Unexported field and method names that appear in the
export data (as part of some exported type) are fully
qualified with a package id (path). In some cases, a
package with that id was never exported for any other
use (i.e. only the path is of interest).

We must not create a "real" package in those cases
because we don't have a package name. Entering an
unnamed package into the map of imported packages
makes that package accessible for other imports.
Such a subsequent import may find the unnamed
package in the map, and reuse it. That reused and
imported package is then entered into the importing
file scope, still w/o a name. References to that
package cannot resolved after that. Was bug.

R=adonovan
CC=golang-dev
https://golang.org/cl/7307112

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7322068

This behavior is identical to GNU tar 1.26.

R=dsymonds, dave
CC=golang-dev
https://golang.org/cl/7307101

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7225080

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7323051

Operands returns the SSA values used by an instruction.
Referrers returns the SSA instructions that use a value, for
some values.  These will be used for SSA renaming, to follow.

R=iant, gri
CC=golang-dev
https://golang.org/cl/7312090

R=adonovan
CC=golang-dev
https://golang.org/cl/7304089

Not everyone has the file (http://golang.org/issue/4723#c4).

Update #4723.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7311091

R=iant
CC=golang-dev
https://golang.org/cl/7307105

Thanks Mitică for reporting this.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7308081

Previously merely printing an error would cause the golden
file comparison (in 'bash run') to fail, but that is no longer
the case with the new run.go driver.

R=iant
CC=golang-dev
https://golang.org/cl/7310087

R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/7229082

R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/7287044

R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/7288050

R=rsc, dave
CC=golang-dev
https://golang.org/cl/7289044

into separate package.  This allows this code to be shared
with the search package without the need for these two to use
the same tables.
Adjusted various files accordingly.

R=rsc
CC=golang-dev
https://golang.org/cl/7213044

Fixes #4744.

R=adonovan
CC=golang-dev
https://golang.org/cl/7305080

The lowering of ast.RangeStmt now has three distinct cases:

1) rangeIter for maps and strings; approximately:
    it = range x
    for {
      k, v, ok = next it
      if !ok { break }
      ...
    }
   The Range instruction and the interpreter's "iter"
   datatype are now restricted to these types.

2) rangeChan for channels; approximately:
    for {
      k, ok = <-x
      if !ok { break }
      ...
    }

3) rangeIndexed for slices, arrays, and *array; approximately:
    for k, l = 0, len(x); k < l; k++ {
      v = x[k]
      ...
    }

In all cases we now evaluate the side effects of the range expression
exactly once, per comments on http://code.google.com/p/go/issues/detail?id=4644.

However the exact spec wording is still being discussed in
https://golang.org/cl/7307083/.  Further (small)
changes may be required once the dust settles.

R=iant
CC=golang-dev
https://golang.org/cl/7303074

Details:
- reorder.go: delete p8.
  (Once expectation is changed per b/4627 it is identical to p1.)
- switch.go: added some more (degenerate) switches.
- range.go: improved error messages in a few cases.
- method.go: added tests of calls to promoted methods.

R=iant
CC=golang-dev
https://golang.org/cl/7306087

Simplify the internal logic for flags controlling what to vet,
by introducing a map of flags that gathers them all together.
This change should simplify the process of adding further flags.

Add a test for untagged struct literals.
Delete a redundant test that was also in the wrong file.
Clean up some ERROR patterns that weren't working.

"make test" passes again.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7305075

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7303065

Fixes #4762.

R=daniel.morsing, adg
CC=golang-dev
https://golang.org/cl/7308045

This is documenting the status quo. The previous cleanup
added this language as an implementation restriction, but
at least for now it is really part of the language proper.

Fixes #4605.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7305071

The gc compilers already behave this way. It was an explicit
decision during the very long constant design discussions,
but it appears not to have made it into the spec.

Fixes #4398.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7313069

Fixes #4586.

R=golang-dev, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/7307082

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7300084

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7306078

sub-repo.

The matching change is at https://golang.org/cl/7310063

The rationale was discussed at
https://groups.google.com/d/topic/golang-nuts/Qq5hTQyPuLg/discussion

R=adg, dave
CC=golang-dev
https://golang.org/cl/7317043

This CL provides the rest of the SetCookies code as well as
some test infrastructure which will be used to test also
the Cookies method. This test infrastructure is optimized
for readability and tries to make it easy to review table
driven test cases.

Tests for all the different corner cases of SetCookies
will be provided in a separate CL.

R=nigeltao, rsc, bradfitz
CC=golang-dev
https://golang.org/cl/7306054

Fixes #4582.

* mentioned hg upload.
* added section on hg file.
* added small mention about being inside $GOROOT.
* added hg revert @NNNN
* reorganise the hg submit section for the common case of a non committer.
* made the Copyright section h2
* added note about leaving copyright years unchanged.

R=golang-dev, metanata4, shivakumar.gn, minux.ma, adg, shanemhansen
CC=golang-dev, metanata4
https://golang.org/cl/7278047

Support reading pax archives and applying extended attributes
like long names, subsecond mtime resolutions, etc. Default to
writing pax archives for long file and link names.
Support reading gnu archives using the ././@LongLink extended
header for file name and link target.

Fixes #3300

R=dsymonds, dave, rogpeppe, remyoudompheng, chressie, rsc
CC=golang-dev
https://golang.org/cl/6700047

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/7304069

Fixes #4010.

This proposal avoids cluttering the main install-source.html with OS specific instructions by linking to the wiki for details. See discussion in the comments.

R=adg, minux.ma
CC=golang-dev
https://golang.org/cl/7241068

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/7308079

Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7303069

The spec is not clear about whether this is allowed or not,
but both compilers allow it, because the reflect implementation
takes advantage of it. Document current behavior.

Fixes #4679.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7303064

Add benchmarks for common http benchmarking tools. The intent is to catch optimisations which favor synthetic benchmarks that do not show improvements for real clients like Chrome.

BenchmarkReadRequestChrome        200000             10133 ns/op          60.29 MB/s        3148 B/op         32 allocs/op
BenchmarkReadRequestCurl          500000              4314 ns/op          18.08 MB/s         905 B/op         15 allocs/op
BenchmarkReadRequestApachebench   500000              4363 ns/op          18.79 MB/s         956 B/op         16 allocs/op
BenchmarkReadRequestSiege         500000              6408 ns/op          24.19 MB/s        1397 B/op         22 allocs/op
BenchmarkReadRequestWrk          1000000              2838 ns/op          14.09 MB/s         757 B/op         11 allocs/op

R=golang-dev, bradfitz
CC=golang-dev, haimuiba
https://golang.org/cl/7300075

Fixes #4573.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7322043

On Windows, CryptoAPI is finding an alternative validation path. Since
this is a little non-deterministic, this change disables that test
when using system validation.

R=golang-dev
CC=golang-dev
https://golang.org/cl/7313068

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7314071