cmd/gc: add //go:nowritebarrier to diagnose unintended write barriers

//go:nowritebarrier can only be used in package runtime.
It does not disable write barriers; it is an assertion, checked
by the compiler, that the following function needs no write
barriers.

Change-Id: Id7978b779b66dc1feea39ee6bda9fd4d80280b7c
Reviewed-on: https://go-review.googlesource.com/1224
Reviewed-by: Rick Hudson <rlh@golang.org>
.gitattributes: prevent all magic line ending changes

Fixes #9281

Change-Id: Id060e9cbad086c994ec74b240f5c61e971e5690b
Reviewed-on: https://go-review.googlesource.com/1490
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
build: change all.bash output to be more markdown-friendly

People keep pasting all.bash output into GitHub bugs, which turns
the # lines into <h1> headlines. Add some more #s so that the
bug reports are more readable. Not ideal but seems like the best
of a few bad options.

Change-Id: I4c69930ec304b2d504d7cd66221281a8577b87ae
Reviewed-on: https://go-review.googlesource.com/1286
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
net/http: fix timer leak in Transport when using ResponseHeaderTimeout

Fixes #9104

Change-Id: Ide5ac70215d73278e6910f5b9c7687ad7734c0be
Reviewed-on: https://go-review.googlesource.com/1530
Reviewed-by: David Symonds <dsymonds@golang.org>
net/http: document Response.Body Read+Close interaction with keep-alive

Fixes #5645

Change-Id: Ifb46d6faf7ac838792920f6fe00912947478e761
Reviewed-on: https://go-review.googlesource.com/1531
Reviewed-by: David Symonds <dsymonds@golang.org>
misc/chrome/gophertool: update URLs from code.google.com to new homes

Change-Id: I46bf9f1b84a331cabce2d3417b2b59ccb83d00fa
Reviewed-on: https://go-review.googlesource.com/1532
Reviewed-by: David Symonds <dsymonds@golang.org>
encoding/json: mention that the "string" tag applies to booleans

Fixes #9284

Change-Id: I0410a9ed82b861686a0a986c9ca4eeeacac8f296
Reviewed-on: https://go-review.googlesource.com/1534
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
doc: replace hg commands with git commands in release.html

Change-Id: I5cc4740a858c40d820eeb7c00cf0508b20807c90
Reviewed-on: https://go-review.googlesource.com/1533
Reviewed-by: Andrew Gerrand <adg@golang.org>
misc/makerelease: remove mercurial-specific special case

Change-Id: I2ae40e63bc78f3b6e4eb68ccbc928368db1e606f
Reviewed-on: https://go-review.googlesource.com/1535
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
misc/makerelease: fix build

Fixes #9308

Change-Id: I0121adbbecc893eb93afc3321ecff97ea146d150
Reviewed-on: https://go-review.googlesource.com/1560
Reviewed-by: Andrew Gerrand <adg@golang.org>
cmd/go: handle \r in input text

Remove carriage returns from //go:generate lines.
Carriage returns are the predecessor of BOMs and still
live on Windows.

Fixes #9264

Change-Id: I637748c74335c696b3630f52f2100061153fcdb4
Reviewed-on: https://go-review.googlesource.com/1564
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
runtime: shrink initial arena if reservation fails

Fixes #9311

Change-Id: I2f142e65a54c0391084316d79a42714ba42dd8b9
Reviewed-on: https://go-review.googlesource.com/1514
Reviewed-by: Keith Randall <khr@golang.org>
runtime: if key type is reflexive, don't call equal(k, k)

Most types are reflexive (k == k for all k of type t), so don't
bother calling equal(k, k) when the key type is reflexive.

Change-Id: Ia716b4198b8b298687843b94b878dbc5e8fc2c65
Reviewed-on: https://go-review.googlesource.com/1480
Reviewed-by: Russ Cox <rsc@golang.org>
net/textproto: turn an ancient DoS BUG annotation into a comment

Actually fixing this "bug" would be weird, since io.LimitReader already
does what we need, as demonstrated by net/http's use.

Thanks to @davidfstr for pointing this out.

Change-Id: If707bcc698d1666a369b39ddfa9770685fbe3879
Reviewed-on: https://go-review.googlesource.com/1579
Reviewed-by: Rob Pike <r@golang.org>
doc: propose $GOPATH as $HOME/work, not $HOME/go

Related to issue #9228

Change-Id: I0819e657f6393788754d1412f9c2126a170d4cf1
Reviewed-on: https://go-review.googlesource.com/1577
Reviewed-by: Rob Pike <r@golang.org>
crypto/rand: handle EAGAIN reads from /dev/urandom

Fixes #9205

Change-Id: Iacd608ba43332008984aa8ece17dcb5757f27b3f
Reviewed-on: https://go-review.googlesource.com/1611
Reviewed-by: Ian Lance Taylor <iant@golang.org>
runtime: gofmt

Fixes #9339

Change-Id: I22faf2593cb73f42612c2c2bfe38de001fb2746b
Reviewed-on: https://go-review.googlesource.com/1630
Reviewed-by: Andrew Gerrand <adg@golang.org>
net/http: make Transport send 'Connection: close' when DisableKeepAlives

No bug was open, but I found an old email to myself to investigate
when I suspected this was happening.

Change-Id: Icedefec6f15a000eaabb2693b0640b3b6c8bf82c
Reviewed-on: https://go-review.googlesource.com/1578
Reviewed-by: Andrew Gerrand <adg@golang.org>
net/http/httputil: don't use DisableKeepAlives in DumpRequestOut, fix build

I broke the build in https://golang.org/change/207950a when I made
http.Transport send "Connection: close" request headers when
DisableKeepAlives was set true because I didn't run all the tests
before submitting.

httputil.DumpRequestOut used Transport to get its output, and used it
with DisableKeepAlives, so this changed the output.

Rather than updating golden data in our tests (because surely others
depend on the exact bytes from these in their tests), switch to not
using DisableKeepAlives in DumpRequestOut instead, so the output is
the same as before.

Change-Id: I9fad190be8032e55872e6947802055a6d65244df
Reviewed-on: https://go-review.googlesource.com/1632
Reviewed-by: Andrew Gerrand <adg@golang.org>
runtime: fix deadlock in runtime.Stack

It shouldn't semacquire() inside an acquirem(), the runtime
thinks that means deadlock.  It actually isn't a deadlock, but it
looks like it because acquirem() does m.locks++.

Candidate for inclusion in 1.4.1.  runtime.Stack with all=true
is pretty unuseable in GOMAXPROCS>1 environment.

fixes #9321

Change-Id: Iac6b664217d24763b9878c20e49229a1ecffc805
Reviewed-on: https://go-review.googlesource.com/1600
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>