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Commit Graph

47826 Commits

Author SHA1 Message Date
Rob Findley
614a9c2613 go/types: simplify Checker.funcInst
This is a port of CL 306169 to go/types, adjusted only for use of the
typeparams package, and the different positioning API.

Change-Id: I3095f4b0dae4473e75ec2a988ea282bac1a4bab3
Reviewed-on: https://go-review.googlesource.com/c/go/+/312189
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 20:36:36 +00:00
Rob Findley
39785912b9 go/types: add sizeof test
This is a direct port of CL 310530 to go/types, adjusted only for names
and to account for the smaller size of objects in go/types, due to
(I assume) token.Pos vs syntax.Pos.

Change-Id: I0cc34d56e41c1e66b17edd0ccd3f281d97a6b235
Reviewed-on: https://go-review.googlesource.com/c/go/+/312091
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 20:35:43 +00:00
Keith Randall
255056395e test: add a field tracking test
Now that we can set experiments at build time instead of make.bash time,
we can actually write a test for field tracking!

Update #20014

This CL contains a test for the functionality fixed in CL 312069.

Change-Id: I7569a7057bbc7c88ae25ae7bf974b0c8a4e35be8
Reviewed-on: https://go-review.googlesource.com/c/go/+/312217
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 20:24:34 +00:00
Ian Lance Taylor
35806efda2 io/fs: document that caller can modify slice returned by ReadFile
Also add a test to testing/fstest.

Fixes #45186

Change-Id: I00e5f46ccd5269dbc266a8f2ebc9a62ebb1297b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/311649
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2021-04-21 16:46:52 +00:00
Robert Griesemer
b8a359d984 cmd/compile/internal/types2: fix incorrect result type of Checker.index
While at it, add missing "invalid argument: " prefix
to a couple of local error messages, for consistency.

For #45667.

Change-Id: I814800b2f3f3750583e335c98a3f8e27030a9daa
Reviewed-on: https://go-review.googlesource.com/c/go/+/312309
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
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2021-04-21 16:26:01 +00:00
Tobias Klauser
f9e2dbbfc9 syscall: use libc in Exec on openbsd/arm64
Like on openbsd/amd64, use libc instead of direct syscalls on
openbsd/arm64.

This was likely missed in CL 286815. A similar change was done for
openbsd/amd64 in CL 270380.

Updates #36435

Change-Id: Ie496a6130f1a43d30974502777db12217e65c551
Reviewed-on: https://go-review.googlesource.com/c/go/+/312229
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
2021-04-21 15:57:05 +00:00
Cherry Zhang
e5bc4f2a77 cmd/compile: reenable name preservation on copies in expand_calls
This reverts CL 311829, and reenables CL 309330. The issue
should be fixed in the previous CL.

Change-Id: I69db0565c72470a1814f135d8f8ec62c781bfc5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/312094
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-21 14:16:01 +00:00
Cherry Zhang
daee726a0b cmd/compile: don't accumulate duplicated named slots
Currently, in expand_calls, for each appearance of a named
variables's component, we add the named slot to f.Names list. If
a variable appears many times, we add it to f.Names many times.
Furthure, for each duplicated named slot, its entry in
f.NamedValues is a slice that contains all Values associated with
that name. This leads to quadratic behavior when iterating named
values like

	for _, name := range f.Names {
		for _, v := range f.NamedValues[name] {
			...
		}
	}

This CL makes it not to add duplicated entries to f.Names.

Change-Id: I82a8d009db81ecf48b4577e0bca501feff677cdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/312093
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-21 14:15:55 +00:00
Michael Pratt
4d56576ec0 runtime: move timer recheck after GC recheck
When rechecking for work after transitioning from a spinning to
non-spinning M, checking timers before GC isn't useful. That is, if
there is GC work available, it will run immediately and the updated
pollUntil is unused.

Move this check to just before netpoll, where pollUntil is used. While
this technically improves efficiency in the (rare) case that we find
GC work in this block, the primary motivation is simply to improve
clarity by moving the update closer to use.

For #43997

Change-Id: Ibc7fb308ac4a582875c200659c9e272121a89f3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/308654
Trust: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-21 13:38:59 +00:00
Bryan C. Mills
381252f312 cmd/go/internal/modload: use updateRequirements instead of editRequirements to add modules for missing packages
editRequirements does a lot of work in order to respect the upper
bounds of mustSelect, and as a result it doesn't provide many promises
about conserving other things (like root dependencies).

When we add modules for missing packages, we aren't dealing with upper
bounds at all, so we would rather avoid the upper-bound overhead and
preserve the root-dependency invariants instead.
(*loader).updateRequirements does exactly that; it just needs to be
told about the additional dependencies to add.

For #36460

Change-Id: Ie0f2bc0dde18026bbd23e51357bb1d725d201680
Reviewed-on: https://go-review.googlesource.com/c/go/+/310791
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 13:27:17 +00:00
Cuong Manh Le
5f1df260a9 cmd/compile: allow export/import OSLICE2ARRPTR
Updates #395
Fixes #45665

Change-Id: Iaf053c0439a573e9193d40942fbdb22ac3b4d3bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/312070
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2021-04-21 09:07:09 +00:00
Cuong Manh Le
7735ec96c1 cmd/compile: remove ir.OSTMTEXPR op
It is not used anywhere.

Change-Id: I2b8d64902e16893ab5e1b84943f6d865c6e9c7bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/311950
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 09:07:02 +00:00
Cuong Manh Le
acf1b46de5 cmd/compile: update ir.Node ops comments
After Russquake, all the Node ops now have different structure, update
comment to reflect that.

Change-Id: I43f859783cda457528ae4d2da9857f2cc0438b62
Reviewed-on: https://go-review.googlesource.com/c/go/+/311949
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2021-04-21 08:46:51 +00:00
Bryan C. Mills
f53c2fac46 cmd/go/internal/modload: in newRequirements, verify that rootModules is sorted
The comment for the Requirements.rootModules field requires that it be
"sorted and capped to length". I noticed that we were not capping it
correctly — we were capping the local variable (the rorotModules
argument itself) but not the struct field. That prompted me to
question whether we were also at some point failing to sort it
correctly, so I decided to add an explicit check.

With the explicit check, all tests continue to pass.

For #36460

Change-Id: I6687de8ef8ecc5129fa8810d678e5673752fd27b
Reviewed-on: https://go-review.googlesource.com/c/go/+/310790
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>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-21 04:27:01 +00:00
Bryan C. Mills
69c94ad55f cmd/go/internal/modload: split updateRoots into separate functions for updating and tidying
In CL 293689, I fused the mvs.Reqs calls that were formerly in MinReqs
and TidyBuildList into a single function, updateRoots, in the hope
that it expressed a fundamental operation. As I have been working on
the lazy equivalents, I have come to realize that these functions are
deeply related but fundamentally different.

In order to help me reason about the two different roles, I am making
the two functions separate once more, but leaving them colocated in
the code.

For #36460

Change-Id: I851d6d81fbfd84f39411e0d076ee72a9909c60ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/310629
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>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 04:26:11 +00:00
Bryan C. Mills
81fcb18df5 cmd/go: make Tidy an option in PackageOpts rather than a separate call
This eliminates some awkwardly-stateful outside calls to
modload.{Disallow,Allow,}WriteGoMod.

Perhaps more importantly, it gives the loader the opportunity to
reload packages and revise dependencies after the tidied requirements
are computed. With lazy loading, dropping an irrelevant requirement
from the main module's go.mod file may (rarely) cause other test
dependencies for packages outside the main module to become
unresolved, which may require the loader to re-resolve those
dependencies, which may in turn add new roots and increase the
selected versions of modules providing other packages.

This refactoring allows the loader to iterate between tidying the
build list and reloading packages as needed, making the exact
sequencing of loading and tidying an implementation detail of the
modload package.

For #36460
For #40775

Change-Id: Ib6da3672f32153d5bd7d653d85e3672ab96cbe36
Reviewed-on: https://go-review.googlesource.com/c/go/+/310181
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>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 04:23:52 +00:00
Ian Lance Taylor
c33ced6d8a runtime: don't test sig.inuse in sigsend
Signals can be delivered on a different thread. There is no necessary
happens-before relationship between setting sig.inuse in signal_enable
and checking it in sigsend. It is theoretically possible, if unlikely,
that sig.inuse is set by thread 1, thread 2 receives a signal, does not
see that sig.inuse is set, and discards the signal. This could happen
if the signal is received immediately after the first call to signal_enable.

For #33174

Change-Id: Idb0f1c77847b7d4d418bd139e801c0c4460531d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/312131
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-04-21 02:39:25 +00:00
Robert Griesemer
190cb937f7 cmd/compile/internal/types2: fix type inference
Don't let type parameters that are not filled in with concrete
type arguments escape from constraint type inference - such
inferred types are not "real".

While at it, implement a tparamsList.String method for debugging.

Fixes #45548.

Change-Id: I40f13ff7af08d0357a5c66234bfcdd0b7ed5fdd6
Reviewed-on: https://go-review.googlesource.com/c/go/+/311651
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-21 01:45:15 +00:00
Josh Bleecher Snyder
760d3b2a16 reflect: allow conversion from slice to array ptr
Note that this removes an invariant:

v.Type().ConvertibleTo(t) might return true,
yet v.Convert(t) might panic nevertheless.

This is a fairly unavoidable consequence of the decision
to add the first-ever conversion that can panic.

ConvertibleTo describes a relationship between types,
but whether the conversion panics now depends on the value,
not just the type.

If this turns out to be a problem, we can add v.ConvertibleTo(t),
or something similar, to allow callers to avoid the panic.

This is the last of the changes needed to complete the implementation.

Fixes #395

Change-Id: I79b7e4dd87a67a47723e00a65d0b1ac6090371b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/301652
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 00:54:39 +00:00
Josh Bleecher Snyder
c18744377a go/types: allow conversion from slice to array ptr
These match the changes to cmd/compile/internal/types2 in CL 301650.

Updates #395

Change-Id: I1e85b6355c8c8fdba0996c26a2505c65fab908d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/301651
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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2021-04-21 00:54:01 +00:00
Josh Bleecher Snyder
faa4fa1a6e cmd/compile: allow conversion from slice to array ptr
Panic if the slice is too short.

Updates #395

Change-Id: I90f4bff2da5d8f3148ba06d2482084f32b25c29a
Reviewed-on: https://go-review.googlesource.com/c/go/+/301650
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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2021-04-21 00:53:48 +00:00
Josh Bleecher Snyder
1c268431f4 spec: allow conversion from slice to array ptr
Implementation follows in subsequent changes.

Updates #395

Change-Id: Ic97ee822805e4c236fdd9d224e776cb2ae62c817
Reviewed-on: https://go-review.googlesource.com/c/go/+/216424
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-04-20 23:47:34 +00:00
Keith Randall
e12b0afa54 cmd/compile: separate out parameter and field export encoding
These two types of *types.Field encode different concepts, so we
encode them separately (and ignore fields that don't matter for
each concept).

Change-Id: I9d1608413949a109f12a3ebd52cd7af5f476e415
Reviewed-on: https://go-review.googlesource.com/c/go/+/312130
Trust: Keith Randall <khr@golang.org>
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2021-04-20 23:41:54 +00:00
Ian Lance Taylor
48e3d92454 Revert "runtime: implement runqdrain() for GC mark worker goroutines"
This reverts CL 310149.

Reason for revert: Breaks longtest builders:

https://build.golang.org/log/6af9fb147fa3101154db10e7ce055e8267cd4c93
https://build.golang.org/log/172ed6e1ec3bb503370333ee421c590fd2a72d0a

Change-Id: Iaf5a8b9eec51d0517311e050d0b0f7569759d292
Reviewed-on: https://go-review.googlesource.com/c/go/+/312129
Trust: Ian Lance Taylor <iant@golang.org>
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2021-04-20 22:47:50 +00:00
Keith Randall
c7d708e42e cmd/compile: pass struct field note information along in exported info
This is needed to make field tracking work correctly.

Change-Id: I0c3452a48d6f36862f6ee8aacc001813866c0ad4
Reviewed-on: https://go-review.googlesource.com/c/go/+/312069
Trust: Keith Randall <khr@golang.org>
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2021-04-20 22:39:22 +00:00
Cherry Zhang
f448cb8ba8 cmd/compile: use f.Nname.Type() in makeABIWrapper
Apparently, f.Nname.Ntype.Type() doesn't work with types2, as it
doesn't set Ntype, unlike the old type checker. f.Nname.Type()
works for both.

Change-Id: I6fa8a81c9fc7b65e008d9f158b88f0d56d84c3ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/312089
Trust: Cherry Zhang <cherryyz@google.com>
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2021-04-20 21:59:20 +00:00
Tobias Klauser
57b0d838ed net: pass MSG_CMSG_CLOEXEC in ReadMsgUnix on dragonfly, netbsd and openbsd
Add support for passing MSG_CMSG_CLOEXEC to the recvmsg syscall on
dragonfly, netbsd and openbsd. MSG_CMSG_CLOEXEC on freebsd is currently
broken, see https://reviews.freebsd.org/D29328.

Change-Id: Ie4c6e3cb550cd0ae32a1c2acca12edf77569e96a
Reviewed-on: https://go-review.googlesource.com/c/go/+/311570
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2021-04-20 21:00:46 +00:00
Tobias Klauser
3f8e64878a internal/poll, net: fix comments regarding accept and sysSocket
The implementation of accept was moved from package net to internal/poll
in CL 36799.

Change-Id: I6e5964e0ee22e9c84bc444860cdd497817451fec
Reviewed-on: https://go-review.googlesource.com/c/go/+/311571
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2021-04-20 21:00:32 +00:00
Michael Pratt
dbade774c3 runtime: refactor findrunnable spinning recheck
Break the main components of the findrunnable spinning -> non-spinning
recheck out into their own functions, which simplifies both findrunnable
and the new functions, which can make use of fancy features like early
returns.

This CL should have no functional changes.

For #43997
For #44313

Change-Id: I6d3060fcecda9920a3471ff338f73d53b1d848a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/307914
Trust: Michael Pratt <mpratt@google.com>
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2021-04-20 20:58:52 +00:00
Jinzhu
7473a6a0eb reflect: fix stack overflow panic when using haveIdenticalUnderlyingType
haveIdenticalUnderlyingType raises stack overflow when compares
self-referential structs having same structure in different packages.

Change-Id: I7c79ab988edcffadcf7e0730a50b4d31b136bb6a
GitHub-Last-Rev: 4d4217f0c1
GitHub-Pull-Request: golang/go#45543
Reviewed-on: https://go-review.googlesource.com/c/go/+/309729
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
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2021-04-20 20:14:14 +00:00
Andy Pan
fbb600b283 runtime: implement runqdrain() for GC mark worker goroutines
Change-Id: Ida44a2e07f277bee8806538ecee4beee3474cf3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/310149
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Michael Pratt <mpratt@google.com>
Trust: Ian Lance Taylor <iant@golang.org>
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2021-04-20 19:48:29 +00:00
Cherry Zhang
77860ad280 cmd/compile: guard partially live arg spilling with number of registers
The code that does partially live in-register arg spilling is
currently guarded with GOEXPERIMENT=regabiargs. But on platforms
where GOEXPERIMENT=regabiargs is not enabled there are still tests
that use register args. Guard it with actual number of registers
used, so it covers both.

Should fix the freeBSD builder.

Change-Id: I0d3c49d7a2389096cb6b17ca35b9b4ce567bc91e
Reviewed-on: https://go-review.googlesource.com/c/go/+/311830
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-20 18:34:56 +00:00
Cherry Zhang
109d7580a5 cmd/compile: disable name preservation on copies in expand_calls
Apparently CL 309330 caused the compiler OOMing on some large
input (giant generated switch statement). I don't quite understand
it for now. Disable it for now.

Change-Id: I19c84f3f5e158897bff0b32d6217fcff3c66874d
Reviewed-on: https://go-review.googlesource.com/c/go/+/311829
Trust: Cherry Zhang <cherryyz@google.com>
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2021-04-20 16:44:18 +00:00
Michael Pratt
60ab197bc2 runtime: refactor work stealing to dedicated function
findrunnable has grown very large and hard to follow over the years.
Parts we can split out into logical chunks should help make it more
understandable and easier to change in the future.

The work stealing loop is one such big chunk that is fairly trivial to
split out into its own function, and even has the advantage of
simplifying control flow by removing a goto around work stealing.

This CL should have no functional changes.

For #43997.
For #44313.

Change-Id: Ie69670c7bc60bd6c114e860184918717829adb22
Reviewed-on: https://go-review.googlesource.com/c/go/+/307913
Trust: Michael Pratt <mpratt@google.com>
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Reviewed-by: Chris Hines <chris.cs.guy@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-20 16:00:27 +00:00
Austin Clements
9dd71ba913 internal/buildcfg: enable regabiargs by default
For #40724.

Change-Id: I7509668478d20dd625f210e5a33f5d896a76d6b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/310176
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-20 15:45:02 +00:00
Rob Findley
24875e3880 cmd/compile/internal/types2: fix some typos in rawLookupFieldOrMethod
Change-Id: Ibc04a82b1d618deeb9bc168ba518dbf1d752fba7
Reviewed-on: https://go-review.googlesource.com/c/go/+/311456
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-20 15:14:05 +00:00
Rob Findley
4ce49b4a15 go/types: support type parameters in NewMethodSet
Add handling for TypeParams in NewMethodSet, to bring it in sync with
lookupFieldOrMethod. Also add a test, since we had none. I wanted this
fix to get gopls completion working with type params, but due to the
subtlety of lookupFieldOrMethod, I left a TODO to confirm that there are
no behavioral differences between the APIs.

Updates #45639

Change-Id: I16723e16d4d944ca4ecb4d87fc196815abb6fcff
Reviewed-on: https://go-review.googlesource.com/c/go/+/311455
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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2021-04-20 15:13:47 +00:00
Austin Clements
af8a176e91 internal/buildcfg: enable regabidefer by default
For #40724.

Change-Id: If3a66c0e29cb20dd29ac13c8d00aa46ee279ab97
Reviewed-on: https://go-review.googlesource.com/c/go/+/310175
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-20 14:55:35 +00:00
Cherry Zhang
3ff6ff7f84 cmd/compile: preserve pointerness when creating map key temp
When creating the temporary for map functions, if the key
contains pointer, we need to create pointer-typed temporary. So
if the temporary is live across a function call, the pointer is
live.

Change-Id: Id6e14ec9def8bc7987f0f8ce8423caf1e3754fcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/311379
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-20 14:30:03 +00:00
Ian Lance Taylor
fe26dfadc3 net: use syscall.fcntl on libc systems
Should fix the AIX builder.

Change-Id: I3498805fb2eee2f0ad50268b5afbbf091c5f6e63
Reviewed-on: https://go-review.googlesource.com/c/go/+/311650
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-20 02:42:23 +00:00
Cherry Zhang
0ccdcb2102 runtime: crash the GC when clobberdead pointer is seen
When -clobberdead compiler flag is set, the compiler inserts
instructions that set dead slots a specific value. If the GC sees
this value as a live pointer, something is probably wrong. Crash.

Only do this on AMD64 for now, as it is the only platform where
compiler's clobberdead mode is implemented. And on AMD64 the
clobberdead address can never be a valid address.

Change-Id: Ica687b132b5d3ba2a062500d13264fa730405d11
Reviewed-on: https://go-review.googlesource.com/c/go/+/310330
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-20 01:47:04 +00:00
Yury Smolsky
4f5aec4603 all: remove redundant spaces before . and ,
Change-Id: I6a4bd2544276d0638bddf07ebcf2ee636db30fea
Reviewed-on: https://go-review.googlesource.com/c/go/+/311009
Run-TryBot: Yury Smolsky <yury@smolsky.by>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2021-04-20 00:49:17 +00:00
Rob Findley
9f87943424 go/types: fix panic when using multiple type arguments
Fix a panic caused by using type arguments without first unpacking.

This was noticed in the review of CL 300998, but unfortunately not yet
fixed.

Fixes #45635

Change-Id: I8ab1720f3e27a6002bc925f0eea943ec6f778341
Reviewed-on: https://go-review.googlesource.com/c/go/+/311669
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2021-04-20 00:14:27 +00:00
Cherry Zhang
3711ea0b5d cmd/compile: do not clobber arguments for reflect.callReflect and callMethod's ABI wrappers
reflect.callReflect and reflect.callMethod are called from special
functions makeFuncStub and methodValueCall. The runtime expects
that it can find the first argument (ctxt) at 0(SP) in
makeFuncStub and methodValueCall's frame. Normally callReflect and
callMethod already do not modify the argument, and keep it alive.
But the compiler-generated ABI wrappers don't do that. Special
case the wrappers to not clobber its arguments.

Change-Id: I1769f49b81c38eabe452d561001c418352814d86
Reviewed-on: https://go-review.googlesource.com/c/go/+/310889
Trust: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-19 23:17:10 +00:00
Rob Findley
b3a5640397 go/types: remove the concept of finals
Checker.finals and the corresponding atEnd were added in CL 191418 as a
mechanism to postpone interface type comparison until after all
interfaces were complete. In the intervening CL 195837 we've adopted a
convention of ensuring that interfaces are complete before comparing
them. Since then we've also added the additional case of expansion for
lazily resolving syntax.

Checker.later defers resolution of types until points in the checking
pass where all reachable types can be fully type checked, so the concept
of finals should no longer be necessary.

Change-Id: I58818c1a6b605dccc9b0ecb3a1f6859c138175d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/299590
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-19 23:08:21 +00:00
Rob Findley
62cad233a6 go/types: remove stale commented-out testdata
Change-Id: I44b191204b05cd44ab6e3c662ddd05596aa3af1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/299831
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2021-04-19 23:08:09 +00:00
Michael Hudson-Doyle
7252e1e5b6 cmd/link: convert -I foo to -Wl,--dynamic-linker,foo when externally linking
Fixes #22446

Change-Id: Id5b3fbc9cd3a7d6c4bf4e28428b8cb6d45a9ca92
Reviewed-on: https://go-review.googlesource.com/c/go/+/310349
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2021-04-19 23:02:15 +00:00
Austin Clements
88655480f3 internal/buildcfg: enable regabireflect by default
For #40724.

Change-Id: Ib3e4a67c3826176f0d51619754270022344ee194
Reviewed-on: https://go-review.googlesource.com/c/go/+/310174
Trust: Austin Clements <austin@google.com>
Trust: Russ Cox <rsc@golang.org>
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2021-04-19 22:25:20 +00:00
Michael Fraenkel
bc5de81e70 testing: remove data races so that parallel benchmarks can safely call .Fatal* and .Skip*
Protects the usages of (*common).finished with locks
to prevent data races, thus allowing benchmarks to safely invoke
.Fatal* and .Skip* concurrently.

Fixes #45526

Change-Id: I2b4846f525c426d6c7d3418f8f6c86446adbf986
Reviewed-on: https://go-review.googlesource.com/c/go/+/309572
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
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Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-19 22:06:05 +00:00
HowJMay
e97d8eb027 net: pass MSG_CMSG_CLOEXEC flag in ReadMsgUnix
As mentioned in #42765, calling "recvmsg" syscall on Linux should come
with "MSG_CMSG_CLOEXEC" flag.

For other systems which not supports "MSG_CMSG_CLOEXEC". ReadMsgUnix()
would check the header. If the header type is "syscall.SCM_RIGHTS",
then ReadMsgUnix() would parse the SocketControlMessage and call each
fd with "syscall.CloseOnExec"

Fixes #42765

Change-Id: I74347db72b465685d7684bf0f32415d285845ebb
GitHub-Last-Rev: ca59e2c9e0
GitHub-Pull-Request: golang/go#42768
Reviewed-on: https://go-review.googlesource.com/c/go/+/272226
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
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2021-04-19 21:27:43 +00:00