test: add test case for issue 13268

See https://go-review.googlesource.com/#/c/17047/ for the bug fix.

Change-Id: Id5b0a37439d0f8f1e668f7c2ac84335b37f3a300
Reviewed-on: https://go-review.googlesource.com/17177
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/test/fixedbugs/issue13268.go b/test/fixedbugs/issue13268.go
new file mode 100644 (file)
index 0000000..2a063fa
--- /dev/null
+++ b/test/fixedbugs/issue13268.go
@@ -0,0 +1,48 @@
+// 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.
+
+// Test error message when EOF is encountered in the
+// middle of a BOM.
+//
+// Since the error requires an EOF, we cannot use the
+// errorcheckoutput mechanism.
+
+package main
+
+import (
+       "io/ioutil"
+       "log"
+       "os"
+       "os/exec"
+       "runtime"
+       "strings"
+)
+
+func main() {
+       // cannot use temp file on nacl via child process
+       if runtime.GOOS == "nacl" {
+               return
+       }
+
+       // create source
+       f, err := ioutil.TempFile("", "issue13268-")
+       if err != nil {
+               log.Fatalf("could not create source file: %v", err)
+       }
+       f.Write([]byte("package p\n\nfunc \xef\xef")) // if this fails, we will die later
+       f.Close()
+       defer os.Remove(f.Name())
+
+       // compile and test output
+       cmd := exec.Command("go", "tool", "compile", f.Name())
+       out, err := cmd.CombinedOutput()
+       if err == nil {
+               log.Fatalf("expected cmd/compile to fail")
+       }
+       if strings.HasPrefix(string(out), "illegal UTF-8 sequence") {
+               log.Fatalf("error %q not found", out)
+       }
+}