1 files changed, 46 insertions, 0 deletions
diff --git a/test/fixedbugs/issue22662.go b/test/fixedbugs/issue22662.go
new file mode 100644
index 0000000..a1f00bf
--- /dev/null
+++ b/test/fixedbugs/issue22662.go
@@ -0,0 +1,46 @@
+// run
+
+// Copyright 2018 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.
+
+// Verify effect of various line directives.
+// TODO: check columns
+
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func check(file string, line int) {
+	_, f, l, ok := runtime.Caller(1)
+	if !ok {
+		panic("runtime.Caller(1) failed")
+	}
+	if f != file || l != line {
+		panic(fmt.Sprintf("got %s:%d; want %s:%d", f, l, file, line))
+	}
+}
+
+func main() {
+//-style line directives
+//line :1
+	check("??", 1) // no file specified
+//line foo.go:1
+	check("foo.go", 1)
+//line bar.go:10:20
+	check("bar.go", 10)
+//line :11:22
+	check("bar.go", 11) // no file, but column specified => keep old filename
+
+/*-style line directives */
+/*line :1*/ check("??", 1) // no file specified
+/*line foo.go:1*/ check("foo.go", 1)
+/*line bar.go:10:20*/ check("bar.go", 10)
+/*line :11:22*/ check("bar.go", 11) // no file, but column specified => keep old filename
+
+	/*line :10*/ check("??", 10); /*line foo.go:20*/ check("foo.go", 20); /*line :30:1*/ check("foo.go", 30)
+	check("foo.go", 31)
+}