On Android, when running from an APK, |tmpfile| does not work. See b/36991167#comment8. Change-Id: I1415471907e61da5e8c8d1530a2b915fcd991d53 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/58845 Auto-Submit: David Benjamin <davidben@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: Bob Beck <bbe@google.com>