1 files changed, 50 insertions, 0 deletions
diff --git a/src/cmd/go/go_windows_test.go b/src/cmd/go/go_windows_test.go
new file mode 100644
index 0000000..3094212
--- /dev/null
+++ b/src/cmd/go/go_windows_test.go
@@ -0,0 +1,50 @@
+// 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 main_test
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"cmd/go/internal/robustio"
+)
+
+func TestAbsolutePath(t *testing.T) {
+	tg := testgo(t)
+	defer tg.cleanup()
+	tg.parallel()
+
+	tmp, err := os.MkdirTemp("", "TestAbsolutePath")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer robustio.RemoveAll(tmp)
+
+	file := filepath.Join(tmp, "a.go")
+	err = os.WriteFile(file, []byte{}, 0644)
+	if err != nil {
+		t.Fatal(err)
+	}
+	dir := filepath.Join(tmp, "dir")
+	err = os.Mkdir(dir, 0777)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	noVolume := file[len(filepath.VolumeName(file)):]
+	wrongPath := filepath.Join(dir, noVolume)
+	cmd := exec.Command(tg.goTool(), "build", noVolume)
+	cmd.Dir = dir
+	output, err := cmd.CombinedOutput()
+	if err == nil {
+		t.Fatal("build should fail")
+	}
+	if strings.Contains(string(output), wrongPath) {
+		t.Fatalf("wrong output found: %v %v", err, string(output))
+	}
+}