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-rw-r--r--test/fixedbugs/issue11771.go64
1 files changed, 64 insertions, 0 deletions
diff --git a/test/fixedbugs/issue11771.go b/test/fixedbugs/issue11771.go
new file mode 100644
index 0000000..c95dd6b
--- /dev/null
+++ b/test/fixedbugs/issue11771.go
@@ -0,0 +1,64 @@
+// +build !nacl,!js,gc
+// run
+
+// Copyright 2015 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.
+
+// Issue 11771: Magic comments should ignore carriage returns.
+
+package main
+
+import (
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+ "os/exec"
+ "path/filepath"
+ "runtime"
+)
+
+func main() {
+ if runtime.Compiler != "gc" {
+ return
+ }
+
+ dir, err := ioutil.TempDir("", "go-issue11771")
+ if err != nil {
+ log.Fatalf("creating temp dir: %v\n", err)
+ }
+ defer os.RemoveAll(dir)
+
+ // The go:nowritebarrier magic comment is only permitted in
+ // the runtime package. So we confirm that the compilation
+ // fails.
+
+ var buf bytes.Buffer
+ fmt.Fprintln(&buf, `
+package main
+
+func main() {
+}
+`)
+ fmt.Fprintln(&buf, "//go:nowritebarrier\r")
+ fmt.Fprintln(&buf, `
+func x() {
+}
+`)
+
+ if err := ioutil.WriteFile(filepath.Join(dir, "x.go"), buf.Bytes(), 0666); err != nil {
+ log.Fatal(err)
+ }
+
+ cmd := exec.Command("go", "tool", "compile", "x.go")
+ cmd.Dir = dir
+ output, err := cmd.CombinedOutput()
+ if err == nil {
+ log.Fatal("compile succeeded unexpectedly")
+ }
+ if !bytes.Contains(output, []byte("only allowed in runtime")) {
+ log.Fatalf("wrong error message from compiler; got:\n%s\n", output)
+ }
+}