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>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
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>
Run-TryBot: David Chase <drchase@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
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>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
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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Reviewed-by: Michael Matloob <matloob@golang.org>
...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>
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: 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>
Run-TryBot: 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>
Run-TryBot: 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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Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
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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Reviewed-by: Robert Griesemer <gri@golang.org>
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>
Run-TryBot: 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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Reviewed-by: Robert Griesemer <gri@golang.org>
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>
Run-TryBot: 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>
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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
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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
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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>
Trust: Alex Brainman <alex.brainman@gmail.com>
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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>
One of escape analysis's responsibilities is to summarize whether/how
each function parameter flows to the heap so we can correctly
incorporate those flows into callers' escape analysis data flow
graphs.
As an optimization, we separately record when parameters flow to
result parameters, so that we can more precisely analyze parameter
flows based on how the results are used at the call site. However, if
a named result parameter itself needs to be heap allocated, this
optimization isn't safe and the parameter needs to be recorded as
flowing to heap rather than flowing to result.
Escape analysis used to get this correct because it conservatively
rewalked the data-flow graph multiple times. So even though it would
incorrectly record the result parameter flow, it would separately find
a flow to the heap. However, CL 196811 (specifically, case 3)
optimized the walking logic to reduce unnecessary rewalks causing us
to stop finding the extra heap flow.
This CL fixes the issue by correcting location.leakTo to be sensitive
to sink.escapes and not record result-flows when the result parameter
escapes to the heap.
Fixes#44614.
Change-Id: I48742ed35a6cab591094e2d23a439e205bd65c50
Reviewed-on: https://go-review.googlesource.com/c/go/+/297289
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
A function returning multiple results, some of them zero-width,
will have more than one result present at an offset. Be sure
that offset AND type match.
Includes test.
Change-Id: I3eb1f56116d989b4e73f533fefabb1bf554c901b
Reviewed-on: https://go-review.googlesource.com/c/go/+/297169
Trust: David Chase <drchase@google.com>
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Reviewed-by: Jeremy Faller <jeremy@golang.org>
This fixes two uncommon cases.
First, the tzdata code permits timezone offsets up to 24 * 7, although
the POSIX TZ parsing does not. The tzdata code uses this to specify a
day of week in some cases.
Second, we incorrectly rejected a negative time offset for when a time
zone change comes into effect.
Fixes#44385
Change-Id: I5f2efc1d385e9bfa974a0de3fa81e7a94b827602
Reviewed-on: https://go-review.googlesource.com/c/go/+/296392
Trust: Ian Lance Taylor <iant@golang.org>
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Currently this does things the old way by computing the number of
registers, but we're going to be using their ABI0 layout for the spill
space for now.
Change-Id: Ibcef1ee48fd834af7cbdaabe704bcabe066ed358
Reviewed-on: https://go-review.googlesource.com/c/go/+/293011
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Trust: Michael Knyszek <mknyszek@google.com>
- Deal with closures in generic functions by fixing the stenciling code
- Deal with instantiated function values (instantiated generic
functions that are not immediately called) during stenciling. This
requires changing the OFUNCINST node to an ONAME node for the
appropriately instantiated function. We do this in a second pass,
since this is uncommon, but requires editing the tree at multiple
levels.
- Check global assignments (as well as functions) for generic function
instantiations.
- Fix a bug in (*subst).typ where a generic type in a generic function
may definitely not use all the type args of the function, so we need
to translate the rparams of the type based on the tparams/targs of
the function.
- Added new test combine.go that tests out closures in generic
functions and instantiated function values.
- Added one new variant to the settable test.
- Enabling inlining functions with closures for -G=3. (For now, set
Ntype on closures in -G=3 mode to keep compatibility with later parts
of compiler, and allow inlining of functions with closures.)
Change-Id: Iea63d5704c322e42e2f750a83adc8b44f911d4ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/296269
Reviewed-by: Robert Griesemer <gri@golang.org>
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This allows users to specify which process should be used as the parent
process when creating a new process.
Note that this doesn't just trivially pass the handle onward to
PROC_THREAD_ATTRIBUTE_PARENT_PROCESS, because inherited handles must be
valid in the parent process, so if we're changing the destination
process, then we must also change the origin of the parent handles. And,
the StartProcess function must clean up these handles successfully when
exiting, regardless of where the duplication happened. So, we take care
in this commit to use DuplicateHandle for both duplicating and for
closing the inherited handles.
The test was taken originally from CL 288272 and adjusted for use here.
Fixes#44011.
Change-Id: Ib3b132028dcab1aded3dc0e65126c8abebfa35eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/288300
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This allows users to specify handles that they explicitly want to be
inherited by the new process. These handles must already be marked as
inheritable.
Updates #44011.
Updates #21085.
Change-Id: Ib18322e7dc2909e68c4209e80385492804fa15d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/288298
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Windows does not have CLOEXEC, but rather handles are marked explicitly
for being inherited by new processes. This can cause problems when
different Windows functions create new processes from different threads.
syscall.StartProcess has traditionally used a mutex to prevent races
with itself, but this doesn't handle races with other win32 functions.
Fortunately there's a solution: PROC_THREAD_ATTRIBUTE_HANDLE_LIST allows
us to pass the entire list of handles that we want to be inherited. This
lets us get rid of the mutex and also makes process creation safe across
the Go runtime, no matter the context.
Updates #44011.
Change-Id: Ia3424cd2ec64868849cbd6cbb5b0d765224bf4ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/288297
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This will allow us to pass additional attributes when starting
processes.
Updates #44011.
Change-Id: I4af365c5544a6d421830f247593ec970200e5e03
Reviewed-on: https://go-review.googlesource.com/c/go/+/288296
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
For now, this only add a single relocation type, which is sufficient for
Windows resources. Later we'll see if we need more for cgo.
In order to ensure these code paths are actually tested, this expands
the rsrc tests to include all the architectures of PE objects that we
need to be recognizing, and splits things more clearly between binutils
and llvm objects, which have a slightly different layout, so that we
test both.
This CL is part of a stack adding windows/arm64
support (#36439), intended to land in the Go 1.17 cycle.
Change-Id: Ia1ee840265e9d12c0b12dd1c5d0810f8b300e557
Reviewed-on: https://go-review.googlesource.com/c/go/+/289429
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
When using plugins, a type (whose value) may be pass to a plugin
and get converted to interface there, or vice versa. We need to
treat the type as potentially converted to interface, and retain
its methods.
Should fix#44586.
Change-Id: I80dd35e68baedaa852a317543ccd78d94628d13b
Reviewed-on: https://go-review.googlesource.com/c/go/+/296709
Trust: Cherry Zhang <cherryyz@google.com>
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In CL 253457, we did the same fix for direct function calls. But for
method calls, the receiver argument also need to be passed through the
wrapper function, which we are not doing so the compiler crashes with
the code in #44415.
It will be nicer if we can rewrite OCALLMETHOD to normal OCALLFUNC, but
that will be for future CL. The passing receiver argument to wrapper
function is easier for backporting to go1.16 branch.
Fixes#44415
Change-Id: I03607a64429042c6066ce673931db9769deb3124
Reviewed-on: https://go-review.googlesource.com/c/go/+/296490
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
StaticLECall (multiple value in +mem, multiple value result +mem) ->
StaticCall (multiple ergister value in +mem,
multiple register-sized-value result +mem) ->
ARCH CallStatic (multiple ergister value in +mem,
multiple register-sized-value result +mem)
But the architecture-dependent stuff is indifferent to whether
it is mem->mem or (mem)->(mem) until Prog generation.
Deal with OpSelectN -> Prog in ssagen/ssa.go, others, as they
appear.
For #40724.
Change-Id: I1d0436f6371054f1881862641d8e7e418e4a6a16
Reviewed-on: https://go-review.googlesource.com/c/go/+/293391
Trust: David Chase <drchase@google.com>
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ComputeAddrtaken needs to descend into closures, now that imported
bodies can include closures. The bug was that we weren't properly
setting Addrtaken for a variable inside a closure inside a function that
we were importing.
For now, still disable inlining of functions with closures for -G mode.
I'll enable it in a later change -- there are just a few fixes related
to the fact that we don't need to set Ntype for closure functions.
Added a test derived from the cilium repro in the issue.
Fixes#44370
Change-Id: Ida2a403636bf8740b471b3ad68b5474951811e19
Reviewed-on: https://go-review.googlesource.com/c/go/+/296649
Run-TryBot: Dan Scales <danscales@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
These are the the most common uses, and they reduce line noise.
I don't love adding new deprecated APIs,
but since they're trivial wrappers,
it'll be very easy to update them along with the rest.
No functional changes; passes toolstash-check.
Change-Id: I691a8175cfef9081180e463c63f326376af3f3a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/296009
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Updates #42637
Change-Id: I4c7d38034b60c2c04efdeb530a97d96deddfd6fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/284152
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This reverts commit CL 294849.
Reason for revert: this doesn't actually fix the issue, as revealed
by the noopt builder's failures.
Change-Id: Ib4ea9ceb4d75e46b3b91ec348b365fd8c83316ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/296629
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
The IsExported method is a more intuitive helper for checking whether
the method or field is exported than checking whether PkgPath is empty.
In the same CL, modify the standard library to make use of this helper.
Fixes#41563
Change-Id: Iaacfb3b74449501f98e2707aa32095a32bd3c3c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/266197
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
The code for delayed declaration of inlined result parameters only
handles non-empty return statements. This is generally okay, because
we already early declare if there are any (non-blank) named result
parameters.
But if a user writes a function with only blank result parameters and
with exactly one return statement, which is empty, then they could end
up hitting the dreaded "Value live at entry" ICE.
This CL fixes the issue by ensuring we always early declare inlined
result parameters if there are any empty return statements.
Fixes#44355.
Change-Id: I315f3853be436452883b1ce31da1bdffdf24d506
Reviewed-on: https://go-review.googlesource.com/c/go/+/293293
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Reviewed-by: David Chase <drchase@google.com>
Instead of alloc+copy to convert the string
to a byte slice, do an unsafe conversion.
Rely on the kernel not to scribble on the
buffer during the write.
Fixes#42406
Change-Id: I66f4838b43a11bcc3d67bbfa1706726318d55343
Reviewed-on: https://go-review.googlesource.com/c/go/+/268020
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
This change allows driver implementations to manage resources in
driver.Connector, e.g. to share the same underlying database handle
between multiple connections. That is, it allows embedded databases
with in-memory backends like SQLite and Genji to safely release the
resources once the sql.DB is closed.
This makes it possible to address oddities with in-memory stores in
SQLite and Genji drivers without introducing too much complexity in
the driver implementations.
See also:
- https://github.com/mattn/go-sqlite3/issues/204
- https://github.com/mattn/go-sqlite3/issues/511
- https://github.com/genjidb/genji/issues/210Fixes#41790
Change-Id: Idbd19763134438ed38288b9d44f16608e4e97fd7
GitHub-Last-Rev: 962c785dfb
GitHub-Pull-Request: golang/go#41710
Reviewed-on: https://go-review.googlesource.com/c/go/+/258360
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
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