The assembler backend fixes too-far conditional branches, but only
for BEQ and like. Add a case for CBZ and like.

Fixes #17925.

Change-Id: Ie516e6c5ca165b582367283a0110f7081e00c214
Reviewed-on: https://go-review.googlesource.com/33304
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>

Fixes #17936

Change-Id: I20d09712b7d7303257994356904052ba64bc5bf2
Reviewed-on: https://go-review.googlesource.com/33306
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

This change makes use of synchronization primitive instead of
context-based canceling not to depend on defer execution scheduling.

Fixes #17927.

Change-Id: I5ca9287a48bb5cdda6845a7f12757f95175c5db8
Reviewed-on: https://go-review.googlesource.com/33257Reviewed-by: Ian Lance Taylor <iant@golang.org>

Like GOARM=5 does.

Fixes #17944

Change-Id: Ica2a54a90fbd4a29471d1c6009ace2fcc5e82a73
Reviewed-on: https://go-review.googlesource.com/33326Reviewed-by: Cherry Zhang <cherryyz@google.com>

These don't use any flags in TestMain itself, so the call is redundant
as M.Run will do it.

Change-Id: I00f2ac7f846dc2c3ad3535eb8177616b2d900149
Reviewed-on: https://go-review.googlesource.com/33275Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

To generate the correct section offset the shared code path for
R_CALL, R_PCREL, and R_GOTPCREL on darwin when externally linking
walks up the symbol heirarchy adding the differences. This is fine,
except in the case where we are generating a GOT lookup, because
the topmost symbol is left in r.Xsym instead of the symbol we are
looking up. So all funcsym GOT lookups were looking up the outer
"go.func.*" symbol.

Fix this by separating out the R_GOTPCREL code path.

For #17828 (and may fix it).

Change-Id: I2c9f4d135e77c17270aa064d8c876dc6d485d659
Reviewed-on: https://go-review.googlesource.com/33211
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fixes #16346.

Change-Id: Ie75a4ae7011036dd2c1f121a7a5e38d10177721e
Reviewed-on: https://go-review.googlesource.com/33296Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The use of these has been removed in recent commits.

Change-Id: Iff36a3ee4dcdfe39c40e93e2601f44d3c59f7024
Reviewed-on: https://go-review.googlesource.com/33274
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The test requires tons of memory and results various failures, mainly
runtime errors and process termination by SIGKILL, caused by resource
exhaustion when the node under test doesn't have much resources.

This change makes use of -tcpbig flag to enable the test.

Change-Id: Id53fa5d88543e2e60ca9bb4f55a1914ccca844e1
Reviewed-on: https://go-review.googlesource.com/33254Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

This ensures that runtime's signal handlers pass through the TSAN and
MSAN libc interceptors and subsequent calls to the intercepted
sigaction function from C will correctly see them.

Fixes #17753.

Change-Id: I9798bb50291a4b8fa20caa39c02a4465ec40bb8d
Reviewed-on: https://go-review.googlesource.com/33142Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: I897237667ffe9e9b2a5f92251a6f665d29479fd2
Reviewed-on: https://go-review.googlesource.com/33255Reviewed-by: Ian Lance Taylor <iant@golang.org>

Add an explicit WriteString method to closeOnce that acquires the
writers lock.  This overrides the one promoted from the
embedded *os.File field.  The promoted one naturally does not acquire
the lock, and can therefore race with the Close method.

Fixes #17647.

Change-Id: I3460f2a0d503449481cfb2fd4628b4855ab0ecdf
Reviewed-on: https://go-review.googlesource.com/33298
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Both automated updates with a few tweaks.

Change-Id: I24579a8dcc32a84a4fff5c2212681ef30dda61d1
Reviewed-on: https://go-review.googlesource.com/33297Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Only exe buildmode without cgo supported.

Change-Id: Id104a79a99d3285c04db00fd98b8affa94ea3c37
Reviewed-on: https://go-review.googlesource.com/31487
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

Change-Id: Ie7512cc27436cde53b58686b32a0389849a365e4
Reviewed-on: https://go-review.googlesource.com/33249
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

These bind flags were removed by mistake in CL 2167.

Fixes #17921.

Change-Id: I1e8089dade30a212b8db0b216c8299946d924d4b
Reviewed-on: https://go-review.googlesource.com/33271Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: I05f31938f3736100bd8b20a150c9fe3a6ffcdeae
Reviewed-on: https://go-review.googlesource.com/33245Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

If a C union type (or a C++ class type) can contain a pointer field,
then run the cgo checks on pointers to that type. This will test the
pointer as though it were an unsafe.Pointer, and will crash if it points
to Go memory that contains a pointer.

Fixes #15942.

Change-Id: Ic2d07ed9648d4b27078ae7683e26196bcbc59fc9
Reviewed-on: https://go-review.googlesource.com/33237
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates #17821

Change-Id: Iebd2e88b2d4f3d757ffad72456f4bfc0607d8110
Reviewed-on: https://go-review.googlesource.com/33162
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

In plugins and every program that opens a plugin, include a hash of
every imported package.

There are two versions of each hash: one local and one exported.
As the program starts and plugins are loaded, the first exported
symbol for each package becomes the canonical version.

Any subsequent plugin's local package hash symbol has to match the
canonical version.

Fixes #17832

Change-Id: I4e62c8e1729d322e14b1673bada40fa7a74ea8bc
Reviewed-on: https://go-review.googlesource.com/33161Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fixes #17900.

Change-Id: I42cda6ac9cf48ed739d3a015a90b3cb15edf8ddf
Reviewed-on: https://go-review.googlesource.com/33243
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

I guess this was fixed at some point. Remove a skipped test in
net/http and add an explicit test in net.

Fixes #17695

Change-Id: Idb9f3e236b726bb45098474b830c95c1fce57529
Reviewed-on: https://go-review.googlesource.com/33242
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Apparently when GOMAXPROCS == 1 a simple sched_yield in a tight loop is
not necessarily sufficient to permit a signal handler to run. Instead,
sleep for 1/1000 of a second.

Fixes #16649.

Change-Id: I83910144228556e742b7a92a441732ef61aa49d9
Reviewed-on: https://go-review.googlesource.com/33239
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This change redoes the fix for #16101 (CL 31092) in a different way by
making t.Clone return the template associated with the t.Name() while
allowing for the case that a template of the same name is define-d.

Fixes #17735.

Change-Id: I1e69672390a4c81aa611046a209008ae4a3bb723
Reviewed-on: https://go-review.googlesource.com/33210
Run-TryBot: Caleb Spare <cespare@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>

Change-Id: I9a42cb55544185ade20b2a4a9de5d39a6cfc6fc6
Reviewed-on: https://go-review.googlesource.com/33172Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Updates x/net/http2 to x/net git rev 00ed5e9 for:

    http2: schedule RSTStream writes onto its stream's queue
    https://golang.org/cl/33238

Fixes #17243

Change-Id: I79cc5d15bf69ead28d549d4f798c12f4ee2a2201
Reviewed-on: https://go-review.googlesource.com/33241Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Instead of scanning the text to count newlines, which is n², keep track as we go
and store the line number in the token.

benchmark                 old ns/op      new ns/op     delta
BenchmarkParseLarge-4     1589721293     38783310      -97.56%

Fixes #17851

Change-Id: I231225c61e667535e2ce55cd2facea6d279cc59d
Reviewed-on: https://go-review.googlesource.com/33234
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates x/net/http2 to x/net git rev 6dfeb344 for:

   http2: make Server respect http1 Server's SetKeepAlivesEnabled
   https://golang.org/cl/33153

And adds a test in std.

Fixes #17717

Change-Id: I3ba000abb6f3f682261e105d8a4bb93bde6609fe
Reviewed-on: https://go-review.googlesource.com/33231
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tom Bergan <tombergan@google.com>

This reverts commit 794fb71d.

Reason for revert: submitted without TryBots and it broke all three race builders.

Change-Id: I80a1e566616f0ee8fa3529d4eeee04268f8a713b
Reviewed-on: https://go-review.googlesource.com/33232Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

comment on unexported function starts with wrong functionname

Change-Id: Ib16c2fe42b5a8d4606ed719f620923c17839d091
Reviewed-on: https://go-review.googlesource.com/33203Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Instead of scanning the text to count newlines, which is n², keep track as we go
and store the line number in the token.

benchmark                 old ns/op      new ns/op     delta
BenchmarkParseLarge-4     1589721293     38783310      -97.56%

Fixes #17851

Change-Id: Ieaf89a35e371b405ad92e38baa1e3fa98d18cfb4
Reviewed-on: https://go-review.googlesource.com/32923Reviewed-by: Robert Griesemer <gri@golang.org>

These are functionality tests, not formatter tests.

I also tested manually that 'go test cmd/go'
without -short still passes.


Change-Id: Id146e1dc3b65e19ea531869725cd0b97f4801b8b
Reviewed-on: https://go-review.googlesource.com/33169
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Previously, `os.Clearenv()` (by way of `syscall.Clearenv`) would simply
set all environment variables' values to `""` rather than actually
unsetting them causing subsequent `os.LookupEnv` calls to return that
they were still set.

Fixes #17902

Change-Id: I54081b4b98665e9a39f55ea7582c8d40bb8a2a22
Reviewed-on: https://go-review.googlesource.com/33168
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

Deadlines have been implemented on Plan 9 in CL 31521.

Enable the following tests:

 - TestServerTimeouts
 - TestOnlyWriteTimeout
 - TestTLSHandshakeTimeout
 - TestIssue4191_InfiniteGetTimeout
 - TestIssue4191_InfiniteGetToPutTimeout

Updates #7237.

Change-Id: If5e75cfaa9133dcf9ce6aac9fc2badafc1612b64
Reviewed-on: https://go-review.googlesource.com/33197
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I3c664201baef6d7dbed94dab63db0ac974bf6817
Reviewed-on: https://go-review.googlesource.com/33198
TryBot-Result: Gobot Gobot <gobot@golang.org>
Run-TryBot: David du Colombier <0intro@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This reverts commit f15915af.

CL 32851 fixed cmd/vet's handling of fmt.Formatter.

Updates #17057.

Change-Id: I3409100d16037645946fe7fe78fbb173e1648494
Reviewed-on: https://go-review.googlesource.com/33166
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Fixes these vet complaints:

net/error_test.go:254: unrecognized printf flag for verb 'T': '#'
os/os_test.go:1067: arg mt for printf verb %d of wrong type: time.Time
runtime/debug/garbage_test.go:83: arg dt for printf verb %d of wrong type: time.Time

Change-Id: I0e986712a4b083b75fb111e687e424d06a85a47b
Reviewed-on: https://go-review.googlesource.com/33167
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Mention that it specifically returns x / 2, and do the same for
EncodedLen.

Change-Id: Ie334f5abecbc487caf4965abbcd14442591bef2a
Change-Id: Idfa413faad487e534489428451bf736b009293d6
Reviewed-on: https://go-review.googlesource.com/33191Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Deadlines have been implemented on Plan 9 in CL 31521.

Enable the following tests:

 - TestReadTimeout
 - TestReadFromTimeout
 - TestWriteTimeout
 - TestWriteToTimeout
 - TestReadTimeoutFluctuation
 - TestVariousDeadlines
 - TestVariousDeadlines1Proc
 - TestVariousDeadlines4Proc
 - TestReadWriteDeadlineRace

Change-Id: I221ed61d55f7f1e4345b37af6748c04e1e91e062
Reviewed-on: https://go-review.googlesource.com/33196
Run-TryBot: David du Colombier <0intro@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates #17057.

Change-Id: I54c838d3a44007d4023754e42971e91bfb5e8612
Reviewed-on: https://go-review.googlesource.com/32851
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>