R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5707065

Originally published on The Go Programming Language Blog, September 6, 2011.

http://blog.golang.org/2011/09/laws-of-reflection.html

Update #2547

R=golang-dev, r, adg
CC=golang-dev
https://golang.org/cl/5689054

go test -short # like in the build; no external stuff
go test # long tests, + external
go test -external=false # long tests, no external

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5696079

The two string comparison optimizations were
missing the implicit cast from ideal bool.

Fixes #3119.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5696071

The strikes against it are:

1. It does not take path boundaries into account.
2. It assumes that Windows==case-insensitive file system
and non-Windows==case-sensitive file system, neither of
which is always true.
3. Comparing ToLower against ToLower is not a correct
implementation of a case-insensitive string comparison.
4. If it returns true on Windows you still don't know how long
the matching prefix is in bytes, so you can't compute what
the suffix is.

R=golang-dev, r, dsymonds, r
CC=golang-dev
https://golang.org/cl/5712045

In -test.short mode, skip measuring the upper bound of time
sleeps. The API only guarantees minimum bounds on sleeps,
anyway, so this isn't a bug we're ignoring as much as it is
simply observing bad builder virtualization and/or loaded
machines.

We keep the test in full mode where developers will
presumably be running on a lightly-loaded, native, fast
machine.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5713044

When we first wrote the method set definition, we had long
discussions about whether method sets applied to all types
or just named types, and we (or at least I) concluded that it
didn't matter: the two were equivalent points of view, because
the only way to introduce a new method was to write a method
function, which requires a named receiver type.

However, the addition of embedded types changed this.
Embedding can introduce a method without writing an explicit
method function, as in:

        var x struct {
                sync.Mutex
        }

        var px *struct {
                sync.Mutex
        }

        var _, _ sync.Locker = &x, px

The edits in this CL make clear that both &x and px satisfy
sync.Locker.  Today, gccgo already works this way; 6g does not.

R=golang-dev, gri, iant, r
CC=golang-dev
https://golang.org/cl/5702062

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5711044

R=golang-dev, r, bradfitz, gustavo
CC=golang-dev
https://golang.org/cl/5712044

They are broken and hard to make work.

They have never worked: if you import "/tmp/x"
from "/home/rsc/p.c" then the compiler rewrites
this into import "/home/rsc/tmp/x", which is
clearly wrong.

Also we just disallowed the : character in import
paths, so import "c:/foo" is already not allowed.

Finally, in order to support absolute paths well in
a build tool we'd have to provide a mechanism to
instruct the compiler to resolve absolute imports
by looking in some other tree (where the binaries live)
and provide a mapping from absolute path to location
in that tree.  This CL avoids adding that complexity.

This is not part of the language spec (and should not be),
so no spec change is needed.

If we need to make them work later, we can.

R=ken2
CC=golang-dev
https://golang.org/cl/5712043

In the current TOC it sticks out quite a bit.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5705053

Might fix issue 3050

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5708066

R=rsc, bsiegert
CC=golang-dev
https://golang.org/cl/5709060

Fix for minor inconsistency.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/5709058

R=golang-dev, r, ality, r
CC=golang-dev
https://golang.org/cl/5709053

Part of diagnosing issue 3050.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5707056

Fixes #2919 I believe. (gets as far as sending a CONNECT
request to my little dummy logging proxy that doesn't actually
support CONNECT now.)  Untested with a real CONNECT-supporting
proxy, though.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5708055

It's still racy in that it mutates req.Body, though.  *shrug*

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5709054

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5706065

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5707062

This CL mostly deletes code.

Using existing position information is
just as good to determine if a new section
is needed; no need to track exact multi-
line information. Eliminates the need to
carry around a multiLine parameter with
practically every function.

Applied gofmt -w src misc resulting in only
a minor change to godoc.go. In return, a couple
of test cases are now formatted better.

Not Go1-required, but nice-to-have as it will
simplify fixes going forward.

R=rsc
CC=golang-dev
https://golang.org/cl/5706055

Don't try to print obviously corrupt slices or interfaces.
Doesn't actually solve 3047 or 2818, but seems a good idea anyway.

R=rsc, bsiegert
CC=golang-dev
https://golang.org/cl/5708061

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5707058

Updates #1599.

R=golang-dev, adg, dsymonds
CC=golang-dev
https://golang.org/cl/5704052

Now available at the Go Wiki:
http://code.google.com/p/go-wiki/wiki/GoForCPPProgrammers

Fixes #2913.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5705049

Fixes #1612.

R=r, rsc, iant, ken, remyoudompheng, ken, r
CC=golang-dev
https://golang.org/cl/5700068

Minor cleanups to look more like current Go.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5707053

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5706054

Don't try to do an SSL negotiation with a *bytes.Buffer.

Fixes #3135

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/5709050

We should use DialUnix or ListenPacket for unixgram networks
because Dial doesn't take a local UnixAddr.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5706043

Change #foo to div#foo to avoid selecting headings
with anchor foo, such as <h1 id="foo">.

(A more extensive change would be to use class
selectors for styling. Perhaps this is better, since id:s
should be unique within a document according to
http://www.w3.org/TR/CSS2/selector.html#id-selectors)

R=golang-dev, gri, adg
CC=golang-dev
https://golang.org/cl/5702044

Only copy+paste here.
Will make next code review's diffs a bit smaller.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5704050

Work around profiling kernel bug with signal masks.
Still broken on 64-bit Snow Leopard kernel,
but I think we can ignore that one and let people
upgrade to Lion.

Add new trivial tools addr2line and objdump to take
the place of the GNU tools of the same name, since
those are not installed on OS X.

Adapt pprof to invoke 'go tool addr2line' and
'go tool objdump' if the system tools do not exist.

Clean up disassembly of base register on amd64.

Fixes #2008.

R=golang-dev, bradfitz, mikioh.mikioh, r, iant
CC=golang-dev
https://golang.org/cl/5697066

R=golang-dev, minux.ma, rsc
CC=golang-dev, remy
https://golang.org/cl/5702050

except for hiding one type that is only used internally.

Fixes #2944.

R=golang-dev, rsc, kevlar
CC=golang-dev
https://golang.org/cl/5707044

        If stdout and stderr are indeed the same file (not a tty), which is
        often the case, fully-buffered stdout will make it harder to see
        progresses, for example, ./make.bash 2>&1 | tee log

R=r, rsc
CC=golang-dev
https://golang.org/cl/5700070

This is a band-aid until we can use weak imports with cgo.

Fixes #3131.

R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/5700083

R=golang-dev, rsc, adg, r, r
CC=golang-dev
https://golang.org/cl/5693060

When debugging ASTs, it's useful to also
see the comments on occasion. Usage:

gotype -ast -comments file.go

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5703043

R=golang-dev
CC=golang-dev
https://golang.org/cl/5702043