From: Michael Stapelberg <michael@stapelberg.de>
Date: Sun, 10 Sep 2017 17:41:49 +0000 (+0200)
Subject: tests: re-seed random number generator in workers
X-Git-Tag: 4.14.1~59
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=429af6dbb35c6b70fec43efffad108bbc361c5f6;p=i3%2Fi3

tests: re-seed random number generator in workers
---

diff --git a/testcases/lib/TestWorker.pm b/testcases/lib/TestWorker.pm
index aee994f7..c56767c4 100644
--- a/testcases/lib/TestWorker.pm
+++ b/testcases/lib/TestWorker.pm
@@ -99,6 +99,11 @@ sub worker_wait {
 
             $0 = $file;
 
+            # Re-seed rand() so that File::Temp’s tempnam produces different
+            # results, making a TOCTOU between e.g. t/175-startup-notification.t
+            # and t/180-fd-leaks.t less likely.
+            srand(time ^ $$);
+
             POSIX::dup2($ipc_fd, 0);
             POSIX::dup2($ipc_fd, 1);
             POSIX::dup2(1, 2);