Fixes #10303.

Change-Id: Ia68d3566ba3ebeea6e18e388446bd9b8c431e156
Reviewed-on: https://go-review.googlesource.com/10814Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I539bdc438f694610a7cd373f7e1451171737cfb3
Reviewed-on: https://go-review.googlesource.com/11084Reviewed-by: Russ Cox <rsc@golang.org>

While we're here, update the documentation and delete variables with no effect.

Change-Id: I4df0d266dff880df61b488ed547c2870205862f0
Reviewed-on: https://go-review.googlesource.com/10790Reviewed-by: Austin Clements <austin@google.com>

A send on an unbuffered channel to a blocked receiver is the only
case in the runtime where one goroutine writes directly to the stack
of another. The garbage collector assumes that if a goroutine is
blocked, its stack contains no new pointers since the last time it ran.
The send on an unbuffered channel violates this, so it needs an
explicit write barrier. It has an explicit write barrier, but not one that
can handle a write to another stack. Use one that can (based on type bitmap
instead of heap bitmap).

To make this work, raise the limit for type bitmaps so that they are
used for all types up to 64 kB in size (256 bytes of bitmap).
(The runtime already imposes a limit of 64 kB for a channel element size.)

I have been unable to reproduce this problem in a simple test program.

Could help #11035.

Change-Id: I06ad994032d8cff3438c9b3eaa8d853915128af5
Reviewed-on: https://go-review.googlesource.com/10815Reviewed-by: Austin Clements <austin@google.com>

Fixes #11201

Change-Id: I80d8fcfcb5c856aaf9d0e73d756d86018e2bec3b
Reviewed-on: https://go-review.googlesource.com/11110Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I21cfea3eadb37904252900324c23e2664b121bbb
Reviewed-on: https://go-review.googlesource.com/11099
Run-TryBot: Andrew Gerrand <adg@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>

Fixes #11216.

Change-Id: Iad1f4894c2258909484eaf975b08e0f47a82788e
Reviewed-on: https://go-review.googlesource.com/11098Reviewed-by: Andrew Gerrand <adg@golang.org>

When reading along the article, the extra code added in the final
version is not explained. The main function calls flag.Parse(), for
example, which will cause an error, unless the readers looks at the
entirety of final.go to see the import added.

The file shown to the users no longer has the extra flags. The testing
code is now in a patch that gets applied to final.go in order to create
final-test.go. This is the file that will be used to test the code,
matching final.go as much as possible.

Change-Id: I022f5f6c88e107c8ba5623661d74a8d260d05266
Reviewed-on: https://go-review.googlesource.com/11061Reviewed-by: Andrew Gerrand <adg@golang.org>

In generateTrace we check that event timestamp is within the interesting range.
Then later in traceContext.time we double check event time.
However, for some events (e.g. emitSlice) we convert time of ev.Link (slice end) rather than ev itself (slice begin).
Slice end can be outside of the interesting time range, and so traceContext.time crashes.
Remove the check in traceContext.time, check in generateTrace loop is sufficient.

Change-Id: If94e93b5653c5816c0a8dcdd920f15df97616835
Reviewed-on: https://go-review.googlesource.com/11100Reviewed-by: Andrew Gerrand <adg@golang.org>

Update to tip to fix #11003 (not possible to select events in chromium).
Fixed #11003

Change-Id: Ibba5d39ca809cfd5cb79c9e6d152b00899d49e08
Reviewed-on: https://go-review.googlesource.com/11062Reviewed-by: Andrew Gerrand <adg@golang.org>

Return io.ErrUnexpectedEOF instead of io.EOF when reading a truncated
data descriptor.

Fixes #11146.

Change-Id: Ia1905955165fd38af3c557d1fa1703ed8be893e2
Reviewed-on: https://go-review.googlesource.com/11070Reviewed-by: Andrew Gerrand <adg@golang.org>

The previous code had a brain fart: it took one of the length prefixes
as an element count, not a length. This didn't actually affect anything
because the loop stops as soon as it finds a hostname element, and the
hostname element is always the first and only element. (No other element
types have ever been defined.)

This change fixes the parsing in case SNI is ever changed in the future.

Fixes #10793.

Change-Id: Iafdf3381942bc22b1f33595315c53dc6cc2e9f0f
Reviewed-on: https://go-review.googlesource.com/11059Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

s/Backtrace/Backtrack/

Change-Id: I062aab18f23f2bc2110cf7210c2e7264747e02cf
Reviewed-on: https://go-review.googlesource.com/11091Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The test fails on Ubuntu Trusty for some reason, probably because of
some set of kernel patches.

Change-Id: I52f7ca50b96fea5725817c9e9198860d419f9313
Reviewed-on: https://go-review.googlesource.com/11055Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>

TBR: bradfitz, adonovan

Change-Id: Ifc8574494848503c979d11e2766ba8da0f374068
Reviewed-on: https://go-review.googlesource.com/11043Reviewed-by: Robert Griesemer <gri@golang.org>

Fixes #10992.

Change-Id: Ia376e4de118993b43e5813da57ab25fea8122048
Reviewed-on: https://go-review.googlesource.com/10476Reviewed-by: Ian Lance Taylor <iant@golang.org>

This was found while fuzzing another program, triggering a panic in
x509.ParseECPrivateKey.

Fixes #11154

Change-Id: Ief35ead38adf14caec4d37b9eacf8a92e67cd1e6
Reviewed-on: https://go-review.googlesource.com/10712Reviewed-by: Adam Langley <agl@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>

When scanning with a width, as in %5s, C skips leading spaces
brefore counting the 5 characters. We should do the same.

Reword the documentation about widths to make this clear.

Fixes #9444

Change-Id: I443a6441adcf1c834057ef3977f9116a987a79cd
Reviewed-on: https://go-review.googlesource.com/10997Reviewed-by: Andrew Gerrand <adg@golang.org>

Running -copylocks over a large corpus generates 1507 warnings.
Of those, only 3 are from the new anonymous function check,
but they are all bugs.

Fixes #10927.

Change-Id: I2672f6871036bed711beec5f88bc39aa8b3b6a94
Reviewed-on: https://go-review.googlesource.com/11051Reviewed-by: Rob Pike <r@golang.org>

This is needed for code that relies on having the correct file set
when parsing an expression only. There's currently no other way to
get to the file set otherwise or to invoke the parser correctly to
work on an expression only with a given file set.

Change-Id: I325f174cb34b69284e627f59fe8334efa4eaa45c
Reviewed-on: https://go-review.googlesource.com/10998Reviewed-by: Alan Donovan <adonovan@google.com>

Change-Id: I412621497902fa36f4939df392b10ca7040fc36e
Reviewed-on: https://go-review.googlesource.com/11003Reviewed-by: Ian Lance Taylor <iant@golang.org>

Linux 3.19 made a change in the handling of setgroups and the 'gid_map' file to
address a security issue.
The upshot of the 3.19 changes is that in order to update the 'gid_maps' file,
use of the setgroups() system call in this user namespace must first be disabled
by writing "deny" to one of the /proc/PID/setgroups files for this namespace.

Also added tests for remapping uid_map and gid_map inside new user
namespace.

Fixes #10626

Change-Id: I4d2539acbab741a37092d277e10f31fc39a8feb7
Reviewed-on: https://go-review.googlesource.com/10670
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I9d3253b80508d733053789d6cb9645e029bf52e4
Reviewed-on: https://go-review.googlesource.com/10927Reviewed-by: Robert Griesemer <gri@golang.org>

Sanity check the pax-header size field before using it.

Fixes #11167.

Change-Id: I9d5d0210c3990e6fb9434c3fe333be0d507d5962
Reviewed-on: https://go-review.googlesource.com/10954Reviewed-by: David Symonds <dsymonds@golang.org>

Change-Id: Ib52854169f3dd18f54d3ae9263c897d3f45ea869
Reviewed-on: https://go-review.googlesource.com/10982Reviewed-by: Andrew Gerrand <adg@golang.org>

The documentation says that newlines behave like this:

Scan etc.: newlines are spaces.
Scanln etc.: newlines terminate the scan.
Scanf etc.: newlines must match in input and format.

The code did not implement this behavior in all cases,
especially for Scanf. Make it behave:

- Fix the handling of spaces and newlines in ss.Advance.
The code is longer but now behaves as it should.

- Delete the reuse of the current ss in newScanState.
There is really no need, since it's only used in recursive
calls to Scan etc., and the flags are likely wrong. Simpler
just to allocate a new one every time, and likelier to
be correct.

Fixes #10862.

Change-Id: If060ac021017346723b0d62de4e5a305da898f68
Reviewed-on: https://go-review.googlesource.com/10991Reviewed-by: Andrew Gerrand <adg@golang.org>

Fixes #11050.

Change-Id: Ie5d16960a1f829af947d82a63fe414924cd02ff6
Reviewed-on: https://go-review.googlesource.com/10666Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I22ac23e7e180071de4443291e0a644675200d642
Reviewed-on: https://go-review.googlesource.com/10950Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

The command "go tool pprof help" does not work:

    $ go tool pprof help
    open help: no such file or directory

The right command is "go tool pprof -h".

Change-Id: Icef5d4ab76774905854e46665ac1166d26d35f46
Reviewed-on: https://go-review.googlesource.com/10970Reviewed-by: Ian Lance Taylor <iant@golang.org>

I would like to re-apply reverted http://golang.org/cl/8523.
Reverted tests still fail in some environments (see issue #10360).
It is easier to run tests selectively when in Go.
This CL prepares for the changes.

Updates #10360

Change-Id: Iefeb1d71cb3d1cfa653a6ccd9f6e35686c0c5b24
Reviewed-on: https://go-review.googlesource.com/10608Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This CL makes CL 10682 work on windows.

Fixes #9645 (again)

Change-Id: Ie9b9af8b041c483a236b46adad4a50aa6e598c92
Reviewed-on: https://go-review.googlesource.com/10930Reviewed-by: Ian Lance Taylor <iant@golang.org>

Suggested by mdempsky (see also issue #11161).

Change-Id: I1ab28febe19b7a092029499015073ce8749b4d99
Reviewed-on: https://go-review.googlesource.com/10960Reviewed-by: Ian Lance Taylor <iant@golang.org>

As these tests were originally in bash, they are not designed to be
particularly hermetic.  This CL adds various protective mechanisms to
try to catch cases where the tests can not run in parallel.

Change-Id: I983bf7b6ffba04eda58b4939eb89b0bdfcda8eff
Reviewed-on: https://go-review.googlesource.com/10911Reviewed-by: Andrew Gerrand <adg@golang.org>

Examine the mtime of an existing file to guess a length of time to
sleep to ensure a different mtime.

Change-Id: I9e8b5c9486f5c3c8bd63125e3ed4763ce1ba767d
Reviewed-on: https://go-review.googlesource.com/10932
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This avoids a race with gcmarkwb_m that was leading to faults.

Fixes #10212.

Change-Id: I6fcf8d09f2692227063ce29152cb57366ea22487
Reviewed-on: https://go-review.googlesource.com/10816
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

Forgot this one in my previous commit.

Change-Id: Ief089e99bdad24b3bcfb075497dc259d06cc727c
Reviewed-on: https://go-review.googlesource.com/10913Reviewed-by: David Crawshaw <crawshaw@golang.org>

Change-Id: Idc4a7fdb561ba5b3b52094d895deaf3fcdf475bf
Reviewed-on: https://go-review.googlesource.com/10716Reviewed-by: Andrew Gerrand <adg@golang.org>

Might get the Android build passing, or at least going further.

Change-Id: I08f97156a687abe5a3d95203922f4ffd84fbb212
Reviewed-on: https://go-review.googlesource.com/10924Reviewed-by: David Crawshaw <crawshaw@golang.org>

These were found by grepping the comments from the go code and feeding
the output to aspell.

Change-Id: Id734d6c8d1938ec3c36bd94a4dbbad577e3ad395
Reviewed-on: https://go-review.googlesource.com/10941Reviewed-by: Aamir Khan <syst3m.w0rm@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This issue was fixed in CL 10900.

Change-Id: I88f107cb73c8a515f39e02506ddd2ad1e286b1fb
Reviewed-on: https://go-review.googlesource.com/10940
Run-TryBot: David du Colombier <0intro@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>