go/parser: a /* */ file comment immediately preceding package decl is lost

[alandonovan]

See http://play.golang.org/p/jFoDNNrB9y

I would expect a file that starts with

    /*a*/package main

to have an ast.File.Doc comment of "a", but it has "".

Adding a newline before 'package' causes the File.Doc comment to become "a\n", as it should.

[griesemer]

The comment is not lost as http://play.golang.org/p/Zl0pDK6KIV (click on Format) proves.

This is working as intended. The doc string comes from comments on the immediately preceding lines of a declaration. I don't see any reason to make this any more complicated. It also has worked for several years now w/o anybody complaining.

[alandonovan]

Fair enough. My mindset was warped by another (real) bug that I was in the middle of debugging when I found this.