gccgo miscompiles (but 6g does not) this code

[gopherbot]

by mdevan.foobar:

What steps will reproduce the problem?
1. Compile and run this code using both gccgo and 6g.
----------

// file "c.go"

package main

import "go/parser";

func main() {

    parser.ParseFile("c.go", nil, parser.Trace);

}

----------

What is the expected output? What do you see instead?
./6.out produces correct output, but ./a.out never stops executing (emits
endless stream of ". "):

    4:  1: File (
    4:  1: . . . . <keeps going>

What is your $GOOS?  $GOARCH?
linux amd64

Which revision are you using?  (hg identify)
2f32e74ab96e (go)
r154488      (gccgo)

Please provide any additional information below.

[ianlancetaylor]

Comment 1:

Labels changed: added gccgo.

Owner changed to [email protected].

Status changed to Accepted.

[ianlancetaylor]

Comment 2:

I have committed a patch to fix this problem.  Sorry for the long delay.

Status changed to Fixed.