Change-Id: I50e5609ff9c5f2b216b93cec7fb5214d196cae90
Reviewed-on: https://go-review.googlesource.com/c/go/+/412537
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
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Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
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This is both simpler and more performant.
Change-Id: I398de29230e578fb7caf1765df7b8fe84d4e8876
Reviewed-on: https://go-review.googlesource.com/c/go/+/412336
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
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We don't need compression enabled here, because we only set one question in the dns message. So there is nothing to compress. Also it reduces 8 allocs per LookupHost.
Change-Id: I0968f837011daf6d7a7b22d9af4a8cc5b2878f4c
GitHub-Last-Rev: 7eb3362bca
GitHub-Pull-Request: golang/go#54576
Reviewed-on: https://go-review.googlesource.com/c/go/+/425043
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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On ARM64 we use two separate instructions to compute the hi and lo
results of a 64x64->128 multiplication. Lower to two separate ops
so if only one result is needed we can deadcode the other.
Fixes#54607.
Change-Id: Ib023e77eb2b2b0bcf467b45471cb8a294bce6f90
Reviewed-on: https://go-review.googlesource.com/c/go/+/425101
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
There is already a skip in case of a later failure in the same test on
these platforms. Skip the failure if it occurs earlier too.
For #43120.
Change-Id: Id530370caa6a7df8cae593f6fdcb66871b86b125
Reviewed-on: https://go-review.googlesource.com/c/go/+/425096
Run-TryBot: Bryan Mills <bcmills@google.com>
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Use OpVarDef only when the variable being defined has pointers in it.
VarDef markers are only used for liveness analysis, and that only
runs on pointer-ful variables.
Fixes#53810
Change-Id: I09b0ef7ed31e72528916fe79325f80bbe69ff9b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/419320
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Joedian Reid <joedian@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Neither are currently used. These concepts only need to exist
in the ssa backend (as ssa.OpVarDef and ssa.OpVarLive).
Change-Id: I8d6bd14aa7967b2156e5e9a103b95146e5552f36
Reviewed-on: https://go-review.googlesource.com/c/go/+/419319
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
os/exec.Cmd.Wait closes the read end of os/exec.Cmd.StdoutPipe, meaning
that io.ReadAll can return fs.ErrClosed if the child exits too early,
allowing Wait to complete. The StdoutPipe docs already note this sharp
edge.
Move cmd.Wait until after we finish waiting on stdout. If the child
crashes for some reason, the write end of the pipe will implicitly close
causing io.ReadAll to return as well, so we won't get stuck.
Fixes#52725.
Change-Id: Ifae5745d86206879af2f1523a664236972e07252
Reviewed-on: https://go-review.googlesource.com/c/go/+/420597
Run-TryBot: Michael Pratt <mpratt@google.com>
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The existing decode() method offers the ability to keep just one
frame of the GIF image, however it will read and decompress all
subsequent frames regardless.
Fixes#41142
Change-Id: I0c3c11f9c11cd487b6c365e9a8b98e617d555db0
GitHub-Last-Rev: 03ebc8ee7b
GitHub-Pull-Request: golang/go#46813
Reviewed-on: https://go-review.googlesource.com/c/go/+/329329
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Nigel Tao (INACTIVE; USE @golang.org INSTEAD) <nigeltao@google.com>
Check for malformed data when reading the number of aux
symbols associated with a symbol table entry.
Fixes#54584.
Change-Id: Ic2a8d4d6a1d481d585a065b8182de86294c3d3d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/425049
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I was profiling the cpu usage of go/printer's only benchmark,
and found that token.File.Unpack was one of the top offenders.
It was mainly the deferred unlock that took a big chunk of time,
and to my surprise, reoving the use of defer helped significantly:
name old time/op new time/op delta
Print-16 5.61ms ± 2% 5.38ms ± 1% -4.04% (p=0.000 n=10+8)
name old speed new speed delta
Print-16 9.27MB/s ± 2% 9.64MB/s ± 1% +4.03% (p=0.000 n=9+8)
name old alloc/op new alloc/op delta
Print-16 332kB ± 0% 332kB ± 0% ~ (p=0.363 n=10+10)
name old allocs/op new allocs/op delta
Print-16 3.45k ± 0% 3.45k ± 0% ~ (all equal)
It seems like #38471 is to blame, as the defer prevents Unlock from
being inlined. Add a TODO as a reminder to come back here once the
compiler issue is fixed.
Change-Id: I5a1c6d36a8e8357435a305a1bc0970ee0358b08a
Reviewed-on: https://go-review.googlesource.com/c/go/+/424920
Reviewed-by: Alan Donovan <adonovan@google.com>
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ReadData follows the error semantics of io.ReadFull for small sizes,
it should do so as well for large sizes.
Change-Id: I6a11b00d903ac5332e1dda074473790dcf21f32a
Reviewed-on: https://go-review.googlesource.com/c/go/+/424919
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Auto-Submit: Joseph Tsai <joetsai@digital-static.net>
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
We don't have a good musl detection mechanism, so we detect Alpine (the
most common user of musl) instead.
For #39857.
For #19938.
Change-Id: I2fa39248682aed75884476374fe2212be4427347
Reviewed-on: https://go-review.googlesource.com/c/go/+/425001
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
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To avoid false positives from the reflectvaluecompare checker #43993
Use v.IsValid() instead of
var zero reflect.Value
v != zero
Also avoid comparing directly with the singleton reflect.Value
representing a missing value. Detect the missing value by type instead.
Change-Id: I3a00d63cf61c077e7c7ae816474aa1f032be325b
Reviewed-on: https://go-review.googlesource.com/c/go/+/308769
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This makes it possible to use `disasm` with ASLR windows binaries.
For #46639
Change-Id: I08aff38dc0b33fdfb07e0206766db066e33207d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/416976
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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Occasionally the signal will be sent to a Go thread, which will cause
the program to exit with SIGQUIT rather than SIGSEGV.
Add TestSignalForwardingGo to test the case where the signal is
expected to be delivered to a Go thread.
This is a roll forward of CL 419014 which was rolled back in CL 424954.
This CL differs from 419014 in that it skips TestSignalForwardingGo
on darwin-amd64.
Fixes#53907
Change-Id: I5df3fd610c068df3bd48d9b3d7a9379248b97999
Reviewed-on: https://go-review.googlesource.com/c/go/+/425002
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Change-Id: Idc1f8b3fb6b4b2fdcc6dade048cc14c53715319f
Reviewed-on: https://go-review.googlesource.com/c/go/+/424197
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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#53787
Change-Id: I1b75a4c000b8d1112110309ec44b0ba9b4638d71
Reviewed-on: https://go-review.googlesource.com/c/go/+/416861
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Reviewed-by: Dan Kortschak <dan@kortschak.io>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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#52521
Change-Id: I6a046f2e28e1255cf773ce135c5bb2b967ef43e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/414234
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Reviewed-by: Dan Kortschak <dan@kortschak.io>
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This follows on CL 407176 which added this function (in both
packages). This CL makes it consistent with the Cut function,
which uses “before” and “after” in return variable names.
Change-Id: Id4345d2fe0f50bf301a880803e87bf356986b518
Reviewed-on: https://go-review.googlesource.com/c/go/+/424922
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Depending on the implementation of the getrusage syscall/function, the
value of rusage.Maxrss may be undefined in case of an error. Thus, only
report MaxRSS in case of no error.
Change-Id: I7572ccc53c49eb460e53bded3eb41736eed8d2ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/424815
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Use "method has no receiver" and "method has multiple receivers"
in error messages for invalid receiver counts, matching the
corresponding types2 errors.
For #54511.
Change-Id: I96fc99440d6206c74e9416069db052234baa8248
Reviewed-on: https://go-review.googlesource.com/c/go/+/424934
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Use "middle" and "final" rather than "2nd" and "3rd" in error messages
for invalid slice expressions. This is the original compiler error
message and many tests check for this specific message.
For #54511.
Change-Id: I86eb739aa7218b7f393fab1ab402732cb9e9a1f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/424906
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Use "invalid" rather than "incomparable" in error message for map key
types that are not comparable. This is the original compiler error
message and many tests check for this specific message. The type
checker does provide an additional explanation if the reason for
the error is not obvious (e.g. for type parameters).
For #54511.
Change-Id: Idb76c48b4dfbfd66a7deac728a552e07f14e06d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/424905
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Use same approach to parsing const and var declarations
as the syntax package. Specifically, don't complain if
the first const specification in a const declaration
doesn't have a type and initialization expression. This
removes some duplicate errors when combined with the
type checker.
Adjust corresponding type checker tests accordingly.
For #54511.
Change-Id: I96702eba51dda6b581dad44577a7f93e4c02c857
Reviewed-on: https://go-review.googlesource.com/c/go/+/424904
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Change-Id: Ia00acf248f3498d75e2451548f82d3c57cfed06f
Reviewed-on: https://go-review.googlesource.com/c/go/+/424995
Run-TryBot: Michael Pratt <mpratt@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
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Make spelling consistent with uses in other error messages.
Change-Id: I584cd22413842fb8bae1632ed34c8b0e7ef163cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/424902
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
All code may be generic. Remove machinery to select parsing
mode (generic vs non-generic) since the parser doesn't support
this anymore. Adjust tests to more closely match corresponding
types2 code.
Change-Id: Id2398afe64d58714974ec96656fdf67c02ff5d04
Reviewed-on: https://go-review.googlesource.com/c/go/+/424900
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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Generics are part of the language now; there's no need anymore
to switch back to a syntax without generics. Remove the associated
machinery and adjust short tests accordingly.
Change-Id: I6b16c5c75fd9354ee87e3b9bee110f49f514565a
Reviewed-on: https://go-review.googlesource.com/c/go/+/424857
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The validity of an import path string is checked by the type checker
(and possibly other tools); it doesn't need to be done by the parser.
Remove the respective code and tests.
Also, adjust a corresponding go/types test which resolves a TODO.
For #54511.
Change-Id: Id1fc80df4e3e83be3ef123da3946ccb8f759779f
Reviewed-on: https://go-review.googlesource.com/c/go/+/424855
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Since the examples tests are now identical between the two type checkers,
remove the local copy of the examples tests and (for now) use the tests
in go/types/testdata/examples instead. Eventually we may decide to move
all tests out of the type checker directories and place them in a
shared space (e.g. internal/types/testdata).
For #54511.
Change-Id: Ibd8599d09e781b2219a23114b4b2049757971181
Reviewed-on: https://go-review.googlesource.com/c/go/+/424695
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Follow-up on CL 424674. With this change, the files in
testdata/examples are identical to the corresponding
files for types2.
For #54511.
Change-Id: Ic61c089bbf61492094e31057ad2635803f50a30d
Reviewed-on: https://go-review.googlesource.com/c/go/+/424714
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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This was never permitted in Go but the flexibility to do so
was introduced through the generics prototype code where we
experimented with parentheses to enclose type parameters.
Restore original (pre-generics) behavior.
Fixes#51655.
Change-Id: Ia7a4b2e393e0214a70e840c8663cf4474c5c754b
Reviewed-on: https://go-review.googlesource.com/c/go/+/424694
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Older kernels which require the double check of the __kuser_cmpxchg
result are no longer supported as of Go 1.18 which requires at least
Linux 2.6.32.
For #45964
Change-Id: Ic3d6691bf006353ac51b9d43e742d970e3d4e961
Reviewed-on: https://go-review.googlesource.com/c/go/+/424556
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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Offsetwriter refers to the design of SectionReader and removes
the section parameter n.
Since the size of the written data is determined by the user,
we cannot know where the end offset of the original data is.
The offset of SeekEnd is not valid in Seek method.
Fixes#45899.
Change-Id: I9d9445aecfa0dd4fc5168f2f65e1e3055c201b45
Reviewed-on: https://go-review.googlesource.com/c/go/+/406776
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AppendRune appends the UTF-16 encoding of a rune to a []uint16.
BenchmarkEncodeValidASCII-12 24.61ns 16B 1allocs
BenchmarkEncodeValidJapaneseChars-12 18.79ns 8B 1allocs
BenchmarkAppendRuneValidASCII-12 6.826ns 0B 0allocs
BenchmarkAppendRuneValidJapaneseChars-12 3.547ns 0B 0allocs
The ASCII case is written to be inlineable.
Fixes#51896
Change-Id: I593b1029f603297ef6e80e036f2fee2a0938d38d
Reviewed-on: https://go-review.googlesource.com/c/go/+/409054
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Though it increases the execution time, the function is already quite
fast for most users, the allocation is much more important.
name old time/op new time/op delta
ByteReplacerWriteString-8 1.23µs ± 0% 2.16µs ± 1% +75.31% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
ByteReplacerWriteString-8 2.69kB ± 0% 0.00kB -100.00% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
ByteReplacerWriteString-8 1.00 ± 0% 0.00 -100.00% (p=0.000 n=10+10)
Change-Id: I6a36df5fcb8e11ef27e6c7b252aa88e869592f3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/424136
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Support for Linux kernel versions requiring the fallback to CloseOnExec
was dropped from recent Go versions. The minimum Linux kernel version is
2.6.32 as of Go 1.18. The SOCK_CLOEXEC flag for the socket syscall is
supported since kernel version 2.6.27.
Follows a similar change for net.sysSocket in CL 403634.
For #45964
Change-Id: I8b6311f07c4ed7900a9af3ecb2e146c49db08665
Reviewed-on: https://go-review.googlesource.com/c/go/+/422374
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The constants for these were auto-generated from the C includes
into zerrors_linux* files quite some time ago. The generator is
currently broken, but some new flags need to be added nevertheless.
As the flags won't change and the values are the same for all
architectures, we can just define them statically (as it's already
done in the runtime package):
- remove the CLONE_* constants from zerrors_linux_*.go;
- patch mkerrors.sh to not generate CLONE_ constants
(in case it will be fixed and used in the future);
- add the constants and some comments about them to exec_linux.go,
using Linux v5.17 include/uapi/sched.h as the ultimate source.
This adds the following new flags:
- CLONE_CLEAR_SIGHAND
- CLONE_INTO_CGROUP
- CLONE_NEWCGROUP
- CLONE_NEWTIME
- CLONE_PIDFD
For #51246.
Change-Id: I0c635723926218bd403d37e113ee4d62194463a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/407574
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joedian Reid <joedian@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
