During interface compare, the operands will be evaluated twice. The operands might include function calls for conversion, so make them cheap before comparing them.

R=rsc
CC=golang-dev
https://golang.org/cl/6498133

Fixes #4084.

R=r
CC=golang-dev
https://golang.org/cl/6526043

syscall: attempt to find error message in "local" language before resorting to error number on windows

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6499121

R=golang-dev
CC=golang-dev
https://golang.org/cl/6506129

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6503118

Fixes #3456.

This proposal is a reformulation of CL 5987063. This CL resets
the default GOARM value to 6 and allows the use of the VFPv3
optimisation if GOARM=7. Binaries built with this CL in place
will abort if GOARM=7 was used and the target host does not
support VFPv3.

R=minux.ma, rsc, ajstarks
CC=golang-dev
https://golang.org/cl/6501099

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6492135

R=dave, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6501134

R=rsc, dave, minux.ma
CC=golang-dev
https://golang.org/cl/6493123

From 159 to 47.6 ns/op; slightly more accurate.

R=rsc, golang-dev, mtj, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6500121

Fixes #4062.

R=rsc, dave, r
CC=golang-dev, nicksaika
https://golang.org/cl/6488129

In switches without an expression, the compiler would not convert the implicit true to an interface, causing codegen errors.

Fixes #3980.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6497147

Both gc and gccgo permit calls such as unsafe.Sizeof(42). The
spec only permits variable arguments. This is a (backward-compatible)
spec change reflecting the status quo. Seems preferrable over
restricting the compilers.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/6494140

I thought this was redundant since the behavior of 'go get -d' had
changed. I was wrong. Should have tested more thoroughly.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6500136

R=golang-dev, r
CC=adg, golang-dev
https://golang.org/cl/6493124

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6499127

Fixes #4083.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6498136

This also fixes the semantics of some corner cases with the empty
match. TODOs for genericReplacer in the tests are fixed.

benchmark                  old ns/op    new ns/op    delta
BenchmarkGenericNoMatch        71395         3132  -95.61%
BenchmarkGenericMatch1         75610        20280  -73.18%
BenchmarkGenericMatch2        837995        86725  -89.65%

R=nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6492076

R=golang-dev
CC=golang-dev
https://golang.org/cl/6506121

    mainly for NetBSD/OpenBSD.

R=bradfitz, r, rsc
CC=golang-dev
https://golang.org/cl/6453154

Ref: http://svnweb.freebsd.org/base/head/sys/sys/signal.h?revision=HEAD&view=markup

R=golang-dev, devon.odell, r
CC=golang-dev
https://golang.org/cl/6490118

Give the right name for errors, and add a test to check we're
getting the errors we expect.
Also fix an ordering bug (calling add after stopParse) that
caused a nil indirection rather than a helpful error.
Fixes #3280.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6520043

Command.Start could crash before if no fds were available
because a nil *os.File of /dev/null was added to the cleanup
list, which crashed before returning the proper error.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6514043

Strings happen to be represented similarly to
byte slices internally, but they don't quite
behave like them: While strings can be indexed,
sliced, and have their len() taken like byte
slices, string elements are not addressable,
make() and cap() is not supported, range loops
operate differently, and they are immutable (and
thus behave like values rather then references).

Fixes #4018.

R=r, rsc, iant, ken
CC=golang-dev
https://golang.org/cl/6503116

When reading Go files, read through import block.
When reading non-Go files, read only leading comments.

R=nigeltao, adg, r
CC=golang-dev
https://golang.org/cl/6493068

TBR=r

TBR=r
CC=golang-dev
https://golang.org/cl/6496124

Nothing in exp should get installed directly in bin,
at least not by default.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6497138

instead of variables. Several reasons:
- Encourage users of the API to minimize the number of creations and reuse Collate objects.
- Don't rule out the possibility of using initialization code for collators. For some locales
  it will be possible to have very compact representations that can be quickly expanded
  into a proper table on demand.
Other changes:
- Change name of root* vars to main*, as the tables are shared between locales.
- Added Locales() method to get a list of supported locales.

R=r
CC=golang-dev
https://golang.org/cl/6498107

We have some tests (misc/cgo/test) that are disabled only because
they will fail to run on go builder - see issue 3358 for details.
This change will allow us to enable these tests.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6493118

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6493121

Also clean up the code and allow \U.
Fixes #3007.

R=golang-dev, rsc, 0xjnml
CC=golang-dev
https://golang.org/cl/6492105

Should have done this a long time ago.
Fixes #3811.

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/6488120

R=rsc
CC=golang-dev
https://golang.org/cl/6281048

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6492117

Fixes #4012.

R=dave, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6490082

X509KeyPair wasn't really supposed to allow the certificate and
key to be in the same file, but it did work if you put the key
first. Since some HTTPS servers support loading keys and certs
like this, this change makes it work in either order.

Fixes #3986.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6499103

This is the easy part of issue 3528.
(What to do about "noescape" is the hard part, left open.)

Update #3528.

R=mikesamuel, r, dsymonds
CC=golang-dev
https://golang.org/cl/6493113

Right now we only have 32-bit ints so that's a no-op.
Took the opportunity to check for some other invalid values too.
Suggestions for additions or modifications welcome.

R=agl
CC=golang-dev
https://golang.org/cl/6493112

This fixes a problem with ELF tools thinking they know the
format of the symbol table, as we do not use any of the
standard formats for that table.

This change will probably annoy the Plan 9 users, but I
believe there are other incompatibilities already that mean
they have to use a Go-specific nm.

Fixes #3473.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6500117

Fixes #3889.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6499102