Mauri de Souza Meneguzzo [Thu, 10 Aug 2023 21:13:11 +0000 (21:13 +0000)]
archive/tar: add AddFS method to Writer
The method AddFS can be used to add the contents of a fs.FS filesystem
to a tar archive. This method walks the directory tree starting at the root
of the filesystem and adds each file to the archive.
Fixes #58000
Change-Id: I0e6abac76b76bc5d95b74b7e5b37634ce3f76c85
GitHub-Last-Rev: 11a62bfd7ebc7ca93b1832da15018e6805c92520
GitHub-Pull-Request: golang/go#61599
Reviewed-on: https://go-review.googlesource.com/c/go/+/513316 Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Jes Cok [Tue, 12 Sep 2023 22:43:28 +0000 (22:43 +0000)]
go/doc/comment: update TODO for isStdPkg
Even better is slices.BinarySearch, leave a TODO to update to that when possible.
Change-Id: Ie1ec75c34c0329c536725b45e520693790f0520e
GitHub-Last-Rev: 6cd811b186c95752794cead3ae747f54c2d0d0c5
GitHub-Pull-Request: golang/go#62585
Reviewed-on: https://go-review.googlesource.com/c/go/+/527341
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
sparse conditional constant propagation can discover optimization
opportunities that cannot be found by just combining constant folding
and constant propagation and dead code elimination separately.
This is a re-submit of PR#59575, which fix a broken dominance relationship caught by ssacheck
Updates https://github.com/golang/go/issues/59399
Change-Id: I57482dee38f8e80a610aed4f64295e60c38b7a47
GitHub-Last-Rev: 830016f24e3a5320c6c127a48ab7c84e2fc672eb
GitHub-Pull-Request: golang/go#60469
Reviewed-on: https://go-review.googlesource.com/c/go/+/498795
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Heschi Kreinick <heschi@google.com> Reviewed-by: Keith Randall <khr@golang.org>
thepudds [Thu, 15 Jun 2023 19:09:11 +0000 (15:09 -0400)]
cmd/compile: add a 'Tips' section to README to help new contributors
This CL adds a new 'Tips' section to the cmd/compile README.
The primary intent is to help new-ish contributors.
It includes some basics on getting started, testing changes,
viewing coverage, juggling different compiler versions,
some links to additional tools, and so on.
Updates #30074
Change-Id: I393bf1137db9d2bb851f7e254b08455273ccad8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/503895
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Kir Kolyshkin [Sat, 9 Sep 2023 11:14:42 +0000 (04:14 -0700)]
os: fix TestRenameCaseDifference
Saw this failing on windows like this:
--- FAIL: TestRenameCaseDifference (2.96s)
--- FAIL: TestRenameCaseDifference/dir (1.64s)
testing.go:1226: TempDir RemoveAll cleanup: remove C:\Users\gopher\AppData\Local\Temp\1\TestRenameCaseDifferencedir1375918868\001: The process cannot access the file because it is being used by another process.
--- FAIL: TestRenameCaseDifference/file (1.32s)
testing.go:1226: TempDir RemoveAll cleanup: remove C:\Users\gopher\AppData\Local\Temp\1\TestRenameCaseDifferencefile3272269402\001: The process cannot access the file because it is being used by another process.
FAIL
The reason might be the directory fd is not closed. This may be
mitigated by retries in removeAll function from testing package,
but apparently it does not succeed all the time.
A link to the failed run which made me look into this: https://ci.chromium.org/ui/p/golang/builders/try/gotip-windows-386/b8770439049015378129/overview
Change-Id: Ibebe94958d1aef8d1d0eca8a969675708cd27a7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/527175
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Rob Pike <r@golang.org>
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Jes Cok [Tue, 12 Sep 2023 13:18:33 +0000 (13:18 +0000)]
all: calculate the median uniformly
This is a follow up of CL 526496.
Change-Id: I9f351951bf975e31befd36b9c951d195d2f8f9f7
GitHub-Last-Rev: 4307adafbffef7494d6f807b69df3e56328d6bf4
GitHub-Pull-Request: golang/go#62590
Reviewed-on: https://go-review.googlesource.com/c/go/+/527576
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
Jonathan Amsterdam [Mon, 11 Sep 2023 16:09:40 +0000 (12:09 -0400)]
net/http: routing tree
This CL implements a decision tree for efficient routing.
The tree holds all the registered patterns. To match
a request, we walk the tree looking for a match.
Change-Id: I7ed1cdf585fc95b73ef5ca2f942f278100a90583
Reviewed-on: https://go-review.googlesource.com/c/go/+/527315
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Matthew Dempsky [Tue, 12 Sep 2023 11:51:16 +0000 (04:51 -0700)]
cmd/compile/internal/ir: add NewZero
This constructs a zero value of any type, which helps address some
corner case scenarios.
It should also eventually handle the predeclared "zero" value, at
least as currently implemented in go.dev/cl/520336.
For #61372.
Change-Id: I3a86a94fd8fa388c9c6bf281da8aa532b3da00fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/527696
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Robert Griesemer <gri@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
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Jonathan Amsterdam [Mon, 11 Sep 2023 14:59:48 +0000 (10:59 -0400)]
net/http: mapping data structure
Our goal for the new ServeMux patterns is to match the routing
performance of the existing ServeMux patterns. To achieve that
we needed to optimize lookup for small maps.
This CL introduces a simple data structure called a mapping that
optimizes lookup by using a slice for small collections of key-value
pairs, switching to a map when the collection gets large.
Mappings are a core part of the routing algorithm, which uses a
decision tree to match path elements. The children of a tree node are
held in a mapping.
Change-Id: I923b3ad1376ace2c3e3421aa9b802ad12d47c871
Reviewed-on: https://go-review.googlesource.com/c/go/+/526617
Run-TryBot: Jonathan Amsterdam <jba@google.com>
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Michael Pratt [Mon, 4 Sep 2023 13:55:01 +0000 (09:55 -0400)]
runtime: allow update of system stack bounds on callback from C thread
[This is a redo of CL 525455 with the test fixed on darwin by defining
_XOPEN_SOURCE, and disabled with android, musl, and openbsd, which do
not provide getcontext.]
Since CL 495855, Ms are cached for C threads calling into Go, including
the stack bounds of the system stack.
Some C libraries (e.g., coroutine libraries) do manual stack management
and may change stacks between calls to Go on the same thread.
Changing the stack if there is more Go up the stack would be
problematic. But if the calls are completely independent there is no
particular reason for Go to care about the changing stack boundary.
Thus, this CL allows the stack bounds to change in such cases. The
primary downside here (besides additional complexity) is that normal
systems that do not manipulate the stack may not notice unintentional
stack corruption as quickly as before.
Note that callbackUpdateSystemStack is written to be usable for the
initial setup in needm as well as updating the stack in cgocallbackg.
Fixes #62440.
For #62130.
Change-Id: I0fe0134f865932bbaff1fc0da377c35c013bd768
Reviewed-on: https://go-review.googlesource.com/c/go/+/527715
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
Than McIntosh [Mon, 11 Sep 2023 16:15:48 +0000 (12:15 -0400)]
cmd/compile/internal/base: keep Ctxt.Flag_optimize in sync with Flag.N
This patch fixes an inconsistency in compiler flag handling introduced
accidentally in CL 521699. In the compiler we have both base.Flag.N
(which records whether the user has supplied the "-N" flag to disable
optimization) and base.Ctxt.Flag_optimize (which tracks whether
optimization is turned on). In this case Flag.N was updated without a
corresponding change to Ctxt.Flag_optimize, which led to problems with
DWARF generation for the runtime.
This CL doesn't include a regression test; a test will be added later
in the x/debug repo in a subsequent CL.
Updates #62523.
Change-Id: I0c383bb43ec0a0e7c12e7e2852c0590731416d6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/527319 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Alessandro Arzilli <alessandro.arzilli@gmail.com>
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Matthew Dempsky [Tue, 12 Sep 2023 01:50:26 +0000 (18:50 -0700)]
cmd/compile/internal/types: remove Type.vargen
The unified frontend diasmbiguates local types by putting vargen
directly into their symbol name instead. We no longer need a separate
int field for it.
Change-Id: I556c588ed68c5e2cb324cd46abd934894b5aaef9
Reviewed-on: https://go-review.googlesource.com/c/go/+/527517 Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
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Cherry Mui [Mon, 11 Sep 2023 19:53:49 +0000 (15:53 -0400)]
cmd/link: disable DWARF by default in c-shared mode on darwin
Currently, linking a Go c-shared object with C code using Apple's
new linker, it fails with
% cc a.c go.so
ld: segment '__DWARF' filesize exceeds vmsize in 'go.so'
Apple's new linker has more checks for unmapped segments. It is
very hard to make it accept a Mach-O shared object with an
additional DWARF segment.
We may want to stop combinding DWARF into the shared object (see
also #62577). For now, disable DWARF by default in c-shared mode
on darwin. (One can still enable it with -ldflags=-w=0, which will
contain DWARF, but it will need the old C linker to link against
with.)
For #61229.
Change-Id: I4cc77da54fac10e2c2cbcffa92779cba82706d75
Reviewed-on: https://go-review.googlesource.com/c/go/+/527415
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Matthew Dempsky [Mon, 11 Sep 2023 21:31:55 +0000 (14:31 -0700)]
cmd/compile: rename OEFACE to OMAKEFACE and remove OCONVIDATA
The "eface" in OEFACE suggests it's only for empty interfaces, and the
documentation suggests that too. But it's actually used for both empty
and non-empty interfaces, so rename to OMAKEFACE and adjust docs
accordingly.
Also, remove OCONVIDATA. This was used by the 1.18 frontend for
constructing interfaces containing derived types, but the unified
frontend always uses OCONVIFACE instead, so this is unused now.
Change-Id: I6ec5c62f909b26027f2804e5b3373b7a00029246
Reviewed-on: https://go-review.googlesource.com/c/go/+/527336
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Robert Griesemer <gri@google.com>
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Ian Lance Taylor [Tue, 12 Sep 2023 00:07:55 +0000 (00:07 +0000)]
Revert "os/exec: avoid calling LookPath in cmd.Start for resolved paths"
This reverts CL 512155.
Reason for revert: CL 512155 introduced a race in that it caused
cmd.Start to set cmd.Path. Previously it was fine if code looked
at cmd.Path in one goroutine while calling cmd.Start in a different
goroutine.
A test case for this race is in CL 527495.
Change-Id: Ic18fdadf6763727f8ea748280d5f0e601b9bf374
Reviewed-on: https://go-review.googlesource.com/c/go/+/527337
Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
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Matthew Dempsky [Fri, 8 Sep 2023 23:21:17 +0000 (16:21 -0700)]
cmd/compile/internal/noder: handle unsafe.Sizeof, etc in unified IR
Previously, the unified frontend implemented unsafe.Sizeof, etc that
involved derived types by constructing a normal OSIZEOF, etc
expression, including fully instantiating their argument. (When
unsafe.Sizeof is applied to a non-generic type, types2 handles
constant folding it.)
This worked, but involves unnecessary work, since all we really need
to track is the argument type (and the field selections, for
unsafe.Offsetof).
Further, the argument expression could generate temporary variables,
which would then go unused after typecheck replaced the OSIZEOF
expression with an OLITERAL. This results in compiler failures after
CL 523315, which made later passes stricter about expecting the
frontend to not construct unused temporaries.
Fixes #62515.
Change-Id: I37baed048fd2e35648c59243f66c97c24413aa94
Reviewed-on: https://go-review.googlesource.com/c/go/+/527097 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
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Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Matthew Dempsky [Thu, 24 Mar 2022 19:27:39 +0000 (12:27 -0700)]
cmd/compile/internal/staticinit: make staticopy safe
Currently, cmd/compile optimizes `var a = true; var b = a` into `var a
= true; var b = true`. But this may not be safe if we need to
initialize any other global variables between `a` and `b`, and the
initialization involves calling a user-defined function that reassigns
`a`.
This CL changes staticinit to keep track of the initialization
expressions that we've seen so far, and to stop applying the
staticcopy optimization once we've seen an initialization expression
that might have modified another global variable within this package.
To help identify affected initializers, this CL adds a -d=staticcopy
flag to warn when a staticcopy is suppressed and turned into a dynamic
copy.
Currently, `go build -gcflags=all=-d=staticcopy std` reports only four
instances:
```
encoding/xml/xml.go:1600:5: skipping static copy of HTMLEntity+0 with map[string]string{...}
encoding/xml/xml.go:1869:5: skipping static copy of HTMLAutoClose+0 with []string{...}
net/net.go:661:5: skipping static copy of .stmp_31+0 with poll.ErrNetClosing
net/http/transport.go:2566:5: skipping static copy of errRequestCanceled+0 with ~R0
```
Fixes #51913.
Change-Id: Iab41cf6f84c44f7f960e4e62c28a8aeaade4fbcf
Reviewed-on: https://go-review.googlesource.com/c/go/+/395541
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: David Chase <drchase@google.com>
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Matthew Dempsky [Wed, 11 May 2022 19:44:06 +0000 (12:44 -0700)]
runtime: avoid staticinit dependency with sigsetAllExiting
Currently, package runtime runs `osinit` before dynamic initialization
of package-scope variables; but on GOOS=linux, `osinit` involves
mutating `sigsetAllExiting`.
This currently works because cmd/compile and gccgo have
non-spec-conforming optimizations that statically initialize
`sigsetAllExiting`, but disabling that optimization causes
`sigsetAllExiting` to be dynamically initialized instead. This in turn
causes the mutations in `osinit` to get lost.
This CL moves the initialization of `sigsetAllExiting` from `osinit`
into its initialization expression, and then removes the special case
for continuing to perform the static-initialization optimization for
package runtime.
Updates #51913.
Change-Id: I3be31454277c103372c9701d227dc774b2311dad
Reviewed-on: https://go-review.googlesource.com/c/go/+/405549
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Heschi Kreinick <heschi@google.com>
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Matthew Dempsky [Wed, 30 Aug 2023 11:19:35 +0000 (04:19 -0700)]
cmd/compile/internal/ir: add missing SetTypecheck
This was missed earlier, because NewConstAt is only used now to
construct the predeclared "true" and "false" constants. But these
constants are no longer actually accessed with unified IR.
For constant expressions, types2 (and go/types) sets
TypeAndValue.Value for the expression to the appropriate constant
value. The unified writer recognizes when expressions are constants,
and simply writes the underlying value, regardless of the original
expression. As a result, we never end up actually referencing the
*named* "true" and "false" constants; we just always construct
anonymous constant "true" and "false" values.
However, a manually constructed tree that includes an *ir.Name that
"Uses" the predeclared true/false Const Objects, yet doesn't set
TypeAndValue.Value will instead end up trying to use named constants
constructed with NewConstAt.
Thanks to Russ for reporting the issue on CL 510541, and to Cuong for
identifying the fix.
Change-Id: I0614105379d63ea76d7244ebd1e4db5c239d4670
Reviewed-on: https://go-review.googlesource.com/c/go/+/524357 Reviewed-by: Heschi Kreinick <heschi@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Michael Pratt [Fri, 8 Sep 2023 21:59:02 +0000 (17:59 -0400)]
runtime: don't clear procid on netbsd
This is a partial revert of CL 526118.
NetBSD uses mp.procid in locking (semawake). unminit is called
surprisingly early in mexit, and there is definitely locking after that
point, so it isn't safe to clear procid so early.
Fixes #62524.
Fixes #62531.
Change-Id: Iefbef63e84fc0395e255970a301401e1187a910d
Reviewed-on: https://go-review.googlesource.com/c/go/+/527057 Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
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Matthew Dempsky [Sat, 9 Sep 2023 01:04:31 +0000 (18:04 -0700)]
cmd/compile/internal/typecheck: fix closure field naming
When creating the struct type to hold variables captured by a function
literal, we currently reuse the captured variable names as fields.
However, there's no particular reason to do this: these struct types
aren't visible to users, and it adds extra complexity in making sure
fields belong to the correct packages.
Further, it turns out we were getting that subtly wrong. If two
function literals from different packages capture variables with
identical names starting with an uppercase letter (and in the same
order and with corresponding identical types) end up in the same
function (e.g., due to inlining), then we could end up creating
closure struct types that are "different" (i.e., not types.Identical)
yet end up with equal LinkString representations (which violates
LinkString's contract).
The easy fix is to just always use simple, exported, generated field
names in the struct. This should allow further struct reuse across
packages too, and shrink binary sizes slightly.
Fixes #62498.
Change-Id: I9c973f5087bf228649a8f74f7dc1522d84a26b51
Reviewed-on: https://go-review.googlesource.com/c/go/+/527135
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com>
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Michael Pratt [Fri, 8 Sep 2023 18:54:29 +0000 (14:54 -0400)]
runtime: set stackguard1 on extra M g0
Standard Ms set g0.stackguard1 to the same value as stackguard0 in
mstart0. For consistency, extra Ms should do the same for their g0. Do
this in needm -> callbackUpdateSystemStack.
Background: getg().stackguard1 is used as the stack guard for the stack
growth prolouge in functions marked //go:systemstack [1]. User Gs set
stackguard1 to ^uintptr(0) so that the check always fail, calling
morestackc, which throws to report a //go:systemstack function call on a
user stack.
g0 setting stackguard1 is unnecessary for this functionality. 0 would be
sufficient, as g0 is always allowed to call //go:systemstack functions.
However, since we have the check anyway, setting stackguard1 to the
actual stack bound is useful to detect actual stack overflows on g0
(though morestackc doesn't detect this case and would report a
misleading message about user stacks).
[1] cmd/internal/obj calls //go:systemstack functions AttrCFunc. This is
a holdover from when the runtime contained actual C functions. But since
CL 2275, it has simply meant "pretend this is a C function, which would
thus need to use the system stack". Hence the name morestackc. At this
point, this terminology is pretty far removed from reality and should
probably be updated to something more intuitive.
Change-Id: I8d0e5628ce31ac6a189a7d7a4124be85aef89862
Reviewed-on: https://go-review.googlesource.com/c/go/+/527056
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Michael Pratt [Mon, 4 Sep 2023 13:55:01 +0000 (09:55 -0400)]
runtime: allow update of system stack bounds on callback from C thread
Since CL 495855, Ms are cached for C threads calling into Go, including
the stack bounds of the system stack.
Some C libraries (e.g., coroutine libraries) do manual stack management
and may change stacks between calls to Go on the same thread.
Changing the stack if there is more Go up the stack would be
problematic. But if the calls are completely independent there is no
particular reason for Go to care about the changing stack boundary.
Thus, this CL allows the stack bounds to change in such cases. The
primary downside here (besides additional complexity) is that normal
systems that do not manipulate the stack may not notice unintentional
stack corruption as quickly as before.
Note that callbackUpdateSystemStack is written to be usable for the
initial setup in needm as well as updating the stack in cgocallbackg.
Fixes #62440.
For #62130.
Change-Id: I7841b056acea1111bdae3b718345a3bd3961b4a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/525455
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Jes Cok [Thu, 7 Sep 2023 11:07:30 +0000 (11:07 +0000)]
all: calculate the median uniformly
Like sort.Search, use "h := int(uint(i+j) >> 1)" style code to calculate
the median.
Change-Id: Ifb1a19dde1c6ed6c1654bc642fc9565a8b6c5fc4
GitHub-Last-Rev: e2213b738832f1674948d6507f40e2c0b98cb972
GitHub-Pull-Request: golang/go#62503
Reviewed-on: https://go-review.googlesource.com/c/go/+/526496
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Dmitri Shuralyov [Fri, 8 Sep 2023 23:28:58 +0000 (19:28 -0400)]
cmd/compile/internal/inline/inlheur: delete ConstExpr case
ir.ConstExpr was deleted in CL 526395, so no need to check for it.
Fixes the build error.
Change-Id: I642dab70d17369bc7c9ae880666ef42ff099b770
Reviewed-on: https://go-review.googlesource.com/c/go/+/526196
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Than McIntosh [Fri, 8 Sep 2023 23:07:12 +0000 (23:07 +0000)]
Revert "cmd/cgo: silence unaligned-access"
This reverts commit http://go.dev/cl/c/go/+/526915
Reason for revert: darwin builders unhappy with '-Wunaligned-access' C compiler flag
Change-Id: I5e6ca7c9a0ca08b7e758b7f603da70a2fca79b58
Reviewed-on: https://go-review.googlesource.com/c/go/+/526978 Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Than McIntosh [Mon, 14 Aug 2023 13:41:43 +0000 (09:41 -0400)]
runtime: test change to adapt to new inliner
The new inliner tries to de-prioritize inlining of call sites on panic
paths, e.g. for a call such as the one to "foo" below, the inliner
will use a much lower size threshold when deciding whether to inline,
since the path is very likely to be "cold".
if mumble() {
foo() <<-- here
panic("bad")
}
This patch reworks one of the traceback tests is relying on the old
inliner's "inline F everywhere if F inlinable" strategy by tweaking
the code slightly (no change in test functionality).
Change-Id: I83a686b0cc4d94a6cfc63d1e84e45455c1afd5b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/519196
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Than McIntosh [Tue, 18 Jul 2023 20:17:12 +0000 (16:17 -0400)]
cmd/compile/internal/inline/inlheur: assign scores to callsites
Assign scores to callsites based on previously computed function
properties and callsite properties. This currently works by taking the
size score for the function (as computed by CanInline) and then making
a series of adjustments, positive or negative based on various
function and callsite properties.
NB: much work also remaining on deciding what are the best score
adjustment values for specific heuristics. I've picked a bunch of
arbitrary constants, but they will almost certainly need tuning and
tweaking to arrive at something that has good performance.
Updates #61502.
Change-Id: I887403f95e76d7aa2708494b8686c6026861a6ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/511566 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Than McIntosh [Tue, 18 Jul 2023 15:45:42 +0000 (11:45 -0400)]
cmd/compile/internal/inline: add call site flag generation
Add code to detect call sites that are nested in loops, call sites
that are on an unconditional path to panic/exit, and call sites within
"init" functions. The panic-path processing reuses some of the
logic+state already present for the function flag version of "calls
panic/exit".
Updates #61502.
Change-Id: I1d728e0763282d3616a9cbc0a07c5cda115660f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/511565 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Than McIntosh [Wed, 12 Jul 2023 20:13:39 +0000 (16:13 -0400)]
cmd/compile/internal/inline: build call site table
Build up a table of (potentially) inlinable call sites during inline
heuristic analysis, and introduce a framework for analyzing each call
site to collect applicable flags (for example, is call nested in
loop). This patch doesn't include any of the flag analysis, just the
machinery to collect the callsites and a regression test harness.
Updates #61502.
Change-Id: Ieaf4a008ac9868e9762c63f5b59bd264dc71ab30
Reviewed-on: https://go-review.googlesource.com/c/go/+/511564 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Than McIntosh [Tue, 11 Jul 2023 16:42:12 +0000 (12:42 -0400)]
cmd/compile/internal/inline: extend flag calculation via export data
Extend the code that computes various properties and parameter flags
to incorporate information from export data in addition to things we
can get from the current package. Specifically:
- when deciding whether the current function always calls panic/exit,
check to see whether it has an unconditional call to some other
function that has that flag.
- when computing "parameter feeds" properties, look not just for
cases where a parameter feeds an interesting construct (if/switch,
indirect/interface call, etc) but where it feeds a call whose
corresponding param has that flag.
- when computing return properties, if a given return is always the
results of a call to X, then set the return properties to those
of X.
Updates #61502.
Change-Id: I6472fe98759cccad05b8eed58e4fc568201d88ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/511563 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Than McIntosh [Thu, 29 Jun 2023 17:22:26 +0000 (13:22 -0400)]
cmd/compile: write "properties" to export data for inlinable funcs
Augment the ir.Inline container to include an entry for function
properties (currently serialized as a string), and if
GOEXPERIMENT=newinliner is set, compute and store function
properties for all inline candidates processed by the inliner.
The idea here is that if the function properties are going to drive
inlining decisions, we'd like to have the same info from non-local /
imported functions as for local / in-package functions, hence we need
to include the properties in the export data.
Hand testing on the compiler itself and with k8s kubelet shows that
this increases the size of export data overall by about 2-3 percent,
so a pretty modest increase.
Updates #61502.
Change-Id: I9d1c311aa8418d02ffea3629c3dd9d8076886d15
Reviewed-on: https://go-review.googlesource.com/c/go/+/511562
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Than McIntosh [Fri, 30 Jun 2023 20:44:31 +0000 (16:44 -0400)]
cmd/compile/internal/inline: analyze function param properties
Add code to analyze properties of function params, specifically
heuristics to look for cases where unmodified params feed into "if"
and "switch" statements in ways that might enable constant folding
and/or dead code elimination if the call were inlined at a callsite
that passes a constant to the correct param. We also look for cases
where a function parameter feeds unmodified into an interface method
call or indirect call.
Updates #61502.
Change-Id: Iaf7297e19637daeabd0ec72be88d654b545546ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/511561
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Egon Elbre [Fri, 8 Sep 2023 08:17:59 +0000 (11:17 +0300)]
cmd/cgo: silence unaligned-access
Clang 14+ introduced a warning when using mixed packed and unpacked structs.
This can cause problems when taking an address of the unpacked struct, which
may end up having a different alignment than expected.
This is not a problem in cgo, which does not take pointers from the packed
struct.
Fixes #62480
Change-Id: If5879eea5e1b77bc6dc7430f68f8c916bff9b090
Reviewed-on: https://go-review.googlesource.com/c/go/+/526915 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
net: synchronize calls to Close in the withTCPConnPair test helper
withTCPConnPair is supposed to return only when both peer functions
have completed. However, due to the use of "defer" it was closing the
peers' connections after the synchronization point instead of before.
Cherry Mui [Mon, 28 Aug 2023 18:59:13 +0000 (14:59 -0400)]
runtime: unskip TestG0StackOverflow
The stack bounds from pthread are not always accurate, and could
cause seg fault if we run out of the actual stack space before
reaching the bounds. Here we use an artificially small stack bounds
to check overflow without actually running out of the system stack.
Change-Id: I8067c5e1297307103b315d9d0c60120293b57aab
Reviewed-on: https://go-review.googlesource.com/c/go/+/523695 Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Matthew Dempsky [Thu, 7 Sep 2023 05:42:11 +0000 (22:42 -0700)]
cmd/compile/internal/ssa: replace Frontend.Auto with Func.NewLocal
Change-Id: I0858568d225daba1c318842dc0c9b5e652dff612
Reviewed-on: https://go-review.googlesource.com/c/go/+/526519
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
Matthew Dempsky [Thu, 7 Sep 2023 05:33:24 +0000 (22:33 -0700)]
cmd/compile/internal/ssagen: call AllocFrame after ssa.Compile
This indirection is no longer necessary.
Change-Id: Ibb5eb1753febdc17a93ea9c35130e3d2b26c360e
Reviewed-on: https://go-review.googlesource.com/c/go/+/526518 Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>
Joe Tsai [Fri, 1 Sep 2023 08:54:25 +0000 (01:54 -0700)]
encoding: modernize Go documentation
Across all encoding packages, linkify declarations if possible.
In some cases, we convert a code block into a bulleted list,
which then further allows for more linkification.
Change-Id: I68fedf362615b34228bab5d4859b7d87d831c570
Reviewed-on: https://go-review.googlesource.com/c/go/+/524977
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Daniel Martí <mvdan@mvdan.cc> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: qiulaidongfeng <2645477756@qq.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Matthew Dempsky [Thu, 7 Sep 2023 05:03:07 +0000 (22:03 -0700)]
cmd/compile/internal/ssa: rename ssagen.TypeOK as CanSSA
No need to indirect through Frontend for this.
Change-Id: I5812eb4dadfda79267cabc9d13aeab126c1479e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/526517 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This method is only used to find the path of the function being
compiled for hash debugging, but it was instead returning the path of
the package being compiled. These are typically the same, but can be
different for certain functions compiled across package boundaries
(e.g., method value wrappers and generic functions).
It's redundant either with f.fe.Func().Sym().Pkg.Path (package path of
the function being compiled) or f.Config.ctxt.Pkgpath (package path of
the compilation unit), so just remove it instead.
Change-Id: I1daae09055043d0ecb1fcc874a0b0006a6f8bddf
Reviewed-on: https://go-review.googlesource.com/c/go/+/526516
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
Matthew Dempsky [Thu, 7 Sep 2023 04:43:58 +0000 (21:43 -0700)]
cmd/compile/internal/ssa: simplify NewFunc API
Add Config and Cache as params rather than documenting that the caller
has to set them manually.
Change-Id: I8d530be695a0c94bcc4211b496d6e57ec2fff029
Reviewed-on: https://go-review.googlesource.com/c/go/+/526515
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
Matthew Dempsky [Wed, 6 Sep 2023 23:11:34 +0000 (16:11 -0700)]
cmd/compile: cleanup uses of ir.Orig and ir.SepCopy
Mostly automated refactoring with gofmt:
gofmt -r 'ir.Orig(n) -> n'
gofmt -r 'ir.SepCopy(n) -> ir.Copy(n)'
Followed by some manual cleanups.
Change-Id: Ib35abeba9e60b70ba463e161fb39358fb058a83e
Reviewed-on: https://go-review.googlesource.com/c/go/+/526398 Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Matthew Dempsky [Wed, 6 Sep 2023 23:05:11 +0000 (16:05 -0700)]
cmd/compile/internal/ir: remove OrigNode
The OrigNode functionality used to be relevant to the typecheck
frontend, because we wanted to report errors using the same syntax as
the user originally wrote. However, now that types2 handles all
spec-required error diagnostics, there's no need to preserve original
nodes anymore.
Change-Id: I64a0540b8952513913021e7b84d165beb1f9f801
Reviewed-on: https://go-review.googlesource.com/c/go/+/526397 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@golang.org>
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Matthew Dempsky [Wed, 6 Sep 2023 23:03:38 +0000 (16:03 -0700)]
cmd/compile/internal/ir: simplify formatting of CompLitExpr
Composite literals always have a type now, so the extra fallback code
isn't necessary. But also, to prepare for the upcoming removal of
OrigNode, we need to print OSLICELIT with Implicit set as
"... argument" to satisfy existing regress tests.
Change-Id: I365e879066903eebf1b78e10c1b505565cea3ce3
Reviewed-on: https://go-review.googlesource.com/c/go/+/526396 Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
Matthew Dempsky [Wed, 6 Sep 2023 22:52:55 +0000 (15:52 -0700)]
cmd/internal/ir: remove ConstExpr in favor of BasicLit
OrigNode will be going away soon, which is the only reason for
ConstExpr to exist. Otherwise, it's identical to BasicLit.
To keep existing code working, change NewConstExpr to construct and
return a BasicLit instead.
Change-Id: I68b43ec1fcaa57e6723f289ce9f953996aeefb14
Reviewed-on: https://go-review.googlesource.com/c/go/+/526395 Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Matthew Dempsky [Wed, 6 Sep 2023 21:00:30 +0000 (14:00 -0700)]
cmd/compile/internal/noder: stop preserving original const strings
One of the more tedious quirks of the original frontend (i.e.,
typecheck) to preserve was that it preserved the original
representation of constants into the backend. To fit into the unified
IR model, I ended up implementing a fairly heavyweight workaround:
simply record the original constant's string expression in the export
data, so that diagnostics could still report it back, and match the
old test expectations.
But now that there's just a single frontend to support, it's easy
enough to just update the test expectations and drop this support for
"raw" constant expressions.
Change-Id: I1d859c5109d679879d937a2b213e777fbddf4f2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/526376 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Cherry Mui [Fri, 8 Sep 2023 16:14:30 +0000 (12:14 -0400)]
runtime: increase g0 stack size in non-cgo case
Currently, for non-cgo programs, the g0 stack size is 8 KiB on
most platforms. With PGO which could cause aggressive inlining in
the runtime, the runtime stack frames are larger and could
overflow the 8 KiB g0 stack. Increase it to 16 KiB. This is only
one per OS thread, so it shouldn't increase memory use much.
Fixes #62120.
Fixes #62489.
Change-Id: I565b154517021f1fd849424dafc3f0f26a755cac
Reviewed-on: https://go-review.googlesource.com/c/go/+/526995 Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Dmitri Shuralyov [Fri, 8 Sep 2023 00:21:44 +0000 (20:21 -0400)]
syscall: skip unshare tests if mount syscall is not available
CL 513779 added crude skips for tests that couldn't work when run under
'unshare --net --map-root-user' as used by the current iteration of the
no-network check in LUCI. Bryan suggested a more targeted way to detect
when the environment is insufficient, which makes it possible to remove
the builder-specific skip and its slightly incorrect explaining comment.
Updates #30612.
Change-Id: I0de79f44ab94d7f1018384c2e959ca7df3a1b0ae
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-amd64-longtest-race
Reviewed-on: https://go-review.googlesource.com/c/go/+/526835
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TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com>
runtime: support for debugger function calls on linux/ppc64le
This CL adds support for debugger function calls on linux ppc64le
platform. The protocol is basically the same as in CL 395754, except for
the following differences:
1, The abi differences which affect parameter passing and frame layout.
2, The closure register is R11.
3, Minimum framesize on pp64le is 32 bytes
4, Added functions to return parent context structure for general purpose
registers in order to work with the way these structures are defined in
ppc64le
Change-Id: I58e01fedad66a818ab322e2b2d8f5104cfa64f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/512575 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Daniel Martí [Thu, 7 Sep 2023 07:42:50 +0000 (08:42 +0100)]
fmt: adjust comment after CL 524940
https://go.dev/cl/524940 swapped a call to Slice with Bytes,
but the comment below still referenced Slice.
Change-Id: Iedc772e1c49c4108bcd06f4cea0e637f011d053c
Reviewed-on: https://go-review.googlesource.com/c/go/+/526356 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: t hepudds <thepudds1460@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Joel Sing [Sun, 27 Aug 2023 14:13:34 +0000 (00:13 +1000)]
cmd/internal/obj/riscv: clean up error checking for encoding
Replace a "fixme" with a more appropriate error. Also invert the condition
so that the error returns early, which is more Go idiomatic.
Change-Id: I03006572c4010fb47037bed3ee1fd7f92bfc20d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/523457
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au> Reviewed-by: M Zhuo <mzh@golangcn.org>
Joel Sing [Sun, 27 Aug 2023 16:08:06 +0000 (02:08 +1000)]
cmd/internal/obj/riscv: correct message in regVal panic
Change-Id: I68be4110216145ad1fb2e5095e1f2b143f9e69ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/523456 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Mark Ryan <markdryan@rivosinc.com> Reviewed-by: M Zhuo <mzh@golangcn.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
Rather than handling shift based scaling in two locations, rework logic
so there is a single exit path.
Change-Id: I832b4932d53183736050059a11019ced08281b3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/523455 Reviewed-by: M Zhuo <mzh@golangcn.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Ian Lance Taylor [Thu, 7 Sep 2023 20:57:23 +0000 (13:57 -0700)]
cmd/api: don't try to parse JSON from stderr of go list
Just send the go list stderr to our stderr.
Change-Id: Iacda573bbe7accbcecb6a957e5d42b55afd10c58
Reviewed-on: https://go-review.googlesource.com/c/go/+/526775 Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
ptracePtr was introduced in CL 470299 for darwin but it's not used on
this platform. Also, the argument types for addr and data were swapped
in the generated ptrace1Ptr (probably because the change was not
generated but done manually).
For #58387
Change-Id: I429ab0c741e19020d98729c34efabce1d9003f56
Reviewed-on: https://go-review.googlesource.com/c/go/+/526475
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Change-Id: Ic2598110cc091362cb09f877b6b86433cacf32c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/526535 Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: abner chenc <chenguoqi@loongson.cn> Reviewed-by: Cherry Mui <cherryyz@google.com>
Daniel Martí [Thu, 7 Sep 2023 09:29:14 +0000 (10:29 +0100)]
encoding/xml: use reflect.Value.Bytes on addressable arrays
Since #47066 was accepted and implemented,
reflect.Value.Bytes can be called directly on addressable arrays,
so there is no longer a need to go through a slice first.
Change-Id: I04d50ddb1b38e7a37fee3dc8be1bd03b22a06a1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/526357 Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Kir Kolyshkin [Sun, 3 Sep 2023 20:49:10 +0000 (13:49 -0700)]
syscall: improve linux SysProcAttr documentation
The SysProcAttr is OS-specific anyway, so it makes little sense to say
that some fields are Linux-specific (they all are anyway).
While at it, make sure to use complete sentences (add missing periods).
Change-Id: Ic0afe3920c2561fd9a657f4edab21939a8f56d57
Reviewed-on: https://go-review.googlesource.com/c/go/+/525395 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Pascal S. de Kloe [Fri, 21 Jul 2023 12:03:49 +0000 (14:03 +0200)]
cmd/doc: print bugs with -all flag
Includes cleanup and deduplication.
fixes: #33970
Change-Id: I7e84b3e5c8fb9c560cf0a1f8b7cbb7a6977666aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/511935 Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Kir Kolyshkin [Thu, 17 Aug 2023 02:20:54 +0000 (19:20 -0700)]
syscall: add support to get pidfd from ForkExec on Linux
Add PidFD support, so that if the PidFD pointer in SysProcAttr is not
nil, ForkExec (and thus all its users) obtains a pidfd from the kernel
during clone(), and writes the result (or -1, if the functionality
is not supported by the kernel) into *PidFD.
The functionality to get pidfd is implemented for both clone3 and clone.
For the latter, an extra argument to rawVforkSyscall is needed, thus the
change in asm files.
Add a trivial test case checking the obtained pidfd can be used to send
a signal to a process, using pidfd_send_signal. To test clone3 code path,
add a flag available to tests only.
Updates #51246.
Change-Id: I2212b69e1a657163c31b4a6245b076bc495777a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/520266
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Jes Cok [Mon, 28 Aug 2023 12:41:02 +0000 (12:41 +0000)]
encoding/gob: fix typo in comment for decAlloc
Change-Id: I89c607ee40358d6d650ba0ea1f05ce7d1df698bd
GitHub-Last-Rev: e78a37118009dbd9468a0f656ad66b989f7c5ada
GitHub-Pull-Request: golang/go#62319
Reviewed-on: https://go-review.googlesource.com/c/go/+/523376 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Rob Pike <r@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Jes Cok [Thu, 31 Aug 2023 11:58:16 +0000 (11:58 +0000)]
encoding/gob: make comment more idiomatic for *Encoder.writer
Change-Id: I89a4d7f4af8dfb67a35647283be6c1d2965595f5
GitHub-Last-Rev: f7c11c156cd0c1d7e9e811c5eb2d19d233c568dd
GitHub-Pull-Request: golang/go#62389
Reviewed-on: https://go-review.googlesource.com/c/go/+/524735 Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: qiulaidongfeng <2645477756@qq.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Rob Pike <r@golang.org>
Jes Cok [Wed, 30 Aug 2023 12:00:03 +0000 (12:00 +0000)]
encoding/gob: swap 'err, i' to correct verbs in decUint8Slice
Change-Id: I76b2dd45179f65e9ed4f1d0f597ca59e49b59a85
GitHub-Last-Rev: b4171e6b836f948ff2973d91a19f0fd58cc8faea
GitHub-Pull-Request: golang/go#62374
Reviewed-on: https://go-review.googlesource.com/c/go/+/524356 Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Rob Pike <r@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Jes Cok [Wed, 30 Aug 2023 04:57:57 +0000 (04:57 +0000)]
all: use io.{SeekStart, SeekCurrent, SeekEnd}
Currently we include these symbols in bootstrap code.
Change-Id: I19b504237b0344f0e87cda0fbe651811c72daba1
GitHub-Last-Rev: 5134baec387659c5e2ca8c4fc65a5e73c07f00ce
GitHub-Pull-Request: golang/go#62368
Reviewed-on: https://go-review.googlesource.com/c/go/+/524258
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: qiulaidongfeng <2645477756@qq.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Andy Pan [Tue, 5 Sep 2023 11:32:49 +0000 (19:32 +0800)]
log/slog: use the general regex expression of datetime in TestPanics
When I added this test in CL 514135, I missed the timeRE,
we should use it to make this test more precise.
Change-Id: I486f8e8bbbc3a17166107ef361d242ddf4ea2928
Reviewed-on: https://go-review.googlesource.com/c/go/+/525556
Run-TryBot: Andy Pan <panjf2000@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Jonathan Amsterdam <jba@google.com>
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Michael Anthony Knyszek [Thu, 3 Aug 2023 20:53:52 +0000 (20:53 +0000)]
runtime: always lock OS thread in debugcall
Right now debuggers like Delve rely on the new goroutine created to run
a debugcall function to run on the same thread it started on, up until
it hits itself with a SIGINT as part of the debugcall protocol.
That's all well and good, except debugCallWrap1 isn't particularly
careful about not growing the stack. For example, if the new goroutine
happens to have a stale preempt flag, then it's possible a stack growth
will cause a roundtrip into the scheduler, possibly causing the
goroutine to switch to another thread.
Previous attempts to just be more careful around debugCallWrap1 were
helpful, but insufficient. This change takes everything a step further
and always locks the debug call goroutine and the new goroutine it
creates to the OS thread.
For #61732.
Change-Id: I038f3a4df30072833e27e6a5a1ec01806a32891f
Reviewed-on: https://go-review.googlesource.com/c/go/+/515637
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alessandro Arzilli <alessandro.arzilli@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com>