Change-Id: I375233dc700adbc58a6d4af995d07b352bf85b11
GitHub-Last-Rev: ef12920523
GitHub-Pull-Request: golang/go#55994
Reviewed-on: https://go-review.googlesource.com/c/go/+/437715
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asn1 allocates due to reflect.TypeOf(new(big.Int)) in init time.
We could replace it with (*big.Int)(nil).
Before:
init encoding/asn1 @1.0 ms, 0.009 ms clock, 224 bytes, 7 allocs
After:
init encoding/asn1 @0.70 ms, 0.002 ms clock, 192 bytes, 6 allocs
Fixes#55973
Change-Id: I7c3cc0f48631af73cf34ad3c731c380f46c72359
Reviewed-on: https://go-review.googlesource.com/c/go/+/435257
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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When decoding a struct, if a positive delta is large enough to overflow
when added to fieldnum, we would panic due to the resulting negative index.
Instead, catch this problem and produce an error like we do with
negative delta integers. If fieldnum ends up being negative or smaller
than state.fieldnum, the addition overflowed.
While here, remove an unnecessary break after an error call,
since those error functions cause a panic.
Fixes#55337.
Change-Id: I7a0e4f43e5c81a703e79c1597e3bb3714cc832c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/432715
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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Change-Id: I4698d0fa78108d83ee91732e8d3878dbff7f9c90
Reviewed-on: https://go-review.googlesource.com/c/go/+/436711
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Change-Id: I164d350ca480640996055dedf38d962921c474a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/435975
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Add a slightly expanded version of the Decoder type comment to the top
level package doc, which explains that this package is not designed
to be hardened against adversarial inputs.
Change-Id: I8b83433838c8235eb06ded99041fdf726c811ee5
Reviewed-on: https://go-review.googlesource.com/c/go/+/436096
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Change-Id: I3218b1e3f8869f579facddb29471df13c835dc66
Reviewed-on: https://go-review.googlesource.com/c/go/+/435281
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This avoids allocating an overly large slice for corrupt input.
Change the saferio.SliceCap function to take a pointer to the element type,
so that we can handle slices of interface types. This revealed that a
couple of existing calls were actually incorrect, passing the slice type
rather than the element type.
No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#55338
Change-Id: I3c1724183cc275d4981379773b0b8faa01a9cbd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/433296
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Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
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Change-Id: Ib07699df8ea41fd8d1bca8ad050859fac24623de
Reviewed-on: https://go-review.googlesource.com/c/go/+/428258
Reviewed-by: Robert Griesemer <gri@google.com>
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Change-Id: I5987eed00ee825421abe62699a06e9b66499f35f
Reviewed-on: https://go-review.googlesource.com/c/go/+/425016
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
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Flush can not check for unclosed elements, as more data might be encoded
after Flush is called. Close implicitly calls Flush and also checks that
all opened elements are closed as well.
Fixes#53346
Change-Id: I889b9f5ae54e5dfabb9e6948d96c5ed7bc1110f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/424777
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Change-Id: I50e5609ff9c5f2b216b93cec7fb5214d196cae90
Reviewed-on: https://go-review.googlesource.com/c/go/+/412537
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Fixes#53369
Change-Id: I67c5e75bf181ad84988d6d6da12507df0e6df8e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/413979
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
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The existing implementation has an execution time higher in the benchmark than this one.
This is an optimized implementation using the copy() function and a constant 256 bytes string with the values to be copied.
```
name old time/op new time/op delta
NewEncoding-4 329ns ± 1% 231ns ± 1% -29.72% (p=0.008 n=5+5)
name old speed new speed delta
NewEncoding-4 778MB/s ± 1% 1108MB/s ± 1% +42.29% (p=0.008 n=5+5)
```
Fixes#53211
Change-Id: I80fe62aa40623125ef81ae9164a8405eed30b71b
GitHub-Last-Rev: 55dce6f636
GitHub-Pull-Request: golang/go#53212
Reviewed-on: https://go-review.googlesource.com/c/go/+/410194
Reviewed-by: Keith Randall <khr@google.com>
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Replace loading and storing an atomic.Value of type pointer with
atomic.Pointer.
Change-Id: I018ac1e18eee4f203ebca65c2833daf991075371
Reviewed-on: https://go-review.googlesource.com/c/go/+/422174
Reviewed-by: Than McIntosh <thanm@google.com>
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Current init() implementation in `encoding/gob/decode.go` checks int/uint/uintptr bit size with reflection in runtime. We could replace it with values available on compile stage. This should reduce time and allocations on binary start.
Results from GODEBUG=inittrace=1:
before:
init encoding/gob @4.4 ms, 0.21 ms clock, 43496 bytes, 652 allocs
after:
init encoding/gob @4.4 ms, 0.15 ms clock, 41672 bytes, 643 allocs
Updates #54184
Change-Id: I46dda2682fb92519da199415e29401d61edce697
Reviewed-on: https://go-review.googlesource.com/c/go/+/420455
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For #53615
Change-Id: Ib85004d400931094fc1ea933cf73f4a5157aece1
Reviewed-on: https://go-review.googlesource.com/c/go/+/417559
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TestCVE202230633 uses a bunch of memory, and the input cannot be
feasibly reduced while maintaining the behavior hasn't regressed. This
test could be reasonably removed, but I'd rather keep it around if we
can.
Fixes#53814
Change-Id: Ie8b3f306efd20b2d9c0fb73122c26351a55694c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/417655
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Fixes#53350
Change-Id: Id5e1f4016db5f1d4349ee1a76a9dfe3aeae83cee
GitHub-Last-Rev: 45add12161
GitHub-Pull-Request: golang/go#53407
Reviewed-on: https://go-review.googlesource.com/c/go/+/412634
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Change-Id: I71c9d9ef9d21a7ae9466d8c7b283fdfbba01f5a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/390734
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Fixes#43401.
Change-Id: I2498e77e41d845130d95012bc8623bfb29c0dda1
Reviewed-on: https://go-review.googlesource.com/c/go/+/405675
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After an analysis, I figured that a way to do it could be to check, after
the call to readEncodedData whether the decoder already saw the end or not.
Fixes#38657
Change-Id: I06fd718ea4ee6ded2cb26c2866b28581ad86e271
GitHub-Last-Rev: d0b7bb38e4
GitHub-Pull-Request: golang/go#52631
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This adds a straight-forward implementation of the functionality.
A more performant version could be added that unrolls the loop
as is done in google.golang.org/protobuf/encoding/protowire,
but usages that demand high performance can use that package instead.
Fixes#51644
Change-Id: I9d3b615a60cdff47e5200e7e5d2276adf4c93783
Reviewed-on: https://go-review.googlesource.com/c/go/+/400176
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Previously, Decode called decodeError, a recursive function that was
prone to stack overflows when given a large PEM file containing errors.
Credit to Juho Nurminen of Mattermost who reported the error.
Fixes CVE-2022-24675
Fixes#51853
Change-Id: Iffe768be53c8ddc0036fea0671d290f8f797692c
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1391157
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Filippo Valsorda <valsorda@google.com>
(cherry picked from commit 794ea5e828010e8b68493b2fc6d2963263195a02)
Reviewed-on: https://go-review.googlesource.com/c/go/+/399820
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Run the updated gofmt, which reformats doc comments,
on the main repository. Vendored files are excluded.
For #51082.
Change-Id: I7332f099b60f716295fb34719c98c04eb1a85407
Reviewed-on: https://go-review.googlesource.com/c/go/+/384268
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
A future change to gofmt will rewrite
// Doc comment.
//go:foo
to
// Doc comment.
//
//go:foo
Apply that change preemptively to all comments (not necessarily just doc comments).
For #51082.
Change-Id: Iffe0285418d1e79d34526af3520b415a12203ca9
Reviewed-on: https://go-review.googlesource.com/c/go/+/384260
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go/doc in all its forms applies this replacement when rendering
the comments. We are considering formatting doc comments,
including doing this replacement as part of the formatting.
Apply it to our source files ahead of time.
For #51082.
Change-Id: Ifcc1f5861abb57c5d14e7d8c2102dfb31b7a3a19
Reviewed-on: https://go-review.googlesource.com/c/go/+/384262
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A future change to gofmt will rewrite
// Doc comment.
//
func f()
to
// Doc comment.
func f()
Apply that change preemptively to all doc comments.
For #51082.
Change-Id: I4023e16cfb0729b64a8590f071cd92f17343081d
Reviewed-on: https://go-review.googlesource.com/c/go/+/384259
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The existing implementation of the xml decoder uses the line number
only for reporting syntax errors. The line number of the last read
token and the column within the line is useful for the users even
in non-error conditions.
Fixes#45628
Change-Id: I37b5033ff5ff8411793d8f5180f96aa4537e83f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/311270
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Improve the test coverage of encoding/xml package by adding
the test cases for the execution paths that were not covered before.
Since it reveals a couple of issues, fix them as well while we're at it.
As I used an `strings.EqualFold` instead of adding one more `strings.ToLower`,
our fix to `autoClose()` tends to run faster as well as a result.
name old time/op new time/op delta
HTMLAutoClose-8 5.93µs ± 2% 5.75µs ± 3% -3.16% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
HTMLAutoClose-8 2.60kB ± 0% 2.58kB ± 0% -0.46% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
HTMLAutoClose-8 72.0 ± 0% 67.0 ± 0% -6.94% (p=0.000 n=10+10)
The overall `encoding/xml` test coverage increase is `88.1% -> 89.9%`;
although it may look insignificant, this CL covers some important corner cases,
like `autoClose()` functionality (that was not tested at all).
Fixes#49635Fixes#49636
Change-Id: I50b2769896c197eb285672313b7148f4fe8bdb38
Reviewed-on: https://go-review.googlesource.com/c/go/+/364734
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AppendByteOrder specifies new methods for LittleEndian and BigEndian
for appending an unsigned integer to a byte slice.
The performance of AppendXXX methods are slower than PutXXX methods
since the former needs to do a few slice operations,
while the latter is essentially a single integer store.
In practice, existing usages of PutXXX performed slicing operations
around the call such that this cost was present, regardless.
name time/op
PutUint16-24 0.48ns ± 2%
AppendUint16-24 1.54ns ± 1%
PutUint32-24 0.46ns ± 2%
AppendUint32-24 0.89ns ± 1%
PutUint64-24 0.46ns ± 2%
AppendUint64-24 0.89ns ± 1%
LittleEndianPutUint16-24 0.47ns ± 2%
LittleEndianAppendUint16-24 1.54ns ± 1%
LittleEndianPutUint32-24 0.45ns ± 3%
LittleEndianAppendUint32-24 0.92ns ± 2%
LittleEndianPutUint64-24 0.46ns ± 3%
LittleEndianAppendUint64-24 0.95ns ± 4%
Fixes#50601
Change-Id: I33d2bbc93a3ce01a9269feac33a2432bc1166ead
Reviewed-on: https://go-review.googlesource.com/c/go/+/386017
Trust: Joseph Tsai <joetsai@digital-static.net>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
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The latter returns a uintptr, while the former returns a unsafe.Pointer.
A uintptr is unsafe if Go ever switches to a moving GC,
while a unsafe.Pointer will be properly tracked by the GC.
We do not use unsafe.Pointer for any unsafe type conversions,
and only use it for comparability purposes, which is relatively safe.
Updates #40592
Change-Id: I813e218668704b63a3043acda4331205a3835a66
Reviewed-on: https://go-review.googlesource.com/c/go/+/360855
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When encoding a xml attribute is zero value (IsValid == false), we need
a `continue` to jump over the attribute. If not, followed marshalAttr
function will panic.
Fixes: #50164
Change-Id: I42e064558e7becfbf47728b14cbf5c7afa1e8798
Reviewed-on: https://go-review.googlesource.com/c/go/+/385514
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Adds simple fuzz targets to archive/tar, archive/zip, compress/gzip,
encoding/json, image/jpeg, image/gif, and image/png.
Second attempt, this time we don't use the archives in testdata when
fuzzing archive/tar, since those are rather memory intensive, and
were crashing a number of builders.
Change-Id: I4828d64fa4763c0d8c980392a6578e4dfd956e13
Reviewed-on: https://go-review.googlesource.com/c/go/+/378174
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This reverts CL 352109.
Reason for revert: causing OOM failures on several builders, and may cause OOMs for end users with small machines as well.
Change-Id: I58308d09919969d5a6512ee5cee6aa5c4af6769b
Reviewed-on: https://go-review.googlesource.com/c/go/+/377934
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And then revert the bootstrap cmd directories and certain testdata.
And adjust tests as needed.
Not reverting the changes in std that are bootstrapped,
because some of those changes would appear in API docs,
and we want to use any consistently.
Instead, rewrite 'any' to 'interface{}' in cmd/dist for those directories
when preparing the bootstrap copy.
A few files changed as a result of running gofmt -w
not because of interface{} -> any but because they
hadn't been updated for the new //go:build lines.
Fixes#49884.
Change-Id: Ie8045cba995f65bd79c694ec77a1b3d1fe01bb09
Reviewed-on: https://go-review.googlesource.com/c/go/+/368254
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Fixes#48521
Change-Id: Id8402bcff243c0ab19e4ec0b138b9af8c111f88d
Reviewed-on: https://go-review.googlesource.com/c/go/+/355492
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
When these packages are released as part of Go 1.18,
Go 1.16 will no longer be supported, so we can remove
the +build tags in these files.
Ran go fix -fix=buildtag std cmd and then reverted the bootstrapDirs
as defined in src/cmd/dist/buildtool.go, which need to continue
to build with Go 1.4 for now.
Also reverted src/vendor and src/cmd/vendor, which will need
to be updated in their own repos first.
Manual changes in runtime/pprof/mprof_test.go to adjust line numbers.
For #41184.
Change-Id: Ic0f93f7091295b6abc76ed5cd6e6746e1280861e
Reviewed-on: https://go-review.googlesource.com/c/go/+/344955
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
cui fliter
Tomasz Jezierski
Daniel Martí
cuiweixie
hopehook
Roland Shoemaker
Ian Lance Taylor
RenKanai
Andy Pan
Axel Wagner
Joe Tsai
ErikPelli
Ludi Rehak
Roland Shoemaker
shaoliming
Lukas Joisten
John Bampton
teivah
Julie Qiu
Russ Cox
Patrick Gundlach
eh-steve
Iskander Sharipov
Bryan Mills
Keith Randall
Josh Bleecher Snyder