements covered" if there are no statements.

Updates #27261.
Updates #58770.
Updates #18909.
Fixes #24570.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I8e916425f4f2beec65861df78265e93db5ce001a
Reviewed-on: https://go-review.googlesource.com/c/go/+/495447
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2023-09-30 12:32:22 +00:00
Than McIntosh
1e69040920 cmd/link: split text sections for arm 32-bit
This CL is a roll-forward (tweaked slightly) of CL 467715, which
turned on text section splitting for GOARCH=arm. The intent is to
avoid recurrent problems with external linking where there is a
disagreement between the Go linker and the external linker over
whether a given branch will reach. In the past our approach has been
to tweak the reachability calculations slightly to try to work around
potential linker problems, but this hasn't proven to be very robust;
section splitting seems to offer a better long term fix.

Fixes #58425.

Change-Id: I7372d41abce84097906a3d0805b6b9c486f345d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/531795
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Run-TryBot: Than McIntosh <thanm@google.com>
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2023-09-29 22:29:16 +00:00
Jes Cok
fa4f951026 syscall: make origRlimitNofile atomic.Pointer[Rlimit]
Currently we are bootstrapping with Go 1.20, origRlimitNofile can
be changed to atomic.Pointer[Rlimit].

Change-Id: I00ce9d1a9030bd5dbd34e3dc6c4e38683a87be86
GitHub-Last-Rev: f2ccdb3841
GitHub-Pull-Request: golang/go#63274
Reviewed-on: https://go-review.googlesource.com/c/go/+/531516
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2023-09-29 18:51:35 +00:00
Paul E. Murphy
9bfaaa15fd cmd/internal/obj/ppc64: fix rebuilding of optab for asm tests
The end-to-end asm tests reinitialize the assembler using different
GOPPC64 values. This caused duplicate entries to amass from the
prefix and generated optab entries. This bug only affects the
asm end-to-end tests.

On reinitialization, optab contains the previous prefixedOptab
and optabGen entries, not just the initial values. Rework the
initialization to avoid the stale optab entries.

Change-Id: I310499915a5272ed0174ed8135d60788e6b4b716
Reviewed-on: https://go-review.googlesource.com/c/go/+/528316
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2023-09-29 14:58:44 +00:00
Alexander Yastrebov
20944cf066 internal/zstd: reset reader buffer
Reset r.buffer on Reset to avoid subsequent Read calls
observing previously decoded data.

For #62513

Change-Id: Icb65e76b5c5c0af32b36ec3a5999dca86407cbc8
GitHub-Last-Rev: 99c0a6fa72
GitHub-Pull-Request: golang/go#63288
Reviewed-on: https://go-review.googlesource.com/c/go/+/531735
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2023-09-29 13:03:17 +00:00
Daniel Martí
8c3924c656 path/filepath: reuse os.ReadDir
While reading the source code, I noticed that readDir
seemed extremely similar to os.ReadDir. They indeed appear to be copies.

Note that there's readDirNames as well, but it has no corresponding
os.ReadDirNames top-level helper to be replaced by.

Change-Id: I6fe1d0aeda35dc69bb4531986fe3a21ebda1d877
Reviewed-on: https://go-review.googlesource.com/c/go/+/530795
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2023-09-29 09:00:12 +00:00
qmuntal
5351bcf822 syscall: simplify and optimize environment block creation on Windows
createEnvBlock currently allocates multiple times: at least one to
convert the slice of strings into a NULL separated slice of bytes, and
then again to encode it as UTF-16. The logic to do so is also quite
complex.

This CL simplifies the logic by allocating only once by encoding the
slice of strings into UTF-16 directly using utf16.AppendRune.

goos: windows
goarch: amd64
pkg: syscall
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
                  │   old.txt    │               new.txt               │
                  │    sec/op    │   sec/op     vs base                │
CreateEnvBlock-12   37.92µ ± 24%   21.36µ ± 8%  -43.66% (p=0.000 n=10)

                  │    old.txt    │               new.txt                │
                  │     B/op      │     B/op      vs base                │
CreateEnvBlock-12   109.12Ki ± 0%   26.62Ki ± 0%  -75.60% (p=0.000 n=10)

                  │  old.txt   │              new.txt               │
                  │ allocs/op  │ allocs/op   vs base                │
CreateEnvBlock-12   4.000 ± 0%   1.000 ± 0%  -75.00% (p=0.000 n=10)

Change-Id: If35f62c3926b486d5253a9ae23a33b979b2f02c2
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2023-09-28 18:29:48 +00:00
Alexander Yastrebov
6e866fea2b internal/zstd: handle match extending past window
For #62513

Change-Id: I59c24b254d5073140811b41497eabb91fb0046e9
GitHub-Last-Rev: 4dd16fcfa8
GitHub-Pull-Request: golang/go#63248
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2023-09-28 17:57:43 +00:00
Tobias Klauser
6a4a5966c3 cmp: gofmt
Change-Id: Icdd373c9bae20ce08a21eb54b424067bd17f1f79
Reviewed-on: https://go-review.googlesource.com/c/go/+/531236
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2023-09-28 17:57:40 +00:00
Alexander Yastrebov
a57658171f internal/zstd: allow zero dictionary id
A value of 0 has same meaning as no Dictionary_ID,
in which case the frame may or may not need a dictionary to be decoded,
and the ID of such a dictionary is not specified.

See https://github.com/facebook/zstd/issues/2172

For #62513

Change-Id: If0eafcbc5d2188576f0cb687234e30c9eb4037a6
GitHub-Last-Rev: 9cf12dcf19
GitHub-Pull-Request: golang/go#63268
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2023-09-28 17:56:15 +00:00
Cherry Mui
9d3cc85e51 cmd/link: unskip TestBuildForTvOS on dwarin/arm64
TestBuildForTvOS currently runs only on darwin/amd64. It can also
run on darwin/arm64, if the SDK is installed. Unskip the test.

Also add logging for the build commands it runs.

For #63203.

Change-Id: Id41d2e1879f5d39d239f0586d836d33accf5efbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/531555
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2023-09-28 15:31:13 +00:00
Mateusz Poliwczak
0ba8ef4702 net: set IsNotFound for unknown services in LookupPort
Change-Id: I9d5f0ea5edd2c121179e3d2f8d4a890fa25a3fa9
GitHub-Last-Rev: 48a13fe5f5
GitHub-Pull-Request: golang/go#63160
Reviewed-on: https://go-review.googlesource.com/c/go/+/530415
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2023-09-28 13:41:21 +00:00
Tobias Klauser
1176052bb4 internal/syscall/unix: implement Eaccess on freebsd
Like on linux, use faccessat(AT_FDCWD, path, mode, AT_EACCESS)

Change-Id: I98c8af5008bfa7940abffa6fcb3766254955cb08
Reviewed-on: https://go-review.googlesource.com/c/go/+/531155
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2023-09-28 03:38:07 +00:00
Alexander Yastrebov
d785af1adb internal/zstd: allow stream consisting of skippable frames
For #62513

Change-Id: I2557aed5ae106ea4684bb599cce740e9da9df780
GitHub-Last-Rev: 2b7ddc6c09
GitHub-Pull-Request: golang/go#63251
Reviewed-on: https://go-review.googlesource.com/c/go/+/531295
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2023-09-28 03:15:09 +00:00
Bryan C. Mills
6cf6067d4e net/http: add extra synchronization for a Logf call in TestTransportAndServerSharedBodyRace
This race was reported in
https://build.golang.org/log/6f043170946b665edb85b50804a62db68348c52f.

As best as I can tell, it is another instance of #38370. The deferred
call to backend.close() ought to be enough to ensure that the t.Logf
happens before the end of the test, but in practice it is not, and
with enough scheduling delay we can manage to trip the race detector
on a call to Logf after the test function has returned.

Updates #38370.

Change-Id: I5ee45df45c6bfad3239d665df65a138f1c4573a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/531195
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2023-09-27 15:58:11 +00:00
Alexander Yastrebov
4a310877f2 internal/zstd: configure window size for single segment frames
Set window size to frame content size when single segment flag is set.

For #62513

Change-Id: I2a60c33123aca4f6a631e6d625f4582ff31a63cb
GitHub-Last-Rev: 9bafe01e45
GitHub-Pull-Request: golang/go#63224
Reviewed-on: https://go-review.googlesource.com/c/go/+/531075
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2023-09-27 14:35:13 +00:00
qmuntal
48042aa09c syscall: remove Windows 7 console handle workaround
Windows 7 is no longer supported, there is no need to complicate the
code to support inheriting console handles.

Change-Id: Ie9f5cde77a63ea4fa6032bbb7ba5bd48a0989c5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/531235
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2023-09-27 14:22:02 +00:00
Adam Cmiel
a2ff3acb0d cmd/go: make malformed go.sum a fatal error
In CL 197062, many errors related to go.sum were changed from base.Fatal
to error returns. The malformed go.sum error was lost in the process.
Currently, when go encounters a malformed go.sum file, go will read the
well-formed part of the file and then silently ignore the rest.

The motivation behind moving away from base.Fatal was to make the errors
show up in -json output. Simply propagating the malformed go.sum error
would not achieve this:

- For an argument-less 'go mod download -json' with a go>=1.17 module,
  a malformed go.sum causes an error during LoadModGraph already, before
  go ever starts downloading modules and printing their JSON.
- In other cases, a malformed go.sum would be reported as Error for one
  of the modules (presumably the one which gets downloaded first) but
  none of the others.
- In either case, 'go mod download' manages to download enough data to
  succeed on a re-run, making the error look intermittent.

Switch the error back to a Fatal one, but give 'go mod tidy' an
exception to let it fix broken go.sum files.

Fixes #62345

Change-Id: I066482b242165bcc6cbba0b2dab64901fad8619f
GitHub-Last-Rev: feae7696d6
GitHub-Pull-Request: golang/go#62588
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2023-09-27 14:20:58 +00:00
Jes Cok
33d3625bf8 cmd/go/internal/vcs: don’t new errors ahead of time in gitRemoteRepo
Also make 'cmd' a const for it is in fact immutable.

Change-Id: I3373daa1775e863a378355a355325a7fbdf90485
GitHub-Last-Rev: f6698174f5
GitHub-Pull-Request: golang/go#63155
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2023-09-27 14:19:58 +00:00
Jes Cok
66959a5934 go/build/constraint: delete, replace stringsCut calls with strings.Cut
Currently, the Go bootstrap toolchain is bumped to 1.20.

Change-Id: I6467768c0640a8e9aadbfea79cfdfb14b4b80679
GitHub-Last-Rev: 7cf2d54a48
GitHub-Pull-Request: golang/go#63174
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2023-09-27 14:19:00 +00:00