In writebarrier phase, a chain of StoreWBs is rewritten to branchy
code to invoke write barriers, and the last store in the chain is
spliced into a Phi op to join the memory of the two branches. We
must find the last store explicitly, since the values are not
scheduled and they may not come in dependency order.

Fixes #18169.

Change-Id: If547e3c562ef0669bc5622c1bb711904dc36314d
Reviewed-on: https://go-review.googlesource.com/33915
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>

Fixes #18180.

Change-Id: I7006fe6cf08139e5aaaf35412b962a4e82109f59
Reviewed-on: https://go-review.googlesource.com/33898Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

CL https://go-review.googlesource.com/33899 added
application/json as a mimeType for valid JS. Let's
lock that fix in with a test.

Updates #18159

Change-Id: Ic4dfd8929aebfc5410f796688f081ca06630f672
Reviewed-on: https://go-review.googlesource.com/33901
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Nodir Turakulov <nodir@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

Since ffd1c781 HTML templates check
MIME type in the "type" attribute of "script" tag to decide if contents
should be escaped as JavaScript. The whitelist of MIME types did not
include application/json. Include it in this CL.

Fixes #18159

Change-Id: I17a8a38f2b7789b4b7e941d14279de222eaf2b6a
Reviewed-on: https://go-review.googlesource.com/33899Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

In https://golang.org/cl/33804 I screwed up a GOOS == "windows"
check into a bogus comparison against GOARCH == "windows".

But turns out the builders are happy anyway, so remove the windows
special case.

Change-Id: I820b1d49d5b3e8cbffe4516fc39f514326dc39f8
Reviewed-on: https://go-review.googlesource.com/33893
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Updates #18173

Change-Id: I4c667c89ba3bf16433a4cef7cb01054f1798667d
Reviewed-on: https://go-review.googlesource.com/33892
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I9277e869e171d9e051ff9a70ac578b8127fa74f8
Reviewed-on: https://go-review.googlesource.com/33897
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I5e33db9e63f70706882b85ab124a48509797b05a
Reviewed-on: https://go-review.googlesource.com/33790
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: If8200e54b3650f789c5312f10cce32201a199b80
Reviewed-on: https://go-review.googlesource.com/33775Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Internal linking on an ELF system creates two reloc sections, which
must be adjacent. The default is to base section alignment on the
section size, but doing that for ELF reloc sections can introduce a
gap. Set the reloc section alignment explicitly to avoid that.

Fixes #18044.

Change-Id: I8ccc131e60937d30c5f715a34c7803258833fc2f
Reviewed-on: https://go-review.googlesource.com/33872
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

And link it.

Change-Id: Ic0105468435299fb1638f86522f4f3ce417ec1c2
Reviewed-on: https://go-review.googlesource.com/33871Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I8a3ce0fa513ff943009c5669531132cd23ecf155
Reviewed-on: https://go-review.googlesource.com/33870Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Fixes #18154.

Change-Id: I1836b63a380b7fc2f9965e909859b1a89a3ae5d5
Reviewed-on: https://go-review.googlesource.com/33856
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Previously the docs suggested downloading 1.7.2 (no good) or 1.7.3 (has
security flaw).

Change-Id: Ifabe85908df8d6591c0957ef4bb1b800fc145793
Reviewed-on: https://go-review.googlesource.com/33808Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Reversion CL was 33770.

Change-Id: I119f26796bb2b66d302e132dd118847ac3bd6633
Reviewed-on: https://go-review.googlesource.com/33807Reviewed-by: Ian Lance Taylor <iant@golang.org>

The introduction of NoBody and related body-peeking bug fixes also
added a "cleanup" of sorts to make NewRequest set the returned
Requests's ContentLength to -1 when it didn't know it.

Using -1 to mean unknown is what the documentation says, but then
people apparently(?) depended on it being zero so they could do this:

    req, _ := http.NewRequest("POST", url, someNonNilReaderWithUnkownSize)
    req.Body = nil
    res, err := http.DefaultClient.Do(req)

... and expect it to work.

After https://golang.org/cl/31445 the contrived(?) code above stopped
working, since Body was nil and ContentLength was -1, which has been
disallowed since Go 1.0.

So this restores the old behavior of NewRequest, not setting it to -1.
That part of the fix isn't required as of https://golang.org/cl/31726
(which added NoBody)

I still don't know whether this bug is hypothetical or actually
affected people in practice.

Let's assume it's real for now.

Fixes #18117

Change-Id: I42400856ee92a1a4999b5b4668bef97d885fbb53
Reviewed-on: https://go-review.googlesource.com/33801
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Per recommendation from imgtec.com folk.

Change-Id: I9b6f30572f257acce59842ac55362f52fe36c5ab
Reviewed-on: https://go-review.googlesource.com/33804Reviewed-by: Ian Lance Taylor <iant@golang.org>

Also change a couple of `go get` tests to use MustHaveExternalNetwork
rather than checking testing.Short.

Change-Id: I98ccc05b8b0354f1b7486e28dac5f8341c342a07
Reviewed-on: https://go-review.googlesource.com/33802
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This file is entirely about the implementation of LineHist, and I can
never remember which generic filename in cmd/internal/obj has it.
Rename to line.go to match the already existing line_test.go.

Change-Id: Id01f3339dc550c9759569d5610d808b17bca44d0
Reviewed-on: https://go-review.googlesource.com/33803Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Ensure documented behavior of returning ErrTxDone if the Tx has
already been committed or rolled back.

Fixes #18147

Change-Id: I07dc75bef4dbd4dd88dd252c96dc8ab99f28c00e
Reviewed-on: https://go-review.googlesource.com/33793
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

This was a regression from 1.7. See the issue for details.

Fixes #18149.

Change-Id: Ic8f5a35d14edf9254b1275400316cff7aff32a27
Reviewed-on: https://go-review.googlesource.com/33799
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: I853da2666ed2b5f8b80bd9438f8c352f233b9c89
Reviewed-on: https://go-review.googlesource.com/33800Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

NoBody is new in Go 1.8.

Found while investigating #18117

Change-Id: I6bda030f358e2270f090d108cb3a89c8a2665fcb
Reviewed-on: https://go-review.googlesource.com/33714
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I0728afe6a1d1e0aee4701e51a5548fa9fd637b66
Reviewed-on: https://go-review.googlesource.com/33795Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I3dd1513e927733ce5c63928da772cb81760ba869
Reviewed-on: https://go-review.googlesource.com/31442Reviewed-by: Andrew Gerrand <adg@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-on: https://go-review.googlesource.com/33794

Change-Id: Iacced25363f54ee2cc1e00a71605dba7fb447162
Reviewed-on: https://go-review.googlesource.com/33772Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

func f() {
    g()
}

We mistakenly don't add a frame pointer for f.  This means f
isn't seen when walking the frame pointer linked list.  That
matters for kernel-gathered profiles, and is an impediment for
issues like #16638.

To fix, allocate a stack frame even for otherwise frameless functions
like f.  It is a bit tricky because we need to avoid some runtime
internals that really, really don't want one.

No test at the moment, as only kernel CPU profiles would catch it.
Tests will come with the implementation of #16638.

Fixes #18103

Change-Id: I411206cc9de4c8fdd265bee2e4fa61d161ad1847
Reviewed-on: https://go-review.googlesource.com/33754
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

Darwin separately stores bits indicating whether a root certificate
should be trusted; this changes Go to read and use those when
initializing SystemCertPool.

Unfortunately, the trust API is very slow. To avoid a delay of up to
0.5s in initializing the system cert pool, we assume that
the trust settings found in kSecTrustSettingsDomainSystem will always
indicate trust. (That is, all root certs Apple distributes are trusted.)
This is not guaranteed by the API but is true in practice.

In the non-cgo codepath, we do not have that benefit, so we must check
the trust status of every certificate. This causes about 0.5s of delay
in initializing the SystemCertPool.

On OS X 10.11 and older, the "security" command requires a certificate
to be provided in a file and not on stdin, so the non-cgo codepath
creates temporary files for each certificate, further slowing initialization.

Updates #18141.

Change-Id: If681c514047afe5e1a68de6c9d40ceabbce54755
Reviewed-on: https://go-review.googlesource.com/33721
Run-TryBot: Quentin Smith <quentin@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Now the net tests pass with -gcflags '-l=4'.

Fixes #18125.

Change-Id: I4e3a46eb0cb3a93b203e74f5bc99c5822331f535
Reviewed-on: https://go-review.googlesource.com/33722Reviewed-by: Keith Randall <khr@golang.org>

... so we don't have to export gosym.PCValue.

Change-Id: Ie8f196d5e5ab63e3e69d1d7b4bfbbf32b7b5e4f5
Reviewed-on: https://go-review.googlesource.com/33791
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Fixes #18128

Change-Id: I5530c9d774a1e398cd759a05bbf308e6e42f0007
Reviewed-on: https://go-review.googlesource.com/33810Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Reverts https://golang.org/cl/23672 and tweaks the text to clarify
HTTP/2 request cancelations also cancel the context (not just closing
the TCP conn).

Fixes #18143

Change-Id: I9f838e09b906d455c98f676e5bc5559f8f7ecb17
Reviewed-on: https://go-review.googlesource.com/33769Reviewed-by: Chris Broadfoot <cbro@golang.org>

Require parameter names to not begin with a symbol.

Change-Id: I5dfe9d4e181f0daf71dad2f395aca41c68678cbe
Reviewed-on: https://go-review.googlesource.com/33493Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Commit 303b69fe packed bitvectors more tightly, but missed a comment
describing their old layout. Update that comment.

Change-Id: I095ccb01f245197054252545f37b40605a550dec
Reviewed-on: https://go-review.googlesource.com/33718Reviewed-by: Matthew Dempsky <mdempsky@google.com>

And reflow paragraph while I'm at it.

Change-Id: Ia13bb364783790fbd9f8b69ef268f8a4b71679cb
Reviewed-on: https://go-review.googlesource.com/33767Reviewed-by: Chris Broadfoot <cbro@golang.org>

Updates #17929

Change-Id: I03b8847384c6cd8c43fe8bf2d75cd26db7063b8b
Reviewed-on: https://go-review.googlesource.com/33762Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>

Fixes #18135

Change-Id: I54ef9d6fc804d0fb77b729a04367a138e40f9ddf
Reviewed-on: https://go-review.googlesource.com/33766Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This reverts commit d24b57a6.

Reason for revert: Further complications arised (issue 18100). We'll try again in Go 1.9.

Change-Id: I5ca93d2643a4be877dd9c2d8df3359718440f02f
Reviewed-on: https://go-review.googlesource.com/33770
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>

Updates #17082.

Change-Id: I0bf330d1a1ebb7e31e42d03287160b474522c332
Reviewed-on: https://go-review.googlesource.com/33455Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

so that our release note can reference a simple command to check if
the processor implements ARMv6K or not.

Updates #17082.

Change-Id: I9ca52051e5517394a7cd6b778fb822c3ee435f84
Reviewed-on: https://go-review.googlesource.com/33686
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>