From c1daf811e20a82e63ec39c9f0c4ca7d894e04c38 Mon Sep 17 00:00:00 2001
From: Kienan Stewart <kstewart@efficios.com>
Date: Wed, 11 Dec 2024 10:09:21 -0500
Subject: [PATCH] Tests: Bail out of shell-based tests if bash version is not
 supported
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Change-Id: Ibb3b6d3b6069dae522a00273dd5b2f7990c095f3
Signed-off-by: Kienan Stewart <kstewart@effiicios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---
 tests/utils/utils.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index d291f5986..a6412ceab 100644
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -68,6 +68,12 @@ if [ -z ${LTTNG_TEST_TEARDOWN_TIMEOUT+x} ]; then
 	LTTNG_TEST_TEARDOWN_TIMEOUT=60
 fi
 
+# Some tests use recent bash syntax, e.g. `array_var[-1]` which was introduced
+# in version 4.2. Bailout with a clear error if the bash version isn't supported.
+if [[ "${BASH_VERSINFO[0]}" -lt "4" ]] || [[ "${BASH_VERSINFO[0]}" == "4" && "${BASH_VERSINFO[1]}" -lt "2" ]]; then
+	BAIL_OUT "Bash version '${BASH_VERSION}' is not supported by the test suite"
+fi
+
 # Enable job monitor mode.
 # Here we are mostly interested in the following from the monitor mode:
 #    All processes run in a separate process group.
-- 
2.39.5