tree 458570d40da6df229255c094bbac44c5bedc281e
parent dc06d3e643411517e465276d75b66dbed2898850
author haya14busa <haya14busa@gmail.com> 1490335117 +0900
committer Brad Fitzpatrick <bradfitz@golang.org> 1523576851 +0000

imports: Process should accept nil src

The comment of Process() implies src can be nil, but it didn't handle
nil src correctly before because parse() doesn't expect nil src.
Passing []byte(nil) to parser.ParseFile() results in error and parse()
tries to parse again by modifying src if src is statement list.

This problem isn't related with cmd/goimports because goimports doesn't
pass []byte(nil) to Process() as src.

Fixes golang/go#19676

Change-Id: Idbaa6646c3907690763eabc798860c56bb9963d4
Reviewed-on: https://go-review.googlesource.com/38613
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>