Fixes #6305.

R=golang-dev, dave, alex.brainman, r
CC=golang-dev
https://golang.org/cl/13359046

Short test now takes about 0.5 second here.

Fixes #6417.

The failure was also seen on our builders.

R=golang-dev, minux.ma, r
CC=golang-dev
https://golang.org/cl/13321048

Fixes #6124

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/13500046

R=r
CC=golang-dev
https://golang.org/cl/13735044

These were bullet points that I had neglected to flesh out.

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/13816043

The select2.go test assumed that the memory allocated between
its two samplings of runtime.ReadMemStats is strictly
increasing.  To avoid failing the tests when this is not true,
a greater-than check is introduced before computing the
difference in allocated memory.

R=golang-dev, r, cshapiro
CC=golang-dev
https://golang.org/cl/13701046

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/13588044

Fixes #5087.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13812043

Fixes issues 6420.

R=ken2
CC=golang-dev
https://golang.org/cl/13703044

The line number alone does not help when the line is
case '~', '*', '(', ')', '[', ']', '{', '}', '?', ':', ';', ',', '*', '%', '^', '!', '=', '<', '>', '+', '-', '&', '|':

R=ken2
CC=golang-dev
https://golang.org/cl/13431046

If a fault happens in malloc, inevitably the next thing that happens
is a deadlock trying to allocate the panic value that says the fault
happened. Stop doing that, two ways.

First, reject panic in malloc just as we reject panic in garbage collection.

Second, runtime.panicstring was using an error implementation
backed by a Go string, so the interface held an allocated *string.
Since the actual errors are C strings, define a new error
implementation backed by a C char*, which needs no indirection
and therefore no allocation.

This second fix will avoid allocation for errors like nil panic derefs
or division by zero, so it is worth doing even though the first fix
should take care of faults during malloc.

Update #6419

R=golang-dev, dvyukov, dave
CC=golang-dev
https://golang.org/cl/13774043

See also issue 6428.

R=r, rsc
CC=golang-dev
https://golang.org/cl/13794043

Fixes #6245.

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/13751045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13775045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13788043

Looks like the dist tool really doesn't like tags.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13354049

Keeping pointers from the pre-walk phase confuses
the race detection instrumentation.

Fixes #6418.

R=golang-dev, dvyukov, r
CC=golang-dev
https://golang.org/cl/13368057

R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/13777043

This will allow us to cut binaries with names like:
        go1.2rc1.darwin-amd64-osx10.6.pkg
        go1.2rc1.darwin-amd64-osx10.8.pkg

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13629045

Was causing "invalid symbol binding" and thus "malformed pe file" error.

R=golang-dev, alex.brainman, adg
CC=golang-dev
https://golang.org/cl/13722050

Fixes #5986.

R=golang-dev, rsc, alex.brainman
CC=golang-dev
https://golang.org/cl/13261055

Fixes #5740.

R=iant, rsc, luisbebop
CC=gobot, golang-dev
https://golang.org/cl/10345046

Unlike the other output from the -x flag, it was going to stdout.
Fixes #6362.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13746044

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/13632057

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/13451045

R=gri
CC=golang-dev
https://golang.org/cl/13471045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13683046

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/13700044

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13501050

R=rsc, r
CC=golang-dev
https://golang.org/cl/13749044

This is a framework for docs on the subject more than it is
actual docs.

The section header in go/doc.go just says "C", not "C/C++,"
because otherwise godoc doesn't recognize the line as a
section header.

Fixes #5473.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13280050

See also issue 6414.

R=r
CC=golang-dev
https://golang.org/cl/13683044

Avoid future 'declared and not used error'.
See also issue 6414.

R=r
CC=golang-dev
https://golang.org/cl/13242058

Gccgo got this wrong, and evidently nothing else tests it.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13709045

This eliminates ~75% of the nil checks being emitted,
on all architectures. We can do better, but we need
a bit more general support from the compiler, and
I don't want to do that so close to Go 1.2.
What's here is simple but effective and safe.

A few small code generation cleanups were required
to make the analysis consistent on all systems about
which nil checks are omitted, at least in the test.

Fixes #6019.

R=ken2
CC=golang-dev
https://golang.org/cl/13334052

47ec7a68b1a2 added support for ECDSA ciphersuites but didn't alter the
cipher suite selection to take that into account. Thus Go servers could
try and select an ECDSA cipher suite while only having an RSA
certificate, leading to connection failures.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/13239053

In particular document that the Go tool will look for certain
file extensions and compile with them with either the C or the
C++ compiler.

Fixes #6393.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13733043

The root cause of the panic reported in https://code.google.com/p/go/issues/detail?id=5980
is that parse's Tree.Text wasn't being copied during the clone.

Fix this by adding and using a Copy method for parse.Tree.

Fixes #5980.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12420044

Update #5764

Like Tribbles, the more you kill, the more spring up in their place.

R=rsc
CC=golang-dev
https://golang.org/cl/13324049

This interface is required to use the PCDATA interface
implemented in Go 1.2.  While initially entirely private, the
FUNCDATA side of the interface has been made public.  This
change completes the FUNCDATA/PCDATA interface.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/13735043