Commit Graph

740 Commits

Author SHA1 Message Date
Ian Lance Taylor 7c6b047ea1 encoding/base64: use internal/byteorder
This permits us to remove the dependency on reflect.

Change-Id: I60b1e9fd713f340bfd5eec2edfa58fc724a8e2d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/641936
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Bypass: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2025-02-06 16:40:55 -08:00
Sean Liao 439d39a719 all: replace reflect.Value.Type.Kind with reflect.Value.Kind
Fixes #46107

Change-Id: I170f3cacda652752cd740e04b565a616a0e43fd1
Reviewed-on: https://go-review.googlesource.com/c/go/+/632635
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2025-02-03 10:30:40 -08:00
Ian Lance Taylor 77f5ecef3a all: run gofmt
Change-Id: I0af1903ed1e4f2bf4ea273847b024520c577ef6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/642496
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2025-02-03 09:55:31 -08:00
Joe Tsai 368a9ec998 encoding/json: cleanup tests
Perform minor cleanups in tests to improve printout of diffs
and/or follow modern coding style.

This reduces the amount of diffs between v1 and the v2 prototype.

Change-Id: I019bb9642e2135f2fa3eac6abfa6df91c397aa82
Reviewed-on: https://go-review.googlesource.com/c/go/+/642257
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2025-01-14 14:54:07 -08:00
Joe Tsai 47a56b2b6d encoding/json: add cases to TestUnmarshal for fatal syntactic errors
The presence of a syntax error in the input immediately unmarshaling
before unmarshaling into the underlying value.
Otherwise, semantic errors are generally lazily reported and
allow unmarshaling to continue on.

Change-Id: Icf1cfc684e415312d9c8bf739c396ede15299d7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/642295
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2025-01-13 08:27:22 -08:00
Joe Tsai 7bb192a1c5 encoding/json: always check resulting Go value for unmarshaling
Even if an error occurs during unmarshal, check the resulting Go value.
The documented API specifies no guarantees on how much of a Go value
will be populated when an error occurs and the "json" package
is technically not bounded by the Go compatibility agreement
to ensure this behavior never changes.

However, there is still value in running checks for
what exactly what is partially mutated in the event of an error
even if this is not guaranteed behavior.

Change-Id: I6e923a31f77768a14c4adfb0d37dbeee5807a4a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/642275
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2025-01-13 08:27:19 -08:00
Joe Tsai 4225c6cb37 encoding/json: improve fidelity of TestUnmarshal for Numbers
In particular, cover the behavior of unmarshaling a JSON string
into a Number type regardless of whether the `string` option
is specified or not.

Change-Id: Ibc55f16860442240bcfeea1fd51aaa76f7e50f67
Reviewed-on: https://go-review.googlesource.com/c/go/+/641416
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Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
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2025-01-08 14:37:21 -08:00
willboland 3c4102bfd4 encoding/binary: add documentation for endian methods
While the comments are on an unexported type, gopls correctly
shows them when using the exported vars LittleEndian and BigEndian.

Fixes #68083

Change-Id: I53668c3140ad00f7b58437be74e6df773e2916f1
GitHub-Last-Rev: cef717123c
GitHub-Pull-Request: golang/go#71058
Reviewed-on: https://go-review.googlesource.com/c/go/+/638936
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
2024-12-30 12:32:26 -08:00
Joe Tsai 15f232456a encoding/json: remove suggestion on Unmarshaler with JSON null
It is not true that Unmarshal always treats a JSON null
as being equivalent to a no-op.
For bools, ints, uints, floats, strings, arrays, and structs,
it treats a JSON null as a no-op. However, for []byte, slice,
map, pointer, or interface, it zeros the underlying value.

Remove this suggestion as the actual behavior is inconsistent.

Note that the proposed behavior in v2 Unmarshal is to consistently
zero out the underlying value.

Change-Id: I02cef0bf7919f25cfd0aceb04486d37498761181
Reviewed-on: https://go-review.googlesource.com/c/go/+/638416
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-12-30 12:21:48 -08:00
Joe Tsai 2b794ed86c encoding/json: expand and modernize TestInterfaceSet
Add more test cases to cover a wider range of edge cases.
Use a generic addr function to take the address of a value.
Even though redudant, explicitly include a cast to the
top-level Go type so that it is more readable what the
expected input and ouput types are.

Change-Id: I3ef68df6f1beb903ae237cd49f3dcb91e5270fe7
Reviewed-on: https://go-review.googlesource.com/c/go/+/638256
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-12-27 17:23:24 -08:00
Dmytro Yeroshkin 35caf4130e encoding/base64, encoding/base32: add doc details to DecodeString and AppendDecode
Currently only Encoding.Decode has the information that `\r` and
`\n` are ignored. However, this also applies to the other decoding
methods. Since this is not intuitive behavior, we should add this
information to the other impacted methods.

Change-Id: I6f71fe1f4280fe75f2694a3cc1b759652eb8b8c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/634215
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Chris Ingram <chrisingram@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Truc Le <trucleduc@google.com>
2024-12-06 20:49:45 +00:00
cuishuang a925402b62 all: fix some function names and typos in comment
Change-Id: I07e7c8eaa5bd4bac0d576b2f2f4cd3f81b0b77a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/630055
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2024-11-21 22:16:20 +00:00
Joe Tsai 99dad52816 encoding/json: check exact structure of local error types in tests
During the development of error wrapping (#29934),
the tests were modified to stop using reflect.DeepEqual
since the prototype for error wrapping at the time included
frame information of where the error was created.

However, that change diminished the fidelity of the test
so that it is no longer as strict, which affects the endeavor
to implement v1 in terms of the v2 prototype.

For locally declared error types, use reflect.DeepEqual
to check that the exact structure of the error value matches.

Change-Id: I443d418533866ab8d533bca3785fdc741e2c140e
Reviewed-on: https://go-review.googlesource.com/c/go/+/629517
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Damien Neil <dneil@google.com>
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2024-11-19 18:48:19 +00:00
Emmanuel T Odeke 64e7f66b26 encoding/json, text/template: use reflect.Value.Equal instead of ==
This change applies a fix for a reflect.Value incorrect comparison
using "==" or reflect.DeepEqual.
This change is a precursor to the change that'll bring in the
static analyzer "reflectvaluecompare", by ensuring that all tests
pass beforehand.

Updates #43993

Change-Id: I6c47eb0a1de6353ac7495cb8cb49b318b7ebba56
Reviewed-on: https://go-review.googlesource.com/c/go/+/626116
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: David Chase <drchase@google.com>
2024-11-08 16:09:21 +00:00
Michael Anthony Knyszek 579eb79f62 all: skip and fix various tests with -asan and -msan
First, skip all the allocation count tests.

In some cases this aligns with existing skips for -race, but in others
we've got new issues. These are debug modes, so some performance loss is
expected, and this is clearly no worse than today where the tests fail.

Next, skip internal linking and static linking tests for msan and asan.

With asan we get an explicit failure that neither are supported by the C
and/or Go compilers. With msan, we only get the Go compiler telling us
internal linking is unavailable. With static linking, we segfault
instead. Filed #70080 to track that.

Next, skip some malloc tests with asan that don't quite work because of
the redzone.

This is because of some sizeclass assumptions that get broken with the
redzone and the fact that the tiny allocator is effectively disabled
(again, due to the redzone).

Next, skip some runtime/pprof tests with asan, because of extra
allocations.

Next, skip some malloc tests with asan that also fail because of extra
allocations.

Next, fix up memstats accounting for arenas when asan is enabled. There
is a bug where more is added to the stats than subtracted. This also
simplifies the accounting a little.

Next, skip race tests with msan or asan enabled; they're mutually
incompatible.

Fixes #70054.
Fixes #64256.
Fixes #64257.
For #70079.
For #70080.

Change-Id: I99c02a0b9d621e44f1f918b307aa4a4944c3ec60
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-asan-clang15,gotip-linux-amd64-msan-clang15
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2024-10-28 21:04:51 +00:00
Jes Cok 9f26d35fac encoding/json: clarify omitempty option for {array,slice,map,string}
This CL is inspired by:
https://github.com/golang/go/issues/29310#issuecomment-758768325

When I read omitempty option in encoding/xml package, I find it's
a bit different than encoding/json package.

I think it's more precise to say:
"any array, slice, map, or string of length zero."

Update #29310

Change-Id: Ia77167c3155411640224b349d4b34d0bb91ee11e
GitHub-Last-Rev: a4cf00dcc7
GitHub-Pull-Request: golang/go#69984
Reviewed-on: https://go-review.googlesource.com/c/go/+/621835
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-10-23 15:18:51 +00:00
Sean Liao e3d372aea8 encoding/xml: document that embedded interfaces look like non-embedded ones
Fixes #69941

Change-Id: Icc3c88d57c14fa9ca203c693d67f144686fed8cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/621076
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2024-10-21 15:18:09 +00:00
Tobias Klauser dd281fd616 encoding/asn1: use slices.Equal in ObjectIdentifier.Equal
Change-Id: I5efe3b9dcee85dfa34b6072c6f85108b6fc7cf99
Reviewed-on: https://go-review.googlesource.com/c/go/+/618515
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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2024-10-08 15:08:01 +00:00
Jes Cok e86982c515 encoding/json: add omitzero option
Fixes #45669

Change-Id: Ic13523c0b3acdfc5b3e29a717bc62fde302ed8fd
GitHub-Last-Rev: 57030f26b0
GitHub-Pull-Request: golang/go#69622
Reviewed-on: https://go-review.googlesource.com/c/go/+/615676
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2024-10-02 14:22:27 +00:00
Jes Cok c9ad32bd9f encoding/asn1: unmarshal bool values correctly dealing with the ANY type
Fixes #68241

Change-Id: I1ee81aa50c2f39f535ad27309e855f19acb2f2ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/595796
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
2024-09-23 18:05:24 +00:00
Jes Cok 76e44f42c8 encoding/gob: make use of maps.Clone
Change-Id: I6a23219a9e05350bdd9205e19165d5944f15de31
GitHub-Last-Rev: 8c295bf55f
GitHub-Pull-Request: golang/go#69429
Reviewed-on: https://go-review.googlesource.com/c/go/+/612719
Reviewed-by: Keith Randall <khr@google.com>
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2024-09-13 21:04:06 +00:00
Roland Shoemaker 08c84420bc encoding/gob: cover missed cases when checking ignore depth
This change makes sure that we are properly checking the ignored field
recursion depth in decIgnoreOpFor consistently. This prevents stack
exhaustion when attempting to decode a message that contains an
extremely deeply nested struct which is ignored.

Thanks to Md Sakib Anwar of The Ohio State University (anwar.40@osu.edu)
for reporting this issue.

Fixes #69139
Fixes CVE-2024-34156

Change-Id: Iacce06be95a5892b3064f1c40fcba2e2567862d6
Reviewed-on: https://go-internal-review.googlesource.com/c/go/+/1440
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/611239
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2024-09-05 16:42:09 +00:00
Demi Marie Obenour 794b0a0748 encoding/xml: allow ]]> in attribute values
This is permitted by the XML specification.

Fixes #68387

Change-Id: Ic4ab5520a08a5a997f1c3d13c6d5f80c0521e45c
GitHub-Last-Rev: 6d2ac307bb
GitHub-Pull-Request: golang/go#69197
Reviewed-on: https://go-review.googlesource.com/c/go/+/610056
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-09-04 13:33:11 +00:00
j2gg0s 0fe6347732 encoding/json: add embedded structs to the UnmarshalTypeError's Field
Including embedded struct inforamtion in error message.

Fixes #68941

Change-Id: I6a6f7d506104839a9a7cf1a2c3003272f5534a79
GitHub-Last-Rev: 717f680aca
GitHub-Pull-Request: golang/go#68966
Reviewed-on: https://go-review.googlesource.com/c/go/+/606956
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2024-09-03 15:49:47 +00:00
Ian Lance Taylor 7b0fdd1323 encoding/base32, encoding/base64: document Decode to short buffer
Document that if one of the Decode methods in these packages is given
a short buffer, it panics.

Fixes #69024

Change-Id: I1c0e4c74274965c1cfa0422cc8f86af4fefb1d00
Reviewed-on: https://go-review.googlesource.com/c/go/+/607499
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-08-30 19:38:50 +00:00
j2gg0s bd8977be0c encoding/json: merge FieldStack if the error's Field exists.
When people return UnmarshalTypeError in UnmarshalJSON, we should append error's Field to FieldStack.

Fixes #68750

Change-Id: I0a5a9b259a1b569de1bebc815ec936c913e10469
GitHub-Last-Rev: 18796addc3
GitHub-Pull-Request: golang/go#68870
Reviewed-on: https://go-review.googlesource.com/c/go/+/605455
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-08-15 20:28:20 +00:00
Mateusz Poliwczak d0a468e52c encoding: add TextAppender and BinaryAppender
For #62384

Change-Id: I54707a29653df72ad9cd5633f434b87e0f630b94
GitHub-Last-Rev: 4f78947ac5
GitHub-Pull-Request: golang/go#68620
Reviewed-on: https://go-review.googlesource.com/c/go/+/601595
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-07-30 14:22:50 +00:00
Chen Su d69a0883d4 encoding/gob: fix package doc typo for wireType
Change-Id: Ib93f2b565e5271dfa3c3ca5d040ef24269c47cf8
GitHub-Last-Rev: 3f1da518a4
GitHub-Pull-Request: golang/go#68584
Reviewed-on: https://go-review.googlesource.com/c/go/+/601036
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2024-07-25 21:15:30 +00:00
apocelipes b5b9d24dc3 encoding: use slices and maps to clean up tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Change-Id: I62ad60a66e28cfb2bb49c36037bafd4b9d201e88
GitHub-Last-Rev: 79554baddb
GitHub-Pull-Request: golang/go#67611
Reviewed-on: https://go-review.googlesource.com/c/go/+/587818
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2024-07-25 00:23:58 +00:00
Ian Lance Taylor 8659ad972f encoding/json: rewrite interface{} to any
For #49884

Change-Id: I1623201c47c820a152773d2f43d0072a1466d3bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/588118
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-07-24 00:40:06 +00:00
Martin Garton d567ea652a encoding/binary: add missing test helper calls
Various functions in binary_test.go were missing some t.Helper() calls,
so this adds them in.

Change-Id: I0e5894e3c3cf72627203694a32adca51fe1563f5
GitHub-Last-Rev: b28c9255b3
GitHub-Pull-Request: golang/go#63897
Reviewed-on: https://go-review.googlesource.com/c/go/+/539135
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Reviewed-by: qiu laidongfeng2 <2645477756@qq.com>
Auto-Submit: Keith Randall <khr@golang.org>
2024-07-23 19:17:29 +00:00
Kir Kolyshkin 0dae393a26 encoding/binary: use list format in docstrings
This looks way better than the code formatting.

Similar to CL 597656.

Change-Id: If404c952ece384aea096f2394bd475a601627a79
Reviewed-on: https://go-review.googlesource.com/c/go/+/597657
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-07-16 18:17:30 +00:00
Sean Liao 3bfbfa821f encoding/json: document compact json output in Encoder.Encode
Using the same wording as Compact.

Fixes #67943

Change-Id: I578874f3e917bba1634dd988895e622a5ac78c74
Reviewed-on: https://go-review.googlesource.com/c/go/+/597976
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-07-16 18:06:21 +00:00
Jes Cok 72e2220b50 encoding/json: clarify the map's key type for Unmarshal
While here, also fix doc link for encoding.TextMarshaler.

Fixes #67495

Change-Id: Ia2a674c5c35b5a849ce8f5eef3d34d165b3195b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/593335
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-06-21 18:42:18 +00:00
Alan Donovan bf91eb3a8b std: fix calls to Printf(s) with non-constant s
In all cases the intent was not to interpret s as a format string.
In one case (go/types), this was a latent bug in production.
(These were uncovered by a new check in vet's printf analyzer.)

Updates #60529

Change-Id: I3e17af7e589be9aec1580783a1b1011c52ec494b
Reviewed-on: https://go-review.googlesource.com/c/go/+/587855
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2024-05-23 18:42:28 +00:00
Ian Lance Taylor b0b1d42db3 all: change from sort functions to slices functions where feasible
Doing this because the slices functions are slightly faster and
slightly easier to use. It also removes one dependency layer.

This CL does not change packages that are used during bootstrap,
as the bootstrap compiler does not have the required slices functions.
It does not change the go/scanner package because the ErrorList
Len, Swap, and Less methods are part of the Go 1 API.

Change-Id: If52899be791c829198e11d2408727720b91ebe8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/587655
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
2024-05-23 01:00:11 +00:00
Russ Cox bde905af5b all: document legacy //go:linkname for modules with ≥20,000 dependents
For #67401.

Change-Id: Icc10ede72547d8020c0ba45e89d954822a4b2455
Reviewed-on: https://go-review.googlesource.com/c/go/+/587218
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-23 00:18:55 +00:00
Jes Cok 6f08665079 encoding/binary: adjust docs for Append, Encode and Decode
Updates #60023

Change-Id: Ida1cc6c4f5537402e11db6b8c411828f2bcc0a5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/587096
Reviewed-by: Austin Clements <austin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-05-22 17:29:31 +00:00
Lorenz Bauer 447ad32a1d encoding/binary: speed up Size
Size() is currently not called from the fast path, since the package
handles the buffer sizing for Read and Write internally. This will change
when adding Append() because callers can use Size to avoid allocations when
writing into bytes.Buffer via AvailableBuffer for example.

Add a fast path for simple types and extend the existing struct size cache
to arrays of structs.

Change-Id: I3af16a2b6c9e2dbe6166a2f8c96bcd2e936719e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/584358
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Austin Clements <austin@google.com>
2024-05-20 19:16:18 +00:00
Lorenz Bauer 04bf36e973 encoding/binary: add Append, Encode and Decode
Add a function which appends the binary representation of a value to the end of a slice.
This allows users to encode values with zero allocations. Also add Encode and Decode
functions which mimic unicode/utf8.

goos: darwin
goarch: arm64
pkg: encoding/binary
cpu: Apple M1 Pro
                            │   base.txt    │             append.txt              │
                            │    sec/op     │    sec/op     vs base               │
ReadSlice1000Int32s-10         2.690µ ±  0%    2.532µ ± 3%   -5.86% (p=0.002 n=6)
ReadStruct-10                  205.8n ±  0%    201.4n ± 1%   -2.14% (p=0.002 n=6)
WriteStruct-10                 159.1n ±  0%    153.5n ± 0%   -3.55% (p=0.002 n=6)
WriteSlice1000Structs-10       129.8µ ±  0%    124.2µ ± 0%   -4.34% (p=0.002 n=6)
ReadSlice1000Structs-10        161.7µ ±  0%    160.3µ ± 0%   -0.89% (p=0.002 n=6)
ReadInts-10                    156.8n ±  0%    161.6n ± 0%   +3.09% (p=0.002 n=6)
WriteInts-10                   134.5n ±  0%    139.5n ± 2%   +3.72% (p=0.002 n=6)
WriteSlice1000Int32s-10        2.691µ ± 16%    2.551µ ± 4%   -5.20% (p=0.002 n=6)
PutUint16-10                  0.6448n ±  4%   0.6212n ± 1%        ~ (p=0.093 n=6)
AppendUint16-10                1.414n ±  0%    1.424n ± 1%        ~ (p=0.115 n=6)
PutUint32-10                  0.6210n ±  0%   0.6211n ± 0%        ~ (p=0.833 n=6)
AppendUint32-10                1.414n ±  0%    1.426n ± 1%   +0.85% (p=0.017 n=6)
PutUint64-10                  0.6210n ±  0%   0.6394n ± 1%   +2.95% (p=0.002 n=6)
AppendUint64-10                1.414n ±  0%    1.427n ± 2%        ~ (p=0.052 n=6)
LittleEndianPutUint16-10      0.6239n ±  0%   0.6271n ± 1%        ~ (p=0.063 n=6)
LittleEndianAppendUint16-10    1.421n ±  0%    1.432n ± 1%   +0.81% (p=0.002 n=6)
LittleEndianPutUint32-10      0.6240n ±  0%   0.6240n ± 0%        ~ (p=0.766 n=6)
LittleEndianAppendUint32-10    1.422n ±  1%    1.425n ± 0%        ~ (p=0.673 n=6)
LittleEndianPutUint64-10      0.6242n ±  0%   0.6238n ± 0%   -0.08% (p=0.030 n=6)
LittleEndianAppendUint64-10    1.420n ±  0%    1.449n ± 1%   +2.04% (p=0.002 n=6)
ReadFloats-10                  39.36n ±  0%    42.54n ± 1%   +8.08% (p=0.002 n=6)
WriteFloats-10                 33.65n ±  0%    35.27n ± 1%   +4.80% (p=0.002 n=6)
ReadSlice1000Float32s-10       2.656µ ±  0%    2.526µ ± 1%   -4.91% (p=0.002 n=6)
WriteSlice1000Float32s-10      2.765µ ±  0%    2.857µ ± 3%   +3.31% (p=0.002 n=6)
ReadSlice1000Uint8s-10         129.1n ±  1%    130.4n ± 1%        ~ (p=0.126 n=6)
WriteSlice1000Uint8s-10       144.90n ±  3%    18.67n ± 2%  -87.12% (p=0.002 n=6)
PutUvarint32-10                12.11n ±  0%    12.12n ± 0%        ~ (p=0.675 n=6)
PutUvarint64-10                30.82n ±  0%    30.79n ± 1%        ~ (p=0.658 n=6)
AppendStruct-10                                107.8n ± 0%
AppendSlice1000Structs-10                      119.0µ ± 0%
AppendInts-10                                  55.29n ± 0%
AppendSlice1000Int32s-10                       2.211µ ± 1%
geomean                        33.07n          48.18n        -7.03%

Fixes #60023

Change-Id: Ife3f217b11d5f3eaa5a53fe8a7e877552f751f94
Reviewed-on: https://go-review.googlesource.com/c/go/+/579157
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Ingo Oeser <nightlyone@googlemail.com>
Reviewed-by: Austin Clements <austin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-20 18:58:26 +00:00
Mateusz Poliwczak 722d59436b crypto/x509: add text and binary marshal methods to OID
Fixes #66249

Change-Id: I5973a19a087a35ad951e8a220d3e6e4456c7577f
GitHub-Last-Rev: 921ca8bd0c
GitHub-Pull-Request: golang/go#66599
Reviewed-on: https://go-review.googlesource.com/c/go/+/575295
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
2024-05-16 02:00:26 +00:00
Niklas Ott c7c578cdf3 encoding/base32: use correct length for unpadded buffer in Read
If unpadded content was passed, in some occassions content was omitted,
because the division result was floored. Ceiling it makes sure all
content is always read.

Fixes #65166

Change-Id: I1d8ee7ef436080483ed8f0e615b70a1013455f92
Reviewed-on: https://go-review.googlesource.com/c/go/+/581415
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-14 16:25:54 +00:00
nobishino 133cdfb469 encoding/csv: clarify that Writer uses different line break than RFC 4180 by default
Package documentation of encoding/csv says:

> this package supports the format described in RFC 4180.

According to section 2 of RFC 4180:

> Each record is located on a separate line, delimited by a line break (CRLF).

On the other hand, Writer uses LF (not CRLF) as newline character by default.

> If [Writer.UseCRLF] is true, the Writer ends each output line with \r\n instead of \n.

Strictly speaking, this behavior is different from RFC 4180.
Package documentation would improve if we clarify that point.

Change-Id: I120e9332b593e1ac9ed8e49f6f8419ea88efc57d
GitHub-Last-Rev: 489167eb04
GitHub-Pull-Request: golang/go#67290
Reviewed-on: https://go-review.googlesource.com/c/go/+/584835
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-05-13 21:32:28 +00:00
Lorenz Bauer ec1724bc99 encoding/binary: simplify encoder.value
Remove some duplicate type switching from encoder.value. reflect.Uint and
reflect.Int don't have a case statement anymore, but since they aren't valid
types there is no change in semantics.

goos: darwin
goarch: arm64
pkg: encoding/binary
cpu: Apple M1 Pro
                            │   base.txt   │            simplify.txt             │
                            │    sec/op    │    sec/op     vs base               │
ReadSlice1000Int32s-10         2.649µ ± 1%    2.645µ ± 0%        ~ (p=0.069 n=6)
ReadStruct-10                  204.8n ± 2%    199.9n ± 0%   -2.39% (p=0.002 n=6)
WriteStruct-10                 185.6n ± 2%    154.0n ± 0%  -17.03% (p=0.002 n=6)
WriteSlice1000Structs-10       157.9µ ± 1%    125.0µ ± 0%  -20.86% (p=0.002 n=6)
ReadSlice1000Structs-10        162.6µ ± 2%    159.3µ ± 0%        ~ (p=0.065 n=6)
ReadInts-10                    159.7n ± 1%    156.7n ± 0%   -1.88% (p=0.002 n=6)
WriteInts-10                   134.2n ± 0%    134.1n ± 0%   -0.11% (p=0.011 n=6)
WriteSlice1000Int32s-10        2.680µ ± 0%    2.680µ ± 0%        ~ (p=0.955 n=6)
PutUint16-10                  0.6253n ± 2%   0.6211n ± 0%   -0.67% (p=0.013 n=6)
AppendUint16-10                1.417n ± 2%    1.413n ± 0%        ~ (p=0.065 n=6)
PutUint32-10                  0.6210n ± 0%   0.6210n ± 0%        ~ (p=0.835 n=6)
AppendUint32-10                1.414n ± 0%    1.414n ± 0%        ~ (p=1.000 n=6)
PutUint64-10                  0.6210n ± 0%   0.6212n ± 0%        ~ (p=0.260 n=6)
AppendUint64-10                1.414n ± 1%    1.417n ± 0%        ~ (p=0.097 n=6)
LittleEndianPutUint16-10      0.6236n ± 0%   0.6238n ± 0%        ~ (p=0.426 n=6)
LittleEndianAppendUint16-10    1.419n ± 0%    1.421n ± 1%        ~ (p=0.054 n=6)
LittleEndianPutUint32-10      0.6236n ± 0%   0.6239n ± 0%        ~ (p=0.457 n=6)
LittleEndianAppendUint32-10    1.421n ± 3%    1.421n ± 0%        ~ (p=1.000 n=6)
LittleEndianPutUint64-10      0.6242n ± 1%   0.6239n ± 0%        ~ (p=0.372 n=6)
LittleEndianAppendUint64-10    1.421n ± 0%    1.421n ± 0%        ~ (p=1.000 n=6)
ReadFloats-10                  39.39n ± 0%    39.35n ± 0%   -0.10% (p=0.026 n=6)
WriteFloats-10                 33.64n ± 0%    33.65n ± 0%        ~ (p=0.297 n=6)
ReadSlice1000Float32s-10       2.661µ ± 0%    2.664µ ± 0%        ~ (p=0.916 n=6)
WriteSlice1000Float32s-10      2.763µ ± 0%    2.758µ ± 2%        ~ (p=0.225 n=6)
ReadSlice1000Uint8s-10         129.5n ± 2%    129.5n ± 2%        ~ (p=0.485 n=6)
WriteSlice1000Uint8s-10        144.4n ± 4%    146.1n ± 2%        ~ (p=0.065 n=6)
PutUvarint32-10                12.12n ± 0%    12.12n ± 2%        ~ (p=0.933 n=6)
PutUvarint64-10                30.75n ± 0%    31.29n ± 1%   +1.76% (p=0.002 n=6)
geomean                        33.44n         32.89n        -1.65%

Change-Id: Ibce978012c268a7f26fe7567c340c861fa4b115d
Reviewed-on: https://go-review.googlesource.com/c/go/+/579156
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-13 21:22:39 +00:00
Mateusz Poliwczak a878d3dfa0 encoding/hex: don't overallocate memory in DecodeString
Now as []byte(string) doesn't always cause heap allocation (CL 520599, #2205)
we can make DecodeString simpler and more performant, by not allocating
x2 the required memory.

goos: linux
goarch: amd64
pkg: encoding/hex
cpu: AMD Ryzen 5 4600G with Radeon Graphics
                      │  beforehex   │              afterhex               │
                      │    sec/op    │   sec/op     vs base                │
DecodeString/256-12      197.9n ± 1%   172.2n ± 1%  -13.01% (p=0.000 n=10)
DecodeString/1024-12     684.9n ± 1%   598.5n ± 1%  -12.61% (p=0.000 n=10)
DecodeString/4096-12     2.764µ ± 0%   2.343µ ± 1%  -15.23% (p=0.000 n=10)
DecodeString/16384-12   10.774µ ± 1%   9.348µ ± 1%  -13.23% (p=0.000 n=10)
geomean                  1.417µ        1.226µ       -13.53%

                      │  beforehex   │               afterhex               │
                      │     B/s      │     B/s       vs base                │
DecodeString/256-12     1.205Gi ± 1%   1.385Gi ± 1%  +14.94% (p=0.000 n=10)
DecodeString/1024-12    1.393Gi ± 1%   1.593Gi ± 1%  +14.42% (p=0.000 n=10)
DecodeString/4096-12    1.380Gi ± 0%   1.628Gi ± 1%  +17.97% (p=0.000 n=10)
DecodeString/16384-12   1.416Gi ± 1%   1.632Gi ± 1%  +15.25% (p=0.000 n=10)
geomean                 1.346Gi        1.556Gi       +15.64%

                      │   beforehex   │               afterhex               │
                      │     B/op      │     B/op      vs base                │
DecodeString/256-12        256.0 ± 0%     128.0 ± 0%  -50.00% (p=0.000 n=10)
DecodeString/1024-12      1024.0 ± 0%     512.0 ± 0%  -50.00% (p=0.000 n=10)
DecodeString/4096-12     4.000Ki ± 0%   2.000Ki ± 0%  -50.00% (p=0.000 n=10)
DecodeString/16384-12   16.000Ki ± 0%   8.000Ki ± 0%  -50.00% (p=0.000 n=10)
geomean                  2.000Ki        1.000Ki       -50.00%

                      │ beforehex  │              afterhex               │
                      │ allocs/op  │ allocs/op   vs base                 │
DecodeString/256-12     1.000 ± 0%   1.000 ± 0%       ~ (p=1.000 n=10) ¹
DecodeString/1024-12    1.000 ± 0%   1.000 ± 0%       ~ (p=1.000 n=10) ¹
DecodeString/4096-12    1.000 ± 0%   1.000 ± 0%       ~ (p=1.000 n=10) ¹
DecodeString/16384-12   1.000 ± 0%   1.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                 1.000        1.000       +0.00%

Change-Id: I5676e48f222d90786ea18e808cb4ecde9de82597
GitHub-Last-Rev: aeedf3f6c4
GitHub-Pull-Request: golang/go#67259
Reviewed-on: https://go-review.googlesource.com/c/go/+/584118
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-05-08 19:30:23 +00:00
aimuz 9e0685f9c2 encoding/json: optimize field sorting with slices and cmp
Refactor field sorting in typeFields to use slices.SortFunc and cmp.Compare,
resulting in performance improvements in cache misses and slight increases in
hit latency. Memory allocation and operation counts also reduced significantly
for cache misses.

goos: darwin
goarch: arm64
pkg: encoding/json
cpu: Apple M2 Max
                                    │   old.txt    │              new.txt               │
                                    │    sec/op    │   sec/op     vs base               │
TypeFieldsCache/MissTypes1-12          5.068µ ± 2%   5.032µ ± 1%       ~ (p=0.055 n=10)
TypeFieldsCache/MissTypes10-12         15.22µ ± 2%   14.79µ ± 2%  -2.84% (p=0.000 n=10)
TypeFieldsCache/MissTypes100-12        98.40µ ± 3%   94.72µ ± 1%  -3.73% (p=0.002 n=10)
TypeFieldsCache/MissTypes1000-12       860.3µ ± 3%   840.7µ ± 1%       ~ (p=0.105 n=10)
TypeFieldsCache/MissTypes10000-12      8.092m ± 3%   7.987m ± 4%       ~ (p=0.280 n=10)
TypeFieldsCache/MissTypes100000-12     80.90m ± 9%   80.62m ± 2%       ~ (p=0.631 n=10)
TypeFieldsCache/MissTypes1000000-12   1009.5m ± 7%   933.8m ± 7%  -7.50% (p=0.011 n=10)
TypeFieldsCache/HitTypes1-12           1.554n ± 3%   1.617n ± 3%  +4.05% (p=0.004 n=10)
TypeFieldsCache/HitTypes10-12          1.575n ± 1%   1.624n ± 6%  +3.14% (p=0.000 n=10)
TypeFieldsCache/HitTypes100-12         1.566n ± 1%   1.627n ± 5%  +3.86% (p=0.000 n=10)
TypeFieldsCache/HitTypes1000-12        1.526n ± 4%   1.596n ± 3%  +4.55% (p=0.001 n=10)
TypeFieldsCache/HitTypes10000-12       1.506n ± 0%   1.573n ± 3%  +4.41% (p=0.000 n=10)
TypeFieldsCache/HitTypes100000-12      1.480n ± 1%   1.529n ± 7%  +3.35% (p=0.001 n=10)
TypeFieldsCache/HitTypes1000000-12     1.473n ± 2%   1.468n ± 2%       ~ (p=0.739 n=10)
geomean                                1.371µ        1.374µ       +0.25%

                                    │     old.txt     │                new.txt                 │
                                    │      B/op       │     B/op       vs base                 │
TypeFieldsCache/MissTypes1-12          2.023Ki ± 0%      2.000Ki ± 0%  -1.16% (p=0.000 n=10)
TypeFieldsCache/MissTypes10-12         10.95Ki ± 0%      10.71Ki ± 0%  -2.17% (p=0.000 n=10)
TypeFieldsCache/MissTypes100-12       101.91Ki ± 0%      99.53Ki ± 0%  -2.34% (p=0.000 n=10)
TypeFieldsCache/MissTypes1000-12      1044.3Ki ± 0%     1020.8Ki ± 0%  -2.25% (p=0.000 n=10)
TypeFieldsCache/MissTypes10000-12      9.957Mi ± 0%      9.730Mi ± 0%  -2.29% (p=0.000 n=10)
TypeFieldsCache/MissTypes100000-12     97.79Mi ± 0%      95.50Mi ± 0%  -2.34% (p=0.000 n=10)
TypeFieldsCache/MissTypes1000000-12   1018.4Mi ± 0%      995.5Mi ± 0%  -2.25% (p=0.000 n=10)
TypeFieldsCache/HitTypes1-12             0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes10-12            0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes100-12           0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes1000-12          0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes10000-12         0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes100000-12        0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes1000000-12       0.000 ± 0%        0.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                                             ²                  -1.06%                ²
¹ all samples are equal
² summaries must be >0 to compute geomean

                                    │    old.txt    │               new.txt                │
                                    │   allocs/op   │  allocs/op   vs base                 │
TypeFieldsCache/MissTypes1-12          46.00 ± 0%      45.00 ± 0%  -2.17% (p=0.000 n=10)
TypeFieldsCache/MissTypes10-12         215.0 ± 0%      205.0 ± 0%  -4.65% (p=0.000 n=10)
TypeFieldsCache/MissTypes100-12       1.845k ± 0%     1.745k ± 0%  -5.42% (p=0.000 n=10)
TypeFieldsCache/MissTypes1000-12      18.08k ± 0%     17.08k ± 0%  -5.53% (p=0.000 n=10)
TypeFieldsCache/MissTypes10000-12     180.3k ± 0%     170.3k ± 0%  -5.55% (p=0.000 n=10)
TypeFieldsCache/MissTypes100000-12    1.804M ± 0%     1.704M ± 0%  -5.54% (p=0.000 n=10)
TypeFieldsCache/MissTypes1000000-12   18.04M ± 0%     17.04M ± 0%  -5.54% (p=0.000 n=10)
TypeFieldsCache/HitTypes1-12           0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes10-12          0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes100-12         0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes1000-12        0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes10000-12       0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes100000-12      0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
TypeFieldsCache/HitTypes1000000-12     0.000 ± 0%      0.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean                                           ²                -2.49%                ²
¹ all samples are equal
² summaries must be >0 to compute geomean

Change-Id: I62b8f524f5747f4f1b9241a1d849efeef1851049
GitHub-Last-Rev: d16772d4fb
GitHub-Pull-Request: golang/go#67046
Reviewed-on: https://go-review.googlesource.com/c/go/+/581895
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Joedian Reid <joedian@google.com>
2024-04-29 14:01:21 +00:00
Joe Tsai 1843464f01 all: consistently use "IEEE 754" over "IEEE-754"
There is no hyphen between the organization and the number.

For example, https://standards.ieee.org/ieee/754/6210/
shows the string "IEEE 754-2019" and not "IEEE-754-2019".

This assists in searching for "IEEE 754" in documentation
and not missing those using "IEEE-754".

Change-Id: I9a50ede807984ff1e2f17390bc1039f6a5d162e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/575438
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
TryBot-Result: Gopher Robot <gobot@golang.org>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-04-11 20:22:45 +00:00
apocelipes 08af216c75 encoding/json: use slices to simplify the code
Use "slices.Equal" instead of "reflect.DeepEqual".

Replace unnecessary helper type "byIndex" with "slices.SortFunc".

No effect on benchmarks.

Change-Id: I1fb2768ea6d9db7f487408fa109343be3f1741d5
GitHub-Last-Rev: 8429bc1452
GitHub-Pull-Request: golang/go#66646
Reviewed-on: https://go-review.googlesource.com/c/go/+/575715
Reviewed-by: qiu laidongfeng2 <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-04-11 16:40:14 +00:00
Daniel Martí 2e064cf144 encoding/csv: port the go-fuzz function to native fuzzing
Beyond the required file move and refactor to use the testing package,
a number of changes were made to get the fuzzing working properly.

First, add more logs to see what is going on.

Second, some option combinations set Comma to the null character,
which simply never worked at all. I suspect the author meant to leave
the comma character as the default instead.
This was spotted thanks to the added logging.

Third, the round-trip DeepEqual check did not work at all
when any comments were involved, as the writer does not support them.

Fourth and last, massage the first and second parsed records before
comparing them with DeepEqual, as the nature of Reader and Writer
causes empty quoted records and CRLF sequences to change.

With all the changes above, the fuzzing function appears to work
normally on my laptop now. I fuzzed for a solid five minutes and
could no longer encounter any errors or panics.

Change-Id: Ie27f65f66099bdaa076343cee18b480803d2e4d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/576375
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-04-05 01:26:13 +00:00
Shengyu Zhang 88b1d6115a encoding/json: prevent duplicate slicebytetostring
When storing literal to JSON number v, if s is valid number, the slicebytetostring operation will be performed twice. In fact, the operation is unavoidable on any code path, so just perform it at the very beginning.

This is not a big optimization, but better than nothing:

    $ ../bin/go test ./encoding/json/ -bench UnmarshalNumber -run NOTEST -benchtime 10000000x -count 16  > old.txt
    $ ../bin/go test ./encoding/json/ -bench UnmarshalNumber -run NOTEST -benchtime 10000000x -count 16  > new.txt
    $ benchstat old.txt new.txt
                      │   old.txt   │              new.txt               │
                      │   sec/op    │   sec/op     vs base               │
    UnmarshalNumber-8   234.5n ± 3%   228.2n ± 4%  -2.67% (p=0.033 n=16)

                      │  old.txt   │            new.txt             │
                      │    B/op    │    B/op     vs base            │
    UnmarshalNumber-8   168.0 ± 0%   168.0 ± 0%  ~ (p=1.000 n=16) ¹
    ¹ all samples are equal

                      │  old.txt   │            new.txt             │
                      │ allocs/op  │ allocs/op   vs base            │
    UnmarshalNumber-8   2.000 ± 0%   2.000 ± 0%  ~ (p=1.000 n=16) ¹
    ¹ all samples are equal

Change-Id: I1dfdb1ed0883e385f753b2046b7f047c792aa4e3
GitHub-Last-Rev: d236dd7265
GitHub-Pull-Request: golang/go#61242
Reviewed-on: https://go-review.googlesource.com/c/go/+/508556
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-04-02 15:00:17 +00:00