From: Aaron Lipinski <aaron.lipinski@roboticsplus.co.nz>
Date: Thu, 7 May 2026 19:45:01 +0000 (+0400)
Subject: fix: avoid undefined behavior in random seed
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=refs%2Fpull%2F574%2Fhead;p=thirdparty%2Fmtr.git

fix: avoid undefined behavior in random seed
---

diff --git a/ui/mtr.c b/ui/mtr.c
index 6886bce..3814621 100644
--- a/ui/mtr.c
+++ b/ui/mtr.c
@@ -712,7 +712,7 @@ static void init_rand(
     struct timeval tv;
 
     gettimeofday(&tv, NULL);
-    srand((getpid() << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
+    srand(((getpid() & 0xffff) << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
 }
 
 /*