[PATCH v4 08/58] objtool/klp: Run the klp tests under set -u

Most of these assertions end in a grep, and an empty pattern matches
anything.  So a mistyped variable name in a test does not fail: it expands
to nothing, the grep succeeds, and the test reports a pass having checked
nothing.  assert_section "$sectoin_nmae" becomes a search for two adjacent
spaces, which readelf's column padding satisfies on every line.

Refuse unset variables.  lib.sh guards the few genuinely optional
expansions it has with ${x:-}.

Assisted-by: Claude:claude-opus-5
Signed-off-by: Song Liu <song@kernel.org>
---
 tools/objtool/tests/lib.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/objtool/tests/lib.sh b/tools/objtool/tests/lib.sh
index 026b3fac2353..9c3d5fbded9e 100644
--- a/tools/objtool/tests/lib.sh
+++ b/tools/objtool/tests/lib.sh

@@ -8,6 +8,8 @@
 # codegen varies between compilers and golden files would report churn instead
 # of regressions.
 
+set -u
+
 TESTS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
 # Tests live in generic/ or in an architecture directory beside it, and each

-- 
2.53.0-Meta