Fixes#70935
Change-Id: Idf4a38a05ba595d616b6469a14419ff873bbd354
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Change-Id: I07e7c8eaa5bd4bac0d576b2f2f4cd3f81b0b77a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/630055
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Sometimes we've used the 140 suffix (GOFIPS140, crypto/fips140)
and sometimes not (crypto/internal/fips, cmd/go/internal/fips).
Use it always, to avoid having to remember which is which.
Also, there are other FIPS standards, like AES (FIPS 197), SHA-2 (FIPS 180),
and so on, which have nothing to do with FIPS 140. Best to be clear.
For #70123.
Change-Id: I33b29dabd9e8b2703d2af25e428f88bc81c7c307
Reviewed-on: https://go-review.googlesource.com/c/go/+/630115
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For #69536
Change-Id: Id0bb46fbb39c205ebc903e72e706bbbaaeec6dbd
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The original triple is `[13,17,5]` which don't existed in the Xorshift
RNG paper.
This CL use the right triple `[13,7,17]` for 64 bits RNG.
Fixes#70144
Change-Id: I3e3d475835980d9f28451ab73e3ce61eb2f1685e
Reviewed-on: https://go-review.googlesource.com/c/go/+/624295
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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
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Make it obvious that numbers wasn't modified, but clone was.
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Fixes#68488
Change-Id: I39aba22cdfe8ca0bbe69db7c64f1bca75fa067fa
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All changes are related to the code, except for the comments in src/regexp/syntax/parse.go and src/slices/slices.go.
Change-Id: I73c5d3c54099749b62210aa7f3182c5eb84bb6a6
GitHub-Last-Rev: 794aa9b053
GitHub-Pull-Request: golang/go#69170
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Fixes#69104
Change-Id: Ie928239d5ef198ce36759ec4cffb7f6320ff3b82
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Change-Id: I13e878579b51638c2c07ad3ea99be7276177875c
Reviewed-on: https://go-review.googlesource.com/c/go/+/603735
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Like slices.Repeat, use math/bits.Mul to detect overflow in order to
avoid a divide which is slow.
While here, also use builtin min/max to simplify code.
Change-Id: I4a6d8cd5df97fa75f4e324d4be1405ce53c03d31
GitHub-Last-Rev: 54ba5c7126
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Fixes#68472
Change-Id: I21282621d679d9e2b032256b338c0b5ff107c8f4
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For #61899
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Change-Id: Idea4f92d511b5f18531758667cb0cb5ed6f91a0a
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Chunk returns an iterator over consecutive sub-slices of up to n elements of s.
Fixes#53987.
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Fixes#61899
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To make it easier to read.
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slices.SortFunc requires a three-way comparison and we need an
efficient strings.Compare to perform three-way string comparisons.
This new implementation adds bytealg.CompareString as a wrapper of
runtime_cmpstring and changes Compare to use bytealg.CompareString.
The new implementation of Compare with runtime_cmpstring is about
28% faster than the previous one.
Fixes#61725
│ /tmp/gobench-sort-cmp.txt │ /tmp/gobench-sort-strings.txt │
│ sec/op │ sec/op vs base │
SortFuncStruct/Size16-48 918.8n ± 1% 726.6n ± 0% -20.92% (p=0.000 n=10)
SortFuncStruct/Size32-48 2.666µ ± 1% 2.003µ ± 1% -24.85% (p=0.000 n=10)
SortFuncStruct/Size64-48 1.934µ ± 1% 1.331µ ± 1% -31.22% (p=0.000 n=10)
SortFuncStruct/Size128-48 3.560µ ± 1% 2.423µ ± 0% -31.94% (p=0.000 n=10)
SortFuncStruct/Size512-48 13.019µ ± 0% 9.071µ ± 0% -30.33% (p=0.000 n=10)
SortFuncStruct/Size1024-48 25.61µ ± 0% 17.75µ ± 0% -30.70% (p=0.000 n=10)
geomean 4.217µ 3.018µ -28.44%
Change-Id: I2513b6f8c1b9b273ef2d23f0a86f691e2d097eb6
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To use (len(x) * count) consistently.
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A slice expression of the form:
s[a:len(s)]
will be simplified to:
s[a:]
This is one of the simplifications that "gofmt -s" applies.
See https://pkg.go.dev/golang.org/x/tools/gopls/internal/analysis/simplifyslice
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For Clone, Grow, Clip, Concat, Contains, Repeat.
Fixes#66435
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The rotate-by-reverse code in fact does only 2 writes per entry, so
it is fine and simpler.
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Fixes#65669
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Fixes#65446
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This will otherwise trigger an "unusedresult" vet check.
Fixes#64978
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The panic message of the current implementation for index out of range is not ideal.
This PR tries to improve it.
Fixes#63913 and #64152
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Makes Delete return early if no elements need to be deleted.
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To avoid memory leaks in slices that contain pointers, clear the elements between the new length and the original length.
Fixes#63393
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The current implementation of the builtin copy function will return early
when it is found that the addresses of the first elements of the two
slice arguments are identical, so it is unnecessarily to do this in user code.
See #57759 for details.
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No need for an explicit nil check. Slicing the input slice
down to zero capacity also preserves nil.
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Fixes#56353
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Also add a go:generate command to the standard library slices package.
For #61374
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Reuse IndexFunc function to avoid confusing subscript indexing, and to reduce code nesting depth.
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There are currently no examples in the new slices and maps package, so
add some. This adds examples for most functions in the slices package
except the very obvious ones, and adds examples for the DeleteFunc and
EqualFunc functions in the maps package.
Also clarify/correct a few doc comments:
* EqualFunc takes an "equality" function, not a "comparison" function
* It's confusing for Delete and DeleteFunc to say they "do not create a
new slice", as they do return a new slice. They already say they
"return the modified slice" which is enough.
* Similar for Compact, and mention that it returns the modified slice
(and say why)
* Note that CompactFunc keeps the first element in equal runs
* Say what cmp is in SortStableFunc and IsSortedFunc
* Say that MinFunc and MaxFunc return the first value
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They should return the first of equal elements. No such clarification
is required for Min/Max as for them equal elements are indistinguishable.
For #60091
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Make all functions use a constraint S ~[]E even if they don't return
the slice type. This makes explicitly instantiating the functions more
consistent: you don't have to remember which take ~[]E and which do not.
It also permits inferring the type when passing one of these functions
to some other function that is using a named slice type.
Fixes#60546
Change-Id: Ib3435255d0177fdbf03455ae527d08599b1ce012
Reviewed-on: https://go-review.googlesource.com/c/go/+/502955
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Axel Wagner <axel.wagner.hh@googlemail.com>
Reviewed-by: Eli Bendersky <eliben@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
We'd like to mention in a comment that users should prefer
slices.IsSorted over sort.IntsAreSorted and similar
functions. Create a benchmark that shows this.
goos: linux
goarch: amd64
pkg: slices
cpu: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
BenchmarkIntsAreSorted-8 6031 198315 ns/op
BenchmarkIsSorted-8 26580 45801 ns/op
Change-Id: I4f14fafd799ecec35c8a5215b74994e972103061
Reviewed-on: https://go-review.googlesource.com/c/go/+/502556
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Eli Bendersky <eliben@golang.org>
Reviewed-by: Eli Bendersky <eliben@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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