changeset:   6839:545c9926d61a
	user:        Robert Griesemer <gri@golang.org>
	date:        Mon Dec 06 14:23:18 2010 -0800
	summary:     go/ast: use token.Pos instead of token.Position; adjust all dependent code
broke 'godoc -src fmt', one of the example uses of godoc. It gives a stack backtrace essentially
caused by dereferencing a NULL pointer (in C terms). This change fixes the particular issue, but
the code probably should be made more robust.
Fixes #3818044.

R=gri
CC=golang-dev
https://golang.org/cl/3818044