Russ Cox [Thu, 22 Jun 2017 19:49:42 +0000 (15:49 -0400)]
cmd/go: require -buildmode=c-shared to take one main package
The current behavior is to filter out the non-main packages silently,
which is confusing if there are only non-main packages.
Instead, report an error unless it's used with a single main package.
To be clear, I don't really know what I'm doing.
It might be that multiple main packages are allowed, or even
that we do want the filtering, but all.bash passes with this change,
so I am taking that as a sign that we don't need that extra flexibility.
Fixes #15082.
Change-Id: I984d0f444a01c0ee0c3cd6646a75527ea99a9ebe
Reviewed-on: https://go-review.googlesource.com/46421
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Tue, 6 Jun 2017 02:12:34 +0000 (11:12 +0900)]
net: update documentation on IP.IsUnspecified
Fixes #19344.
Change-Id: Ic6fc7485cb50bfae99fda69d0cd9c4ae434af4c3
Reviewed-on: https://go-review.googlesource.com/44910 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Tue, 6 Jun 2017 04:33:01 +0000 (13:33 +0900)]
net: update documentation on methods of IPConn
This change simplifies the documentation on methods of IPConn and adds
a reference to golang.org/x/net/ipv{4,6} packages to the documentation
on {Read,Write}MsgIP methods.
Change-Id: Ie07a853288940e0fef6a417ffc8d0c3d444c21cd
Reviewed-on: https://go-review.googlesource.com/44911
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Tue, 6 Jun 2017 04:35:39 +0000 (13:35 +0900)]
net: update documentation on methods of UDPConn
This change simplifies the documentation on methods of UDPConn and
adds a reference to golang.org/x/net/{ipv4,ipv6} packages to the
documentation on {Read,Write}MsgUDP methods.
Change-Id: I425a8d81bc46b6579aa9f89faa4982bb86b40f24
Reviewed-on: https://go-review.googlesource.com/44912
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:29:26 +0000 (17:29 +0900)]
net: update documentation on JoinHostPort and SplitHostPort
This change adds a reference to the Dial to clarify the parameters and
return values.
Change-Id: I611b9a79f4033ef035acd7098aea5965905d9a4c
Reviewed-on: https://go-review.googlesource.com/34880 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:28:01 +0000 (17:28 +0900)]
net: update documentation on Resolve{TCP,UDP,IP,Unix}Addr
This change clarifies the documentation on
Resolve{TCP,UDP,IP,Unix}Addr to avoid unnecessary confusion about how
the arguments are used to make end point addresses.
Also replaces "name" or "hostname" with "host name" when the term
implies the use of DNS.
Updates #17613.
Change-Id: Id6be87fe2e4666eecd5b92f18ad8b9a6c50a2bd6
Reviewed-on: https://go-review.googlesource.com/34879 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:22:34 +0000 (17:22 +0900)]
net: update documentation on Listen{TCP,UDP,MulticastUDP,IP,Unix,Unixgram}
This change clarifies the documentation on
Listen{TCP,UDP,MulticastUDP,IP,Unix,Unixgram} to avoid unnecessary
confusion about how the arguments for the connection setup functions
are used to make connections.
Change-Id: Ie269453ef49ec2db893391dc3ed2f7b641c14249
Reviewed-on: https://go-review.googlesource.com/34878 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:18:20 +0000 (17:18 +0900)]
net: update documentation on Dial{TCP,UDP,IP,Unix}
This change clarifies the documentation on Dial{TCP,UDP,IP,Unix} to
avoid unnecessary confusion about how the arguments for the connection
setup functions are used to make connections.
Change-Id: I2e378182948fbe221f6ae786ab55e77ae90c3f3b
Reviewed-on: https://go-review.googlesource.com/34877 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:16:46 +0000 (17:16 +0900)]
net: update documentation on Listen and ListenPacket
This change clarifies the documentation on Listen and ListenPacket to
avoid unnecessary confusion about how the arguments for the connection
setup functions are used to make connections.
Also replaces "name" or "hostname" with "host name" when the term
implies the use of DNS.
Change-Id: I0bad2e143207666f2358d397fc076548ee6c3ae9
Reviewed-on: https://go-review.googlesource.com/34876 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mikio Hara [Sun, 8 Jan 2017 08:15:54 +0000 (17:15 +0900)]
net: update documentation on Dial and its variants
This change clarifies the documentation on Dial and its variants to
avoid unnecessary confusion about how the arguments for the connection
setup functions are used to make connections.
Also replaces "name" or "hostname" with "host name" when the term
implies the use of DNS.
Change-Id: I6adb3f2ae04a3bf83b96016ed73d8e59926f3e8a
Reviewed-on: https://go-review.googlesource.com/34875 Reviewed-by: Ian Lance Taylor <iant@golang.org>
David Chase [Wed, 21 Jun 2017 21:19:24 +0000 (17:19 -0400)]
cmd/compile: make loop guard+rotate conditional on GOEXPERIMENT
Loops of the form "for i,e := range" needed to have their
condition rotated to the "bottom" for the preemptible loops
GOEXPERIMENT, but this caused a performance regression
because it degraded bounds check removal. For now, make
the loop rotation/guarding conditional on the experiment.
Fixes #20711.
Updates #10958.
Change-Id: Icfba14cb3b13a910c349df8f84838cf4d9d20cf6
Reviewed-on: https://go-review.googlesource.com/46410
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
John R. Lenton [Sat, 20 May 2017 16:22:36 +0000 (17:22 +0100)]
runtime, syscall: workaround for bug in Linux's execve
Linux's execve has (at the time of writing, and since v2.6.30) a bug when it ran
concurrently with clone, in that it would fail to set up some datastructures if
the thread count before and after some steps differed. This is described better
and in more detail by Colin King in Launchpad¹ and kernel² bugs. When a program
written in Go runtime.Exec's a setuid binary, this issue may cause the resulting
process to not have the expected uid. This patch works around the issue by using
a mutex to serialize exec and clone.
Change-Id: I126e87d1d9ce3be5ea4ec9c7ffe13f92e087903d
Reviewed-on: https://go-review.googlesource.com/43713 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Change-Id: I11e864eff9980dec8247c47e4c600f76602e7ada
Reviewed-on: https://go-review.googlesource.com/46092 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Brad Fitzpatrick [Mon, 19 Jun 2017 19:06:08 +0000 (19:06 +0000)]
A+C: updated update
I updated my tool to deal with Github-only contributors without Gerrit
accounts. The "dep" repo is the main source of these, although there
are a few others.
Add Alexander Kauer (individual CLA)
Add Anders Pearson (individual CLA)
Add Brad Whitaker (corporate CLA for Fastly, Inc.)
Add Daisuke Fujita (individual CLA)
Add Daniel Upton (individual CLA)
Add David Volquartz Lebech (individual CLA)
Add Emilien Kenler (individual CLA)
Add Fazal Majid (corporate CLA for Apsalar)
Add Gustav Westling (individual CLA)
Add Henry Chang (individual CLA)
Add Jianqiao Li (corporate CLA for Google Inc.)
Add Jin-wook Jeong (individual CLA)
Add Kaleb Elwert (individual CLA)
Add Kashav Madan (individual CLA)
Add Koki Ide (individual CLA)
Add Konstantin (individual CLA)
Add Kyle Jones (individual CLA)
Add Leon Klingele (individual CLA)
Add Martin Olsen (individual CLA)
Add Máximo Cuadros Ortiz (individual CLA)
Add Miguel Molina (individual CLA)
Add Nathaniel Cook (individual CLA)
Add Neil Lyons (individual CLA)
Add Nick Robinson (individual CLA)
Add Niranjan Godbole (individual CLA)
Add Oleg Bulatov (individual CLA)
Add Oliver Tonnhofer (individual CLA)
Add Paul Querna (individual CLA)
Add Peter Bourgon (individual CLA)
Add Quentin Renard (individual CLA)
Add Ray Tung (individual CLA)
Add Rob Phoenix (individual CLA)
Add Ryan Boehning (individual CLA)
Add Sakeven Jiang (individual CLA)
Add Stephen Searles (individual CLA)
Add Steven Wilkin (individual CLA)
Add Sunny (individual CLA)
Add Ted Kornish (individual CLA)
Add Victor Vrantchan (individual CLA)
Add Wander Lairson Costa (individual CLA)
Add Zakatell Kanda (individual CLA)
Updates #12042
Change-Id: I2e4828cce880965c77b374c1e115d0e437d108c7
Reviewed-on: https://go-review.googlesource.com/46090 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Austin Clements [Tue, 20 Jun 2017 19:59:02 +0000 (15:59 -0400)]
syscall: mark forkAndExecInChild1 noinline
This certainly won't get inlined right now, but in the spirit of
making this more robust, we have to disable inlining because inlining
would defeat the purpose of separating forkAndExecInChild1 into a
separate function.
Austin Clements [Tue, 20 Jun 2017 19:12:12 +0000 (15:12 -0400)]
syscall: use CLONE_VFORK safely
Currently, CLONE_VFORK is used without much regard to the stack. This
is dangerous, because anything the child does to the stack is visible
to the parent. For example, if the compiler were to reuse named stack
slots (which it currently doesn't do), it would be easy for the child
running in the same stack frame as the parent to corrupt local
variables that the parent then depended on. We're not sure of anything
specific going wrong in this code right now, but it is at best a
ticking time bomb.
CLONE_VFORK can only safely be used if we ensure the child does not
execute in any of the active stack frames of the parent. This commit
implements this by arranging for the parent to return immediately from
the frame the child will operate in, and for the child to never return
to the frame the parent will operate in.
Fixes #20732.
Change-Id: Iad5b4ddc2b994c082bd278bfd52ef53bd38c037f
Reviewed-on: https://go-review.googlesource.com/46173
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
Russ Cox [Fri, 16 Jun 2017 18:46:24 +0000 (14:46 -0400)]
testing: harmonize handling of prefix-matched benchmarks
If you have BenchmarkX1 with sub-benchmark Y
and you have BenchmarkX2 with no sub-benchmarks,
then
go test -bench=X/Y
runs BenchmarkX1 once with b.N=1 (to find out about Y)
and then not again, because it has sub-benchmarks,
but arguably also because we're interested in Y.
In contrast, it runs BenchmarkX2 in full, even though clearly
that is not relevant to the match X/Y. We do have to run X2
once with b.N=1 to probe for having X2/Y, but we should not
run it with larger b.N.
Brad Fitzpatrick [Mon, 19 Jun 2017 22:59:56 +0000 (22:59 +0000)]
net/http: update bundled http2
Updates http2 to x/net/http2 git rev 3d7ac2a5d for:
http2: fix Server race
https://golang.org/cl/20704
Fixes #20704
Change-Id: I803288f94a8a462ad0960b0c29c2dfee27b9f1ae
Reviewed-on: https://go-review.googlesource.com/46093
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Tom Bergan <tombergan@google.com> Reviewed-by: Tom Bergan <tombergan@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Ian Lance Taylor [Thu, 15 Jun 2017 23:42:08 +0000 (16:42 -0700)]
runtime: add read/write mutex type
This is a runtime version of sync.RWMutex that can be used by code in
the runtime package. The type is not quite the same, in that the zero
value is not valid.
Robert Griesemer [Fri, 16 Jun 2017 21:48:38 +0000 (14:48 -0700)]
cmd/compile: permit Unicode spaces in (expanded) package paths
This doesn't change the existing restriction with disallows
spaces in import paths (as found in an import declaration).
It simply permits packages to be under a directory name that
may contain spaces.
Verified manually that it works. This could use a test, but the
change is trivial. We also can't use the existing test framework
(under test/) because the way those tests are run with test/run.go,
the mechanims for compiling a directory, even if it contains blanks
it its name, does't produce compiler paths with blanks
(the compilation is local).
Mark Ryan [Fri, 16 Jun 2017 10:34:28 +0000 (11:34 +0100)]
encoding: fix endless loop in TestDecoderBuffering
The ascii85, base32 and base64 packages all contain a test called
TestDecoderBuffering. Each of these tests contain a loop that ignores
the error returned from the Read method of their decoders. The result
being that the tests loop for ever if the decoders actually return an
error. This commit fixes the issue by terminating the loops if an error
occurs and failing the tests with a suitable error message.
Change-Id: Idb385673cf9f3f6f8befe4288b4be366ab0985fd
Reviewed-on: https://go-review.googlesource.com/46010 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Jed Denlea [Thu, 15 Jun 2017 22:53:09 +0000 (15:53 -0700)]
image/gif: fix writeImageBlock with SubImages
If an image has been cropped horizontally, writeImageBlock detects that
its width and Stride differ and acts accordingly.
However, if an image has been cropped vertically, trimming from the
bottom, the whole original image will be written in place. This results
in more data in the LZW stream than necessary, and many decoders
including image/gif's itself will fail to load.
Fixes #20692
Change-Id: Id332877e31bcf3729c89d8a50c1be0464028d82e
Reviewed-on: https://go-review.googlesource.com/45972
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Nigel Tao <nigeltao@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Nigel Tao <nigeltao@golang.org>
Brad Fitzpatrick [Thu, 15 Jun 2017 23:18:14 +0000 (23:18 +0000)]
A+C: automated update
Add Adam Eijdenberg (individual CLA)
Add Agis Anastasopoulos (individual CLA)
Add Alexander Guz (individual CLA)
Add Alexander Kucherenko (individual CLA)
Add Alexander Polcyn (corporate CLA for Google Inc.)
Add Alexis Hildebrandt (individual CLA)
Add Alexis Hunt (corporate CLA for Google Inc.)
Add Andrew Jackura (corporate CLA for Google Inc.)
Add Anthony Voutas (individual CLA)
Add Antoine Martin (individual CLA)
Add Antonio Troina (individual CLA)
Add Bill Prin (corporate CLA for Google Inc.)
Add Brad Jones (corporate CLA for Google Inc.)
Add Chris Raynor (corporate CLA for Google Inc.)
Add Chris Roche (individual CLA)
Add Daker Fernandes Pinheiro (corporate CLA for Intel Corporation)
Add Dave MacFarlane (individual CLA)
Add Derek McGowan (individual CLA)
Add Di Xiao (corporate CLA for Google Inc.)
Add Doug Fawley (corporate CLA for Google Inc.)
Add Eric Chiang (individual CLA)
Add Eyal Posener (individual CLA)
Add Fabian Zaremba (individual CLA)
Add Fredrik Forsmo (individual CLA)
Add Hang Qian (individual CLA)
Add Hsin Tsao (corporate CLA for Google Inc.)
Add James Cowgill (individual CLA)
Add James Hartig (individual CLA)
Add James Myers (individual CLA)
Add Jason Chu (individual CLA)
Add Jay Conrod (corporate CLA for Google Inc.)
Add Jeff (Zhefu) Jiang (corporate CLA for Google Inc.)
Add Jeffrey H (individual CLA)
Add Jianing Yu (corporate CLA for Google Inc.)
Add Josh Deprez (individual CLA)
Add Julian Pastarmov (corporate CLA for Google Inc.)
Add Kai Trukenmüller (individual CLA)
Add Kim Yongbin (individual CLA)
Add Kodie Goodwin (individual CLA)
Add Lev Shamardin (individual CLA)
Add Lucas Bremgartner (individual CLA)
Add Ludi Rehak (individual CLA)
Add Lukasz Milewski (individual CLA)
Add Magnus Hiie (corporate CLA for Teleport Inc.)
Add Marko Mudrinic (individual CLA)
Add Martin Habbecke (corporate CLA for Google Inc.)
Add Martin Hoefling (individual CLA)
Add Martin Probst (individual CLA)
Add Masahiro Furudate (individual CLA)
Add Masahiro Wakame (individual CLA)
Add Masaki Yoshida (individual CLA)
Add Mathias Hall-Andersen (individual CLA)
Add Maxime de Roucy (individual CLA)
Add Nathan Humphreys (individual CLA)
Add Neuman Vong (individual CLA)
Add Pablo Lalloni (individual CLA)
Add Pavlo Sumkin (individual CLA)
Add Peter Morjan (individual CLA)
Add Piers (individual CLA)
Add Qiuxuan Zhu (individual CLA)
Add Richard Dingwall (individual CLA)
Add Rick Sayre (individual CLA)
Add Sascha Brawer (individual CLA)
Add Sergey Mishin (individual CLA)
Add Spencer Tung (corporate CLA for Google Inc.)
Add Steven Erenst (individual CLA)
Add Thomas Bouldin (corporate CLA for Google Inc.)
Add Tobias Klauser (individual CLA)
Add Tonis Tiigi (individual CLA)
Add Trung Nguyen (individual CLA)
Add Vikas Kedia (corporate CLA for Google Inc.)
Add Vladimir Varankin (individual CLA)
Add Yestin Sun (individual CLA)
Add acoshift (individual CLA)
Updates #12042
Change-Id: I5e3ba25f310fc89ae391e5abb308e137d56c9148
Reviewed-on: https://go-review.googlesource.com/45990 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Ian Lance Taylor [Thu, 15 Jun 2017 02:55:40 +0000 (19:55 -0700)]
net: handle spurious netpoll wakeups in connect
In some cases the netpoll code can cause a spurious wakeup. This is
normally harmless, as the woken up code simply retries the operation.
However, for connect, the test we were using to see whether the
connect had succeeded (setsockopt(SO_ERROR)) was not reliable in the
case of a spurious wakeup. Change to using a reliable test (getpeername).
On Darwin we used a different technique: a second call to connect;
change Darwin to use getpeername as well.
Return the result of getpeername to avoid having to call it twice.
Fixes #19289.
Change-Id: I119ec8e7a41f482f1e590d4c65a37f6103fa22d9
Reviewed-on: https://go-review.googlesource.com/45815
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Marko Mudrinic [Thu, 15 Jun 2017 17:15:47 +0000 (19:15 +0200)]
cmd/go: improve documentation on defaults for get
The existing docs states that, get looks for a branch or tag
that matches the locally installed version of Go.
First, this is only working for "go1", so it could be confusing.
Second, "If no such version exists it retrieves the most recent
version of the package". It's more the default branch, by git defaults,
rather than most recent version.
This should address the potential unclear parts.
Fixes #20320
Change-Id: Id7d727d88dc350c9902974b64fa28c3766f7e245
Reviewed-on: https://go-review.googlesource.com/45890 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Brad Fitzpatrick [Thu, 15 Jun 2017 19:32:36 +0000 (19:32 +0000)]
net/http: add a known goroutine, don't check goroutine leaks in benchmark mode
Change-Id: I8aa070f8093e80ba19f0546d7447caf847a2b388
Reviewed-on: https://go-review.googlesource.com/45912 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mark Ryan [Thu, 15 Jun 2017 10:22:48 +0000 (11:22 +0100)]
encoding: report correct line numbers in tests
Some of the _test.go files in the encoding packages contain a private
function called testEqual that calls testing.Errorf if the arguments
passed to it are unequal. The line numbers output by such calls to
Errorf identify the failure as being in testEqual itself which is not
very useful. This commit fixes the problem by adding a call to the
new t.Helper method in each of the testEqual functions. The line
numbers output when errors do occur now identify the real source of
the error.
Vladimir Stefanovic [Thu, 15 Jun 2017 14:59:16 +0000 (16:59 +0200)]
runtime: enable GDB tests on mips64 (except TestGdbPythonCgo)
They were failing when run on 32bit RFS, with 32bit gdb.
(mips64 builder now has 64bit RFS, with gdb 7.9.)
Leaving TestGdbPythonCgo disabled, it behaves as described in #18784.
Brad Fitzpatrick [Thu, 15 Jun 2017 02:17:31 +0000 (02:17 +0000)]
doc: fix typo in Go 1.9 release notes
Change-Id: I78443d5874a7667fbac78eac188d402227373da3
Reviewed-on: https://go-review.googlesource.com/45813 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Matthew Dempsky [Thu, 15 Jun 2017 02:57:11 +0000 (19:57 -0700)]
cmd/compile: fix exporting of function bodies
Before CL 36170, we identified all function bodies that needed to be
exported before writing any export data.
With CL 36170, we started identifying additional functions while
exporting function bodies. As a consequence, we cannot use a
range-based for loop for iterating over function bodies anymore.
Fixes #18895.
Change-Id: I9cbefa8d311ca8c9898c8272b2ac365976b02396
Reviewed-on: https://go-review.googlesource.com/45817
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
Kale Blankenship [Thu, 15 Jun 2017 00:39:03 +0000 (17:39 -0700)]
cmd/pprof: restore printing descriptive errors from net/http/pprof endpoints
Restores functionality added in https://golang.org/cl/35564/ which was
lost in https://golang.org/cl/36798/ by the addition of the custom
fetcher to src/cmd/pprof/pprof.go. The custom fetcher overrides the
upstream default.
Brad Fitzpatrick [Wed, 14 Jun 2017 23:53:20 +0000 (23:53 +0000)]
doc: flesh out tools section in Go 1.9 release notes
I thought I was almost done, but had forgot the tools section, hidden
in comments.
Move the comments to a <pre> block, so it's visible in the HTML.
Updates #20587
Change-Id: I1dc22c63d9ee297e44bbb742f03b4a722247dbe8
Reviewed-on: https://go-review.googlesource.com/45811 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Brad Fitzpatrick [Wed, 14 Jun 2017 23:17:30 +0000 (23:17 +0000)]
doc: add more Go 1.9 release notes
Only one TODO remains, for pprof changes.
Updates #20587
Change-Id: Ib67b23adc7851cc96455b0c20649c8e565a4f92a
Reviewed-on: https://go-review.googlesource.com/45810 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Robert Griesemer [Wed, 14 Jun 2017 21:03:46 +0000 (14:03 -0700)]
cmd/compile: fix detection of calls to reflect.Method
The existing code used Type.String() to obtain the name of a type;
specifically type reflect.Method in this case. However, Type.String()
formatting is intended for error messages and uses the format
pkgpath.name instead of pkgname.name if a package (in this case
package reflect) is imported multiple times. As a result, the
reflect.Method type detection failed under peculiar circumstances
(see the included test case).
Thanks to https://github.com/ericlagergren for tracking down
an easy way to make the bug disappear (which in turn directly
led to the underlying cause).
Brad Fitzpatrick [Wed, 14 Jun 2017 18:06:32 +0000 (18:06 +0000)]
A+C: automated update
Add Adam Bender (corporate CLA for Google Inc.)
Add Ahmet Alp Balkan (corporate CLA for Google Inc.)
Add Aishraj Dahal (individual CLA)
Add Alexey Neganov (individual CLA)
Add Andrew Benton (individual CLA)
Add Bartosz Grzybowski (individual CLA)
Add Ben Shi (individual CLA)
Add Brandon Bennett (corporate CLA for Facebook, Inc.)
Add Brian Starke (individual CLA)
Add Bulat Gaifullin (individual CLA)
Add Carl Henrik Lunde (individual CLA)
Add Carlisia Campos (individual CLA)
Add Carlo Alberto Ferraris (individual CLA)
Add Carolyn Van Slyck (individual CLA)
Add Chew Choon Keat (individual CLA)
Add Chris Biscardi (individual CLA)
Add Damien Lespiau (corporate CLA for Intel Corporation)
Add David NewHamlet (individual CLA)
Add Dieter Plaetinck (corporate CLA for RainTank)
Add Dominic Green (individual CLA)
Add Eitan Adler (individual CLA)
Add Evgeniy Polyakov (individual CLA)
Add Ewan Valentine (individual CLA)
Add Fangming Fang (corporate CLA for ARM Ltd.)
Add Felipe Oliveira (individual CLA)
Add Filip Gruszczyński (individual CLA)
Add Gengliang Wang (individual CLA)
Add George Gkirtsou (individual CLA)
Add Gregory Man (individual CLA)
Add Hauke Löffler (individual CLA)
Add Heschi Kreinick (corporate CLA for Google Inc.)
Add Hongfei Tan (individual CLA)
Add Hugues Bruant (individual CLA)
Add Ibrahim AshShohail (individual CLA)
Add James Neve (individual CLA)
Add James Smith (individual CLA)
Add Jamie Stackhouse (individual CLA)
Add Jan Berktold (individual CLA)
Add Jeff Johnson (corporate CLA for Google Inc.)
Add Joe Richey (corporate CLA for Google Inc.)
Add Johan Brandhorst (individual CLA)
Add Jonathan Stacks (individual CLA)
Add Jordan Krage (individual CLA)
Add Josselin Costanzi (individual CLA)
Add Joël Stemmer (corporate CLA for Google Inc.)
Add Julio Montes (corporate CLA for Intel Corporation)
Add Kamil Chmielewski (individual CLA)
Add Karoly Negyesi (individual CLA)
Add Keiji Yoshida (individual CLA)
Add Kirill Smelkov (corporate CLA for Nexedi)
Add Koichi Shiraishi (individual CLA)
Add Kris Nova (individual CLA)
Add Kyrylo Silin (individual CLA)
Add Lars Jeppesen (individual CLA)
Add Lars Wiegman (individual CLA)
Add Laurie Clark-Michalek (individual CLA)
Add Lion Yang (individual CLA)
Add Lorenzo Masini (individual CLA)
Add Lucas Clemente (corporate CLA for Google Inc.)
Add Marcelo E. Magallon (individual CLA)
Add Mark Adams (individual CLA)
Add Mark Harrison (corporate CLA for Google Inc.)
Add Mark Ryan (corporate CLA for Intel Corporation)
Add Martin Lindhe (individual CLA)
Add Marwan Sulaiman (individual CLA)
Add Matt Blair (individual CLA)
Add Matt Harden (individual CLA)
Add Matt Strong (individual CLA)
Add Mike Wiacek (corporate CLA for Google Inc.)
Add Milutin Jovanović (individual CLA)
Add Monis Khan (corporate CLA for Red Hat, Inc.)
Add Mostyn Bramley-Moore (individual CLA)
Add Mura Li (individual CLA)
Add Máté Gulyás (individual CLA)
Add Nathan Caza (individual CLA)
Add Nicholas Maniscalco (individual CLA)
Add Nick Kubala (corporate CLA for Google Inc.)
Add Nick Miyake (individual CLA)
Add Niklas Schnelle (individual CLA)
Add Patrick Pelletier (individual CLA)
Add Paul Jolly (individual CLA)
Add Paulo Flabiano Smorigo (corporate CLA for IBM)
Add Peter Nguyen (individual CLA)
Add Pravendra Singh (individual CLA)
Add Raymond Kazlauskas (individual CLA)
Add Remi Gillig (individual CLA)
Add Sam Boyer (individual CLA)
Add Sean Chittenden (corporate CLA for Joyent, Inc.)
Add Sean Christopherson (corporate CLA for Intel Corporation)
Add Shintaro Kaneko (individual CLA)
Add Takuto Ikuta (corporate CLA for Google Inc.)
Add Thomas Bonfort (individual CLA)
Add Toshiki Shima (individual CLA)
Add Trey Roessig (individual CLA)
Add Wade Simmons (individual CLA)
Add Wei Xiao (corporate CLA for ARM Ltd.)
Add Weichao Tang (individual CLA)
Add Will Storey (individual CLA)
Add Wu Yunzhou (individual CLA)
Add Xu Fee (individual CLA)
Add Zach Bintliff (individual CLA)
Add Zak (individual CLA)
Add Zellyn Hunter (corporate CLA for Square, Inc.)
Add Максим Федосеев (individual CLA)
Add 张嵩 (individual CLA)
Updates #12042
Change-Id: I43922a9489828e519e480f8fc1abc92863e0abcc
Reviewed-on: https://go-review.googlesource.com/45770 Reviewed-by: Ian Lance Taylor <iant@golang.org>
thoeni [Thu, 1 Dec 2016 21:57:39 +0000 (21:57 +0000)]
encoding/json: don't marshal unexported embedded fields of non struct type
Marshal must process unexported embedded fields of struct type,
looking for exported fields in those structs. However, it must
not process unexported embedded fields of non-struct type.
For example, consider:
type t1 struct {
X int
}
type t2 int
type T struct {
t1
t2
}
When considering T, Marshal must process t1 to find t1.X.
Marshal must not process t2, but it was. Fix that.
Brad Fitzpatrick [Wed, 14 Jun 2017 06:16:49 +0000 (06:16 +0000)]
sync: make another attempt at clarifying RWMutex double RLock rules
Updates #15418 (the original bug, fixed by https://golang.org/cl/23570)
Fixes #19460 (round two)
Change-Id: Iac4447daabb56e3b470046c489c22d588c20163e
Reviewed-on: https://go-review.googlesource.com/45697 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Brad Fitzpatrick [Wed, 14 Jun 2017 06:37:55 +0000 (06:37 +0000)]
time: unify the Time.Equals vs == pitfall documentation
Fixes #19510 (good details therein)
Change-Id: Id28b66d91435d839fd79eeed486527cc77257c12
Reviewed-on: https://go-review.googlesource.com/45698 Reviewed-by: Ian Lance Taylor <iant@golang.org>
Ian Lance Taylor [Thu, 25 May 2017 22:12:54 +0000 (15:12 -0700)]
cmd/cgo: match note following error in compiler errors
With current GCC a macro that refers to another macro can report an
error on the macro definition line, with a note on the use.
When cgo is trying to decide which line an error refers to,
it is looking at the uses. So if we see an error on a line that we
don't recognize followed by a note on a line that we do recognize,
treat the note as an error.
Fixes #20125.
Change-Id: I389cd0eb7d56ad2d54bef70e278d9f76c4d36448
Reviewed-on: https://go-review.googlesource.com/44290
Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Hiroshi Ioka <hirochachacha@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
Samuel Tan [Thu, 11 May 2017 23:56:14 +0000 (16:56 -0700)]
html/template: only search identifier nodes for predefined escapers
Predefined escapers (i.e. "html" and "urlquery") should only occur in
Identifier nodes, and never in Field or Chain nodes, since these are
global functions that return string values (see inline comments for more
details). Therefore, skip Chain and Field nodes when searching for
predefined escapers in template pipelines.
Also, make a non-functional change two existing test cases to avoid
giving the impression that it is valid to reference a field of a
predefined escaper.
Fixes #20323
Change-Id: I34f722f443c778699fcdd575dc3e0fd1fd6f2eb3
Reviewed-on: https://go-review.googlesource.com/43296 Reviewed-by: Samuel Tan <samueltan@google.com> Reviewed-by: Mike Samuel <mikesamuel@gmail.com> Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Austin Clements [Wed, 14 Jun 2017 15:07:24 +0000 (11:07 -0400)]
runtime: record mutex event before readying
Currently, semrelease1 readies the next waiter before recording a
mutex event. However, if the next waiter is expecting to look at the
mutex profile, as is the case in TestMutexProfile, this may delay
recording the event too much.
Swap the order of these operations so semrelease1 records the mutex
event before readying the next waiter. This also means readying the
next waiter is the very last thing semrelease1 does, which seems
appropriate.
Lynn Boger [Thu, 8 Jun 2017 12:26:19 +0000 (08:26 -0400)]
cmd/link: implement trampolines for ppc64le with ext linking
When using golang on ppc64le there have been issues
when building executables that generate extremely large text
sections. This is due to the call instruction and the limitation
on the offset field, which is smaller than most platforms. If the
size of the call target offset is too big for the offset field in
the call instruction, then link errors can occur.
The original solution to this problem in golang was to split the
text section when it became too large, allowing the external (GNU)
linker to insert the necessary stub to handle the long call. That
worked fine until the another size limit for the program size was hit,
where a plt_branch was created instead of a long branch. In that case
the plt_branch code sequence expects r2 to contain the address of the
TOC, but when golang creates dynamic executables by default
(-buildmode=exe) r2 does not always contain the address of the TOC
and as a result when building programs that reach this extremely
large size, a runtime SEGV or SIGILL can occur due to branching to a bad
address.
When using internal linking, trampolines are generated to handle the
long calls but the text sections are not split. With this change,
text sections will still be split approrpriately with external linking
but if the buildmode being used does not maintain r2 as the TOC
addresses, then trampolines will be created for those calls.
Ian Lance Taylor [Tue, 13 Jun 2017 05:36:03 +0000 (22:36 -0700)]
runtime, syscall: reset signal handlers to default in child
Block all signals during a fork. In the parent process, after the
fork, restore the signal mask. In the child process, reset all
currently handled signals to the default handler, and then restore the
signal mask.
The effect of this is that the child will be operating using the same
signal regime as the program it is about to exec, as exec resets all
non-ignored signals to the default, and preserves the signal mask.
We do this so that in the case of a signal sent to the process group,
the child process will not try to run a signal handler while in the
precarious state after a fork.
Fixes #18600.
Change-Id: I9f39aaa3884035908d687ee323c975f349d5faaa
Reviewed-on: https://go-review.googlesource.com/45471
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
Alan Donovan [Fri, 16 Dec 2016 18:44:14 +0000 (13:44 -0500)]
go/token: use fine-grained locking in FileSet
Before, all accesses to the lines and infos tables of each File were
serialized by the lock of the owning FileSet, causing parsers running
in parallel to contend. Now, each File has its own mutex.
This fixes a data race in (*File).PositionFor, which used to call
f.position then f.unpack without holding the mutex's lock.
Brad Fitzpatrick [Tue, 13 Jun 2017 20:24:43 +0000 (20:24 +0000)]
doc: add more Go 1.9 notes
Updates #20587
Change-Id: I7effe922242db45f3ce74882d07511aaaac2f634
Reviewed-on: https://go-review.googlesource.com/45613 Reviewed-by: Ian Lance Taylor <iant@golang.org>
I was surprised to see readvarint show up in a cpu profile.
Use a few simple optimizations to speed up stack copying:
* Avoid making a copy of the cache.entries array or any of its elements.
* Use a shift instead of a signed division in stackmapdata.
* Change readvarint to return the number of bytes consumed
rather than an updated slice.
* Make some minor optimizations to readvarint to help the compiler.
* Avoid called readvarint when the value fits in a single byte.
The first and last optimizations are the most significant,
although they all contribute a little.
Add a benchmark for stack copying that includes lots of different
functions in a recursive loop, to bust the cache.
This might speed up other runtime operations as well;
I only benchmarked stack copying.
name old time/op new time/op delta
StackCopy-8 96.4ms ± 2% 82.7ms ± 1% -14.24% (p=0.000 n=20+19)
StackCopyNoCache-8 167ms ± 1% 131ms ± 1% -21.58% (p=0.000 n=20+20)
Austin Clements [Tue, 13 Jun 2017 15:14:43 +0000 (11:14 -0400)]
runtime: move pdesc into p
There are currently two arrays indexed by P ID: allp and pdesc.
Consolidate these by moving the pdesc fields into type p so they can
be indexed off allp along with all other per-P state.
Austin Clements [Tue, 13 Jun 2017 20:19:16 +0000 (16:19 -0400)]
runtime: increase MaxGomaxprocs to 1024
Currently MaxGomaxprocs is 256. The previous CL saved enough per-P
static space that we can quadruple MaxGomaxprocs (and hence the static
size of allp) and still come out ahead.
This is safe for Go 1.9. In Go 1.10 we'll eliminate the hard-coded
limit entirely.
Pravendra Singh [Tue, 13 Jun 2017 16:43:07 +0000 (22:13 +0530)]
reflect: prevent structs with invalid field name
According to the language spec, a struct field name should
be an identifier.
identifier = letter { letter | unicode_digit } .
letter = unicode_letter | "_" .
Implements a function 'isValidFieldName(fieldName string) bool'.
To check if the field name is a valid identifier or not.
It will panic if the field name is invalid.
It uses the non-exported function implementation 'isLetter'
from the package 'scanner', used to parse an identifier.