Update OpenBSD runtime to use the new version of the sys___tfork
syscall and switch TLS initialisation from sys_arch to sys___set_tcb
(note that both of these syscalls are available in OpenBSD 5.2).

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6843058

Fixes #4399.

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6845053

Putting aside the unguarded access to fd.sysfile, the condition will never be true as fd.incref above handles the closed condition.

R=mikioh.mikioh, dvyukov
CC=golang-dev
https://golang.org/cl/6845062

R=fullung, bradfitz, dave
CC=golang-dev
https://golang.org/cl/6846081

The exp/types packages does not support the gccgo export data
format.  At some point it should, but not yet.

R=gri, bradfitz, r, iant, dsymonds
CC=golang-dev
https://golang.org/cl/6854068

Also enables TestDirWindows test on windows.

Fixes #4401.

R=golang-dev, bradfitz
CC=golang-dev, krautz
https://golang.org/cl/6847072

Noticed this while closing tabs. Yesterday I thought I could
ignore this garbage and hope that a fix for issue 2205 handled
it, but I just realized that's the opposite case,
string->[]byte, whereas this is []byte->string.  I'm having a
hard time convincing myself that an Issue 2205-style fix with
static analysis and faking a string header would be safe in
all cases without violating the memory model (callee assumes
frozen memory; are there non-racy ways it could keep being
modified?)

R=dsymonds
CC=dave, gobot, golang-dev
https://golang.org/cl/6850067

Fixes #4411

R=dsymonds
CC=gobot, golang-dev
https://golang.org/cl/6854067

Saves 5 seconds on my machine. If Issue 4380 is fixed this
clone can be removed.

Update #4380

R=golang-dev, remyoudompheng, minux.ma, gri
CC=golang-dev
https://golang.org/cl/6845058

There's no good reason to make any printer state adjustments
simply because the file name in node position information has
changed. Eliminate the relevant code.

R=r
CC=golang-dev
https://golang.org/cl/6856054

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6853069

Don't rely on finding cmd.exe in a particular spot.

Fixes #4401

R=golang-dev, krautz
CC=golang-dev
https://golang.org/cl/6842066

This enables to loop over some goroutines, e.g. to print the
backtrace of goroutines 1 to 9:

        set $i = 1
        while $i < 10
        printf "backtrace of goroutine %d:\n", $i
        goroutine $i++ bt
        end

R=lvd, lvd
CC=golang-dev
https://golang.org/cl/6843071

Fixes #4405.

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6855060

Update #4401

R=golang-dev, mattn.jp
CC=golang-dev
https://golang.org/cl/6853067

Fixes #4369.

Remove the check for fd.sysfd < 0, the first line of fd.accept() tests if the fd is open correctly and will handle the fd being closed during accept.

R=dvyukov, bradfitz
CC=golang-dev
https://golang.org/cl/6843076

This is part 1 of a series of proposals to fix issue 4369.

In resolving issue 3507 it was decided not to nil out the inner conn.fd field to avoid a race. This implies the checks for fd == nil inside incref/decref are never true.

Removing this logic removes one source of errClosing error values, which affects issue 4373 and moves towards bradfitz's request that fd.accept() return io.EOF when closed concurrently.

Update #4369.
Update #4373.

R=mikioh.mikioh, bradfitz, dvyukov, rsc
CC=golang-dev
https://golang.org/cl/6852057

Enable warnings as errors during the cgo portion of runtime/cgo. iant requested that the list of flags match cmd/dist/build.c, but I would like to avoid the set of disabled warnings if possible.

ref: https://groups.google.com/d/topic/golang-nuts/TrCoVzIIG4M/discussion

requires: 6843061

R=minux.ma, iant
CC=golang-dev
https://golang.org/cl/6852055

Fixes #4400.

R=r, mirtchovski
CC=golang-dev
https://golang.org/cl/6782084

R=dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6854056

Replacement CL for 6813061; thanks to minux for prototyping.

Fixes #4300.

R=minux.ma
CC=golang-dev
https://golang.org/cl/6782082

now we load jquery in its parent--godoc.html.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6814112

Write() can safely use uint32 loads when input is aligned.
Also add test and benchmarks for unaligned writes.

Benchmark result obtained by Dave Cheney on ARMv5TE @ 1.2GHz:
benchmark                       old ns/op    new ns/op    delta
BenchmarkHash8Bytes                  4104         3417  -16.74%
BenchmarkHash1K                     22061        11208  -49.20%
BenchmarkHash8K                    146630        65148  -55.57%
BenchmarkHash8BytesUnaligned         4128         3436  -16.76%
BenchmarkHash1KUnaligned            22054        21473   -2.63%
BenchmarkHash8KUnaligned           146658       146909   +0.17%

benchmark                        old MB/s     new MB/s  speedup
BenchmarkHash8Bytes                  1.95         2.34    1.20x
BenchmarkHash1K                     46.42        91.36    1.97x
BenchmarkHash8K                     55.87       125.74    2.25x
BenchmarkHash8BytesUnaligned         1.94         2.33    1.20x
BenchmarkHash1KUnaligned            46.43        47.69    1.03x
BenchmarkHash8KUnaligned            55.86        55.76    1.00x

R=golang-dev, dave, bradfitz
CC=golang-dev
https://golang.org/cl/6782072

also fix one out-of-date comment in cmd/ld/pe.c as well.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/6843061

Fixes #4393.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6854058

All of the errors were located using "go vet ./..." in "src/pkg".

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6856056

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6847063

ASTs may be created by various tools and built from nodes of
different files. An incorrectly constructed AST will likely
not print at all, but a (structurally) correct AST with bad
position information should still print structurally correct.

One heuristic used was to reset indentation when the filename
in the position information of nodes changed. However, this
can lead to wrong indentation for structurally correct ASTs.

Fix: Don't change the indentation in this case.

Related to issue 4300.

R=r
CC=golang-dev
https://golang.org/cl/6849066

ast.Walk needs to check for it or it will crash.

R=r
CC=golang-dev
https://golang.org/cl/6852062

This significantly decreases amount of shadow memory
mapped by race detector.
I haven't tested on Windows, but on Linux it reduces
virtual memory size from 1351m to 330m for fmt.test.
Fixes #4379.

R=golang-dev, alex.brainman, iant
CC=golang-dev
https://golang.org/cl/6849057

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6843069

Add support for loading X.509 key pairs that consist of a certificate
with an EC public key and its corresponding EC private key.

R=agl
CC=golang-dev
https://golang.org/cl/6776043

Reincarnation of https://golang.org/cl/6817086 (sent from another account).
It is ugly because sync.Once will cause allocation of a closure.
Fixes #4343.

R=golang-dev, bradfitz, alex.brainman
CC=golang-dev
https://golang.org/cl/6856046

compare incrementally. Also modified collation API to be more high-level
by removing the need for an explicit buffer to be passed as an argument.
This considerably speeds up Compare and CompareString.  This change also eliminates
the need to reinitialize the normalization buffer for each use of an iter. This
also significantly improves performance for Key and KeyString.

R=r, rsc
CC=golang-dev
https://golang.org/cl/6842050

API change.

R=golang-dev, r, iant, rsc
CC=golang-dev
https://golang.org/cl/6844048

R=golang-dev, bradfitz, ftrvxmtrx, franciscossouza, r, minux.ma
CC=golang-dev
https://golang.org/cl/6843044

Fixes #4386.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6854050

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6782075

R=golang-dev, dave, jsing
CC=golang-dev
https://golang.org/cl/6847051

Revert to the shell builtin to avoid hosts that do not have /usr/bin/time.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6848054