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48274 Commits

Author SHA1 Message Date
Ian Lance Taylor
3075ffc93e os: deflake TestFdReadRace
The test would hang if the call to Fd set the pipe to be non-blocking
before the Read entered the first read system call. Avoid that problem
by writing data to the pipe to wake up the read.

For #24481
Fixes #44818

Change-Id: I0b798874c7b81e7308a38ebbf657efc4392ffacd
Reviewed-on: https://go-review.googlesource.com/c/go/+/322893
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2021-05-26 23:33:38 +00:00
Cherry Mui
4bb927f82e [dev.typeparams] cmd/compile: define ARM64 parameter registers
Define the registers.

They are not really enabled for now. Otherwise the compiler will
start using them for go:registerparams functions and it is not
fully working. Some test will fail.

Now we can compile a simple Add function with registerparams
(with registers enabled).

Change-Id: Ifdfac931052c0196096a1dd8b0687b5fdedb14d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/322850
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-05-26 23:28:56 +00:00
Cherry Mui
cf23daeda3 [dev.typeparams] cmd/compile: do not schedule in-register args late, even for block control
In the scheduler we have the logic that if a Value is used as the
block's control, we schedule it at the end, except for Phis and
Args. Even the comment says so, the code doesn't exclude
in-register Args (OpArgXXXReg).

Change to check for score instead, which includes OpArgXXXRegs.
It also includes GetClosurePtr, which must be scheduled early.
We just happen to never use it as block control.

Found when working on ARM64 register ABI. In theory this could
apply to AMD64 as well. But on AMD64 we never use in-register
Value as block control, as conditional branch is always based on
FLAGS, never based on registers, so it doesn't actually cause any
problem.

Change-Id: I167a550309772639574f7468caf91bd805eb74c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/322849
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
2021-05-26 23:26:51 +00:00
Damien Neil
a62c08734f src/os: revert accidentally submitted change
Change-Id: Ib34984a6bd0abc76266e8aac96f9f8ad8ae21d17
Reviewed-on: https://go-review.googlesource.com/c/go/+/322894
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 22:54:09 +00:00
Damien Neil
1d5298d46a doc/go1.17: document net/... changes
For #44513.
Fixes #46014.
Fixes #46015.
Fixes #46016.
Fixes #46017.

Change-Id: I356483d68d07159281dfe2ea1e49430ddf200973
Reviewed-on: https://go-review.googlesource.com/c/go/+/322891
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 22:43:54 +00:00
Damien Neil
0fbecece98 doc/go1.17: document syscall changes
Fixes #46023

Change-Id: Ia63829d03afb0936862b16f0971175cbaa1095bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/322890
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 22:41:55 +00:00
Damien Neil
02beecb397 mime: document use of the Shared MIME-Info Database
For #44513.
Fixes #46013.

Change-Id: I382603208aa94b66d5220cf0f418b8528a4e4148
Reviewed-on: https://go-review.googlesource.com/c/go/+/322892
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 22:41:35 +00:00
Dan Scales
4ed6317e73 [dev.typeparams] cmd/compile: always generate (*T).M wrappers for instantiated methods
Always generate (*T).M wrappers for instantiated methods, even when the
instantiated method is being generated for another package (its source
package)

Added new function t.IsInstantiated() to check for fully-instantiated
types (generic type instantiated with concrete types, hence concrete
themselves). This function helps hide the representation of instantiated
types outside of the types package.

Added new export/import test setsimp.go that needs this change.

Change-Id: Ifb700db8c9494e1684c93735edb20f4709be5f7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/322193
Trust: Dan Scales <danscales@google.com>
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 21:39:54 +00:00
Dan Scales
b7f7d1cd7b [dev.typeparams] cmd/compile: get type aliases working with generic types
Generic types can the source type of a type alias, so modify g.typ0() to
be able to deal with base generic types.

Added test aliasimp.go that tests aliasing of local generic types and
imported generic types.

Change-Id: I1c398193819d47a36b014cc1f9bb55107e9a565b
Reviewed-on: https://go-review.googlesource.com/c/go/+/322194
Trust: Dan Scales <danscales@google.com>
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 21:38:54 +00:00
Matthew Dempsky
95748d1b74 [dev.typeparams] cmd/compile: avoid some redundant type construction
This CL updates noder and typecheck to avoid a couple of instances of
redundant evaluation of type expressions:

1. When noding struct fields or parameter tuples, check for
syntax.Type reuse between adjacent fields and then reuse the
corresponding ir.Node type expression. It would perhaps be even better
to avoid re-noding the type expression too, but noder's days are
numbered anyway, so I'd rather be minimally invasive here.

2. When importing an empty interface, reuse the same cached empty
interface instance that is used for empty interfaces that appear in
source. This matches types2's behavior, which uses a single
types2.Interface instance for all empty interfaces.

These changes are motivated by making it possible to migrate from
typecheck to types2 while passing toolstash -cmp.

Updates #46208.

Change-Id: Ia6458894494464d863181db356f3284630c90ffe
Reviewed-on: https://go-review.googlesource.com/c/go/+/320789
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 19:58:01 +00:00
Cherry Mui
a92460fd2f doc/go1.17: add release notes for runtime/metrics package
Updates #44513.

Change-Id: I571a791e9c76371be3b3f1a323f1ea8ff485cf0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/322857
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-05-26 18:33:56 +00:00
Cherry Mui
55aefbb268 doc/go1.17: mention enabling frame pointer on all ARM64
Updates #44513.

Change-Id: I43e95de0423779b3311d96c56f7c8c1cc5be27b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/321311
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
2021-05-26 18:32:27 +00:00
Rob Findley
39da9ae513 go/types: ensure that Named.check is nilled out once it is expanded
To support lazy expansion of defined types, *Named holds on to a
*Checker field, which can pin the *Checker in memory. This can have
meaningful memory implications for applications that keep type
information around.

Ensure that the Checker field is nilled out for any Named types that are
instantiated during the type checking pass, by deferring a clean up to
'later' boundaries.

In testing this almost exactly offset the ~6% memory footprint increase
I observed with 1.17.

Fixes #45580

Change-Id: I8aa5bb777573a924afe36e79fa65f8729336bceb
Reviewed-on: https://go-review.googlesource.com/c/go/+/318849
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 18:24:48 +00:00
tyltr
bfd7798a6c runtime,cmd/link/internal/ld: fix typos
Change-Id: I558590cef7e2311aadbdcb4088033e350d3aae32
GitHub-Last-Rev: 513944a623
GitHub-Pull-Request: golang/go#46389
Reviewed-on: https://go-review.googlesource.com/c/go/+/322809
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 16:11:00 +00:00
Dan Scales
fd54ae8b0c [dev.typeparams] cmd/compile: adding union support in types1
Add union support in types1, and allow exporting of unions, and
importing unions back into types1 and types2.

Added new test mincheck.go/mincheck.dir that tests that type lists (type
sets) are correctly exported/imported, so that types2 gives correct
errors that an instantiation doesn't fit the type list in the type param
constraint.

Change-Id: I8041c6c79289c870a95ed5a1b10e4c1c16985b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/322609
Trust: Dan Scales <danscales@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 15:33:02 +00:00
Russ Cox
e4615ad74d math/big: move division into natdiv.go
Code moved and functions reordered to be in a consistent
top-down dependency order, but otherwise unchanged.

First step toward commenting division algorithms.

Change-Id: Ib5e604fb5b2867edff3a228ba4e57b5cb32c4137
Reviewed-on: https://go-review.googlesource.com/c/go/+/321077
Trust: Russ Cox <rsc@golang.org>
Trust: Katie Hockman <katie@golang.org>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-26 13:25:43 +00:00
Tobias Klauser
d050238bb6 doc/go1.17: fix formatting for time changes
Also add a link to the time.Time type and adjust the wording a bit.

Change-Id: I2f4210ada6d253eb5804e6327b2432487beb8a05
Reviewed-on: https://go-review.googlesource.com/c/go/+/321811
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-26 05:45:56 +00:00
Roland Shoemaker
74242baa41 archive/zip: only preallocate File slice if reasonably sized
Since the number of files in the EOCD record isn't validated, it isn't
safe to preallocate Reader.Files using that field. A malformed archive
can indicate it contains up to 1 << 128 - 1 files. We can still safely
preallocate the slice by checking if the specified number of files in
the archive is reasonable, given the size of the archive.

Thanks to the OSS-Fuzz project for discovering this issue and to
Emmanuel Odeke for reporting it.

Fixes #46242
Fixes CVE-2021-33196

Change-Id: I3c76d8eec178468b380d87fdb4a3f2cb06f0ee76
Reviewed-on: https://go-review.googlesource.com/c/go/+/318909
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Trust: Joe Tsai <thebrokentoaster@gmail.com>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2021-05-25 23:41:42 +00:00
Matthew Dempsky
6c9e1c58bc [dev.typeparams] test: fix and update run.go's generics testing
In a late change to golang.org/cl/320609, while going back and forth
on the meaning of the boolean result value for "checkFlags", I got one
of the cases wrong. As a result, rather than testing both default
flags and -G=3, we were (redundanly) testing default flags and -G=0.

I ran into this because in my local dev tree, I'm using types2 even
for -G=0, and evidently one of the recent types2 CLs changed the error
message in fixedbugs/issue10975.go. Fortunately, there haven't been
any other regressions despite lacking test coverage.

So this CL cleans things up a bit:

1. Fixes that test to use -lang=go1.17, so types2 reports the old
error message again.

2. Renames "checkFlags" to "validForGLevel" so the boolean result is
harder to get wrong.

3. Removes the blanket deny list of all -m tests, and instead adds the
specific tests that are still failing. This effectively extends -G=3
coverage to another 27 tests that were using -m but already passing,
so we can make sure they don't regress again.

4. Adds a -f flag to force running tests even if they're in the deny
list, to make it easier to test whether they're still failing without
having to edit run.go.

Change-Id: I058d9d90d81a92189e54c6f591d95fb617fede53
Reviewed-on: https://go-review.googlesource.com/c/go/+/322612
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-05-25 23:31:05 +00:00
Matthew Dempsky
5c1e119d48 [dev.typeparams] all: merge master (f22ec51) into dev.typeparams
Merge List:

+ 2021-05-25 f22ec51deb doc: add Go 1.17 release note about inlining functions with closures
+ 2021-05-25 8b462d7567 cmd/go: add a -compat flag to 'go mod tidy'
+ 2021-05-24 c89f1224a5 net: verify results from Lookup* are valid domain names
+ 2021-05-24 08a8fa9c47 misc/wasm: ensure correct stack pointer in catch clauses
+ 2021-05-24 32b73ae180 cmd/go: align checks of module path during initialization.
+ 2021-05-24 15d9d4a009 cmd/go: add tests illustrating what happens when Go 1.16 is used in a Go 1.17 main module
+ 2021-05-24 873401df5b cmd/compile: ensure equal functions don't do unaligned loads
+ 2021-05-24 b83610699a cmd/compile: record regabi status in DW_AT_producer
+ 2021-05-24 a22e317220 cmd/compile: always include underlying type for map types
+ 2021-05-24 4356e7e85f runtime: account for spill slots in Windows callback compilation
+ 2021-05-24 52d7033ff6 cmd/go/internal/modload: set the default GoVersion in a single location
+ 2021-05-24 05819bc104 cmd/go/internal/modcmd: factor out a type for flags whose arguments are Go versions
+ 2021-05-22 cca23a7373 cmd/compile: revert CL/316890
+ 2021-05-21 f87194cbd7 doc/go1.17: document changes to net/http package
+ 2021-05-21 217f5dd496 doc: document additional atomic.Value methods
+ 2021-05-21 3c656445f1 cmd/go: in TestScript/mod_replace, download an explicit module path
+ 2021-05-21 76b2d6afed os: document that StartProcess puts files into blocking mode
+ 2021-05-21 e4d7525c3e cmd/dist: display first class port status in json output
+ 2021-05-21 4fb10b2118 cmd/go: in 'go mod download' without args, don't save module zip sums
+ 2021-05-21 4fda54ce3f doc/go1.17: document database/sql changes for Go 1.17
+ 2021-05-21 8876b9bd6a doc/go1.17: document io/fs changes for Go 1.17
+ 2021-05-21 5fee772c87 doc/go1.17: document archive/zip changes for Go 1.17
+ 2021-05-21 3148694f60 cmd/go: remove warning from module deprecation notice printing
+ 2021-05-21 7e63c8b765 runtime: wait for Go runtime to initialize in Windows signal test
+ 2021-05-21 831573cd21 io/fs: added an example for io/fs.WalkDir
+ 2021-05-20 baa934d26d cmd: go get golang.org/x/tools/analysis@49064d23 && go mod vendor
+ 2021-05-20 7c692cc7ea doc/go1.17: document changes to os package
+ 2021-05-20 ce9a3b79d5 crypto/x509: add new FreeBSD 12.2+ trusted certificate folder
+ 2021-05-20 f8be906d74 test: re-enable test on riscv64 now that it supports external linking
+ 2021-05-20 def5360541 doc/go1.17: add release notes for OpenBSD ports
+ 2021-05-20 ef1f52cc38 doc/go1.17: add release note for windows/arm64 port
+ 2021-05-20 bb7495a46d doc/go1.17: document new math constants
+ 2021-05-20 f07e4dae3c syscall: document NewCallback and NewCallbackCDecl limitations
+ 2021-05-20 a8d85918b6 misc/cgo/testplugin: skip TestIssue25756pie on darwin/arm64 builder
+ 2021-05-19 6c1c055d1e cmd/internal/moddeps: use filepath.SkipDir only on directories
+ 2021-05-19 658b5e66ec net: return nil UDPAddr from ReadFromUDP
+ 2021-05-19 15a374d5c1 test: check portable error message on issue46234.go
+ 2021-05-18 eeadce2d87 go/build/constraint: fix parsing of "// +build" (with no args)
+ 2021-05-18 6d2ef2ef2a cmd/compile: don't emit inltree for closure within body of inlined func
+ 2021-05-18 048cb4ceee crypto/x509: remove duplicate import

Change-Id: Ib0442e3555493805f2aa1df26dfd6898df989a37
2021-05-25 15:37:20 -07:00
Dan Scales
f22ec51deb doc: add Go 1.17 release note about inlining functions with closures
Fixes #45781

Change-Id: Ia5bc2845f7f94aff4f3f0ff15533feb148223adb
Reviewed-on: https://go-review.googlesource.com/c/go/+/322089
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-05-25 19:03:32 +00:00
Bryan C. Mills
8b462d7567 cmd/go: add a -compat flag to 'go mod tidy'
Fixes #46141

Change-Id: I9d4032e75252ade9eaa937389ea97ef3fb287499
Reviewed-on: https://go-review.googlesource.com/c/go/+/321071
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-05-25 13:18:26 +00:00
Robert Griesemer
155dc0e541 [dev.typeparams] cmd/compile/internal/types2: factor out constraint satisfaction check
This is a simple move of a block of inlined code into a function
to make instantiation more manageable and easier to understand.
There is no change in functionality or behavior.

Change-Id: I46e7a9ea03527731e1f0219b3402eb03949627c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/322070
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-05-24 23:16:24 +00:00
Robert Griesemer
5770d7a637 [dev.typeparams] cmd/compile/internal/types2: accept embedded interface elements
Accept embedded interface elements of the form ~T or A|B and
treat them like type lists: for now the elements of a union
cannot be interfaces. Also, translate existing style "type"-
lists in interfaces into interface elements: "type a, b, c"
becomes a union element "~a|~b|~c" which in turn is handled
internally like a type list.

For now, "~" is still ignored and type lists are mapped to
Sum types as before, thus ensuring that all existing tests
work as before (with some minor adjustments).

Introduced a new Union type to represent union elements.
For now they don't make it past interface completion where
they are represented as a Sum type. Thus, except for printing
(and the respective tests) and substitution for interfaces,
the various type switches ignore Union types. In a next step,
we'll replace Sum types with union types and then consider
the ~ functionality as well.

Because union elements are no different from embedded interfaces
we don't need a separate Interface.types field anymore. Removed.

For #45346.

Change-Id: I98ac3286aea9d706e98aee80241d4712ed99af08
Reviewed-on: https://go-review.googlesource.com/c/go/+/321689
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-05-24 23:16:07 +00:00
Robert Griesemer
cc7ceea585 [dev.typeparams] cmd/compile/internal/types2: simplify Interface accessors
Change-Id: Ia97cf88d94de044d61ce2bd364a858bd608c050a
Reviewed-on: https://go-review.googlesource.com/c/go/+/321850
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-05-24 23:16:00 +00:00
Robert Griesemer
1608577e05 [dev.typeparams] cmd/compile/internal/types2: re-use existing code for Interface.Complete
Change-Id: I0fa07e49651aa086c2edbd1162332608c400250f
Reviewed-on: https://go-review.googlesource.com/c/go/+/321751
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-05-24 23:15:35 +00:00
Roland Shoemaker
c89f1224a5 net: verify results from Lookup* are valid domain names
For the methods LookupCNAME, LookupSRV, LookupMX, LookupNS, and
LookupAddr check that the returned domain names are in fact valid DNS
names using the existing isDomainName function.

Thanks to Philipp Jeitner and Haya Shulman from Fraunhofer SIT for
reporting this issue.

Fixes #46241
Fixes CVE-2021-33195

Change-Id: Icf231acd93178a3b6aec3f178cff7e693f74ef8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/320949
Trust: Roland Shoemaker <roland@golang.org>
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
2021-05-24 22:27:31 +00:00
Dan Scales
d48f6d9f6f [dev.typeparams] Don't check typecheck(3) on transform, so no need to export/import it
We have a value typecheck(3) that indicates that a node in a generic
function still needs transformation (via the functions in transform.go).
But it is not very desirable to export/import the value of typecheck(3).
So, I changed the stenciling code to just try to transform all relevant
node types during node copy. Almost all tranform functions were already
idempotent. I only had to add an extra if check before calling
transformAssign() in the OAS case. We still use the typecheck(3) in
noder to determine when higher-nodes have to delay transformation
because one or more of their args are delaying transformation.

Added new test mapsimp.go that required these tranformations after import.

As an additional change, export/import of OINDEX requires exporting the
type using w.exoticType() rather than w.typ(), in order to handle
generic functions. Since generic functions can have pre-transform
operations, the index operation can have a tuple type (multiple return
from a map lookup).

Added printing of imported function bodies in -W=3 debug mode.

Change-Id: I220e2428dc5f2741e91db146f075eb5b6045f451
Reviewed-on: https://go-review.googlesource.com/c/go/+/322191
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-05-24 22:17:33 +00:00
Dan Scales
4c50721cda [dev.typeparams] cmd/compile: Fix handling of Name nodes during stenciling
The name substitution for stenciling was incorrectly handling non-local
names. Made changes to explicitly built the vars[] name substitution map
based on the local variables (similar to what inlining substitution
does). Then, we we are stenciling a name node, we do NOT make a copy of
the name node if it is not in vars[], since it is then a reference to an
external name. Added new function localvar() to create the new nodes for
the local variables and put them in the vars[] map.

New test listimp2.go, added missing test calls in list2.go

Change-Id: I8946478250c7bf2bd31c3247089bd50cfeeda0fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/322190
Trust: Dan Scales <danscales@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-05-24 22:16:09 +00:00
Richard Musiol
08a8fa9c47 misc/wasm: ensure correct stack pointer in catch clauses
The stack pointer may have changed after a call from JavaScript into Go
code because of stack growth. The normal case already updated the
sp variable accordingly, but the catch case did not yet.

Fixes #45433

Change-Id: I3e0a33381929626f6b21902948935eb5ffb26c96
Reviewed-on: https://go-review.googlesource.com/c/go/+/321936
Trust: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-05-24 22:12:19 +00:00
Cherry Mui
dcaf785add [dev.typeparams] internal/buildcfg: enable defer/go wrapping everywhere
For register ABI, we wrap deferred/go'd function with arguments
or results in an argumentless closure, so the runtime can call the
function without knowing how to marshal the arguments, or
reserving frame for arguments and results.

The wrapping mechanism works everywhere, regardless of whether the
register ABI is used. And wrapping will simplify the compiler and
runtime's implementation for defer and go calls. For example, the
compiler will not need to marshal arguments for defer/go calls,
the opendefer metadata will not need to contain argument
information, and _defer record will be fixed-sized.

Enable wrapping everywhere.

Change-Id: I2032ba87249ceb686310dc640fb00696669ae912
Reviewed-on: https://go-review.googlesource.com/c/go/+/321958
Trust: Cherry Mui <cherryyz@google.com>
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2021-05-24 22:07:39 +00:00
Cherry Mui
f642742678 [dev.typeparams] reflect: use internal/abi.FuncPCABI0 to take address of assembly functions
makeFuncStub and methodValueCall on AMD64 are marked as
ABIInternal, so Go code can get their (unwrapped) addresses
(using open-coded funcPC). Ues internal/abi.FuncPCABI0 instead,
and un-mark the functions.

Change-Id: Id28b6101ec7e55bc5a357d4236482cec70cd7e5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/322350
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-05-24 21:05:34 +00:00
Cherry Mui
e0844acfc8 [dev.typeparams] runtime/pprof: replace funcPC with internal/abi.FuncPCABIInternal
All funcPC references are ABIInternal functions. Replace with the
intrinsics.

Change-Id: I2266bb6d2b713eb63b6a09846e9f9c423cab6e9b
Reviewed-on: https://go-review.googlesource.com/c/go/+/322349
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-05-24 21:05:06 +00:00
Constantin Konstantinidis
32b73ae180 cmd/go: align checks of module path during initialization.
Fixes #45025.

Change-Id: I70c2b745f764484e4b3a2824adc470f168fb2c50
Reviewed-on: https://go-review.googlesource.com/c/go/+/320310
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
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2021-05-24 20:57:01 +00:00
Bryan C. Mills
15d9d4a009 cmd/go: add tests illustrating what happens when Go 1.16 is used in a Go 1.17 main module
For #46141
Updates #46160

Change-Id: Ib22435b8051aaf3fa74d43d3b7f2d091e67f05e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/320172
Trust: Bryan C. Mills <bcmills@google.com>
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2021-05-24 20:15:56 +00:00
Keith Randall
873401df5b cmd/compile: ensure equal functions don't do unaligned loads
On architectures which don't support unaligned loads, make sure we
don't generate code that requires them.

Generated hash functions also matter in this respect, but they all look ok.

Update #37716
Fixes #46283

Change-Id: I6197fdfe04da4428092c99bd871d93738789e16b
Reviewed-on: https://go-review.googlesource.com/c/go/+/322151
Trust: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: eric fang <eric.fang@arm.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-05-24 19:06:05 +00:00
Alessandro Arzilli
b83610699a cmd/compile: record regabi status in DW_AT_producer
Records if regabi was enabled during compilation in the DW_AT_producer
attribute of each compile unit.
This is useful to debuggers that support the debugCall protocol.

Change-Id: I5ad2c48ebf126aeb8bfb459b53a1a5304550036a
Reviewed-on: https://go-review.googlesource.com/c/go/+/318050
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
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2021-05-24 18:10:39 +00:00
Keith Randall
a22e317220 cmd/compile: always include underlying type for map types
This is a different fix for #37716.

Should help make the fix for #46283 easier, since we will no longer
need to keep compiler-generated hash functions and the runtime
hash function in sync.

Change-Id: I84cb93144e425dcd03afc552b5fbd0f2d2cc6d39
Reviewed-on: https://go-review.googlesource.com/c/go/+/322150
Trust: Keith Randall <khr@golang.org>
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2021-05-24 17:43:50 +00:00
Cherry Mui
ae26b45113 [dev.typeparams] cmd/compile/abi-internal.md: specify ARM64 register-based ABI
The ABI is similar to the AMD64 ABI, just uses different
registers and stack layout. The stack layout is compatible with
the current stack-based ABI0.

To be implemented in Go 1.18.

Change-Id: If9c5e664574947f959d3427e3bed769e05d2d673
Reviewed-on: https://go-review.googlesource.com/c/go/+/319829
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-05-24 17:40:13 +00:00
Michael Anthony Knyszek
4356e7e85f runtime: account for spill slots in Windows callback compilation
The Go ABI, as it stands, requires spill space to be reserved for
register arguments. syscall.NewCallback (because of compileCallback)
does not actually reserve this space, leading to issues if the Go code
it invokes actually makes use of it.

Fixes #46301.

Change-Id: Idbc3578accaaaa29e4ba32291ef08d464da0b7b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/322029
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Egon Elbre <egonelbre@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-05-24 16:47:51 +00:00
Dan Scales
b18b2d372e [dev.typeparams] cmd/compile: fix case where we were copying a raw Node
Replace the raw Node copy with the creation of a new node, and the
copying of the needed flags and fields.

Change-Id: I636bf228ba28c0d5dc25f8366d82379d86ecd731
Reviewed-on: https://go-review.googlesource.com/c/go/+/322189
Run-TryBot: Dan Scales <danscales@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Trust: Dan Scales <danscales@google.com>
2021-05-24 16:01:17 +00:00
Bryan C. Mills
52d7033ff6 cmd/go/internal/modload: set the default GoVersion in a single location
For #46141
Updates #36460

Change-Id: Ie4c13c73a451650d1e8abb8e5cebfc30d0a71a70
Reviewed-on: https://go-review.googlesource.com/c/go/+/321070
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-05-24 15:03:18 +00:00
Bryan C. Mills
05819bc104 cmd/go/internal/modcmd: factor out a type for flags whose arguments are Go versions
For #46141
Updates #45094

Change-Id: I6553600c69273762a81795ef021c66f4e0872b6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/321069
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-05-24 15:03:10 +00:00
Than McIntosh
cca23a7373 cmd/compile: revert CL/316890
This is a revert of https://go-review.googlesource.com/c/go/+/316890,
which has positive effects on debugging + DWARF variable locations
for register parameters when the reg abi is in effect, but also
turns out to interact badly with the register allocator.

Fixes #46304.

Change-Id: I624bd980493411a9cde45d44fcd3c46cad796909
Reviewed-on: https://go-review.googlesource.com/c/go/+/321830
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-05-22 00:51:17 +00:00
ian woolf
f87194cbd7 doc/go1.17: document changes to net/http package
Changes include:
* ReadRequest function now returns an error when a request has multiple
  Host headers.

For #44513.
Updates #46015.

Change-Id: I48ea7c5cee3f1d1a247035fd37191362a53d1f04
Reviewed-on: https://go-review.googlesource.com/c/go/+/317914
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Heschi Kreinick <heschi@google.com>
2021-05-21 23:46:07 +00:00
Dan Scales
5b1120fac7 [dev.typeparams] cmd/compile: fix handling of Nname field in (*subster).tstruct.
We want to keep the Nname references for external function references in
tstruct (not remove them, as is currently happening). We only change the
Nname reference (translate it) when it appears in subst.vars[].

New export/import test sliceimp.go which includes some of these external
function references.

Change-Id: Ie3d73bd989a16082f0cebfb566e0a7faeda55e60
Reviewed-on: https://go-review.googlesource.com/c/go/+/321735
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-05-21 23:25:07 +00:00
Dan Scales
8d2b4cb6cc [dev.typeparams] cmd/compile: fixing import of comm clauses/closures in generic functions
Improvements:
 - Fix export/import of the default case of a select statement (was not
   dealing with nil Comm case)
 - Set properly the name of closure functions in imported generic
   functions

Added new test exporting/importing a reasonably large channel package,
chansimp.go.

Change-Id: If2ee12bd749e5df415f48ec4b629a2fa68a79dcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/321734
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-05-21 23:13:46 +00:00
Cherry Mui
626e89c261 [dev.typeparams] runtime: replace funcPC with internal/abi.FuncPCABIInternal
At this point all funcPC references are ABIInternal functions.
Replace with the intrinsics.

Change-Id: I3ba7e485c83017408749b53f92877d3727a75e27
Reviewed-on: https://go-review.googlesource.com/c/go/+/321954
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-05-21 22:40:36 +00:00
Keith Randall
217f5dd496 doc: document additional atomic.Value methods
For #44513. Fixes #46022.

Change-Id: Id1d87fbd4034461953760ce77201f87ed723ff88
Reviewed-on: https://go-review.googlesource.com/c/go/+/319549
Trust: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-21 22:39:16 +00:00
Cherry Mui
6a81e063dd [dev.typeparams] runtime: fix misuse of funcPC
funcPC expects a func value. There are places where we pass an
unsafe.Pointer, which is technically undefined.

In proc.go it is actually representing a func value, so the
expression does the right thing. Cast to a func value so it is
clearer.

In os_freebsd.go it is a raw function pointer. Using funcPC on a
raw function pointer is incorrect. Just use it directly instead.

Change-Id: I3c5d61cea08f0abf5737834b520f9f1b583c1d34
Reviewed-on: https://go-review.googlesource.com/c/go/+/321953
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-05-21 22:12:18 +00:00