That's an invalid operation and depend on gc.hidePanic to report error.
Updates #43311
Change-Id: Ib0761dcf4d9d2a23c41de7eff0376677a90b942e
Reviewed-on: https://go-review.googlesource.com/c/go/+/294033
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
While at it, also remove checkassignlist, which is not used.
For #43311
Change-Id: Ie7ed81f68080d8881fca6035da64a9755f2cb555
Reviewed-on: https://go-review.googlesource.com/c/go/+/294032
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
That's an invalid operation and depend on gc.hidePanic to report error.
Updates #43311
Change-Id: I78d615c40ab1e7887f612491e215c1c2bb758ef6
Reviewed-on: https://go-review.googlesource.com/c/go/+/294031
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
When syntax.Parse returns error, noder.file will be nil. Currently, we
continue accessing it regardlessly and depend on gc.hidePanic to hide
the panic from user.
Instead, we should gracefully handle the error in LoadPackage, then exit
earlier if any error occurred.
Updates #43311
Change-Id: I0a108ef360bd4f0cc9f481071b8967355e1513af
Reviewed-on: https://go-review.googlesource.com/c/go/+/294030
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
still needs morestack
still needs results
lots of corner cases also not dealt with.
For #40724.
Change-Id: I03abdf1e8363d75c52969560b427e488a48cd37a
Reviewed-on: https://go-review.googlesource.com/c/go/+/293889
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Additional register-parameter plumbing, not all the way to the end;
if you test register parameter-passing, it fails mid-compilation.
For #40724.
Change-Id: Ibb675022c9156779a451726329890e52fca1cb33
Reviewed-on: https://go-review.googlesource.com/c/go/+/293398
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Jeremy Faller <jeremy@golang.org>
Moved all "target" information into "storeRC"; it was a register
cursor, now it is a register cursor that also carries the store
target with it if there are no registers. Also allows booby-trapping
to ensure that the target is unambiguously one or the other.
For #40724.
Change-Id: I53ba4b91679e5fcc89c63b7d31225135299c6ec6
Reviewed-on: https://go-review.googlesource.com/c/go/+/293397
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The argument class check in addpool is unnecessary, remove it so that we don't
need to list all the compatiable classes.
Change-Id: I36f6594db35e25db22fe898273e024c2db4cb771
Reviewed-on: https://go-review.googlesource.com/c/go/+/283492
Trust: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Arm64 doesn't have scaled register format, such as (R1*2), (R1)(R2*3),
but currently the assembler doesn't report an error for such kind of
instruction operand format. This CL disables the scaled register
operand format for arm64 and reports an error if this kind of instruction
format is seen.
With this CL, the assembler won't print (R1)(R2) as (R1)(R2*1), so that
we can make the assembly test simpler.
Change-Id: I6d7569065597215be4c767032a63648d2ad16fed
Reviewed-on: https://go-review.googlesource.com/c/go/+/289589
Trust: eric fang <eric.fang@arm.com>
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Currently any variable that is spilled onto the stack will occupy at least 8 bytes,
because the stack offset is required to be aligned with 8 bytes on linux/arm64.
This CL removes this constraint by aligning the stack slot with its actual size.
Updates #42385
Change-Id: Icbd63dc70cd19852802e43f134355f19ba7e1e29
Reviewed-on: https://go-review.googlesource.com/c/go/+/267999
Trust: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Constant of BITCON type can be moved into RSP by MOVD or MOVW instructions
directly, this CL enables this format of these two instructions.
For 32-bit ADDWop instructions with constant, rewrite the high 32-bit
to be a repetition of the low 32-bit, just as ANDWop instructions do,
so that we can optimize ADDW $bitcon, Rn, Rt as:
MOVW $bitcon, Rtmp
ADDW Rtmp, Rn, Rt
The original code is:
MOVZ $bitcon_low, Rtmp
MOVK $bitcon_high,Rtmp
ADDW Rtmp, Rn, Rt
Change-Id: I30e71972bcfd6470a8b6e6ffbacaee79d523805a
Reviewed-on: https://go-review.googlesource.com/c/go/+/289649
Trust: eric fang <eric.fang@arm.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
This CL adds support for arm64 fp&simd instructions VUMAX and VUMIN.
Fixes#42326
Change-Id: I3757ba165dc31ce1ce70f3b06a9e5b94c14d2ab9
Reviewed-on: https://go-review.googlesource.com/c/go/+/271497
Trust: eric fang <eric.fang@arm.com>
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Reviewed-by: fannie zhang <Fannie.Zhang@arm.com>
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This CL adds assembly support for 128-bit FLDPQ and FSTPQ instructions.
This CL also deletes some wrong pre/post-indexed LDP and STP instructions,
such as {ALDP, C_UAUTO4K, C_NONE, C_NONE, C_PAIR, 74, 8, REGSP, 0, C_XPRE},
because when the offset type is C_UAUTO4K, pre and post don't work.
Change-Id: Ifd901d4440eb06eb9e86c9dd17518749fdf32848
Reviewed-on: https://go-review.googlesource.com/c/go/+/273668
Trust: eric fang <eric.fang@arm.com>
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This is a direct port of CL 298129 to go/types.
Fixes#44688
Change-Id: I950992ea7beea5b9c8bea0c296b5ce03b2aa9b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/298349
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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Methods of generic types are instantiated lazily (upon use). Thus,
when we encounter a method of such a type, we need to instantiate
the method signature with the receiver type arguments. We infer
those type arguments from the method receiver. If the method is
embedded, we must use the actual embedded receiver type, otherwise
the receiver type declared with the method doesn't match up and
inference will fail.
(Note that there's no type inference in the source code here, it's
only the implementation which uses the existing inference mechanism
to easily identify the actual type arguments. If the implementation
is correct, the inference will always succeed.)
Updates #44688.
Change-Id: Ie35b62bebaeaf42037f2ca00cf8bd34fec2ddd9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/298129
Trust: Robert Griesemer <gri@golang.org>
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This fix uses mutex around the problematic store and subsequent access;
if this causes performance problems later a better fix is to do all the
ABI binding in gc/walk where it is single-threaded.
Change-Id: I488f28ab75beb8351c856fd50b0095cab463642e
Reviewed-on: https://go-review.googlesource.com/c/go/+/298109
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
Also handles case where OpArg does not escape but has its address
taken.
May have exposed a lurking bug in 1.16 expandCalls,
if e.g., loading len(someArrayOfstructThing[0].secondStringField)
from a local. Maybe.
For #40724.
Change-Id: I0298c4ad5d652b5e3d7ed6a62095d59e2d8819c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/293396
Trust: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The 32 bit versions are easily implement with a single instruction, while the
8 bit versions require a bit more effort but use the same atomic instructions
via rewrite rules.
Change-Id: I42e8d457b239c8f75e39a8e282fc88c1bb292a99
Reviewed-on: https://go-review.googlesource.com/c/go/+/268098
Trust: Joel Sing <joel@sing.id.au>
Run-TryBot: Joel Sing <joel@sing.id.au>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
This allows the use of CLONE_VFORK and CLONE_VM for fork/exec, preventing
'fork/exec ...: cannot allocate memory' failures from occuring when attempting
to execute commands from a Go process that has a large memory footprint.
Additionally, this should reduce the latency of fork/exec on these platforms.
Fixes#31936
Change-Id: I4e28cf0763173145cacaa5340680dca9ff449305
Reviewed-on: https://go-review.googlesource.com/c/go/+/295849
Trust: Joel Sing <joel@sing.id.au>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
in progress; doesn't fully work until they are also passed on
register on the caller side.
For #40724.
Change-Id: I29a6680e60bdbe9d132782530214f2a2b51fb8f6
Reviewed-on: https://go-review.googlesource.com/c/go/+/293394
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Change-Id: Ib82e1c8c549c91e20c5aff5e50736617c6831f8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/277792
Run-TryBot: Baokun Lee <bk@golangcn.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Trust: Alberto Donizetti <alb.donizetti@gmail.com>
This CL applies CL 267999 to mips64.
Updates #42385
Change-Id: Ideab21be0d8c1a36b3be7411b24adac70a3d16e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/297771
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: eric fang <eric.fang@arm.com>
Run-TryBot: eric fang <eric.fang@arm.com>
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types thought it knew how to do this, but that's a lie, because types
doesn't know what the ABI is.
includes extra checking to help prevent things from accidentally working
if they need to be changed but aren't.
For #40724.
Change-Id: I166cd948f262344b7bebde6a2c25e7a7f878bbfb
Reviewed-on: https://go-review.googlesource.com/c/go/+/293393
Trust: David Chase <drchase@google.com>
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About one run out of 3 it fails on my laptop, and
I am tired of having to be a nanny for my tests just
because of this one flaky test. This has been a problem
for months.
Updates #32218.
Change-Id: I2871d4c6f47e9432d189ed7bdcda8f9c0871cfc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/297469
Trust: David Chase <drchase@google.com>
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If we don't actually require the listed module, we previously
implicitly resolved "latest", but also (erroneously) forgot to apply
exclusions and retractions for it. But there is really no need to
resolve "latest" in this case at all — now we omit the version from
the reported module info entirely.
Fixes#44296
Change-Id: Id595f52f597c7213bd65b73bf066a678d9e1d694
Reviewed-on: https://go-review.googlesource.com/c/go/+/297150
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
For #44296
Change-Id: I310f99ccd406622e39f3fbfa12f7a3bee39602db
Reviewed-on: https://go-review.googlesource.com/c/go/+/297149
Trust: Bryan C. Mills <bcmills@google.com>
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In CL 251159, I removed a hard-coded special case changing the
rewriting behavior for std dependencies in GOROOT/src/vendor and
GOROOT/src/cmd/vendor. Unfortunately, that caused packages in 'std' to
be reported as stale when run within GOROOT/src.
This change restores the special-case behavior, but plumbs it through
the PackageOpts explicitly instead of comparing strings stored in
global variables.
Fixes#44725
Change-Id: If084fe74972ce1704715ca79b0b7e092dd90c88b
Reviewed-on: https://go-review.googlesource.com/c/go/+/297869
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Previously, mvs.Downgrade could introduce spurious dependencies if the
downgrade computed for one module lands on a “hidden” version (such as
a pseudo-version) due to a requirement introduced by the downgrade for
another module.
To eliminate those spurious dependencies, we can add one more call to
BuildList to recompute the “actual” downgraded versions, and then
including only those actual versions in the final call to BuildList.
For #36460
Change-Id: Icc6b54aa004907221b2bcbbae74598b0e4100776
Reviewed-on: https://go-review.googlesource.com/c/go/+/294294
Trust: Bryan C. Mills <bcmills@google.com>
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...and run commands from there.
This removes the requirement that bootstrap must not run inside a module
by ensuring that enclosing modules do not interfere with bootstrap.
Fixes#44209.
Change-Id: I700a81829226770b8160c8ff04127b855b6e26bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/296610
Trust: Jay Conrod <jayconrod@google.com>
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improved to run on more architectures.
this is in preparation for turning off calculation of frame offsets
in types.CalcSize.
Replaces https://go-review.googlesource.com/c/go/+/293392 .
Updates #44675.
For #40724.
Change-Id: I40ba496172447cf09b86bc646148859363c11ad9
Reviewed-on: https://go-review.googlesource.com/c/go/+/297637
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
Add generic rule to rewrite the single-precision square root expression
with one single-precision instruction. The optimization will reduce two
times of precision converting between double-precision and single-precision.
On arm64 flatform.
previous:
FCVTSD F0, F0
FSQRTD F0, F0
FCVTDS F0, F0
optimized:
FSQRTS S0, S0
And this patch adds the test case to check the correctness.
This patch refers to CL 241877, contributed by Alice Xu
(dianhong.xu@arm.com)
Change-Id: I6de5d02281c693017ac4bd4c10963dd55989bd7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/276873
Trust: fannie zhang <Fannie.Zhang@arm.com>
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Reviewed-by: Keith Randall <khr@golang.org>
When netpollopen in poll_runtime_pollOpen returns an error, the work in
runtime_pollUnblock and runtime_pollClose can be avoided since the
underlying system call to set up the poller failed.
E.g. on linux, this avoids calling netpollclose and thus epoll_ctl(fd,
EPOLL_CTL_DEL, ...) in case the file does not support epoll, i.e.
epoll_ctl(fd, EPOLL_CTL_ADD, ...) in netpollopen failed.
Fixes#44552
Change-Id: I564d90340fd1ab3a6490526353616a447ae0cfb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/297392
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Go already rejects relative paths in a couple environment variables,
It should reject relative paths in GOMODCACHE.
Fixes#43715
Change-Id: Id1ceff839c7ab21c00cf4ace45ce48324733a526
Reviewed-on: https://go-review.googlesource.com/c/go/+/284432
Run-TryBot: Baokun Lee <bk@golangcn.org>
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Trust: Jay Conrod <jayconrod@google.com>
Trust: Baokun Lee <bk@golangcn.org>
While the dev.typeparams branch was merged, the type parameter API is
slated for go1.18. Hide these changes to the go/parser and go/types API.
This was done as follows:
+ For APIs that will probably not be needed for go1.18, simply unexport
them.
+ For APIs that we expect to export in go1.18, prefix symbols with '_',
so that the planned (upper-cased) symbol name is apparent.
+ For APIs that must be exported for testing, move both API and tests
to files guarded by the go1.18 build constraint.
+ parser.ParseTypeParams is unexported and copied wherever it is
needed.
+ The -G flag is removed from gofmt, replaced by enabling type
parameters if built with the go1.18 build constraint.
Notably, changes related to type parameters in go/ast are currently left
exported. We're looking at the AST API separately.
The new API diff from 1.16 is:
+pkg go/ast, method (*FuncDecl) IsMethod() bool
+pkg go/ast, method (*ListExpr) End() token.Pos
+pkg go/ast, method (*ListExpr) Pos() token.Pos
+pkg go/ast, type FuncType struct, TParams *FieldList
+pkg go/ast, type ListExpr struct
+pkg go/ast, type ListExpr struct, ElemList []Expr
+pkg go/ast, type TypeSpec struct, TParams *FieldList
+pkg go/types, type Config struct, GoVersion string
Change-Id: I1baf67e26279b49092e774309a836c460979774a
Reviewed-on: https://go-review.googlesource.com/c/go/+/295929
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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MIPS32 uses .gnu.attributes and .MIPS.abiflags sections to mark FP ABI
the object is using, and the kernel will set the correct FP mode for it.
Currrently Go doesn't generate these 2 sections. If we link object
without these 2 sections togather FPXX objects, the result will be FPXX,
which is wrong:
FP32 + FPXX -> FP32
FPXX + FP64 -> FP64
FP32 + FP64 -> reject
These 2 sections is also needed to support FPXX and FP64 in future.
More details about FP32/FPXX/FP64 are explained in:
https://web.archive.org/web/20180828210612/https://dmz-portal.mips.com/wiki/MIPS_O32_ABI_-_FR0_and_FR1_InterlinkingFixes#39677
Change-Id: Ia34e7461dee38a4f575dd8ace609988744512ac1
Reviewed-on: https://go-review.googlesource.com/c/go/+/239217
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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Trust: Meng Zhuo <mzh@golangcn.org>
CL 197938 changed syscall* functions to call entersyscall, instead
of entersyscallblock. It missed syscall_syscallX, probably because
it was in sys_darwin_64.go, not sys_darwin.go like others. Change
that one as well.
Found during the review of CL 270380 (thanks Joel).
Change-Id: I0884fc766703f555a3895be332dccfa7d2431374
Reviewed-on: https://go-review.googlesource.com/c/go/+/286435
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
The changes from the (reviewed) dev.regabi copy of expr.go can be seen
by comparing patchset 2 and 7. The actual change is some small
improvements to readability and consistency in untyped conversion,
adding some missing documentation, and removing the "// REVIEW
INCOMPLETE" marker.
Note that expr.go diverges from types2 in its handling of untyped
conversion.
Change-Id: I13a85f6e08f43343e249818245aa857b1f4bf29c
Reviewed-on: https://go-review.googlesource.com/c/go/+/295729
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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On import, make sure that an empty closure is represented as a single
empty block statement. Otherwise, the closure is dropped. Block
statements are not exported explicitly, so must recreate on import.
Fixes#44330
Change-Id: I061598f0f859dd71d2d0cbd10c77cdd81525d1f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/297569
Run-TryBot: Dan Scales <danscales@google.com>
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Trust: Dan Scales <danscales@google.com>
This incorporates CL 297089, which allows leading dots in import path
elements but not module path elements. Also added a test.
Fixes#43985
Updates #34992
Change-Id: I2d5faabd8f7b23a7943d3f3ccb6707ab5dc2ce3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/297530
Trust: Jay Conrod <jayconrod@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Fix a small stale comment in FinishCaptureNames (refers to old code
structure before the big refactoring).
Change-Id: I2dfb84ce238f919f6e17061439a8bd9b09459dae
Reviewed-on: https://go-review.googlesource.com/c/go/+/296829
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This reverts CL 293392.
Reason for revert: broke most non-x86 builders
Fixes#44675
Change-Id: I1e815c3ab27a02e83a2f0d221a617909dd021403
Reviewed-on: https://go-review.googlesource.com/c/go/+/297549
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jeremy Faller <jeremy@golang.org>
If a canonical version is passed to fixVersion when loading the main
go.mod and that version don't match the module path's major version
suffix, don't call Query.
Query doesn't return a useful error in this case when the path is
malformed, for example, when it doens't have a dot in the first path
element. It's better to report the major version mismatch error.
Fixes#44494
Change-Id: I97b1f64aee894fa0db6fb637aa03a51357ee782c
Reviewed-on: https://go-review.googlesource.com/c/go/+/296590
Trust: Jay Conrod <jayconrod@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Now that we don't automatically pass all inheritable handles to new
processes, we can make pipes returned by os.Pipe() inheritable, just
like they are on Unix. This then allows them to be passed through the
SysProcAttr.AdditionalInheritedHandles parameter simply.
Updates #44011.
Fixes#21085.
Change-Id: I8eae329fbc74f9dc7962136fa9aae8fb66879751
Reviewed-on: https://go-review.googlesource.com/c/go/+/288299
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
this is in preparation for turning off calculation of frame offsets
in types.CalcSize
For #40724.
Change-Id: I2c29fd289c014674076e5ec5170055dbca5ea64b
Reviewed-on: https://go-review.googlesource.com/c/go/+/293392
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Jeremy Faller <jeremy@golang.org>
