test: add test for confusion with dot imports

The gccgo compiler would fail this test.  The fix for gccgo is
http://codereview.appspot.com/116960043 .

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://codereview.appspot.com/118000043

3 files changed, 28 insertions, 0 deletions

diff --git a/test/fixedbugs/bug488.dir/a.go b/test/fixedbugs/bug488.dir/a.go
new file mode 100644
index 000000000..94eaf7f1e
--- /dev/null
+++ b/test/fixedbugs/bug488.dir/a.go
@@ -0,0 +1,7 @@
+// Copyright 2014 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package a
+
+var p2 = Printf		// ERROR "undefined"
diff --git a/test/fixedbugs/bug488.dir/b.go b/test/fixedbugs/bug488.dir/b.go
new file mode 100644
index 000000000..21b4c5b54
--- /dev/null
+++ b/test/fixedbugs/bug488.dir/b.go
@@ -0,0 +1,9 @@
+// Copyright 2014 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package a
+
+import . "fmt"
+
+var p1 = Print
diff --git a/test/fixedbugs/bug488.go b/test/fixedbugs/bug488.go
new file mode 100644
index 000000000..63a601ed9
--- /dev/null
+++ b/test/fixedbugs/bug488.go
@@ -0,0 +1,12 @@
+// errorcheckdir
+
+// Copyright 2014 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The gccgo compiler had a bug: if one file in a package did a dot
+// import, then an earlier file in the package would incorrectly
+// resolve to the imported names rather than reporting undefined
+// errors.
+
+package ignored