And make it have more useful output on failure.

Update #5005

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8016046

Since fp->symsz includes the size of the header
in the new symbol table format, we were reading
past the end and decoding a few garbage symbols
from data in the pc/line table.

R=rsc, r
CC=golang-dev
https://golang.org/cl/7993043

Seems to have been omitted before.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7749049

- convert all formatters that require a *token.FileSet to
  consistenly use a *PageInfo as first argument instead
- adjust templates correspondingly
- fix outstanding bug from previous CL 8005044

Going forward, with this change the affected functions have
access to the full page "context" (PageInfo), not just the
respective file set. This will permit better context-dependent
formatting in the future.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7860049

The gofmt function was returning a string, which isn't the right type.
Three cheers for dynamic typing.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7917044

A HMUL node appears in some constant divisions, but
to observe a false negative in race detector the divisor must be
suitably chosen to make sure the only memory access is
done for HMUL.

R=dvyukov
CC=golang-dev
https://golang.org/cl/7935045

Always use /home/you for $HOME in examples.

Trivial enough that someone else can integrate this change if they are editing go1.1.html

R=r
CC=golang-dev
https://golang.org/cl/8025043

For Go 1.1, stop checking the rlimit, because it broke now
that mheap is allocated using SysAlloc.  See issue 5049.

R=r
CC=golang-dev
https://golang.org/cl/7741050

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8005044

ArrayOf will remain unexported (and therefore unused) for Go 1.1.

Fixes #4375.

R=0xe2.0x9a.0x9b, r, iant
CC=golang-dev
https://golang.org/cl/7716048

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7835049

The arm gentraceback mishandled frame linkage values pointing
to the assembly return function.  This function is special as
its frame size is zero and it contains only one instruction.
These conditions would preserve the frame pointer and result
in an off by one error when unwinding the caller.

Fixes #5124

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/8023043

The changes are almost completely self-contained
in the new file linkify.go. The other changes are
minimal and should not disturb the currently
working godoc, in anticipation of Go 1.1.

To disable the feature in case of problems, set
-links=false.

Fixes #2063.

R=adg, r
CC=golang-dev
https://golang.org/cl/7883044

Aids godoc.

R=golang-dev, gri, bradfitz
CC=golang-dev
https://golang.org/cl/7992044

Mild adaptation of rsc's 8021043, which I was unable to clpatch.
(rsc is offline)

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7741049

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7725049

Prevents storm of error messages if something goes wrong.
In the case of issue 5073 the epoll fd was closed by the test.
Update #5073.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/7966043

This CL avoids test data sharing in repetitive test runs;
e.g., go test net -cpu=1,1,1

R=golang-dev, fullung, bradfitz
CC=golang-dev
https://golang.org/cl/8011043

Handle interface comparison correctly,
add a few more tests, mark more nodes as impossible.

R=dvyukov, golang-dev
CC=golang-dev
https://golang.org/cl/7942045

Fixes #5119.

R=golang-dev, dvyukov, dave, rsc
CC=golang-dev
https://golang.org/cl/7838050

R=dsymonds
CC=golang-dev
https://golang.org/cl/7757043

Fixes issue with go test -cpu=1,1

R=minux.ma, bradfitz, nigeltao
CC=golang-dev
https://golang.org/cl/7808045

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7475048

Make the copy directly in the convert switch instead of an extra loop.
Also stops converting nil-[]byte to zero-[]byte when assigning to *interface

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7962044

R=golang-dev, adg, bradfitz
CC=golang-dev
https://golang.org/cl/7696045

Fixes #5127

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/8011044

Fixes #5046

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8016044

At some point in the past, I believe the GCD algorithm was setting d to
be negative. The RSA code has been correcting that ever since but, now,
it appears to have changed and the correction isn't needed.

Having d be too large is harmless, it's just a little odd and I
happened to notice.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7948044

Fixes SWIG callbacks.  Previously crosscall2 was only
cgo_export_static, despite the use of two #pragma declarations
in runtime/cgo/callbacks.c.

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7817048

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7812050

This keeps the logic about how to set the thread-local variables
m and g in code compiled and linked by the gc toolchain,
an important property for upcoming cgo changes.

It's also just a nice cleanup: one less place to update when
these details change.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7560048

This functionality moved into cmd/dist for Go 1.0.
Changes to this script have no effect.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8020043

The right operand of a && and || is only executed conditionnally,
so the instrumentation must be more careful. In particular
it should not turn nodes assumed to be cheap after walk into
expensive ones.

Update #4228

R=dvyukov, golang-dev
CC=golang-dev
https://golang.org/cl/7986043

The ARM implementation of runtime.cgocallback_gofunc diverged
from the calling convention by leaving a word of garbage at
the top of the stack and storing the return PC above the
locals.  This change stores the return PC at the top of the
stack and removes the save area above the locals.

Update #5124
This CL fixes first part of the ARM issues and added the unwind test.

R=golang-dev, bradfitz, minux.ma, cshapiro, rsc
CC=golang-dev
https://golang.org/cl/7728045

Fixes #5105.

R=golang-dev, dave, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/7965043

The edit makes Hypot's description match the form
used in the other routines in this package.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/8003046

Adds the new debugging constant 'checkgc'. If its value is non-zero
all calls to mallocgc() from hashmap.c will start a garbage collection.

Fixes #5074.

R=golang-dev, khr
CC=golang-dev, rsc
https://golang.org/cl/7663051

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7725048

Fixes performance of the current windows network poller
with the new scheduler.
Gives runtime a hint when GetQueuedCompletionStatus() will block.
Fixes #5068.

benchmark                    old ns/op    new ns/op    delta
BenchmarkTCP4Persistent        4004000        33906  -99.15%
BenchmarkTCP4Persistent-2        21790        17513  -19.63%
BenchmarkTCP4Persistent-4        44760        34270  -23.44%
BenchmarkTCP4Persistent-6        45280        43000   -5.04%

R=golang-dev, alex.brainman, coocood, rsc
CC=golang-dev
https://golang.org/cl/7612045

R=golang-dev, bradfitz
CC=adonovan, cw, golang-dev, patrick.allen.higgins
https://golang.org/cl/7956044