Russ Cox [Thu, 3 Feb 2022 19:12:08 +0000 (14:12 -0500)]
all: gofmt main repo
[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>
Russ Cox [Sat, 29 Jan 2022 23:25:41 +0000 (18:25 -0500)]
go/printer: format doc comments
[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Use go/doc/comment to reformat doc comments into a
standard form, enabling future expansion later and generally
making it easier to edit and read doc comments.
For #51082.
Change-Id: I6ab3b80846f03d781951111e4c36f86f47d21bb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/384264
Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Jonathan Amsterdam <jba@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Implement wrapping of text output, for the “go doc” command.
The algorithm is from D. S. Hirschberg and L. L. Larmore,
“The least weight subsequence problem,” FOCS 1985, pp. 137-143.
For #51082.
Change-Id: I07787be3b4f1716b8ed9de9959f94ecbc596cc43
Reviewed-on: https://go-review.googlesource.com/c/go/+/397283
Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
go/doc/comment: add paragraph parsing and test framework
[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Implement parsing of plain text doc paragraphs,
as well as a txtar-based test framework. Subsequent CLs will
implement the rest of the possible markup.
For #51082.
Change-Id: I449aac69b44089f241fde8050ac134e17cb25116
Reviewed-on: https://go-review.googlesource.com/c/go/+/397278
Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Jonathan Amsterdam <jba@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Implement just the data structures of the new API for
parsing and printing doc comments, as well as a syntax tree
form for inspecting and manipulating them.
The API itself was discussed and accepted as part of the
proposal process in #51082.
For #51082.
Change-Id: Iae7fbc85705964585273b970c5c62e394feb1288
Reviewed-on: https://go-review.googlesource.com/c/go/+/397276
Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Jonathan Amsterdam <jba@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Wayne Zuo [Mon, 4 Apr 2022 08:32:29 +0000 (16:32 +0800)]
test: adjust load and store test
In the load tests, we only want to test the assembly produced by
the load operations. If we use the global variable sink, it will produce
one load operation and one store operation(assign to sink).
If we compile this function with GOAMD64=v3, it may produce MOVBEQload
and MOVQstore or MOVQload and MOVBEQstore, but we only want MOVBEQload.
Discovered when developing CL 395474.
Same for the store tests.
Change-Id: I65c3c742f1eff657c3a0d2dd103f51140ae8079e
Reviewed-on: https://go-review.googlesource.com/c/go/+/397875 Reviewed-by: Keith Randall <khr@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Meng Zhuo [Wed, 24 Nov 2021 08:33:14 +0000 (16:33 +0800)]
archive/zip: fail fast if UncompressedSize64 < nread
The zip reader checks that the uncompressed file size is valid
after all compressed files read until EOF.
However in between reading each file, there could have already
been an overflow where nread > UncompressedSize64 hence this
change will now return ErrFormat in such situations.
For various reasons Intel has suspended viewing web pages in the .ru
domain, so change the domain of the documents cited in the code
to the .com domain. In addition, the chapter numbers in the document
were updated and fix it.
Change-Id: I718be1548ec46f05ebc4f73873d4635c1d5fc76d
Reviewed-on: https://go-review.googlesource.com/c/go/+/399060 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
Ian Lance Taylor [Fri, 8 Apr 2022 23:23:35 +0000 (16:23 -0700)]
go/build: remove unused fileInfo.embedErr field
Change-Id: If86a0402dae32c57d07545ee6d818010e0e4b5ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/399255
Trust: Ian Lance Taylor <iant@golang.org>
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Paul E. Murphy [Thu, 24 Mar 2022 16:24:01 +0000 (11:24 -0500)]
crypto/aes: merge ppc64le crypt key expansion
It is not necessary to expand the key twice for each direction,
the decrypt key can be stored in reverse simultaneously.
Likewise, there is no need to store the key length alongside the
expanded keys, this is now inferred by the key length slice.
Noteably, the key expansion benchmark assumes the key array size
is the exact size of the expanded key.
Now, the ppc64le aes asm interface is identical to the generic
asm interface. Callsites and usage is updated to reflect this.
Performance uplift on POWER9 is substantial:
name old time/op new time/op delta
Expand 167ns ± 0% 49ns ± 0% -70.55%
Change-Id: I3fdaf9c27e8860e8150d4683eb4046d97a53293a
Reviewed-on: https://go-review.googlesource.com/c/go/+/398894
Run-TryBot: Paul Murphy <murp@ibm.com>
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Trust: Paul Murphy <murp@ibm.com>
Johan Jansson [Fri, 1 Apr 2022 11:00:09 +0000 (14:00 +0300)]
net/textproto: initialize commonHeader in canonicalMIMEHeaderKey
Call initCommonHeader in canonicalMIMEHeaderKey to ensure that
commonHeader is initialized before use. Remove all other calls to
initCommonHeader, since commonHeader is only used in
canonicalMIMEHeaderKey.
This prevents a race condition: read of commonHeader before
commonHeader has been initialized.
Add regression test that triggers the race condition which can be
detected by the race detector.
cmd/vendor: revert vendored code mistakenly modified in CL 398734
CL 398734 mistakenly modified
cmd/vendor/golang.org/x/arch/ppc64/ppc64asm/tables.go, which causes
the cmd/internal/moddeps to (correctly) fail due to modified vendored
code. This reverts the edit by re-running 'go mod vendor'.
qmuntal [Thu, 31 Mar 2022 12:15:22 +0000 (14:15 +0200)]
cmd/go: cgo export header to be compatible with MSVC complex types
After CL 379474 has landed, the only remaining cgo export header
incompatibility with MSVC is the use of the _Complex macro,
which is not supported in MSVC even when it is part of the ISO C99
standard (1).
Since MSVC 2015 (2), complex math are supported via _Fcomplex and
_Dcomplex, which are equivalent to float _Complex and double _Complex.
As MSVC and C complex types have the same memory layout, we should
be able to typedef GoComplex64 and GoComplex128 to the appropriate
type in MSVC.
It is important to note that this CL is not adding MSVC support to cgo.
C compilers should still be GCC-compatible.
This CL is about allowing to include, without further modifications,
a DLL export header generated by cgo, normally using Mingw-W64 compiler,
into a MSVC project. This was already possible if the export header
changes introduced in this CL were done outside cgo, either manually or
in a post-build script.
Fixes #36233
1: https://docs.microsoft.com/en-us/cpp/c-runtime-library/complex-math-support
2: https://docs.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance?c-standard-library-features-1
Change-Id: Iad8f26984b115c728e3b73f3a8334ade7a11cfa1
Reviewed-on: https://go-review.googlesource.com/c/go/+/397134 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>
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strings, bytes: improve the description of simple case-folding in EqualFold
This CL removes the problem description pointed out by @bjkail.
Second, synchronously modify the comments of the bytes package.
Updates #52022
Fixes #52204
Change-Id: I0aa52c774f40bb91f32bebdd2a62a11067a77be0
Reviewed-on: https://go-review.googlesource.com/c/go/+/398736 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Trust: Cherry Mui <cherryyz@google.com>
Paul E. Murphy [Thu, 24 Mar 2022 15:09:13 +0000 (10:09 -0500)]
crypto/aes: simplify key expansion in ppc64le asm
The ported cryptogam implementation uses a subtle and tricky mechanism
using lxv/vperm/lvsl to load unaligned vectors. This is difficult to
read, and may read and write unrelated bytes if reading from an
unaligned address.
Instead, POWER8 instructions can be used to load from unaligned memory
with much less overhead. Alignment interrupts only occur when reading
or writing cache-inhibited memory, which we assume isn't used in go
today, otherwise alignment penalties are usually marginal.
Instead lxvd2x+xxpermdi and xxpermdi+stxvd2x can be used to emulate
unaligned LE bytewise loads, similar to lxv/stxv on POWER9 in
little-endian mode.
Likewise, a custom permute vector is used to emulate BE bytewise
storage operations, lxvb16x/stxvb16x, on POWER9.
This greatly simplifies the code, and it makes it much easier to store
the keys in reverse (which is exactly how the decrypt keys are expected
to be stored).
Change-Id: I2334337e31a8fdf8d13ba96231142a039f237098
Reviewed-on: https://go-review.googlesource.com/c/go/+/395494 Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Trust: Paul Murphy <murp@ibm.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
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Ian Lance Taylor [Thu, 7 Apr 2022 20:02:35 +0000 (13:02 -0700)]
doc/go1.19: use the right package error.Is arguments
They were swapped.
Fixes #52205
Change-Id: Iea2626aa2204f3bc96d08c571a1aa669436a32ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/398895
Trust: Ian Lance Taylor <iant@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
Robert Griesemer [Sat, 2 Apr 2022 00:02:28 +0000 (17:02 -0700)]
cmd/compile: adjust types2 shift check to match go/types (cleanup)
With this change, the shift checking code matches the corresponding
go/types code, but for the differences in the internal error reporting,
and call of check.overflow.
The change leads to the recording of an untyped int value if the RHS
of a non-constant shift is an untyped integer value. Adjust the type
in the compiler's irgen accordingly. Add test/shift3.go to verify
behavior.
Change-Id: I20386fcb1d5c48becffdc2203081fb70c08b282d
Reviewed-on: https://go-review.googlesource.com/c/go/+/398236
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Nigel Tao [Thu, 31 Mar 2022 03:16:49 +0000 (14:16 +1100)]
image/draw: have draw.Src preserve NRGBA colors
This reverts a behavior change introduced in Go 1.18 (commit 9f69a443;
CL 340049). In Go 1.17 and earlier, draw.Draw(etc, draw.Src) with
image.NRGBA dst and src images would pass through a (heap allocated)
color.Color interface value holding a color.NRGBA concrete value.
Threading that color.NRGBA value all the way through preserves
non-premultiplied alpha transparency information (distinguishing e.g.
transparent blue from transparent red).
CL 340049 optimized out that heap allocation (per pixel), calling new
SetRGBA64At and RGBA64At methods instead. However, these methods (like
the existing image/color Color.RGBA method) work in premultiplied alpha,
so any distinction between transparent colors is lost.
This commit re-introduces the preservation of distinct transparencies,
when dst and src are both *image.NRGBA (or both *image.NRGBA64) and the
op is draw.Src.
Fixes #51893
Change-Id: Id9c64bfeeaecc458586f169f50b99d6c8aa52a7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/396795
Trust: Nigel Tao <nigeltao@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Change-Id: I01a3a5232525683c987b52ab8ece3fc18b6f431b
GitHub-Last-Rev: d2ec8fe536c7a1cdbd23017185447a86bee5a82a
GitHub-Pull-Request: golang/go#52194
Reviewed-on: https://go-review.googlesource.com/c/go/+/398714 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Trust: Daniel Martí <mvdan@mvdan.cc>
text/template: support delimiters that can be confused with actions
In fields that start with the same character as the right delimiter, the
whole delimiter needs to be checked. The first character alone is not
sufficient.
Fixes #52165
Change-Id: I1e4086048417693757f34d0e9ff3bf86aba0d35c
Reviewed-on: https://go-review.googlesource.com/c/go/+/398475
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Meng Zhuo [Tue, 29 Mar 2022 11:14:24 +0000 (19:14 +0800)]
cmd/internal/obj: set morestack arg spilling and regabi prologue on riscv64
This CL spill arg registers before calling morestack, unspill
after.
Also, avoid X11,X12,X13 in function prologue, which may carry
live argument value.
Roland Shoemaker [Tue, 8 Mar 2022 19:18:44 +0000 (11:18 -0800)]
crypto/x509: add new CRL parser, deprecate old one
Adds a new, cryptobyte based, CRL parser, which returns a
x509.RevocaitonList, rather than a pkix.CertificateList. This allows us
to return much more detailed information, as well as leaving open the
option of adding further information since RevocationList is not a
direct ASN.1 representation like pkix.CertificateList. Additionally
a new method is added to RevocationList, CheckSignatureFrom, which is
analogous to the method with the same name on Certificate, which
properly checks that the signature is from an issuing certiifcate.
This change also deprecates a number of older CRL related functions and
types, which have been replaced with the new functionality introduced
in this change:
* crypto/x509.ParseCRL
* crypto/x509.ParseDERCRL
* crypto/x509.CheckCRLSignature
* crypto/x509/pkix.CertificateList
* crypto/x509/pkix.TBSCertificateList
Fixes #50674
Change-Id: I27dc219e39bef09a396e666b4fccaa32578fd913
Reviewed-on: https://go-review.googlesource.com/c/go/+/390834 Reviewed-by: Damien Neil <dneil@google.com>
Trust: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
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Ian Lance Taylor [Thu, 31 Mar 2022 20:21:39 +0000 (13:21 -0700)]
net/url: preserve a trailing slash in JoinPath
Fixes #52074
Change-Id: I30897f32e70a6ca0c4e11aaf07088c27336efaba
Reviewed-on: https://go-review.googlesource.com/c/go/+/397256
Trust: Ian Lance Taylor <iant@golang.org>
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cmd/dist: move more environment logic into cmd/dist from make and run scripts
'go tool dist env' outputs different (and fewer) environment variables
than 'go env'. The 'go tool dist env' variables should be
authoritative, whereas many printed by 'go env' are merely
informational (and not intended to be overridden in the actual
environment).
cmd/internal/moddeps is currently failing on the longtest builders
because vendored third-party dependencies were accidentally edited as
part of CL 384262 (a global cleanup of the standard library).
Russ Cox [Mon, 14 Mar 2022 16:31:33 +0000 (12:31 -0400)]
hash/maphash: add Bytes and String
For very small inputs, h.Reset+h.Write+h.Sum64 is fundamentally
slower than a single operation, by about a factor of two, because
Write must copy the data into h's buffer, just in case there is another
Write before the Sum64.
A single function doing the whole sequence knows there is no extra
write that will happen, so it doesn't need the buffer, so it avoids the copy.
Russ Cox [Thu, 3 Feb 2022 19:05:46 +0000 (14:05 -0500)]
all: replace `` and '' with “ (U+201C) and ” (U+201D) in doc comments
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.
os/signal: run TestNotifyContextNotifications subtests in parallel
If we run out of time on the first subtest, we don't want to start the
second one with essentially no time remaining. (Moreover, there is no
compelling reason not to run these tests in parallel, since they send
signals to separate processes.)
For #51054.
Change-Id: I0424e08c3a9d2db986568d5a5c004859b52f7c51
Reviewed-on: https://go-review.googlesource.com/c/go/+/398454
Trust: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Henrique Vicente de Oliveira Pinto <henriquevicente@gmail.com>
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Roland Shoemaker [Wed, 2 Mar 2022 21:20:02 +0000 (13:20 -0800)]
crypto/x509: rework path building
This change does four things:
* removes the chain cache
* during path building, equality is determined by checking if the
subjects and public keys match, rather than checking if the entire
certificates are equal
* enforces EKU suitability during path building
* enforces name constraints on intermediates and roots which have
SANs during path building
The chain cache is removed as it was causing duplicate chains to be
returned, in some cases shadowing better, shorter chains if a longer
chain was found first.
Checking equality using the subjects and public keys, rather than the
entire certificates, allows the path builder to ignore chains which
contain cross-signature loops.
EKU checking is done during path building, as the previous behavior
of only checking EKUs once the path had been built caused the path
builder to incorrectly ignore valid paths when it encountered a path
which would later be ruled invalid because of unacceptable EKU usage.
Name constraints are applied uniformly across all certificates, not
just leaves, in order to be more consistent.
Fixes #48869
Fixes #45856
Change-Id: I4ca1cd43510d061e148f953d6c1ed935100fdb10
Reviewed-on: https://go-review.googlesource.com/c/go/+/389555 Reviewed-by: Damien Neil <dneil@google.com>
Trust: Cherry Mui <cherryyz@google.com>
Trust: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
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run.bat: use cmd/dist instead of 'go install' to rebuild std and cmd
cmd/dist may set and/or unset variables before building, and at any
rate it is fragile to run 'go install' before sourcing env.bat.
The build-stamp information embedded by the 'go' command is currently
sensitive to whether CGO_* variables are implicit or explicit, so running
'go install' before env.bat may cause stamped metadata to become stale.
(Explicitly setting to the default arguably ought to produce the same
metadata as leaving the variables unset, but that's a separate issue
and a bigger cleanup.)
Moreover, run.bat is supposed to parallel run.bash, and run.bash
already hasn't invoked 'go install' itself since CL 6531!
For #52009
Change-Id: Ie35217913f02cc7e0c3f9b12874abd7416473478
Reviewed-on: https://go-review.googlesource.com/c/go/+/398060
Trust: Bryan Mills <bcmills@google.com>
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cmd/go: quote fragments in CGO_ env variables reported by 'go env'
These fields have been parsed as quoted fields since CL 334732,
but we missed the unparsing side in 'go env'.
Certain scripts (notably make.ba{sh,t}) expect to be able to set the
environment to exactly what 'go env' reports, so for round-trip
purposes it is important to match the marshaling and unmarshaling
functions.
Filippo Valsorda [Sun, 27 Mar 2022 01:07:30 +0000 (03:07 +0200)]
crypto/elliptic: delete outdated fuzz test
It had not been doing anything since CL 233939, because the Params
method was getting upgraded to the assembly one. We could make it use
genericParamsForCurve, but really we need lower-level, targeted Go 1.18
fuzz targets in nistec now.
Filippo Valsorda [Thu, 10 Mar 2022 16:43:43 +0000 (11:43 -0500)]
crypto/rand: make Prime not deterministic for a fixed input stream
rand.Prime does not guarantee the precise prime selection algorithm as
part of its contract. For example, it changed slightly in CL 387554. We
want to ensure that no tests come to rely on it staying the same, so
just like other cryptographic functions that use randomness in an
unspecified way (ECDSA signing, RSA PKCS #1 v1.5 encryption, RSA key
generation), make it randomly read an extra byte or not.
Xiaodong Liu [Wed, 30 Mar 2022 08:52:59 +0000 (16:52 +0800)]
debug: define ELF relocation for loong64
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
For #46229
Change-Id: I0c58305754c20d2a59328adbd82caa527de254ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/396735 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Russ Cox [Fri, 25 Mar 2022 17:22:55 +0000 (13:22 -0400)]
make.bash: disable GOEXPERIMENT when using bootstrap toolchain
When using Go 1.4 this doesn't matter, but when using Go 1.17,
the bootstrap toolchain will complain about unknown GOEXPERIMENT settings.
Clearly GOEXPERIMENT is for the toolchain being built, not the bootstrap.
Already submitted as CL 395879 on the dev.boringcrypto branch,
but needed on master to set up GOEXPERIMENT=boringcrypto
builder ahead of merge.
Wayne Zuo [Wed, 2 Mar 2022 08:32:16 +0000 (16:32 +0800)]
cmd/compile: use shlx&shrx instruction for GOAMD64>=v3
The SHRX/SHLX instruction can take any general register as the shift count operand, and can read source from memory. This CL introduces some operators to combine load and shift to one instruction.
For #47120
Change-Id: I13b48f53c7d30067a72eb2c8382242045dead36a
Reviewed-on: https://go-review.googlesource.com/c/go/+/385174 Reviewed-by: Keith Randall <khr@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Matthew Dempsky [Tue, 15 Feb 2022 19:39:41 +0000 (11:39 -0800)]
cmd/compile: switch to final unified IR export format
Now that there's a native go/types importer for unified IR, the
compiler no longer needs to stay backwards compatible with old iexport
importers.
This CL also updates the go/types and go/internal/gcimporter tests to
expect that the unified IR importer sets the receiver parameter type
to the underlying Interface type, rather than the Named type. This is
a temporary workaround until we make a decision on #49906.
Notably, this makes `GOEXPERIMENT=unified go test` work on generics
code without requiring `-vet=off` (because previously cmd/vet was
relying on unified IR's backwards-compatible iexport data, which
omitted generic types).
Change-Id: Iac7a2346bb7a91e6690fb2978fb702fadae5559d
Reviewed-on: https://go-review.googlesource.com/c/go/+/386004
Trust: Matthew Dempsky <mdempsky@google.com>
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Matthew Dempsky [Tue, 15 Feb 2022 03:51:37 +0000 (19:51 -0800)]
go/internal/gcimporter: add support for unified IR
This CL ports unified IR's types2 importer back to the go/types
API. Notably, it drops support for lazy importing, because those APIs
aren't exposed yet via go/types.
Also, it supports unified IR's "final" data format, which wholey
replaces the iexport data format rather than the current
backwards-compatible hack that cmd/compile uses. The next CL will
switch the compiler to using this same format.
Change-Id: I44e1744bbdc384c9c354119975e68befdc117cff
Reviewed-on: https://go-review.googlesource.com/c/go/+/386002
Trust: Matthew Dempsky <mdempsky@google.com>
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Xiaodong Liu [Sun, 15 Aug 2021 06:57:00 +0000 (14:57 +0800)]
copyright: add Loongson into AUTHORS
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: I23fb430f1f6e8a587f13e2f020721cbd3a45d4ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/342303 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Rob Pike [Mon, 14 Mar 2022 02:21:06 +0000 (13:21 +1100)]
text/template: permit eq and ne funcs to check against nil
The existing code errors out immediately if the argument is not
"comparable", making it impossible to test a slice, map, and so
on from being compared to nil.
Fix by delaying the "comparable" error check until we encounter
an actual check between two non-comparable, non-nil values.
Note for the future: reflect makes it unnecessarily clumsy
to deal with nil values in cases like this. For instance, it
should be possible to check if a value is nil without stepping
around a panic. See the new functions isNil and canCompare
for my (too expensive) workaround.
Fixes #51642
Change-Id: Ic4072698c4910130ea7e3d76e7a148d8a8b88162
Reviewed-on: https://go-review.googlesource.com/c/go/+/392274 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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zlasd [Sun, 27 Mar 2022 13:17:53 +0000 (21:17 +0800)]
reflect: fix Value.NumMethod docs
NumMethod counts unexported methods for interface types. This
behavior is documented in Type.NumMethod
Fixes #42123
Change-Id: Ia5aba353a8cc64190c701d1521972d57e8903564
Reviewed-on: https://go-review.googlesource.com/c/go/+/396075 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Roland Shoemaker [Mon, 21 Mar 2022 18:58:08 +0000 (11:58 -0700)]
crypto/x509: only disable SHA-1 verification for certificates
Disable SHA-1 signature verification in Certificate.CheckSignatureFrom,
but not in Certificate.CheckSignature. This allows verification of OCSP
responses and CRLs, which still use SHA-1 signatures, but not on
certificates.
Updates #41682
Change-Id: Ia705eb5052e6fc2724fed59248b1c4ef8af6c3fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/394294
Trust: Roland Shoemaker <roland@golang.org>
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Cherry Mui [Fri, 1 Apr 2022 23:15:32 +0000 (19:15 -0400)]
runtime: use proper C ABI for race call on PPC64LE
On PPC64LE, the C ABI requires SP to be 16-byte aligned. Also, in
the C ABI the callee may save LR, CR, R2 etc. to the 4 reserved
words of the caller's frame. This CL aligns the SP and reserves
the space on stack.
Change-Id: I738880028815b7d3402647e4ebbdae37f45acc77
Reviewed-on: https://go-review.googlesource.com/c/go/+/397675
Trust: Cherry Mui <cherryyz@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Robert Griesemer [Sat, 2 Apr 2022 00:02:28 +0000 (17:02 -0700)]
go/types, types2: fix overlap test for union termlist
Per the spec, "the type sets of all non-interface terms must be
pairwise disjoint (the pairwise intersection of the type sets must
be empty)" in a union.
For the overlap test, the existing implementation casually mixed
syntactic union terms (which may have interface type) with type set
terms (which are normalized/expanded and must not have interface
type). As a consequence, in some cases the overlap test failed.
This change skips terms with interface types in the overlap test.
Fixes #51607.
Change-Id: I8ae9953db31f0a0428389c6a45a6696aa2450219
Reviewed-on: https://go-review.googlesource.com/c/go/+/397695
Trust: Robert Griesemer <gri@golang.org>
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hopehook [Sat, 12 Feb 2022 09:03:19 +0000 (17:03 +0800)]
reflect: fix the collision of variable name and package name
The return value "abi" of func "funcLayout" is the same as package
"internal/abi", which currently works fine, but it is more reliable to
avoid conflicts.
Change-Id: I83715dd79beff7cb3fc25747fef186dc0e2dfa8b
Reviewed-on: https://go-review.googlesource.com/c/go/+/385414
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Wayne Zuo [Wed, 30 Mar 2022 13:44:44 +0000 (21:44 +0800)]
cmd/compile: use LZCNT instruction for GOAMD64>=3
LZCNT is similar to BSR, but BSR(x) is undefined when x == 0, so using
LZCNT can avoid a special case for zero input. Except that case,
LZCNTQ(x) == 63-BSRQ(x) and LZCNTL(x) == 31-BSRL(x).
And according to https://www.agner.org/optimize/instruction_tables.pdf,
LZCNT instructions are much faster than BSR on AMD CPU.
Constantin Konstantinidis [Sun, 28 Nov 2021 14:19:15 +0000 (15:19 +0100)]
os: add handling of os.Interrupt for windows
Add GenerateConsoleCtrlEvent call to internal syscall package.
Define ErrProcessDone while reviewing handling of os.Signal().
Update test to run for windows using the added call.
Fixes #42311
Fixes #46354
Change-Id: I460955efc76c4febe04b612ac9a0670e62ba5ff3
Reviewed-on: https://go-review.googlesource.com/c/go/+/367495
Trust: Patrik Nyblom <pnyb@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Octal values over 255, like \400 or \777, are illegal. It wasn't clear if the expected behavior was a compile error, encoding the value as two characters, or if the value would be capped at 255.
This example explicitly shows that octal values over 255 are illegal.
Robert Findley [Wed, 30 Mar 2022 13:56:13 +0000 (09:56 -0400)]
go/types: don't report errors for untyped int shifts on Go < 1.13
CL 337529 introduced upfront type-checking of constant shift operands,
to avoid converting their type to uint (per the spec). However, it
had an oversight in that the checks intended for non-constant operands
still ran after the explicit checking of constant operands. As a
result, there are at least two bugs:
- When GoVersion is < 1.13, we report spurious errors for untyped
constant shift operands.
- When the operand is an untyped float constant, we still convert to
uint (this was a known bug reported in #47410).
Looking at this now, it seems clear that we can avoid both of these bugs
by simply not running the additional checks in the case of a constant
operand. However, this should be considered with some care, as shifts
are notoriously tricky.
Updates #47410
Fixes #52031
Change-Id: Ia489cc5470b92a8187d3de0423d05b309daf47bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/396775 Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Robert Findley <rfindley@google.com>
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hopehook [Wed, 30 Mar 2022 07:47:57 +0000 (15:47 +0800)]
strings: document the use of simple case-folding in EqualFold
Fixes #52022
Change-Id: I077fc062dfd02f79eb83713490efbe0bdc783d8b
Reviewed-on: https://go-review.googlesource.com/c/go/+/396616 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Russ Cox [Sun, 30 Jan 2022 00:07:27 +0000 (19:07 -0500)]
all: fix various doc comment formatting nits
A run of lines that are indented with any number of spaces or tabs
format as a <pre> block. This commit fixes various doc comments
that format badly according to that (standard) rule.
For example, consider:
// - List item.
// Second line.
// - Another item.
Because the - lines are unindented, this is actually two paragraphs
separated by a one-line <pre> block. This CL rewrites it to:
// - List item.
// Second line.
// - Another item.
Today, that will format as a single <pre> block.
In a future release, we hope to format it as a bulleted list.
Various other minor fixes as well, all in preparation for reformatting.
Than McIntosh [Thu, 31 Mar 2022 11:47:19 +0000 (07:47 -0400)]
debug/dwarf: better error handling in SeekPC
The dwarf.Reader "SeekPC" method was not properly handling the case
of a truncated/empty unit (something that has header information
but an empty abbrev table and no DIEs). Add some guards to handle
this case.
Fixes #52045.
Change-Id: I978163eca3b610f7528058693b840931e90d3f63
Reviewed-on: https://go-review.googlesource.com/c/go/+/397054 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Than McIntosh <thanm@google.com>
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