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29676 Commits

Author SHA1 Message Date
Ian Lance Taylor
fe77c5b369 doc: add PKG_CONFIG and GIT_ALLOW_PROTOCOL env vars to go1.8.txt
Change-Id: I592b87f49fc636b89807d911132f69257d718afd
Reviewed-on: https://go-review.googlesource.com/30168
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-10-03 18:26:43 +00:00
Billy Lynch
55620a0e91 cmd/go: add support for GIT_ALLOW_PROTOCOL
Allows users to override the default secure protocol list by setting the
GIT_ALLOW_PROTOCOL environment variable.

Addresses #17299 for vcs.go.

Change-Id: If575861d2b1b04b59029fed7e5d12b49690af50a
Reviewed-on: https://go-review.googlesource.com/30135
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-10-03 18:24:38 +00:00
Boris Nagaev
5dcb31b2d5 cmd/dist, cmd/go: add environment variable override for pkg-config
Allow overriding default name of `pkg-config` tool via environment
variable PKG_CONFIG (same as used by autoconf pkg.m4 macros). This
facilitates easy cross-compilation of cgo code.

Original patch against Go <= 1.4 was written by
xnox_canonical <dimitri.ledkov@canonical.com> in 2014.
Source: https://codereview.appspot.com/104960043/

Fixes #16253

Change-Id: I31c33ffc3ecbff65da31421e6188d092ab4fe7e4
Reviewed-on: https://go-review.googlesource.com/29991
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-10-03 18:08:01 +00:00
Than McIntosh
6c5e377d23 cmd/compile: relax liveness restrictions on ambiguously live
Update gc liveness to remove special conservative treatment
of ambiguously live vars, since there is no longer a need to
protect against GCDEBUG=gcdead.

Change-Id: Id6e2d03218f7d67911e8436d283005a124e6957f
Reviewed-on: https://go-review.googlesource.com/24896
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2016-10-03 18:07:32 +00:00
Brad Fitzpatrick
5f36e9a306 net: clarify that Conn deadlines also affect currently-blocked I/O
All implementations have always implemented this behavior, it's
tested, and it's depended on by other packages. (notably, by net/http)

The one exception is Plan 9 which doesn't support I/O deadlines at all
(tracked in #11932). As a result, a bunch of tests fail on plan9
(#7237). But once Plan 9 adds I/O deadline support, it'll also need
this behavior.

Change-Id: Idb71767f0c99279c66dce29f7bdc78ef467e47aa
Reviewed-on: https://go-review.googlesource.com/30164
Reviewed-by: Sam Whited <sam@samwhited.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-10-03 17:47:08 +00:00
Austin Clements
99339dd445 runtime: weaken claim about SetFinalizer panicking
Currently the SetFinalizer documentation makes a strong claim that
SetFinalizer will panic if the pointer is not to an object allocated
by calling new, to a composite literal, or to a local variable. This
is not true. For example, it doesn't panic when passed the address of
a package-level variable. Nor can we practically make it true. For
example, we can't distinguish between passing a pointer to a composite
literal and passing a pointer to its first field.

Hence, weaken the guarantee to say that it "may" panic.

Updates #17311. (Might fix it, depending on what we want to do with
package-level variables.)

Change-Id: I1c68ea9d0a5bbd3dd1b7ce329d92b0f05e2e0877
Reviewed-on: https://go-review.googlesource.com/30137
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-03 16:12:48 +00:00
Brad Fitzpatrick
22a2bdfedb sort: add Slice, SliceStable, and SliceIsSorted
Add helpers for sorting slices.

Slice sorts slices:

    sort.Slice(s, func(i, j int) bool {
        if s[i].Foo != s[j].Foo {
            return s[i].Foo < s[j].Foo
        }
        return s[i].Bar < s[j].Bar
    })

SliceStable is the same, but does a stable sort.

SliceIsSorted reports whether a slice is already sorted.

Fixes #16721

Change-Id: I346530af1c5dee148ea9be85946fe08f23ae53e7
Reviewed-on: https://go-review.googlesource.com/27321
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2016-10-03 16:09:56 +00:00
Florian Uekermann
003a598bf2 math/rand: add Rand.Uint64
This adds Uint64 methods to Rand and rngSource.
Rand.Uint64 uses Source.Uint64 directly if it is present.

rngSource.Uint64 provides access to all 64 bits generated by the
underlying ALFG. To ensure high seed quality a 64th bit has been added
to all elements of the array of "cooked" random numbers that are used
for seeding. gen_cooked.go generates both the 63 bit and 64 bit array.

Fixes #4254

Change-Id: I22855618ac69abae3d2799b3e7e59996d4c5a4b1
Reviewed-on: https://go-review.googlesource.com/27253
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-03 15:04:39 +00:00
Adam Langley
998419575f crypto/ecdsa: correct code comment.
The code comment mixed up max and min. In this case, min is correct
because this entropy is only used to make the signature scheme
probabilistic. (I.e. if it were fixed then the scheme would still be
secure except that key.Sign(foo) would always give the same result for a
fixed key and foo.)

For this purpose, 256-bits is plenty.

Fixes #16819.

Change-Id: I309bb312b775cf0c4b7463c980ba4b19ad412c36
Reviewed-on: https://go-review.googlesource.com/30153
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-02 19:38:37 +00:00
Adam Langley
49aa1d791b crypto/x509: return better error when a certificate contains no names.
Currently, if a certificate contains no names (that we parsed),
verification will return the confusing error:
    x509: certificate is valid for , not example.com.

This change improves the error for that situation.

Fixes #16834.

Change-Id: I2ed9ed08298d7d50df758e503bdb55277449bf55
Reviewed-on: https://go-review.googlesource.com/30152
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-10-02 19:38:24 +00:00
Adam Langley
e4dafa3262 crypto/x509: fix name constraints handling.
This change brings the behaviour of X.509 name constraints into line
with NSS[1]. In this area, the behavior specified by the RFC and by NIST
differs and this code follows the NIST behaviour.

[1] https://github.com/servo/nss/blob/master/lib/certdb/genname.c

Fixes #16347, fixes #14833.

Change-Id: I5acd1970041291c2e3936f5b1fd36f2a0338e613
Reviewed-on: https://go-review.googlesource.com/30155
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-02 18:48:04 +00:00
Emmanuel Odeke
2d573eee8a cmd/compile: improve error message for wrong number of arguments to return
Fixes #4215.
Fixes #6750.

Improves the error message for wrong number of arguments by comparing
the signature of the return call site arguments, versus the function's
expected return arguments.

In this CL, the signature representation of:
+ ideal numbers(TIDEAL) ie float*, complex*, rune, int is
"number" instead of "untyped number".
+ idealstring is "string" instead of "untyped string".
+ idealbool is "bool" instead of "untyped bool".

However, the representation of other types remains as the compiler
would produce.

* Example 1(in the error messages, if all lines were printed):
$ cat main.go && go run main.go
package main

func foo() (int, int) {
  return 2.3
}

func foo2() {
  return int(2), 2
}

func foo3(v int) (a, b, c, d int) {
  if v >= 5 {
    return 1
  }
  return 2, 3
}

func foo4(name string) (string, int) {
  switch name {
  case "cow":
    return "moo"
  case "dog":
    return "dog", 10, true
  case "fish":
    return ""
  default:
    return "lizard", 10
  }
}

type S int
type T string
type U float64

func foo5() (S, T, U) {
  if false {
    return ""
  } else {
    ptr := new(T)
    return ptr
  }
  return new(S), 12.34, 1 + 0i, 'r', true
}

func foo6() (T, string) {
  return "T"
}

./issue4215.go:4: not enough arguments to return, got (number) want (int, int)
./issue4215.go:8: too many arguments to return, got (int, number) want ()
./issue4215.go:13: not enough arguments to return, got (number) want (int, int, int, int)
./issue4215.go:15: not enough arguments to return, got (number, number) want (int, int, int, int)
./issue4215.go:21: not enough arguments to return, got (string) want (string, int)
./issue4215.go:23: too many arguments to return, got (string, number, bool) want (string, int)
./issue4215.go:25: not enough arguments to return, got (string) want (string, int)
./issue4215.go:37: not enough arguments to return, got (string) want (S, T, U)
./issue4215.go:40: not enough arguments to return, got (*T) want (S, T, U)
./issue4215.go:42: too many arguments to return, got (*S, number, number, number, bool) want (S, T, U)
./issue4215.go:46: not enough arguments to return, got (string) want (T, string)
./issue4215.go:46: too many errors

* Example 2:
$ cat 6750.go && go run 6750.go
package main

import "fmt"

func printmany(nums ...int) {
  for i, n := range nums {
    fmt.Printf("%d: %d\n", i, n)
  }
  fmt.Printf("\n")
}

func main() {
  printmany(1, 2, 3)
  printmany([]int{1, 2, 3}...)
  printmany(1, "abc", []int{2, 3}...)
}
./issue6750.go:15: too many arguments in call to printmany, got (number, string, []int) want (...int)

Change-Id: I6fdce78553ae81770840070e2c975d3e3c83d5d8
Reviewed-on: https://go-review.googlesource.com/25156
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-10-02 16:28:02 +00:00
Adam Langley
2878cf14f3 crypto/tls: simplify keylog tests.
Since there's no aspect of key logging that OpenSSL can check for us,
the tests for it might as well just connect to another goroutine as this
is lower-maintainance.

Change-Id: I746d1dbad1b4bbfc8ef6ccf136ee4824dbda021e
Reviewed-on: https://go-review.googlesource.com/30089
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Joonas Kuorilehto <joneskoo@derbian.fi>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-01 15:50:11 +00:00
Emmanuel Odeke
7b40b0c3a3 strings, bytes: panic if Repeat overflows or if given a negative count
Panic if Repeat is given a negative count or
if the value of (len(*) * count) is detected
to overflow.
We panic because we cannot change the
signature of Repeat to return an error.

Fixes #16237

Change-Id: I9f5ba031a5b8533db0582d7a672ffb715143f3fb
Reviewed-on: https://go-review.googlesource.com/29954
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-01 15:47:35 +00:00
Matt Layher
d166a369a8 bufio: remove redundant Writer.flush method
Fixes #17232

Change-Id: I34df86f79b643dce9f054c6df6782e6037c06910
Reviewed-on: https://go-review.googlesource.com/30158
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-01 15:46:15 +00:00
Mikio Hara
05f599594a syscall: re-enable TestPassFD on dragonfly
At least it works well on DragonFly BSD 4.6.

Change-Id: I3b210745246c6d8d42e32ba65ee3b9a17d171ff7
Reviewed-on: https://go-review.googlesource.com/30170
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-01 15:35:23 +00:00
Brad Fitzpatrick
09fb7956fa net/http: don't sniff Request.Body on 100-continue requests in Transport
Also, update bundled http2 to x/net git rev 0d8126f to include
https://golang.org/cl/30150, the HTTP/2 version of this fix.

Fixes #16002

Change-Id: I8da1ca98250357aec012e3e85c8b13acfa2f3fec
Reviewed-on: https://go-review.googlesource.com/30151
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-10-01 01:47:12 +00:00
Mike Appleby
360f2e43b7 runtime: sleep on CLOCK_MONOTONIC in futexsleep1 on freebsd
In FreeBSD 10.0, the _umtx_op syscall was changed to allow sleeping on
any supported clock, but the default clock was switched from a monotonic
clock to CLOCK_REALTIME.

Prior to 10.0, the __umtx_op_wait* functions ignored the fourth argument
to _umtx_op (uaddr1), expected the fifth argument (uaddr2) to be a
struct timespec pointer, and used a monotonic clock (nanouptime(9)) for
timeout calculations.

Since 10.0, if callers want a clock other than CLOCK_REALTIME, they must
call _umtx_op with uaddr1 set to a value greater than sizeof(struct
timespec), and with uaddr2 as pointer to a struct _umtx_time, rather
than a timespec. Callers can set the _clockid field of the struct
_umtx_time to request the clock they want.

The relevant FreeBSD commit:
    https://svnweb.freebsd.org/base?view=revision&revision=232144

Fixes #17168

Change-Id: I3dd7b32b683622b8d7b4a6a8f9eb56401bed6bdf
Reviewed-on: https://go-review.googlesource.com/30154
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-10-01 01:25:21 +00:00
Mike Appleby
d1f4e0413f time: update comment to reflect correct file path.
Update cross-reference in the comment for runtimeTimer to point to the
new go file instead of the old .h file.

Change-Id: Iddb3614c41e1989096d6caf77d6c0d5781005181
Reviewed-on: https://go-review.googlesource.com/30157
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-10-01 01:09:32 +00:00
Joe Tsai
eca4e44611 cmd/doc: perform type grouping for constants and variables
In golang.org/cl/22354, we added functionality to group functions under the
type that they construct to. In this CL, we extend the same concept to
constants and variables. This makes the doc tool more consistent with what
the godoc website does.

$ go doc reflect | egrep "ChanDir|Kind|SelectDir"
<<<
// Before:
const RecvDir ChanDir = 1 << iota ...
const Invalid Kind = iota ...
type ChanDir int
type Kind uint
type SelectDir int
    func ChanOf(dir ChanDir, t Type) Type

// After:
type ChanDir int
    const RecvDir ChanDir = 1 << iota ...
type Kind uint
    const Invalid Kind = iota ...
type SelectDir int
    const SelectSend SelectDir ...
    func ChanOf(dir ChanDir, t Type) Type
>>>

Furthermore, a fix was made to ensure that the type was printed in constant
blocks when the iota was applied on an unexported field.

$ go doc reflect SelectSend
<<<
// Before:
const (
	SelectSend    // case Chan <- Send
	SelectRecv    // case <-Chan:
	SelectDefault // default
)

// After:
const (
	SelectSend    SelectDir // case Chan <- Send
	SelectRecv              // case <-Chan:
	SelectDefault           // default
)
>>>

Fixes #16569

Change-Id: I26124c3d19e50caf9742bb936803a665e0fa6512
Reviewed-on: https://go-review.googlesource.com/25419
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-30 23:40:48 +00:00
Matt Layher
c5f064ee49 context: discourage use of basic types as keys in WithValue
Fixes #17302

Change-Id: I375d5d4f2714ff415542f4fe56a548e53c5e8ba6
Reviewed-on: https://go-review.googlesource.com/30134
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-30 21:30:29 +00:00
Brad Fitzpatrick
ca04091f5b reflect: add Swapper func
Swapper returns a func that swaps two elements in a slice.

Updates #16721

Change-Id: I7f2287a675c10a05019e02b7d62fb870af31216f
Reviewed-on: https://go-review.googlesource.com/30088
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2016-09-30 20:26:54 +00:00
Brad Fitzpatrick
9491e7d65e net/http: refactor testing of Request.Body on 0 ContentLength
Code movement only, to look more like the equivalent http2 code, and
to make an upcoming fix look more obvious.

Updates #16002 (to be fixed once this code is in)

Change-Id: Iaa4f965be14e98f9996e7c4624afe6e19bed1a80
Reviewed-on: https://go-review.googlesource.com/30087
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2016-09-30 19:45:34 +00:00
David Benjamin
ab6ba99484 crypto/tls: Fix c.in.decrypt error handling.
readRecord was not returning early if c.in.decrypt failed and ran
through the rest of the function. It does set c.in.err, so the various
checks in the callers do ultimately notice before acting on the result,
but we should avoid running the rest of the function at all.

Also rename 'err' to 'alertValue' since it isn't actually an error.

Change-Id: I6660924716a85af704bd3fe81521b34766238695
Reviewed-on: https://go-review.googlesource.com/24709
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
2016-09-30 18:44:37 +00:00
Alberto Donizetti
01661612e4 cmd/compile: update error messages in Mpint, Mpflt methods
CL 20909 gave Mpint methods nice go-like names, but it
didn't update the names in the error strings. Fix them.

Same for a couple of Mpflt methods.

Change-Id: I9c99653d4b922e32fd5ba18aba768a589a4c7869
Reviewed-on: https://go-review.googlesource.com/30091
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-30 17:32:39 +00:00
Michael Munday
962dc4b44d cmd/compile: improve load/store merging on s390x
This commit makes the process of load/store merging more incremental
for both big and little endian operations. It also adds support for
32-bit shifts (needed to merge 16- and 32-bit loads/stores).

In addition, the merging of little endian stores is now supported.
Little endian stores are now up to 30 times faster.

Change-Id: Iefdd81eda4a65b335f23c3ff222146540083ad9c
Reviewed-on: https://go-review.googlesource.com/29956
Run-TryBot: Michael Munday <munday@ca.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-09-30 14:41:43 +00:00
Alberto Donizetti
41fa42b447 cmd/compile: delete unused Convconst function
Convconst is not used in the new backend, and all its callers
were deleted in CL 29168 (cmd/compile: delete lots of the legacy
backend). iconv was an helper function for Convconst.

Updates #16357

Change-Id: I65c7345586d7af81cdc2fb09c68f744ffb161a17
Reviewed-on: https://go-review.googlesource.com/30090
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-30 14:21:55 +00:00
Brad Fitzpatrick
893d686621 net/http: update bundled http2, add h2 Transport.IdleConnTimeout tests
Updates bundled http2 to x/net git rev a333c53 for:

   http2: add Transport support for IdleConnTimeout
   https://golang.org/cl/30075

And add tests.

The bundled http2 also includes a change adding a Ping method to
http2.ClientConn, but that type isn't exposed in the standard
library. Nevertheless, the code gets compiled and adds a dependency on
"crypto/rand", requiring an update to go/build's dependency
test. Because net/http already depends on crypto/tls, which uses
crypto/rand, it's not really a new dependency.

Fixes #16808

Change-Id: I1ec8666ea74762f27c70a6f30a366a6647f923f7
Reviewed-on: https://go-review.googlesource.com/30078
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-30 14:06:32 +00:00
David Crawshaw
441502154f runtime: remove defer from standard cgo call
The endcgo function call is currently deferred in case a cgo
callback into Go panics and unwinds through cgocall. Typical cgo
calls do not have callbacks into Go, and even fewer panic, so we
pay the cost of this defer for no typical benefit.

Amazingly, there is another defer on the cgocallback path also used
to cleanup in case the Go code called by cgo panics. This CL folds
the first defer into the second, to reduce the cost of typical cgo
calls.

This reduces the overhead for a no-op cgo call significantly:

	name       old time/op  new time/op  delta
	CgoNoop-8  93.5ns ± 0%  51.1ns ± 1%  -45.34%  (p=0.016 n=4+5)

The total effect between Go 1.7 and 1.8 is even greater, as CL 29656
reduced the cost of defer recently. Hopefully a future Go release
will drop the cost of defer to nothing, making this optimization
unnecessary. But until then, this is nice.

Change-Id: Id1a5648f687a87001d95bec6842e4054bd20ee4f
Reviewed-on: https://go-review.googlesource.com/30080
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-30 13:31:07 +00:00
Matthew Dempsky
9828b7c468 runtime, syscall: use FP instead of SP for parameters
Consistently access function parameters using the FP pseudo-register
instead of SP (e.g., x+0(FP) instead of x+4(SP) or x+8(SP), depending
on register size). Two reasons: 1) doc/asm says the SP pseudo-register
should use negative offsets in the range [-framesize, 0), and 2)
cmd/vet only validates parameter offsets when indexed from the FP
pseudo-register.

No binary changes to the compiled object files for any of the affected
package/OS/arch combinations.

Change-Id: I0efc6079bc7519fcea588c114ec6a39b245d68b0
Reviewed-on: https://go-review.googlesource.com/30085
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-30 05:40:43 +00:00
Matthew Dempsky
79db1625b9 cmd/compile: eliminate stkdelta
At this point in the compiler we haven't assigned Xoffset values for
PAUTO variables anyway, so just immediately store the stack offsets
into Xoffset rather than into a global map.

Change-Id: I61eb471c857c8b145fd0895cbd98fd4e8d3c3365
Reviewed-on: https://go-review.googlesource.com/30081
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-09-30 05:15:19 +00:00
Matthew Dempsky
bb2bbfa086 cmd/compile: split Addrconst out of Naddr
There are only three Prog types that we were creating with an OLITERAL
Node: ATEXT, ATYPE, and AFUNCDATA. ATEXT's value we later overwrite in
defframe, and ATYPE's we don't even need. AFUNCDATA only needs integer
constants, so get rid of all the non-int constant logic and skip
creating a Node representation for the constant.

While here, there are a few other Naddr code paths that are no longer
needed, so turn those into Fatalfs.

Passes toolstash/buildall.

Change-Id: I4cc9b92c3011890afd4f31ebeba8b1b42b753cab
Reviewed-on: https://go-review.googlesource.com/30074
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-30 04:24:22 +00:00
Brad Fitzpatrick
214bf68097 net/http: remove TODO about the Server's base context
I decided not to expand the API for this per discusion on #16220.

Fixes #16220

Change-Id: I65cb2eacd4ec28c79438a8f7c30024524a484ce6
Reviewed-on: https://go-review.googlesource.com/30082
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-30 03:57:24 +00:00
Matthew Dempsky
dd748cf314 cmd/compile: make Afunclit the default/only behavior for Naddr
Naddr used to translate PFUNC Nodes into references to the function
literal wrapper, and then Afunclit could be used to rewrite it to
reference the function text itself. But now everywhere we use Naddr on
PFUNC Nodes, we immediately call Afunclit anyway. So just merge
Afunclit's behavior into Naddr.

Passes toolstash/buildall.

Change-Id: If2ca6d7f314c1a0711df9b8209aace16ba4b8bc0
Reviewed-on: https://go-review.googlesource.com/30073
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 23:13:18 +00:00
Daniel Theophanes
d2df8498f3 database/sql: close Rows when context is cancelled
To prevent leaking connections, close any open Rows when the
context is cancelled. Also enforce context cancel while reading
rows off of the wire.

Change-Id: I62237ecdb7d250d6734f6ce3d2b0bcb16dc6fda7
Reviewed-on: https://go-review.googlesource.com/29957
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-29 22:26:42 +00:00
Matthew Dempsky
6dc356a76a cmd/compile/internal/ssa: erase register copies deterministically
Fixes #17288.

Change-Id: I2ddd01d14667d5c6a2e19bd70489da8d9869d308
Reviewed-on: https://go-review.googlesource.com/30072
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 22:22:36 +00:00
Brad Fitzpatrick
c1e06dcb61 net/http: use atomic.Value for Transport's alternate protocol map
Fix an old TODO and use atomic.Value for holding the Transport's
alternate protocol map. It is very frequently accessed and almost
never set or updated.

Change-Id: Ic5a71c504bdac76678114c6390d1fc0673e07aa9
Reviewed-on: https://go-review.googlesource.com/29967
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-29 20:43:04 +00:00
Brad Fitzpatrick
8e69d43b32 net: add Buffers type, do writev on unix
No fast path currently for solaris, windows, nacl, plan9.

Fixes #13451

Change-Id: I24b3233a2e3a57fc6445e276a5c0d7b097884007
Reviewed-on: https://go-review.googlesource.com/29951
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 20:33:45 +00:00
Nodir Turakulov
ffd1c781b7 html/template: check "type" attribute in <script>
Currently any script tag is treated as a javascript container, although
<script type="text/template"> must not be. Check "type" attribute of
"script" tag. If it is present and it is not a JS MIME type, do not
transition to elementScript state.

Fixes #12149, where // inside text template was treated as regexp.
Fixes #6701

Change-Id: I8fc9e504f7280bdd800f40383c061853665ac8a2
Reviewed-on: https://go-review.googlesource.com/14336
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2016-09-29 20:12:31 +00:00
Matthew Dempsky
f5516559e6 cmd/compile/internal/x86: fix zero-range merging logic
All other architectures merge stack-zeroing ranges if there are at
most two pointers/registers of memory between them, but x86 is
erroneously coded to require *exactly* two.

Shaves a tiny amount of text size off cmd/go when building for
GOARCH=386 and eliminates an unnecessary inconsistency between x86's
defframe and the other GOARCHes'.

   text	   data	    bss	    dec	    hex	filename
5241015	 191051	  93336	5525402	 544f9a	go.before
5240224	 191051	  93336	5524611	 544c83	go.after

Change-Id: Ib15ec8c07bca11e824640f0ab32abfc4bb160496
Reviewed-on: https://go-review.googlesource.com/30050
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 18:54:16 +00:00
Alberto Donizetti
2b49d129c4 cmd/compile: delete unused (*Node) SetInt, SetBigInt, Bool
Introduced in CL 9263 (prepare to unexport gc.Mp*) and CL 9267
(prepare Node.Val to be unexported), their only callers were in
the old backend and all got deleted in CL 29168 (cmd/compile:
delete lots of the legacy backend).

Update #16357

Change-Id: I0a5d76b98b418e8ec0984c033c3bc0ac3fc5f38a
Reviewed-on: https://go-review.googlesource.com/29997
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-29 18:52:14 +00:00
Joe Tsai
6fea452e38 archive/tar: move parse/format functionality into strconv.go
Move all parse/format related functionality into strconv.go
and thoroughly test them. This also reduces the amount of noise
inside reader.go and writer.go.

There was zero functionality change other than moving code around.

Change-Id: I3bc288d10c20ebb3814b30b75d8acd7be62b85d7
Reviewed-on: https://go-review.googlesource.com/28470
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-29 18:38:28 +00:00
Joe Tsai
a09e1de0ea net/http: document how Request.Cookie deals with duplicate cookies
RFC 6265, section 4.2.2 says:
<<<
Although cookies are serialized linearly in the Cookie header,
servers SHOULD NOT rely upon the serialization order.  In particular,
if the Cookie header contains two cookies with the same name (e.g.,
that were set with different Path or Domain attributes), servers
SHOULD NOT rely upon the order in which these cookies appear in the
header.
>>>

This statement seems to indicate that cookies should conceptually
be thought of as a map of keys to sets of values (map[key][]value).
However, in practice, everyone pretty much treats cookies as a
map[key]value and the API for Request.Cookie seems to indicate that.

We should update the documentation for Request.Cookie to warn the
user what happens when there is are multiple cookies with the same
key. I deliberately did not want to say *which* cookie is returned.

Change-Id: Id3e0e24b2b14ca2d9ea8b13f82ba739edaa71cf0
Reviewed-on: https://go-review.googlesource.com/29364
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-29 18:26:32 +00:00
Matthew Dempsky
518cc7f307 cmd/internal/obj/arm: cleanup some unnecessary temps and conversions
Change-Id: I573278c9aee80e62463b2542774dabeec7c3b098
Reviewed-on: https://go-review.googlesource.com/29969
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-09-29 18:14:05 +00:00
Brad Fitzpatrick
985d3d307c net: make proto and port lookups fall back to baked-in maps on Windows
In https://golang.org/cl/28951 I cleaned up the lookupProtocol and
lookupPort paths to be consistently case-insensitive across operating
systems and to share the same baked-in maps of port & proto values
that can be relied on to exist on any platform.

I missed the fallback to the baked-in maps on Windows, though, which
broke Windows XP. This should fix it.

Fixes #17175

Change-Id: Iecd434fb684304137ee27f5521cfaa8c351a1bde
Reviewed-on: https://go-review.googlesource.com/29968
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-29 18:09:54 +00:00
Alberto Donizetti
d58219e50b cmd/compile: delete unused IntLiteral function
IntLiteral was only called by the gins functions in
cmd/compile/internal/{arm64,mips64,ppc64}/gsubr.go
but CL 29220 (cmd/compile: remove gins) deleted them,
so IntLiteral is now unused.

Change-Id: I2652b6d2ace6fdadc1982f65e749f3982513371e
Reviewed-on: https://go-review.googlesource.com/29996
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 17:25:28 +00:00
Alberto Donizetti
c5434f2973 time: update test for tzdata-2016g
Fixes #17276

Change-Id: I0188cf9bc5fdb48c71ad929cc54206d03e0b96e4
Reviewed-on: https://go-review.googlesource.com/29995
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-29 16:26:28 +00:00
Ilya Tocar
731b3ed18d math: make sqrt smaller on AMD64
This makes function fit in 16 bytes, saving 16 bytes.

Change-Id: Iac5d2add42f6dae985b2a5cbe19ad4bd4bcc92ec
Reviewed-on: https://go-review.googlesource.com/29151
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-09-29 15:56:52 +00:00
Cherry Zhang
fedb0b3018 cmd/internal/obj/arm: optimize MOVW $-off(R), R
When offset < 0 and -offset fits in instruction, generate SUB
instruction, instead of ADD with constant from the pool.

Fixes #13280.

Change-Id: I57d97fe9300fe1f6554365e2262393ef50acbdd3
Reviewed-on: https://go-review.googlesource.com/30014
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2016-09-29 15:20:46 +00:00
Ilya Tocar
26531b3846 cmd/internal/obj/x86: cleanup
Remove duplicate vars, commented out code  and duplicate lines.
When choosing between 2 aliases, on with more uses was chosen.

Change-Id: I7bc15f1693de3f6d378cef9c09469970a659db40
Reviewed-on: https://go-review.googlesource.com/29152
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-09-29 11:45:43 +00:00