code review 3926044: go spec: adjust notion of Assignability

go spec: adjust notion of Assignability

This change makes it legal to pass a struct value as receiver
outside the package declaring the struct even if the respective
struct type has non-exported fields.

This is a backwards-compatible language change motivated by the
fact that it is already possible to circumvent the assignment
restriction when calling methods through interfaces (see issue
1402).

[gri, 2011-02-02 23:48:08]

Hello r, rsc, iant, ken2 (cc: golang-dev@googlegroups.com),

I'd like you to review this change to
https://go.googlecode.com/hg/

[rsc, 2011-02-03 18:40:31]

LGTM

[gri, 2011-02-03 18:53:33]

*** Submitted as http://code.google.com/p/go/source/detail?r=df410d6a4842 ***

go spec: adjust notion of Assignability

This change makes it legal to pass a struct value as receiver
outside the package declaring the struct even if the respective
struct type has non-exported fields.

This is a backwards-compatible language change motivated by the
fact that it is already possible to circumvent the assignment
restriction when calling methods through interfaces (see issue
1402).

R=r, rsc, iant, ken2
CC=golang-dev
http://codereview.appspot.com/3926044