pe_data.stdout = fds[1];
pid = run_helper(change_pre_exec, &pe_data, argv, NULL);
- read_output(fds[0], output, output_len);
+ if (pid > 0) /* Avoid hang as we won't get data in failure case. */
+ read_output(fds[0], output, output_len);
+
os_close_file(fds[0]);
os_close_file(fds[1]);