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Commit Graph

36634 Commits

Author SHA1 Message Date
David du Colombier
66a67ee6b4 net: implement cancellable lookup on Plan 9
This change implements cancellable lookup
on Plan 9. The query function has been modified
to return when the ctx.Done channel is closed.

Fixes #25361.

Change-Id: I544b779ceec8d69975bc7363045849c21cbfd59e
Reviewed-on: https://go-review.googlesource.com/112981
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-13 21:28:12 +00:00
Alessandro Arzilli
3636d53c61 cmd/link: writelines should keep is_stmt in sync with what it's writing
For all functions but the last one if the function ends on a
non-statement instruction the statement flag in debug_line is changed
but is_stmt is not updated to match.

Change-Id: I03c275c5e261ea672ce4da7baca2458810708326
Reviewed-on: https://go-review.googlesource.com/112979
Reviewed-by: David Chase <drchase@google.com>
2018-05-13 20:09:56 +00:00
Martin Möhrmann
6495bf1710 cmd/compile: ensure init of memclr happens after growslice in extendslice
Using the extendslice init node list to add the init nodes for the memclr
call could add init nodes for memclr function before the growslice call
created by extendslice.

As all arguments of the memclr were explicitly set in OAS nodes before
the memclr call this does not change the generated code currently.
./all.bash runs fine when replacing memclr init with nil suggesting there
are currently no additional nodes added to the init of extendslice by
the memclr call.

Add the init nodes for the memclr call directly before the node of the
memclr call to prevent additional future init nodes for function calls
and argument evaluations to be evaluated too early when other compiler
code is added.

passes toolstash -cmp

Updates #21266

Change-Id: I44bd396fe864bfda315175aa1064f9d51c5fb57a
Reviewed-on: https://go-review.googlesource.com/112595
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-13 14:45:58 +00:00
Pierre Prinetti
6876447952 net/http/httptest: table-test using named subtests
Use Go 1.7 Run method of testing.T to run the table-driven tests into
separate, named subtests. The behaviour of the tests is not modified.

Change-Id: Ia88fa59a3534e79e3f0731e948b5f8a9919b339d
Reviewed-on: https://go-review.googlesource.com/84478
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-12 16:26:36 +00:00
Alex Brainman
33b2b17201 net: stop multiple sends into single capacity channel in lookupIP
ch is of size 1, and has only one read. But current code can
write to ch more than once. This makes goroutines that do network
name lookups block forever. Only 500 goroutines are allowed, and
we eventually run out of goroutines.

Rewrite the code to only write into ch once.

Fixes #24178

Change-Id: Ifbd37db377c8b05e69eca24cc9147e7f86f899d8
Reviewed-on: https://go-review.googlesource.com/111718
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-12 09:27:42 +00:00
Agniva De Sarker
f94b5a8105 math/rand: clarify documentation for Seed example
Fixes #25325

Change-Id: I101641be99a820722edb7272918e04e8d2e1646c
Reviewed-on: https://go-review.googlesource.com/112775
Reviewed-by: Rob Pike <r@golang.org>
2018-05-12 06:21:01 +00:00
Bryan C. Mills
e6a9335c7f runtime: skip GDB tests on Windows
Updates #22687.

Change-Id: Iedccd9d2416ae7150cd2febe81c8bc9493d8d65c
Reviewed-on: https://go-review.googlesource.com/112915
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-11 23:11:53 +00:00
Daniel Theophanes
94280237f4 database/sql: add note to Scanner that the database owns values
It was unclear that users must copy values out of the src value
for value types like []byte.

Fixes #24492

Change-Id: I99ad61e0ad0075b9efc5ee4e0d067f752f91b8fa
Reviewed-on: https://go-review.googlesource.com/108535
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-11 20:28:02 +00:00
Elias Naur
4122319e5a misc/ios: forward SIGQUIT to the iOS program
When running tests that fails to complete within the test timeout,
the go tool sends the test program a SIGQUIT signal to print
backtraces. However, for tests running with an exec wrapper, the
resulting backtraces will come from the exec wrapper process and
not the test program.

Change the iOS exec wrapper to forward SIGQUIT signals to the lldb
python driver and change the driver to forward the signals to the
running test on the device.

Before:

$ GOARCH=arm64 go test forever_test.go
lldb: running program
SIGQUIT: quit
PC=0x10816fe m=0 sigcode=0

goroutine 54 [syscall]:
syscall.Syscall6(0x7, 0x16ab, 0xc000033dfc, 0x0, 0xc000116f30, 0x0, 0x0, 0xc000116f30, 0x0, 0x1328820)
	/Users/elias/go-tip/src/syscall/asm_darwin_amd64.s:41 +0x5 fp=0xc000033d48 sp=0xc000033d40 pc=0x10816d5
syscall.wait4(0x16ab, 0xc000033dfc, 0x0, 0xc000116f30, 0x90, 0x1200e00, 0x1)
	/Users/elias/go-tip/src/syscall/zsyscall_darwin_amd64.go:34 +0x7b fp=0xc000033dc0 sp=0xc000033d48 pc=0x107e4eb
syscall.Wait4(0x16ab, 0xc000033e4c, 0x0, 0xc000116f30, 0xc0000fd518, 0x0, 0x0)
	/Users/elias/go-tip/src/syscall/syscall_bsd.go:129 +0x51 fp=0xc000033e10 sp=0xc000033dc0 pc=0x107b7b1
os.(*Process).wait(0xc00008d440, 0x1095e2e, 0xc0000fd518, 0x0)
	/Users/elias/go-tip/src/os/exec_unix.go:38 +0x7b fp=0xc000033e80 sp=0xc000033e10 pc=0x109af2b
os.(*Process).Wait(0xc00008d440, 0xc000033fb0, 0x10, 0x11d1f00)
	/Users/elias/go-tip/src/os/exec.go:125 +0x2b fp=0xc000033eb0 sp=0xc000033e80 pc=0x109a47b
os/exec.(*Cmd).Wait(0xc0000b1ce0, 0xc000033f90, 0x11394df)
	/Users/elias/go-tip/src/os/exec/exec.go:463 +0x5b fp=0xc000033f28 sp=0xc000033eb0 pc=0x1136f0b
main.startDebugBridge.func1(0xc0000b1ce0, 0xc0000b8ae0, 0xc0000e2a80)
	/Users/elias/go-tip/misc/ios/go_darwin_arm_exec.go:314 +0x40 fp=0xc000033fc8 sp=0xc000033f28 pc=0x11a1980
runtime.goexit()
	/Users/elias/go-tip/src/runtime/asm_amd64.s:1360 +0x1 fp=0xc000033fd0 sp=0xc000033fc8 pc=0x10565a1
created by main.startDebugBridge
	/Users/elias/go-tip/misc/ios/go_darwin_arm_exec.go:313 +0x15f

...

After:

$ GOARCH=arm64 go test forever_test.go
lldb: running program
=== RUN   TestForever
SIGQUIT: quit
PC=0x100144e24 m=0 sigcode=0

...

goroutine 19 [select (no cases)]:
command-line-arguments.TestForever(0x1300b60f0)
	/Users/elias/go-tip/src/forever_test.go:6 +0x18
testing.tRunner(0x1300b60f0, 0x100211aa0)
	/Users/elias/go-tip/src/testing/testing.go:795 +0xa8
created by testing.(*T).Run
	/Users/elias/go-tip/src/testing/testing.go:840 +0x22c

...

Change-Id: I6b3cf1662d07a43ade0530842733b0944bee1ace
Reviewed-on: https://go-review.googlesource.com/112676
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2018-05-11 16:47:28 +00:00
Daniel Theophanes
d89ea41006 database/sql: add additional Stats to DBStats
Provide better statistics for the database pool. Add counters
for waiting on the pool and closes. Too much waiting or too many
connection closes could indicate a problem.

Fixes #24683
Fixes #22138

Change-Id: I9e1e32a0487edf41c566b8d9c07cb55e04078fec
Reviewed-on: https://go-review.googlesource.com/108536
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-11 14:52:58 +00:00
quasilyte
e405c9cca3 cmd/internal/obj/x86: use named consts for movtab Z-cases
Use 0-terminated opbyte sequences for Zlit-like movtabs instead of E=0xff.

movCodeFullPtr is unused (load full ptr is unsupported), but it should
be removed in a separate CL (if removed at all).

Passes toolstash-check.

Change-Id: I28436718d93b017153de0e50e3bcec344ea4ee05
Reviewed-on: https://go-review.googlesource.com/107076
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2018-05-11 14:40:34 +00:00
Robert Griesemer
47be3d49c7 reflect: use 'defined' rather than 'named', use 'embedded' rather than 'anonymous'
On the API level this is just an update of the documentation to match
the current spec more closely.

On the implementation side, this is a rename of various unexported names.

For #22005.

Change-Id: Ie5ae32f3b10f003805240efcceab3d0fd373cd51
Reviewed-on: https://go-review.googlesource.com/112717
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-05-10 23:19:40 +00:00
Robert Griesemer
903f095c1a go/types: adopt spec terminology, use 'embedded' rather then 'anonyous' field
Commit f8b4123613 (https://go-review.googlesource.com/35108) adjusted
the spec to uniformly use 'embedded' rather than 'anonymous' for struct
embedded fields. Adjust go/types' internal terminology.

Provide an additional accessor Var.IsEmbedded().

This is essentially a rename of an internal field and adjustments of
documentation.

Change-Id: Icd07aa192bc5df7a2ee103185fa7e9c55e8f1ac3
Reviewed-on: https://go-review.googlesource.com/112716
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
2018-05-10 20:54:21 +00:00
Daniel Theophanes
b98ffdf859 database/sql: check for nil connRequest.conn before use
The connRequest may return a nil conn value. However in a rare
case that is difficult to test for it was being passed to
DB.putConn without a nil check. This was an error as this
made no sense if the driverConn is nil. This also caused
a panic in putConn.

A test for this would be nice, but didn't find a sane
way to test for this condition.

Fixes #24445

Change-Id: I827316e856788a5a3ced913f129bb5869b7bcf68
Reviewed-on: https://go-review.googlesource.com/102477
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alexey Palazhchenko <alexey.palazhchenko@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-10 19:41:08 +00:00
Robert Griesemer
b9c8e870d1 cmd/compile: use 'not defined' rather than 'unnamed' in error message
A receiver type may have an (alias type) name and thus be 'named'
even though the name doesn't refer to a defined type. Adjust the
error message to make this clearer.

Change-Id: I969bf8d1ba3db8820f67f6ecd6d5cfe564c5b80d
Reviewed-on: https://go-review.googlesource.com/112638
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-10 19:32:01 +00:00
Russ Cox
4826d20a09 cmd/go/internal/work: cache cgo invocations for vet, build modes
Even if we had an up-to-date package binary, we reran cgo anyway if
(1) we needed a header file for buildmode c-archive or c-shared, or
(2) we needed cgo-translated files source files for input to go vet.

Cache those outputs too, so that we can avoid cgo if possible.

Working toward exposing the cgo-generated files in go list.

Change-Id: I339ecace925d2b0adc235a17977ecadb3d636c73
Reviewed-on: https://go-review.googlesource.com/108015
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2018-05-10 19:15:33 +00:00
Russ Cox
9ccfde6ee7 cmd/go: add support for 'go run pkg' or 'go run .'
To date, go run has required a list of .go files.
This CL allows in place of that list a single import path
or a directory name or a pattern matching a single patckage.
This allows 'go run pkg' or 'go run dir', most importantly 'go run .'.

The discussion in #22726 gives more motivation.
The basic idea is that you can already run 'go test .'
but if you're developing a command it's pretty awkward
to iterate at the same speed. This lets you do that,
by using 'go run . [args]'.

Fixes #22726.

Change-Id: Ibfc8172a4f752588ad96df0a6b0928e9b61fa27f
Reviewed-on: https://go-review.googlesource.com/109341
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2018-05-10 19:15:27 +00:00
Russ Cox
670cb7603a cmd/go: remove import path debugging hooks
These are no longer needed.

Change-Id: Ie42a84f2bd24d2f59324bb66551c46e6af60c302
Reviewed-on: https://go-review.googlesource.com/109339
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2018-05-10 18:41:24 +00:00
Ingo Oeser
5bd88b028b net/http/pprof: fix typo on new index page
s/thread/thead/ as this is Table HEAD and not a thread as indicated by
the closing tag an context this apears in.

Change-Id: I3aa0cc95b96c9a594cb5a49713efa22d67e4990c
Reviewed-on: https://go-review.googlesource.com/112675
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-10 18:02:07 +00:00
Elias Naur
25f73db0b6 misc/ios: update documentation for running iOS programs and tests
Change-Id: I8e3077ab9c7dff66877ac00dc4600b53c07eb1f8
Reviewed-on: https://go-review.googlesource.com/112655
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-10 18:01:20 +00:00
Keith Randall
599f56dc05 cmd/compile: fix zero extend after float->int conversion
Don't do direct loads from argument slots if the sizes don't match.
This prevents us from loading from a float32 using a uint64 load
during expressions like uint64(math.float32Bits(f)) where f is a float32 arg.

Fixes #25322

Change-Id: I3887d76f78c844ba546243e7721d811c3d4a9700
Reviewed-on: https://go-review.googlesource.com/112637
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-10 17:32:43 +00:00
Agniva De Sarker
ef24fd739b net/http/pprof: update the /debug/pprof endpoint
- Documented the duration parameter in Profile() to match with Trace().

- Properly handling the error from strconv.ParseInt to match with Trace().

- Updated the profiles tables to include additional handlers exposed from
net/http/pprof. Added a separate section at the bottom to explain what
the profiles are and how to use them.

Fixes #24380

Change-Id: I8b7e100d6826a4feec81f29f918e7a7f7ccc71a0
Reviewed-on: https://go-review.googlesource.com/112495
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2018-05-10 15:40:01 +00:00
Lynn Boger
e4172e5f5e cmd/compile/internal/ssa: initialize t.UInt in SetTypPtrs()
Initialization of t.UInt is missing from SetTypPtrs in config.go,
preventing rules that use it from matching when they should.
This adds the initialization to allow those rules to work.

Updated test/codegen/rotate.go to test for this case, which
appears in math/bits RotateLeft32 and RotateLeft64. There had been
a testcase for this in go 1.10 but that went away when asm_test.go
was removed.

Change-Id: I82fc825ad8364df6fc36a69a1e448214d2e24ed5
Reviewed-on: https://go-review.googlesource.com/112518
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-10 14:50:30 +00:00
Ben Shi
f95ef94ad5 misc/android: add more information to README
Add more information to misc/android/README for developing
arm and arm64 with an Android environment.

Change-Id: I0c88996b6ab0c41946a2c7e69e9c92ec7bb3be27
Reviewed-on: https://go-review.googlesource.com/112276
Reviewed-by: Elias Naur <elias.naur@gmail.com>
2018-05-10 14:44:52 +00:00
Richard Musiol
bf23a4e61d cmd/internal/obj/wasm: avoid invalid offsets for Load/Store
Offsets for Load and Store instructions have type i32. Bad index
expression offsets can cause an offset to be larger than MaxUint32,
which is not allowed. One example for this is the test test/index0.go.

Generate valid code by adding a guard to the responsible rewrite rule.
Also emit a proper error when using such a bad index in assembly code.

Change-Id: Ie90adcbf3ae3861c26680eb81790f28692913ccf
Reviewed-on: https://go-review.googlesource.com/111955
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2018-05-10 12:05:17 +00:00
Gustav Westling
10529a01fd encoding/base32: handle NoPadding when using buffered encoding in Close
This changes makes encoder.Close aware of how many bytes to write if there
is any data left in the buffer.

Fixes #25295

Change-Id: I4138891359935509cb561c453b8059ba2b9e576b
GitHub-Last-Rev: f374096d2f
GitHub-Pull-Request: golang/go#25316
Reviewed-on: https://go-review.googlesource.com/112515
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-05-09 22:10:32 +00:00
Gustav Westling
0f2d4d0008 encoding/base32: handle surplus padding consistently
This changes decoder.Read to always return io.ErrUnexpectedEOF if the input
contains surplus padding or unexpected content. Previously the error could
be io.EOF or io.ErrUnexpectedEOF depending on how the input was chunked.

Fixes #25296

Change-Id: I07c36c35e6c83e795c3991bfe45647a35aa58aa4
GitHub-Last-Rev: 818dfda90b
GitHub-Pull-Request: golang/go#25319
Reviewed-on: https://go-review.googlesource.com/112516
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-05-09 22:09:56 +00:00
Yury Smolsky
3e297120fd cmd/go: fix the rebuilding stale packages test
Non-main packages do not depend on the "runtime" package,
but main packages still do. Use a main package in the test.

This change passes the -i flag to the install command
to allow installation of updated dependencies,
and removes "install std" as unnecessary.

https://golang.org/cl/107957 is relevant to fixed test.

Updates #24436

Change-Id: If1845f37581a16ad77e72e50be21010e198bc7c5
Reviewed-on: https://go-review.googlesource.com/103675
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-09 21:14:24 +00:00
Bryan C. Mills
df48003618 spec: clarify “Constant expressions” for untyped operands
This change addresses the grammatical complexity described in
https://groups.google.com/forum/#!topic/golang-dev/RmP-LMC3g58.

Change-Id: Ib292b4ca9c880c7c1c8c992e7c033a0f8f951f2c
Reviewed-on: https://go-review.googlesource.com/106855
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2018-05-09 20:36:22 +00:00
Artyom Pervukhin
4410934cba encoding/xml: fix valid character range
Section 2.2 of the referenced spec http://www.xml.com/axml/testaxml.htm
defines 0xD7FF as a (sub)range boundary, not 0xDF77.

Fixes #25172

Change-Id: Ic5a3328cd46ef6474b8e93c4a343dcfba0e6511f
Reviewed-on: https://go-review.googlesource.com/109495
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-05-09 17:31:08 +00:00
Hana (Hyang-Ah) Kim
46047e6447 cmd/vendor/.../pprof: update to 520140b6bf47519c766e8380e5f094576347b016
Change-Id: If431dfa59496b86f58f2ba2a83ca544a28a2a972
Reviewed-on: https://go-review.googlesource.com/112435
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-09 16:42:28 +00:00
Ian Lance Taylor
d540da105c go/build, cmd/go: don't expect gccgo to have GOROOT packages
When using gccgo the standard library sources are not available in
GOROOT. Don't expect them to be there. In the gccgo build, use a set
of standard library packages generated at build time.

Change-Id: Id133022604d9b7e778e73e8512f9080c61462fba
Reviewed-on: https://go-review.googlesource.com/111595
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2018-05-09 16:42:20 +00:00
Ian Lance Taylor
814c749c8f cmd/go: force untranslated output when running GCC/clang driver
When we look for the tool ID to use for a compiler, force untranslated
output so that we can match the literal string "version".

Fixes https://gcc.gnu.org/PR84765

Change-Id: I607df445dbd3c5a7c3a6907601adcb039ac16fc1
Reviewed-on: https://go-review.googlesource.com/111575
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2018-05-09 13:37:52 +00:00
Ian Lance Taylor
8088a7fc12 cmd/go: fix testsuite for gccgo
A number of cmd/go tests can never work with gccgo, for various
different reasons. Skip those tests when using gccgo. Adjust some
other tests to pass when using gccgo. Adjust one test to not skip when
using gccgo, since it does work.

Change-Id: I33b09558581a1e304416cf1c05a96f9526abba0e
Reviewed-on: https://go-review.googlesource.com/110915
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2018-05-09 12:54:58 +00:00
Ian Lance Taylor
c465064067 cmd/go: for gccgo, don't edit cgo header when using -o
This change was made to the gccgo sources as part of CL 47037.
It is required to make the testcarchive and testcshared tests work.
Otherwise using `go build -mode=c-archive -o libgo.a` will cause the
header file to be named go.h rather than libgo.h.

Change-Id: I2db1d7b0f575368b31273cc01097447a0471efd6
Reviewed-on: https://go-review.googlesource.com/111615
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2018-05-09 12:53:36 +00:00
Michael Munday
6d00e8c478 cmd/compile: convert memmove call into Move when arguments are disjoint
Move ops can be faster than memmove calls because the number of bytes
to be moved is fixed and they don't incur the overhead of a call.
This change allows memmove to be converted into a Move op when the
arguments are disjoint.

The optimization is only enabled on s390x at the moment, however
other architectures may also benefit from it in the future. The
memmove inlining rule triggers an extra 12 times when compiling the
standard library. It will most likely make more of a difference as the
disjoint function is improved over time (to recognize fresh heap
allocations for example).

Change-Id: I9af570dcfff28257b8e59e0ff584a46d8e248310
Reviewed-on: https://go-review.googlesource.com/110064
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
2018-05-09 11:20:40 +00:00
Elias Naur
66cb80c266 misc/ios: inject the -u device_id option before any other arguments
The idevicedebugserverproxy command takes a port number without a
flag, like so:

idevicedebugserverproxy 3222

If the -u <device_id> flag is added afterwards, it is ignored and
the command use an arbitrary device. Instead, always inject the -u
flag before any other idevice command arguments.

While here, also kill any leftover idevicedebugserverproxy instance
previous (failed) runs might have left running.

Change-Id: I0bf06ed1a20ef225abeca183f9ba8f396662d435
Reviewed-on: https://go-review.googlesource.com/112216
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-09 07:16:07 +00:00
Martin Möhrmann
337cc29156 cmd/compile: simplify extendslice and isAppendOfMake
Change-Id: Ia66361812837dde23aac09e916f058ba509a323c
Reviewed-on: https://go-review.googlesource.com/111737
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2018-05-09 05:24:36 +00:00
Daniel Martí
2486ebfb63 cmd/vet: assume that no builtin funcs are pure
That was the intention with the existing code, but it was buggy; builtin
functions aren't treated as values by types.TypeAndVal. Thus, we should
use the IsBuiltin method instead of IsValue.

Teaching vet what builtin funcs are pure is already being tracked as a
separate issue, #22851.

While at it, also add a test with methods, just to be sure that the
current logic doesn't break with that edge case either.

Fixes #25303.

Change-Id: Ic18402b22cceeabf76641c02f575b194b9a536cc
Reviewed-on: https://go-review.googlesource.com/112177
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2018-05-09 05:13:03 +00:00
Daniel Martí
23e9dc7994 html/template: always write untyped nil as JS null
text/template recently added support for passing untyped nil as function
call arguments, as those would be mixed up with "missing argument"
values before. See CL 95215.

html/template now needs a small change to adapt to that new possibility.
In particular, when printing values as JS bytes, its code was written
under the assumption that the values would never be untyped nil - that
is, the reflect.Value would always be valid.

Short-circuit indirectToJSONMarshaler on an untyped nil, to avoid the
panic and fall back to the existing " null " output. Before this change
and on 1.10, printing a typed nil and an untyped nil resulted in:

	null ""

After this change, one will get:

	null null

Fixes #24717.

Change-Id: I03cd10ef64b96e837bacc9ccf4cf25624d80de1c
Reviewed-on: https://go-review.googlesource.com/109215
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rhys Hiltner <rhys@justin.tv>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-09 04:09:29 +00:00
Hana Kim
c1492b6bd0 runtime/trace: delete functions replaced by cl/108296
Change-Id: I9bd4e13aafce14f76606b0f96496f621232c9e37
Reviewed-on: https://go-review.googlesource.com/112198
Reviewed-by: Peter Weinberger <pjw@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-09 00:05:52 +00:00
Matt Juran
e0adc35c47 test: fast GC+concurrency+types verification
This test runs independent goroutines modifying a comprehensive variety
of local vars to look for garbage collector regressions. This test has
been verified to trigger issue 22781 on the go1.9.2 tag. This test
expands on test/fixedbugs/issue22781.go.

Tests #22781

Change-Id: Id32f8dde7ef650aea1b1b4cf518e6d045537bfdc
Reviewed-on: https://go-review.googlesource.com/93715
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-08 21:15:48 +00:00
Martin Möhrmann
aee71dd70b cmd/compile: optimize map-clearing range idiom
replace map clears of the form:

        for k := range m {
                delete(m, k)
        }

(where m is map with key type that is reflexive for ==)
with a new runtime function that clears the maps backing
array with a memclr and reinitializes the hmap struct.

Map key types that for example contain floats are not
replaced by this optimization since NaN keys cannot
be deleted from maps using delete.

name                           old time/op  new time/op  delta
GoMapClear/Reflexive/1         92.2ns ± 1%  47.1ns ± 2%  -48.89%  (p=0.000 n=9+9)
GoMapClear/Reflexive/10         108ns ± 1%    48ns ± 2%  -55.68%  (p=0.000 n=10+10)
GoMapClear/Reflexive/100        303ns ± 2%   110ns ± 3%  -63.56%  (p=0.000 n=10+10)
GoMapClear/Reflexive/1000      3.58µs ± 3%  1.23µs ± 2%  -65.49%  (p=0.000 n=9+10)
GoMapClear/Reflexive/10000     28.2µs ± 3%  10.3µs ± 2%  -63.55%  (p=0.000 n=9+10)
GoMapClear/NonReflexive/1       121ns ± 2%   124ns ± 7%     ~     (p=0.097 n=10+10)
GoMapClear/NonReflexive/10      137ns ± 2%   139ns ± 3%   +1.53%  (p=0.033 n=10+10)
GoMapClear/NonReflexive/100     331ns ± 3%   334ns ± 2%     ~     (p=0.342 n=10+10)
GoMapClear/NonReflexive/1000   3.64µs ± 3%  3.64µs ± 2%     ~     (p=0.887 n=9+10)
GoMapClear/NonReflexive/10000  28.1µs ± 2%  28.4µs ± 3%     ~     (p=0.247 n=10+10)

Fixes #20138

Change-Id: I181332a8ef434a4f0d89659f492d8711db3f3213
Reviewed-on: https://go-review.googlesource.com/110055
Reviewed-by: Keith Randall <khr@golang.org>
2018-05-08 21:15:16 +00:00
Rob Pike
cd1976dbef doc/faq: tidy up a couple of nits
The phrase "couple X" is considered colloquial, so make that "a couple of X".
Also move the start of a sentence to a new line in a couple of places
for easier editing, in one place thereby removing two spaces after a period.

Change-Id: If5ef05eb496afc235f8f0134c4e7346375a65181
Reviewed-on: https://go-review.googlesource.com/112176
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-08 19:57:49 +00:00
Hana (Hyang-Ah) Kim
43b18f4241 cmd/trace: handle invalid goid para in /trace
Change-Id: I1cb7c8b70a5ae16386f6abb577c23d821f7ff7f0
Reviewed-on: https://go-review.googlesource.com/112197
Reviewed-by: Peter Weinberger <pjw@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
2018-05-08 19:25:01 +00:00
Hana (Hyang-Ah) Kim
9eface7077 cmd/trace: skip links for buckets with 0 count
Change-Id: Ib1c2f7cc8e8f631ed9e74161699332f492d4cb0d
Reviewed-on: https://go-review.googlesource.com/112196
Reviewed-by: Peter Weinberger <pjw@google.com>
2018-05-08 19:24:56 +00:00
jimmyfrasche
d96221f206 doc: make front page video respond to layout changes (1/2)
The videos on the front page are always the same width, regardless of
the viewport width. These changes let the video fill the space given
to its container regardless of layout. It uses the standard hack for
making iframes responsive, but the videos are loaded at random and do
not have uniform aspect ratios so that information is injected into the
DOM using custom properties. If these are not supported, it falls back
to the same layout present before this change.

Note: this change also requires CL 108678 to complete the fix,
though either CL without the other is harmless.

Updates #24997.

Change-Id: I2f93dc21ffe01d99ce0e175e9dd0e3d486fddc9f
Reviewed-on: https://go-review.googlesource.com/108677
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
2018-05-08 19:21:12 +00:00
Keith Randall
f32348669c cmd/compile: rename memory-using operations
Some *mem ops are loads, some are stores, some are modifications.
Replace mem->load for the loads.
Replace mem->store for the stores.
Replace mem->modify for the load-modify-stores.

The only semantic change in this CL is to mark
ADD(Q|L)constmodify (which used to be ADD(Q|L)constmem) as
both a read and a write, instead of just a write. This is arguably
a bug fix, but the bug isn't triggerable at the moment, see CL 112157.

Change-Id: Iccb45aea817b606adb2d712ff99b10ee28e4616a
Reviewed-on: https://go-review.googlesource.com/112159
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-05-08 19:16:50 +00:00
Keith Randall
6b0941a1bf cmd/compile: remove unnecessary convert ops on 32-bit archs
Missing rule to fold out Convert ops on 32-bit architectures.

This comes up with expressions like
unsafe.Pointer(uintptr(p) + x)

Change-Id: I429e968e5d1a3e13a386ddd29a08ebb6d7dd938a
Reviewed-on: https://go-review.googlesource.com/112158
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2018-05-08 19:16:04 +00:00
Keith Randall
dffc915b2d cmd/compile: mark modify ops as both read and write
If the modify ops operate on a variable, we should tell the liveness
pass that the variable is still live before the instruction.

This looks like a bug, but I don't think there's any way to trigger
it at the moment. It only matters for pointer-containing values, and
the modify ops don't normally work on pointers. Even when I reach for
unsafe.Pointer tricks, I can't get ADDLmodify to work on pointers, as
there's always a Convert or VarDef preventing the coalescing.

TL;DR I can't figure out a test for this. But we should probably
fix it anyway.

Change-Id: I971c62616dec51a33788b7634e6478e1bfcd6260
Reviewed-on: https://go-review.googlesource.com/112157
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-08 19:13:58 +00:00