tests: aux.sh fix pid handling

Modification of pids is local (to subshell caused by pipeline).
pids was modified in a subshell. That change might be lost.

1 files changed, 5 insertions, 2 deletions

diff --git a/test/lib/aux.sh b/test/lib/aux.sh
index f39d40029..4e2b2461e 100644
--- a/test/lib/aux.sh
+++ b/test/lib/aux.sh
@@ -500,17 +500,20 @@ kill_tagged_processes() {
 	local wait
 
 	# read uses all vars within pipe subshell
+	rm -f PIDS
 	print_procs_by_tag_ "$@" | while read -r pid wait; do
 		if test -n "$pid" ; then
 			echo "Killing tagged process: $pid ${wait:0:120}..."
 			kill -TERM "$pid" 2>/dev/null || true
 		fi
-		pids="$pids $pid"
+		echo "$pid" >> PIDS
 	done
 
+	test -f PIDS || return 0
+
 	# wait if process exited and eventually -KILL
 	wait=0
-	for pid in $pids ; do
+	for pid in $(< PIDS) ; do
 		while ps "$pid" > /dev/null && test "$wait" -le 10; do
 			sleep .2
 			wait=$(( wait + 1 ))