Instead route through a C function, to avoid declaration conflicts
between the declaration needed in the cgo comment and the declaration
generated by cgo in _cgo_export.h.
This is not something user code will ever do, so no need to make it
work in cgo.
Fixes#46502
Change-Id: I1bfffdc76ef8ea63e3829871298d0774157957a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/327309
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
I initially made NewClosureFunc take an "outerfn *Func" parameter
because I was planning on having it handle closure naming, until
remembering that naming needs to wait until typecheck for noder.
We don't actually need the *Func yet, just to know whether it's
non-nil. So change the parameter to a bool, which simplifies callers a
little.
Change-Id: Ie83ee4a1ed0571ac6d3879ffd8474c6c3c1a9ff9
Reviewed-on: https://go-review.googlesource.com/c/go/+/327450
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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TryBot-Result: Go Bot <gobot@golang.org>
This CL copies go/build's splitQuoted function (used for parsing #cgo
directives within `import "C"` preambles) to parse test recipe
commands. In particular, this now allows writing "build" and "run"
tests that use -gcflags to pass multiple compiler flags.
Change-Id: I0d18a9c13a4ce24bbdfa1da8662c0498c93a6762
Reviewed-on: https://go-review.googlesource.com/c/go/+/327275
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
typecheck.tcClosure is complicated with many code flows because all of
its callers setup the closure funcs in slightly different ways. E.g.,
it's non-obvious who's responsible for setting the underlying func's
Sym or adding it to target.Decls, or how to write new code that
constructs a closure without interfering with existing code.
This CL refactors everything to use three common functions in package
ir: NewClosureFunc (which handle creating the Func, Name, and
ClosureExpr and wiring them together), NameClosure (which generates
and assigns its unique Sym), and UseClosure (which handles adding the
Func to target.Decls).
Most IR builders can actually name the closure right away, but the
legacy noder+typecheck path may not yet know the name of the enclosing
function. In particular, for methods declared with aliased receiver
parameters, we need to wait until after typechecking top-level
declarations to know the method's true name. So they're left anonymous
until typecheck.
UseClosure does relatively little work today, but it serves as a
useful spot to check that the code setting up closures got it right.
It may also eventually serve as an optimization point for early
lifting of trivial closures, which may or may not ultimately be
beneficial.
Change-Id: I7da1e93c70d268f575b12d6aaeb2336eb910a6f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/327051
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Instead of using ir.DeepCopy to copy the IR from the previous constant
declaration, just call exprList again and then fix up the position
information. This is equivalent in practice, but has cleaner semantics
for tricky corner cases like constant declarations that contain
function literals.
In particular, this refactoring is necessary for the next CL that
cleans up function literal construction, because it adds extra
consistency checks that weren't satisfied by DeepCopy'd OCLOSUREs.
Change-Id: I0372bde5d6613695ee572cc8bf8fb4ff9aef4cb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/327449
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
callMethod previously assumed erroneously that between the "value" and
"method" ABIs (that is, the ABI the caller is following to call this
method value and the actual ABI of the method), it could never happen
that an argument passed on the stack in the former could be passed in
registers in the latter. The cited reason was that the latter always
uses strictly more registers.
However, there are situations where the value ABI could pass a value on
the stack, but later is passed in a register. For instance, if the
receiver pushes a value passed in registers that uses multiple registers
to be passed on the stack, later arguments which were passed on the
stack may now be passed in registers.
This change fixes callMethod to no longer makes this assumption, and
handles the stack-to-register translation explicitly.
Fixes#46696.
Change-Id: I7100a664d97bbe401302cc893b3a98b28cdcdfc0
Reviewed-on: https://go-review.googlesource.com/c/go/+/327089
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
This CL adds a simple framework for augmenting the current export data
format by writing out additional data *after* the existing data, with
an extra header before it that current readers ignore.
In particular, this is used by unified IR to be able to experiment and
iterate on export data designs without having to keep the
go/internal/gcimporter and x/tools/go/gcexportdata importers in
sync. Instead, they simply continue reading the existing data written
out by typecheck/iexport.go.
Change-Id: I883211c2892e2c7dec758b85ff6bc31b244440a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/327169
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Always enable regabig on AMD64, which enables the G register and
the X15 zero register. Remove the fallback path.
Also remove the regabig GOEXPERIMENT. On AMD64 it is always
enabled (this CL). Other architectures already have a G register,
except for 386, where there are too few registers and it is
unlikely that we will reserve one. (If we really do, we can just
add a new experiment).
Change-Id: I229cac0060f48fe58c9fdaabd38d6fa16b8a0855
Reviewed-on: https://go-review.googlesource.com/c/go/+/327272
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The powershell that currently ships on ARM Windows isn't native, so it
won't load native DLLs. So just skip the tests for now, and reenable it
if this ever changes.
Updates #46701.
Change-Id: I2559fdf13cb65d3ecdc4c6f6df7dec1b490b9651
Reviewed-on: https://go-review.googlesource.com/c/go/+/327210
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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Always enable regabiwrappers on AMD64. GOEXPERIMENT=none will not
turn it off.
Change-Id: I0aa208c02157661ac3676b753bcfbfa050b99e41
Reviewed-on: https://go-review.googlesource.com/c/go/+/327271
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Fixes#46466
Change-Id: I8fb15d0c8ef7ef6e6fc1b9e0e033d213255fe0df
Reviewed-on: https://go-review.googlesource.com/c/go/+/326778
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Now that deferred functions are always argumentless and defer
records are no longer with arguments, defer record can be fixed
size (just the _defer struct). This allows us to simplify the
allocation of defer records, specifically, remove the defer
classes and the pools of different sized defers.
Change-Id: Icc4b16afc23b38262ca9dd1f7369ad40874cf701
Reviewed-on: https://go-review.googlesource.com/c/go/+/326062
Trust: Cherry Mui <cherryyz@google.com>
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TryBot-Result: Go Bot <gobot@golang.org>
newproc was not allowed to split stack because it had a special
stack layout, where the go'd function's arguments were passed on
stack but not included in the signature (therefore the stack map).
Now it no longer has argument, so it does not need to be nosplit.
Change-Id: I6f39730fb1595c4b0438c74118fef418fe1c082b
Reviewed-on: https://go-review.googlesource.com/c/go/+/325919
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This CL fixes reflectdata.methodWrapper to compile wrapper functions
for method expressions involving imported, instantiated interface
types. CL 322193 fixed a similar issue for generating wrappers for
imported, instantiated concrete types, but missed this case.
This is necessary to fix CL 326169's test case 10. However, that test
case is not included currently, because -G=3 mode crashes on method
expressions involving *any* instantiated interface type. Adding a test
will have to wait until either this issue is fixed in -G=3 mode, or
unified IR is merged.
Updates #46704.
Change-Id: Ib02d3c20e7c69d16288f1286cd1c98e7cbbba114
Reviewed-on: https://go-review.googlesource.com/c/go/+/327055
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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It was the only h3 in <code>, and it lacked <p> around its content.
It looked like it was part of the prior section:
https://tip.golang.org/doc/go1.17#gofmt
Change-Id: I7e9ef70e9a03474225833f44420aabd70dab3cd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/326774
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Fixes#46691
Change-Id: I3bef9a773be640bed96eb2dc395cb11671a0767a
Reviewed-on: https://go-review.googlesource.com/c/go/+/326869
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
The unified IR importer needs access to the *types2.Checker instance
to lazily construct objects and types. Eventually, maybe the
types2.Importer API can be extended to add the Checker as another
parameter (or more likely something like an ImportConfig struct), but
right now we can handle this ourselves as long as we forgo the
types2.(*Config).Check convenience wrapper.
Updates #46449.
Change-Id: I89c41d5d47c224a58841247cd236cd9f701a23a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/327053
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Unified IR currently works by hoisting local type definitions to
package scope, which requires giving them a unique name. Its current
solution is to directly embed the ·N suffix in Sym.Name, rather than
set Type.Vargen. This CL extends types/fmt.go to support trimming this
suffix again when appropriate.
Longer term, I want to revisit this hack, but this seemed like the
least invasive solution while also handling generics and local types.
Change-Id: If99fcdcc1e19e37d5887de3b021c256a3fe46b98
Reviewed-on: https://go-review.googlesource.com/c/go/+/327052
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The unified IR importer requires a way to set symbol indices for
imported types, so provide an exported API for this.
Change-Id: I2f088628f56d5b9f1097196dc1aa23f0a8b8d496
Reviewed-on: https://go-review.googlesource.com/c/go/+/327050
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This CL adds a variant of ir.TypeNode that allows specifying position
information. This shouldn't normally be needed/used, but it's
occasionally helpful for writing code that passes toolstash -cmp.
Change-Id: I2be5da0339fd1ec2bee01d6c5310bd2ef58c46b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/327049
Trust: Matthew Dempsky <mdempsky@google.com>
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The net/http/internal package contains a PEM-encoded private key used in
tests. This key is initialized at init time, which prevents it from
being stripped by the linker in non-test binaries.
Move the certificate and key to a new net/http/internal/testcert
package to ensure it is only included in binaries that reference it.
Fixes#46677.
Change-Id: Ie98bda529169314cc791063e7ce4d99ef99113c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/326771
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Ideally we should encode the load.PackageInternal data in a way that
doesn't rely on 1:1 correlations of slices, but this is a minimal fix
to unblock Go 1.17.
Fixes#46462
Change-Id: I6e029c69f757aadc54d4be02c01d6b294c217542
Reviewed-on: https://go-review.googlesource.com/c/go/+/326610
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As far as I can tell the Core Library section is complete. Remove its
TODO.
Change-Id: Ia84c6656fac045e25fae1a7ce8b488a3a26fd250
Reviewed-on: https://go-review.googlesource.com/c/go/+/326469
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Reviewed-by: Damien Neil <dneil@google.com>
Explicitly document the handling of a sign prefix, and the interaction
between the sign and base prefixes.
Fixes#46641.
Change-Id: I3cd6773e3f074fe671a944a05a79d2408137fcd4
Reviewed-on: https://go-review.googlesource.com/c/go/+/325875
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Reviewed-by: Rob Pike <r@golang.org>
In 1.17, //go:build lines are fully supported. This entails changes to
the go command, vet, and gofmt. Document all of them.
I'm not Russ, but this is a significant change, it slipped under the
radar, and we're trying to get the release out. So here's what I got.
I wasn't sure where to put the go command change. On the one hand,
it's pretty significant. On the other, it certainly affects fewer
people than lazy loading. So it probably shouldn't be first, but I also
didn't want to bury it the middle of all the other module changes. Open
to suggestions.
Change-Id: Ia1a96bcfb1977973c5b0b0a6b18a9242a745af12
Reviewed-on: https://go-review.googlesource.com/c/go/+/326209
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I'm not aware of anything more to mention for ports.
Change-Id: I686df8a230a55ad7f4c5eae43ca27f85fad9dd84
Reviewed-on: https://go-review.googlesource.com/c/go/+/326409
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Semicolons are no longer valid separators, so
net/url.ParseQuery will now return an error
if any part of the query contains a semicolon.
net/http.(*Request).ParseMultipartForm has been
changed to fall through and continue parsing
even if the call to (*Request).ParseForm fails.
This change also includes a few minor refactors
to existing tests.
Fixes#25192
Change-Id: Iba3f108950fb99b9288e402c41fe71ca3a2ababd
Reviewed-on: https://go-review.googlesource.com/c/go/+/325697
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Reviewed-by: Filippo Valsorda <filippo@golang.org>
The comments in the code refer to Knuth and to Burnikel and Ziegler,
but Knuth's presentation is inscrutable, and our recursive division
code does not bear much resemblance to Burnikel and Ziegler's paper
(which is fine, ours is nicer).
Add a standalone explanation of division instead of referring to
difficult or not-directly-used references.
Change-Id: Ic1b35dc167fb29a69ee00e0b4a768ac9cc9e1324
Reviewed-on: https://go-review.googlesource.com/c/go/+/321078
Trust: Russ Cox <rsc@golang.org>
Trust: Katie Hockman <katie@golang.org>
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Reviewed-by: Filippo Valsorda <filippo@golang.org>
The compiler machinery that generates "map.zero" symbols marks them as
RODATA and DUPOK, which is problematic when a given application has
multiple map zero symbols (from different packages) with varying
sizes: the dupok path in the loader assumes that if two symbols have
the same name, it is safe to pick any of the versions. In the case of
map.zero, the link needs to select the largest symbol, not an
arbitrary sym.
To fix this problem, mark map.zero symbols as content-addressable,
since the loader's content addressability processing path already
supports selection of the larger symbol in cases where there are dups.
Fixes#46653.
Change-Id: Iabd2feef01d448670ba795c7eaddc48c191ea276
Reviewed-on: https://go-review.googlesource.com/c/go/+/326211
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The linker's -strictdups debugging option was not properly checking
for cases where you have two dupok BSS symbols with different length
(the check examined data length and content, but not symbol size).
Updates #46653.
Change-Id: I3844f25ef76dd6e4a84ffd5caed5d19a1b1a57c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/326210
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Now that deferred functions are always argumentless, we don't
need the metadata for the frame size, number of arguments, and
the information about each argument.
Change-Id: I99e75248a22bda6efbdf2012a2f35beca4c18fd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/326061
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Now it is only used to save the deferred the function (closure),
which must be a function type. Simplify the code.
Change-Id: Id4b8f2760fbf39a95883df2327f97378e7edab88
Reviewed-on: https://go-review.googlesource.com/c/go/+/326060
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These vet checks were added in CL 299532 and CL 321389.
Also adds a TODO for buildtags.
Change-Id: I516dc77729f6d2dc147318260fe452831b115dfa
Reviewed-on: https://go-review.googlesource.com/c/go/+/322769
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As deferred function now always has zero arguments, _defer.siz is
always 0 and can be removed.
Change-Id: Ibb89f65b2f9d2ba4aeabe50438cc3d4b6a88320b
Reviewed-on: https://go-review.googlesource.com/c/go/+/325921
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deferproc was not allowed to split stack because it had a special
stack layout, where the go'd function's arguments were passed on
stack but not included in the signature (therefore the stack map).
Now it no longer has argument, so it does not need to be nosplit.
Change-Id: I6d4b5302bd6fea6642bb4202984d86e3ebbc9054
Reviewed-on: https://go-review.googlesource.com/c/go/+/325920
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Previously it takes a *funcval, as it can be any function types.
Now it must be func(). Make it so.
Change-Id: I04273047b024386f55dbbd5fbda4767cbee7ac93
Reviewed-on: https://go-review.googlesource.com/c/go/+/325918
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newproc/deferproc takes a siz argument for the go'd/deferred
function's argument size. Now it is always zero. Remove the
argument.
Change-Id: If1bb8d427e34015ccec0ba10dbccaae96757fa8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/325917
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Re-apply the doc part of CL 324471, originally written by Felix Geisendörfer.
Change-Id: I831bead9a385bc5a5eed3058649a25ef17373bc6
Reviewed-on: https://go-review.googlesource.com/c/go/+/326171
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
This reverts CL 324471 (commit 689f4c7415).
Reason for revert: break ~all builders. And it is not a doc-only change.
Change-Id: Iadbdda34d2ca476a9f5e6c2d3a28592ed7ccb067
Reviewed-on: https://go-review.googlesource.com/c/go/+/326170
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In both net.ParseIP and net.ParseCIDR reject leading zeros in the
dot-decimal notation of IPv4 addresses.
Fixes#30999Fixes#43389
Change-Id: I2b6a31fe84db89ac828cf5ed03eaa586ee96ab68
Reviewed-on: https://go-review.googlesource.com/c/go/+/325829
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
