unsafe: add missing case to doc for Pointer

Fixes #1433.

R=r, gri
CC=golang-dev
https://golang.org/cl/3999047

diff --git a/src/pkg/unsafe/unsafe.go b/src/pkg/unsafe/unsafe.go
index fc583fe95b37045dbe3d8d498eb2bb838a1a2081..3a4e30c00ceae26f547ff62fb15bcc4631f705a1 100644 (file)
--- a/src/pkg/unsafe/unsafe.go
+++ b/src/pkg/unsafe/unsafe.go
@@ -14,8 +14,9 @@ type ArbitraryType int
 // Pointer represents a pointer to an arbitrary type.  There are three special operations
 // available for type Pointer that are not available for other types.
 //     1) A pointer value of any type can be converted to a Pointer.
-//     2) A uintptr can be converted to a Pointer.
-//     3) A Pointer can be converted to a uintptr.
+//     2) A Pointer can be converted to a pointer value of any type.
+//     3) A uintptr can be converted to a Pointer.
+//     4) A Pointer can be converted to a uintptr.
 // Pointer therefore allows a program to defeat the type system and read and write
 // arbitrary memory. It should be used with extreme care.
 type Pointer *ArbitraryType