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Commit Graph

28609 Commits

Author SHA1 Message Date
Ian Lance Taylor
55559f159e doc/go1.7.html: html tidy
Change-Id: I0e07610bae641cd63769b520089f5d854d796648
Reviewed-on: https://go-review.googlesource.com/23770
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2016-06-03 20:51:17 +00:00
Stephen McQuay (smcquay)
adf261b7d6 cmd/go: match go-import package prefixes by slash
The existing implementation for path collision resolution would
incorrectly determine that:

    example.org/aa

collides with:

    example.org/a

This change splits by slash rather than comparing on a byte-by-byte
basis.

Fixes: #15947

Change-Id: I18b3aaafbc787c81253203cf1328bb3c4420a0c4
Reviewed-on: https://go-review.googlesource.com/23732
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2016-06-03 19:47:37 +00:00
David Crawshaw
4b64c53c03 reflect: clear tflag for StructOf type
Fixes #15923

Change-Id: I3e56564365086ceb0bfc15db61db6fb446ab7448
Reviewed-on: https://go-review.googlesource.com/23760
Reviewed-by: Sebastien Binet <seb.binet@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-03 19:01:03 +00:00
Ian Lance Taylor
cf862478c8 runtime/cgo: add TSAN locks around mmap call
Change-Id: I806cc5523b7b5e3278d01074bc89900d78700e0c
Reviewed-on: https://go-review.googlesource.com/23736
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2016-06-03 18:26:01 +00:00
Ian Lance Taylor
b4c7f6280e doc/go1.7.html: add missing <code> and </a>
Change-Id: I5f4bf89345dc139063dcf34da653e914386bcde6
Reviewed-on: https://go-review.googlesource.com/23735
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-03 17:09:56 +00:00
Ian Lance Taylor
6901b08482 cmd/link: avoid name collision with DWARF .def suffix
Adding a .def suffix for DWARF info collided with the DWARF info,
without the suffix, for a method named def. Change the suffix to ..def
instead.

Fixes #15926.

Change-Id: If1bf1bcb5dff1d7f7b79f78e3f7a3bbfcd2201bb
Reviewed-on: https://go-review.googlesource.com/23733
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-06-03 16:56:29 +00:00
Mikio Hara
c3bd93aa26 net: don't leak test helper goroutine in TestAcceptTimeout
Fixes #15109.

Change-Id: Ibfdedd6807322ebec84bacfeb492fb53fe066960
Reviewed-on: https://go-review.googlesource.com/23742
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
2016-06-03 11:39:40 +00:00
Marcel van Lohuizen
9e112a3fe4 bytes: use Run method for benchmarks
Change-Id: I34ab1003099570f0ba511340e697a648de31d08a
Reviewed-on: https://go-review.googlesource.com/23427
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-06-03 07:03:03 +00:00
Michael Hudson-Doyle
26849746c9 cmd/internal/obj, runtime: fixes for defer in 386 shared libraries
Any defer in a shared object crashed when GOARCH=386. This turns out to be two
bugs:

 1) Calls to morestack were not processed to be PIC safe (must have been
    possible to trigger this another way too)
 2) jmpdefer needs to rewind the return address of the deferred function past
    the instructions that load the GOT pointer into BX, not just past the call

Bug 2) requires re-introducing the a way for .s files to know when they are
being compiled for dynamic linking but I've tried to do that in as minimal
a way as possible.

Fixes #15916

Change-Id: Ia0d09b69ec272a176934176b8eaef5f3bfcacf04
Reviewed-on: https://go-review.googlesource.com/23623
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-03 02:50:27 +00:00
Andrew Gerrand
5799973c3e cmd/go: fix staleness test for releases, also deflake it
Fixes #15933

Change-Id: I2cd6365e6d0ca1cafdc812fbfaaa55aa64b2b289
Reviewed-on: https://go-review.googlesource.com/23731
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-03 02:46:58 +00:00
Ian Lance Taylor
7825ca6a63 doc/go1.7.html: net/mail.ParseAddress is stricter
Fixes #15940.

Change-Id: Ie6da6fef235c6a251caa96d45f606c05d118a0ac
Reviewed-on: https://go-review.googlesource.com/23710
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Travis Beatty <travisby@gmail.com>
Reviewed-by: Andrew Gerrand <adg@golang.org>
2016-06-03 01:48:45 +00:00
David Glasser
92cd6e3af9 encoding/json: fix docs on valid key names
This has been inaccurate since https://golang.org/cl/6048047.

Fixes #15317.

Change-Id: If93d2161f51ccb91912cb94a35318cf33f4d526a
Reviewed-on: https://go-review.googlesource.com/23691
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-03 00:40:59 +00:00
Mikio Hara
49c680f948 syscall: deflake TestUnshare
Change-Id: I21a08c2ff5ebb74e158723cca323574432870ba8
Reviewed-on: https://go-review.googlesource.com/23662
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 22:26:03 +00:00
Marcel van Lohuizen
0f5697a81d strconv: use Run for some benchmarks
This serves as an example of table-driven benchmarks which are analoguous to the common pattern for table-driven tests.

Change-Id: I47f94c121a7117dd1e4ba03b3f2f8bcb5da38063
Reviewed-on: https://go-review.googlesource.com/23470
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-06-02 20:47:29 +00:00
Ian Lance Taylor
03abde4971 runtime: only permit SetCgoTraceback to be called once
Accept a duplicate call, but nothing else.

Change-Id: Iec24bf5ddc3b0f0c559ad2158339aca698601743
Reviewed-on: https://go-review.googlesource.com/23692
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 19:24:55 +00:00
Ian Lance Taylor
88e0ec2979 runtime/cgo: avoid races on cgo_context_function
Change-Id: Ie9e6fda675e560234e90b9022526fd689d770818
Reviewed-on: https://go-review.googlesource.com/23610
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 18:47:48 +00:00
Alexander Morozov
853cd1f4a6 syscall: call setgroups for no groups on GNU/Linux
Skip setgroups only for one particular case: GidMappings != nil and
GidMappingsEnableSetgroup == false and list of supplementary groups is
empty.
This patch returns pre-1.5 behavior for simple exec and still allows to
use GidMappings with non-empty Credential.

Change-Id: Ia91c77e76ec5efab7a7f78134ffb529910108fc1
Reviewed-on: https://go-review.googlesource.com/23524
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 17:21:34 +00:00
Steve Phillips
e90a49a0f5 doc/go1.7.html: typo fix; replace "," at end of sentence with "."
Signed-off-by: Steven Phillips <steve@tryingtobeawesome.com>

Change-Id: Ie7c3253a5e1cd43be8fa12bad340204cc6c5ca76
Reviewed-on: https://go-review.googlesource.com/23677
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-02 15:44:24 +00:00
Alberto Donizetti
04888c9770 doc/go1.7: fix typo in nsswitch.conf name
Fixes #15939

Change-Id: I120cbeac73a052fb3f328774e6d5e1534f11bf6b
Reviewed-on: https://go-review.googlesource.com/23682
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-02 15:26:44 +00:00
Sebastien Binet
905ced0e6a reflect: document StructOf embedded fields limitation
This CL documents that StructOf currently does not generate wrapper
methods for embedded fields.

Updates #15924

Change-Id: I932011b1491d68767709559f515f699c04ce70d4
Reviewed-on: https://go-review.googlesource.com/23681
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-06-02 14:29:03 +00:00
Elias Naur
14968bc1e5 cmd/dist: skip an unsupported test on darwin/arm
Fixes the darwin/arm builder (I hope)

Change-Id: I8a3502a1cdd468d4bf9a1c895754ada420b305ce
Reviewed-on: https://go-review.googlesource.com/23684
Run-TryBot: Elias Naur <elias.naur@gmail.com>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-06-02 14:02:07 +00:00
Elias Naur
6c4f8cd0d1 misc/cgo/test: fix issue9400 test on android/386
The test for #9400 relies on an assembler function that manipulates
the stack pointer. Meanwile, it uses a global variable for
synchronization. However, position independent code on 386 use a
function call to fetch the base address for global variables.
That function call in turn overwrites the Go stack.

Fix that by fetching the global variable address once before the
stack register manipulation.

Fixes the android/386 builder.

Change-Id: Ib77bd80affaa12f09d582d09d8b84a73bd021b60
Reviewed-on: https://go-review.googlesource.com/23683
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-06-02 14:01:47 +00:00
Elias Naur
42c51debe8 misc/cgo/test,cmd/dist: enable (more) Cgo tests on iOS
For #15919

Change-Id: I9fc38d9c8a9cc9406b551315e1599750fe212d0d
Reviewed-on: https://go-review.googlesource.com/23635
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 10:09:12 +00:00
Dmitry Vyukov
ba22172832 runtime: fix typo in comment
Change-Id: I82e35770b45ccd1433dfae0af423073c312c0859
Reviewed-on: https://go-review.googlesource.com/23680
Reviewed-by: Andrew Gerrand <adg@golang.org>
2016-06-02 06:02:01 +00:00
Anmol Sethi
15db3654b8 net/http: http.Request.Context doc fix
The comment on http.Request.Context says that the context
is canceled when the client's connection closes even though
this has not been implemented. See #15927

Change-Id: I50b68638303dafd70f77f8f778e6caff102d3350
Reviewed-on: https://go-review.googlesource.com/23672
Reviewed-by: Andrew Gerrand <adg@golang.org>
2016-06-02 05:25:46 +00:00
Andrew Gerrand
6a0fd18016 doc: mention net/http/httptrace package in release notes
Updates #15810

Change-Id: I689e18409a88c9e8941aa2e98f472c331efd455e
Reviewed-on: https://go-review.googlesource.com/23674
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-02 04:38:52 +00:00
Ian Lance Taylor
17f7461ed6 doc/go1.7.html: fix spelling of cancelation
We say "cancelation," not "cancellation."

Fixes #15928.

Change-Id: I66d545404665948a27281133cb9050eebf1debbb
Reviewed-on: https://go-review.googlesource.com/23673
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-02 04:13:08 +00:00
Michael Hudson-Doyle
d25c3eadea cmd/compile: do not generate tail calls when dynamic linking on ppc64le
When a wrapper method calls the real implementation, it's not possible to use a
tail call when dynamic linking on ppc64le. The bad scenario is when a local
call is made to the wrapper: the wrapper will call the implementation, which
might be in a different module and so set the TOC to the appropriate value for
that module. But if it returns directly to the wrapper's caller, nothing will
reset it to the correct value for that function.

Change-Id: Icebf24c9a2a0a9a7c2bce6bd6f1358657284fb10
Reviewed-on: https://go-review.googlesource.com/23468
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-02 02:34:01 +00:00
Mikio Hara
068c745e1e vendor: update vendored route
Updates golang.org/x/net/route to rev fac978c for:
- route: fix typos in test

Change-Id: I35de1d3f8e887c6bb5fe50e7299f2fc12e4426de
Reviewed-on: https://go-review.googlesource.com/23660
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-02 00:59:46 +00:00
Andrew Gerrand
3c6b6684ce api: promote next.txt to go1.7.txt and update api tool
Change-Id: Idb348be00f949da553aa6aab62836f59dfee298d
Reviewed-on: https://go-review.googlesource.com/23671
Reviewed-by: Chris Broadfoot <cbro@golang.org>
Run-TryBot: Andrew Gerrand <adg@golang.org>
2016-06-02 00:22:03 +00:00
Andrew Gerrand
36358b1606 api: remove os.File.Size and http.Transport.Dialer
This method and field were added and then later removed during the 1.7
development cycle.

Change-Id: I0482a6356b91d2be67880b44ef5d8a1daab49ec8
Reviewed-on: https://go-review.googlesource.com/23670
Reviewed-by: Chris Broadfoot <cbro@golang.org>
2016-06-02 00:21:58 +00:00
Andrew Gerrand
d7ae8b3c11 api: update next.txt
Change-Id: I04da6a56382d3bd96e3c849a022618553039b2db
Reviewed-on: https://go-review.googlesource.com/23651
Reviewed-by: Chris Broadfoot <cbro@golang.org>
2016-06-01 23:55:58 +00:00
Adam Langley
2a8c81ffaa crypto/tls: buffer handshake messages.
This change causes TLS handshake messages to be buffered and written in
a single Write to the underlying net.Conn.

There are two reasons to want to do this:

Firstly, it's slightly preferable to do this in order to save sending
several, small packets over the network where a single one will do.

Secondly, since 37c28759ca errors from
Write have been returned from a handshake. This means that, if a peer
closes the connection during a handshake, a “broken pipe” error may
result from tls.Conn.Handshake(). This can mask any, more detailed,
fatal alerts that the peer may have sent because a read will never
happen.

Buffering handshake messages means that the peer will not receive, and
possibly reject, any of a flow while it's still being written.

Fixes #15709

Change-Id: I38dcff1abecc06e52b2de647ea98713ce0fb9a21
Reviewed-on: https://go-review.googlesource.com/23609
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 23:26:04 +00:00
Tom Bergan
f6c0241999 net/http: update bundled http2
Updates x/net/http2 to git rev 6bdd4be4 for CL 23526:

  http2: GotFirstResponseByte hook should only fire once

Also updated the trace hooks test to verify that all trace hooks are called
exactly once except ConnectStart/End, which may be called multiple times (due
to happy-eyeballs).

Fixes #15777

Change-Id: Iea5c64eb322b58be27f9ff863b3a6f90e996fa9b
Reviewed-on: https://go-review.googlesource.com/23527
Reviewed-by: Andrew Gerrand <adg@golang.org>
2016-06-01 23:15:34 +00:00
Andrew Gerrand
d0c1888739 doc: revert copyright date to 2009
Somehow this date was changed in error (by me) to 2012.
It should have always been 2009.

Change-Id: I87029079458d4c4eeeff2f2fc0574f10afa9af09
Reviewed-on: https://go-review.googlesource.com/23622
Reviewed-by: Rob Pike <r@golang.org>
2016-06-01 22:40:04 +00:00
Elias Naur
6de014b9e2 misc/cgo/test,cmd/dist: enable (most) Cgo tests on Android
Some tests cannot build for Android; use build tags and stubs to
skip them.

For #15919

Change-Id: Ieedcb73d4cabe23c3775cfb1d44c1276982dccd9
Reviewed-on: https://go-review.googlesource.com/23634
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-06-01 22:06:51 +00:00
Robert Griesemer
bbd1dcdf7d cmd/compile: correctly export underlying type of predecl. error type
Fixes #15920.

Change-Id: I78cd79b91a58d0f7218b80f9445417f4ee071a6e
Reviewed-on: https://go-review.googlesource.com/23606
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 21:32:46 +00:00
Alberto Donizetti
5db44c17a2 math/big: avoid panic in float.Text with negative prec
Fixes #15918

Change-Id: I4b434aed262960a2e6c659d4c2296fbf662c3a52
Reviewed-on: https://go-review.googlesource.com/23633
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 19:20:52 +00:00
Emmanuel Odeke
77026ef902 runtime: document heap scavenger memory summary
Fixes #15212.

Change-Id: I2628ec8333330721cddc5145af1ffda6f3e0c63f
Reviewed-on: https://go-review.googlesource.com/23319
Reviewed-by: Austin Clements <austin@google.com>
2016-06-01 19:06:43 +00:00
Ian Lance Taylor
bc4fdfdbfe os/signal: deflake TestReset/TestIgnore
Fixes #15661.

Change-Id: Ic3a8296fc7107f491880900ef52563e52caca1a3
Reviewed-on: https://go-review.googlesource.com/23615
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 16:47:01 +00:00
Keith Randall
52fe472472 cmd/compile: for arm, zero unaligned memory 1 byte at a time
If memory might be unaligned, zero it one byte at a time
instead of 4 bytes at a time.

Fixes #15902

Change-Id: I4eff0840e042e2f137c1a4028f08793eb7dfd703
Reviewed-on: https://go-review.googlesource.com/23587
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
2016-06-01 14:14:13 +00:00
David du Colombier
e29e0ba19a cmd/compile: fix TestAssembly on Plan 9
Since CL 23620, TestAssembly is failing on Plan 9.

In CL 23620, the process environment is passed to 'go tool compile'
after setting GOARCH. On Plan 9, if GOARCH is already set in the
process environment, it would take precedence. On Unix, it works
as expected because the first GOARCH found takes precedence.

This change uses the mergeEnvLists function from cmd/go/main.go
to merge the two environment lists such that variables with the
same name in "in" replace those in "out".

Change-Id: Idee22058343932ee18666dda331c562c89c33507
Reviewed-on: https://go-review.googlesource.com/23593
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 13:33:43 +00:00
Dan Peterson
bd2dc2d819 doc: rename Unshare to Unshareflags in go1.7 release notes
Implementation changed in https://golang.org/cl/23612.

Updates #15810

Change-Id: I8fff9e3aa3e54162546bb9ec1cc2ebba2b6d9fed
Reviewed-on: https://go-review.googlesource.com/23614
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-01 13:13:56 +00:00
Marcel van Lohuizen
ad074e205e regexp: use Run for benchmark
Change-Id: I4d19e3221d3789d4c460b421b2d1484253778068
Reviewed-on: https://go-review.googlesource.com/23429
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
2016-06-01 10:28:01 +00:00
Alexander Morozov
88ae6495d0 syscall: rename SysProcAttr.Unshare to Unshareflags
For symmetry with Cloneflags and it looks slightly weird because there
is syscall.Unshare method.

Change-Id: I3d710177ca8f27c05b344407f212cbbe3435094b
Reviewed-on: https://go-review.googlesource.com/23612
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2016-06-01 04:27:28 +00:00
Michael Hudson-Doyle
2885e07c25 cmd/compile: pass process env to 'go tool compile' in compileToAsm
In particular, this stops the test failing when GOROOT and GOROOT_FINAL are
different.

Change-Id: Ibf6cc0a173f1d965ee8aa31eee2698b223f1ceec
Reviewed-on: https://go-review.googlesource.com/23620
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-01 03:55:09 +00:00
Kenny Grant
04acd625d7 context: fix typo in comments
Change-Id: I41310ec88c889fda79d80eaf4a742a1000284f60
Reviewed-on: https://go-review.googlesource.com/23591
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 00:09:32 +00:00
Robert Griesemer
fe62a9ee87 crypto/tls: remove unused variable in benchmark code
This fixes `go test go/types`.

https://golang.org/cl/23487/ introduced this code which contains
two unused variables (declared and assigned to, but never read).
cmd/compile doesn't report the error due open issue #8560 (the
variables are assigned to in a closure), but go/types does. The
build bot only runs go/types tests in -short mode (which doesn't
typecheck the std lib), hence this doesn't show up on the dashboard
either.

We cannot call b.Fatal and friends in the goroutine. Communicating
the error to the invoking function requires a channel or a mutex.
Unless the channel/sycnhronized variable is tested in each iteration
that follows, the iteration blocks if there's a failure. Testing in
each iteration may affect benchmark times.

One could use a time-out but that time depends on the underlying system.
Panicking seems good enough in this unlikely case; better than hanging
or affecting benchmark times.

Change-Id: Idce1172da8058e580fa3b3e398825b0eb4316325
Reviewed-on: https://go-review.googlesource.com/23528
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-01 00:06:09 +00:00
Keith Randall
e106122200 cmd/compile: test non-constant shifts
Test all the weird shifts, like int8 shifted right by uint16.
Increases coverage for shift lowerings in AMD64.rules.

Change-Id: I066fe6ad6bfc05253a8d6a2ee17ff244d3a7652e
Reviewed-on: https://go-review.googlesource.com/23585
Run-TryBot: Todd Neal <todd@tneal.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Todd Neal <todd@tneal.org>
2016-06-01 00:06:00 +00:00
Robert Griesemer
3d81d4adc9 spec: document that duplicate types are invalid in type switches
Both compilers and also go/types don't permit duplicate types in
type switches; i.e., this spec change is documenting a status quo
that has existed for some time.

Furthermore, duplicate nils are not accepted by gccgo or go/types;
and more recently started causing a compiler error in gc. Permitting
them is inconsistent with the existing status quo.

Rather than making it an implementation restriction (as we have for
expression switches), this is a hard requirement since it was enforced
from the beginning (except for duplicate nils); it is also a well
specified requirement that does not pose a significant burden for
an implementation.

Fixes #15896.

Change-Id: If12db5bafa87598b323ea84418cb05421e657dd8
Reviewed-on: https://go-review.googlesource.com/23584
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-05-31 23:53:43 +00:00