Fixes #4690

R=golang-dev, alex.brainman, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7181052

BenchmarkString before:

        11990 ns/op            1621 B/op         73 allocs/op

Using bytes.Buffer:

        8774 ns/op            1994 B/op         40 allocs/op

I also tried making a version of escape() that writes directly to the
bytes.Buffer, but it only saved 1 alloc/op and increased CPU time by
about 10%. Didn't seem worth the extra code path.

R=bradfitz
CC=golang-dev
https://golang.org/cl/7182050

Parse("file:///foo") previously returned a URL with Scheme "file"
and Path "///foo". Now it returns a URL with Path "/foo",
such that
        &URL{Scheme: "file", Path: "/foo"}.String() == "file:///foo"

This means that parsing and stringifying the URL "file:/foo"
returns "file:///foo", technically a regression but one that only
affects a corner case.

Fixes #4189.

R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7135051

Fixes #3428.

R=dave, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7129048

This proposal adds two methods to *testing.T, Skip(string) and Skipf(format, args...). The intent is to replace the existing log and return idiom which currently has 97 cases in the standard library. A simple example of Skip would be:

func TestSomethingLong(t *testing.T) {
        if testing.Short() {
                t.Skip("skipping test in short mode.")
                // not reached
        }
        ... time consuming work
}

Additionally tests can be skipped anywhere a *testing.T is present. An example adapted from the go.crypto/ssh/test package would be:

// setup performs some before test action and returns a func()
// which should be defered by the caller for cleanup.
func setup(t *testing.T) func() {
        ...
        cmd := exec.Command("sshd", "-f", configfile, "-i")
        if err := cmd.Run(); err != nil {
                t.Skipf("could not execute mock ssh server: %v", err)
        }
        ...
        return func() {
                // stop subprocess and cleanup
        }
}

func TestDialMockServer(t *testing.T) {
        cleanup := setup(t)
        defer cleanup()
        ...
}

In verbose mode tests that are skipped are now reported as a SKIP, rather than PASS.

Link to discussion: https://groups.google.com/d/topic/golang-nuts/BqorNARzt4U/discussion

R=adg, rsc, r, n13m3y3r
CC=golang-dev, minux.ma
https://golang.org/cl/6501094

Go 1.0 behavior was to create an UnmarshalFieldError when a json value name matched an unexported field name. This error will no longer be created and the field will be skipped instead.

Fixes #4660.

R=adg, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7139049

It wasn't removing names from func parameters for func types,
and it was handling "a, b string" as "string", not "string, string".

Fixes #4688

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7181051

The Plan 9 compilers complain about not
having type information for the function,
which sets off type signature problems
during the linking stage.

R=rsc, ality, iant
CC=golang-dev
https://golang.org/cl/7058054

R=minux.ma, dave, rsc
CC=golang-dev
https://golang.org/cl/7064055

On NetBSD routing sockaddrs for interface address contain sockaddr_dl.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/7085064

Delete various complications left over from an earlier reflect API.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7124063

Before:
$ go list -f '{{range .Deps}}{{println $.Name .}}{{end}}' math time
math runtime
math unsafe

time errors
time runtime
time sync
time sync/atomic
time syscall
time unsafe

$

After:
$ go list -f '{{range .Deps}}{{println $.Name .}}{{end}}' math time
math runtime
math unsafe
time errors
time runtime
time sync
time sync/atomic
time syscall
time unsafe
$

R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7130052

All packages place testdata in a specific directory with the name
"testdata". The mime and strconv packages have been updated to use
the same convention.

mime: Move "mime/test.types" to "mime/testdata/test.types". Update test
code accordingly.

strconv: Move "strconv/testfp.txt" to "strconv/testdata/testfp.txt".
Update test code accordingly.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7098072

This fixes the incorrect unix timestamp of the standard time and adds
an example for (Time) Format to clarify how timezones work in format strings.

Fixes #4364.

R=golang-dev, remyoudompheng, kevlar, rsc
CC=golang-dev
https://golang.org/cl/7069046

R=golang-dev, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7133048

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7184046

Offsets for return values from seek were miscalculated
and a translation from 32-bit code for error handling
was incorrect.

R=rsc, rminnich, npe
CC=golang-dev
https://golang.org/cl/7181045

R=golang-dev, minux.ma, bradfitz, adg
CC=golang-dev
https://golang.org/cl/7134056

Previously, Go TLS servers always took the client's preferences into
account when selecting a ciphersuite. This change adds the option of
using the server's preferences, which can be expressed by setting
tls.Config.CipherSuites.

This mirrors Apache's SSLHonorCipherOrder directive.

R=golang-dev, nightlyone, bradfitz, ality
CC=golang-dev
https://golang.org/cl/7163043

Currently it's summed to mark phase.
The change makes it easier to diagnose long stop-the-world phases.

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7182043

Fixes #4682.

R=golang-dev, adg, dave
CC=golang-dev
https://golang.org/cl/7094062

1. note that to use C.free <stdlib.h> must be included
2. can also extract errno from a void C function

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6935045

sizeof(Adr) from 24 bytes down to 20 bytes.
sizeof(Prog) from 84 bytes down to 76 bytes.

5l linking cmd/godoc statistics:
Before:
Maximum resident set size (kbytes): 106668
After:
Maximum resident set size (kbytes):  99412

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7100059

so that the user don't need to decipher something like this:
template: main:1: expected %!s(parse.itemType=14) in end; got "|"
now they get this:
template: main:1: unexpected "|" in end

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7128054

R=golang-dev, krautz, rsc
CC=golang-dev
https://golang.org/cl/7157044

I messed this up from the beginning. The receiver isn't a pointer so
setting Err is useless. In order to maintain the API, just remove the
superfluous code.

Fixes #4657.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7161043

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/7172044

Prog
* Remove the unused Prog* dlink
* note that align is also unused, but removing it does not help due to alignment issues.

Saves 4 bytes, sizeof(Prog): 84 => 80.

Sym
* Align {u,}char fields on word boundaries

Saves 4 bytes, sizeof(Sym): 136 => 132.

Tested on linux/arm and freebsd/arm.

R=minux.ma, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7106050

R=golang-dev, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7141062

Fortunately we have never seen the panic on sockaddrToTCP
in the past year.

««« original CL description
net: panic if sockaddrToTCP returns nil incorrectly
Part of diagnosing the selfConnect bug
TBR=dsymonds

R=golang-dev
CC=golang-dev
https://golang.org/cl/5687057
»»»

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7137063

mal() returns zeroed memory, so zeroing these fields is redundant.

R=golang-dev, bradfitz, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/7096049

cmd/8g/gsubr.c: unreachable code
cmd/8g/reg.c: overspecifed class
cmd/dist/plan9.c: unused parameter
cmd/gc/fmt.c: stkdelta is now a vlong
cmd/gc/racewalk.c: used but not set

R=golang-dev, seed, rsc
CC=golang-dev
https://golang.org/cl/7067052

The FmtLong flag should only be used with the %D verb
when printing an ATEXT Prog. It was erroneously used
for every Prog except ADATA. This caused a preponderance
of exclamation points, "!!", in the assembly listings.

I also cleaned up the code so that the list.c files look
very similar. Now the real differences are easily spotted
with a simple diff.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7128045

R=rsc
CC=golang-dev, mdempsky
https://golang.org/cl/7062049

R=golang-dev, minux.ma, dave
CC=golang-dev
https://golang.org/cl/7135061

Fixes #4678.

TBR=gri
CC=golang-dev
https://golang.org/cl/7135059

For simplicity, only recognizes expressions of the exact form
"(x << a) | (x >> b)" where x is a variable and a and b are
integer constant expressions that add to x's bit width.

Fixes #4629.

$ cat rotate.c
unsigned int
rotate(unsigned int x)
{
        x = (x << 3) | (x >> (sizeof(x) * 8 - 3));
        return x;
}

## BEFORE
$ go tool 6c -S rotate.c
(rotate.c:2)	TEXT	rotate+0(SB),$0-8
(rotate.c:2)	MOVL	x+0(FP),!!DX
(rotate.c:4)	MOVL	DX,!!AX
(rotate.c:4)	SALL	$3,!!AX
(rotate.c:4)	MOVL	DX,!!CX
(rotate.c:4)	SHRL	$29,!!CX
(rotate.c:4)	ORL	CX,!!AX
(rotate.c:5)	RET	,!!
(rotate.c:5)	RET	,!!
(rotate.c:5)	END	,!!

## AFTER
$ go tool 6c -S rotate.c
(rotate.c:2)	TEXT	rotate+0(SB),$0-8
(rotate.c:4)	MOVL	x+0(FP),!!AX
(rotate.c:4)	ROLL	$3,!!AX
(rotate.c:5)	RET	,!!
(rotate.c:5)	RET	,!!
(rotate.c:5)	END	,!!

R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/7069056

Fixes #3719.

R=anacrolix, rsc
CC=golang-dev
https://golang.org/cl/7131052

Fixes #4653.

R=rsc, r, iant, ken, thakis
CC=golang-dev
https://golang.org/cl/7135058

If the scanned block has no typeinfo the garbage collector will attempt
to get the actual type of the block.

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7093045