X-Git-Url: https://git.liburcu.org/?p=lttng-tools.git;a=blobdiff_plain;f=tests%2Futils%2Futils.sh;h=1428afd62841ad99a930fc6fee7be617a2ddf1e0;hp=196f636e68b3625731b9a16483be696345042fc0;hb=eb9605eaf65c0c4858511a10e6ae6398cc2dc1c8;hpb=fbf606d77e98bd46d953a40331f039730cfdf532

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index 196f636e6..1428afd62 100644
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -204,8 +204,13 @@ function validate_kernel_version ()
 #  $2 = include special characters; 1 = yes, 0 = no; defaults to yes
 function randstring()
 {
+	local len="${1:-16}"
+
 	[ "$2" == "0" ] && CHAR="[:alnum:]" || CHAR="[:graph:]"
-	cat /dev/urandom 2>/dev/null | tr -cd "$CHAR" 2>/dev/null | head -c ${1:-16} 2>/dev/null
+	# /dev/urandom isn't guaranteed to generate valid multi-byte characters.
+	# Specifying the C locale eliminates the "Illegal byte sequence" error
+	# that 'tr' outputs in such cases.
+	LC_CTYPE=C tr -cd "$CHAR" < /dev/urandom 2>/dev/null | head -c "$len" 2>/dev/null
 	echo
 }