code review 4264050: gc: unsafe.Pointer is not a pointer

gc: unsafe.Pointer is not a pointer

Change unsafe.Pointer to be its own kind of
type, instead of making it equivalent to *any.
The change complicates import and export
but avoids the need to find all the places that
operate on pointers but should not operate on
unsafe.Pointer.

Fixes issue 1566. (a different way)
Fixes issue 1582.

[rsc, 2011-03-07 20:10:00]

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

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

[rsc, 2011-03-07 20:10:02]

*** Submitted as 5ccb9b6f8cd1 ***

gc: unsafe.Pointer is not a pointer

Change unsafe.Pointer to be its own kind of
type, instead of making it equivalent to *any.
The change complicates import and export
but avoids the need to find all the places that
operate on pointers but should not operate on
unsafe.Pointer.

Fixes issue 1566. (a different way)
Fixes issue 1582.

R=ken2
CC=golang-dev
http://codereview.appspot.com/4264050

[ken3, 2011-03-08 19:44:30]

lgtm