From: Pádraig Brady <P@draigBrady.com>
Date: Wed, 21 Jan 2026 18:57:53 +0000 (+0000)
Subject: tests: avoid infinite loop in dd failure edge case
X-Git-Tag: v9.10~35
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3e57f08e36d210095989ee1aaa1c5758938ed072;p=thirdparty%2Fcoreutils.git

tests: avoid infinite loop in dd failure edge case

* tests/tee/tee.sh: If dd failed, then tee would spin
writing to the fifo forever, so add a timeout protection.
This was noticed with `export LD_PRELOAD=libasan.so.8`
with a non ASAN build, which induced a failure in dd invocations.
---

diff --git a/tests/tee/tee.sh b/tests/tee/tee.sh
index 1ba5d77ad4..41d1b9acd1 100755
--- a/tests/tee/tee.sh
+++ b/tests/tee/tee.sh
@@ -97,7 +97,7 @@ read_fifo_delayed & pid=$!
 dd count=20 bs=100K if=/dev/zero status=none |
 {
   dd count=0 oflag=nonblock status=none
-  tee || { cleanup_; touch tee.fail; }
+  timeout 10 tee || { cleanup_; touch tee.fail; }
 } >fifo
 test -f tee.fail && fail=1 || cleanup_