1 files changed, 65 insertions, 0 deletions
diff --git a/src/os/executable_test.go b/src/os/executable_test.go
index f25ee0c95a..f682105fa6 100644
--- a/src/os/executable_test.go
+++ b/src/os/executable_test.go
@@ -86,3 +86,68 @@ func init() {
 		os.Exit(0)
 	}
 }
+
+func TestExecutableDeleted(t *testing.T) {
+	testenv.MustHaveExec(t)
+	switch runtime.GOOS {
+	case "windows":
+		t.Skip("windows does not support deleting running binary")
+	case "openbsd", "freebsd":
+		t.Skipf("%v does not support reading deleted binary name", runtime.GOOS)
+	}
+
+	dir := t.TempDir()
+
+	src := filepath.Join(dir, "testdel.go")
+	exe := filepath.Join(dir, "testdel.exe")
+
+	err := os.WriteFile(src, []byte(testExecutableDeletion), 0666)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	out, err := osexec.Command(testenv.GoToolPath(t), "build", "-o", exe, src).CombinedOutput()
+	t.Logf("build output:\n%s", out)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	out, err = osexec.Command(exe).CombinedOutput()
+	t.Logf("exec output:\n%s", out)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+const testExecutableDeletion = `package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	before, err := os.Executable()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to read executable name before deletion: %v\n", err)
+		os.Exit(1)
+	}
+
+	err = os.Remove(before)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to remove executable: %v\n", err)
+		os.Exit(1)
+	}
+
+	after, err := os.Executable()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to read executable name after deletion: %v\n", err)
+		os.Exit(1)
+	}
+
+	if before != after {
+		fmt.Fprintf(os.Stderr, "before and after do not match: %v != %v\n", before, after)
+		os.Exit(1)
+	}
+}
+`