[tip: objtool/core] objtool/klp: Run the klp tests under set -u

[tip-bot2 for Song Liu]

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     3c961933f3462eab9c7e34e5978de837cc86f59a
Gitweb:        https://git.kernel.org/tip/3c961933f3462eab9c7e34e5978de837cc86f59a
Author:        Song Liu <song@xxxxxxxxxx>
AuthorDate:    Wed, 16 Sep 2026 11:43:01 -07:00
Committer:     Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
CommitterDate: Wed, 16 Sep 2026 17:13:26 -07:00

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@xxxxxxxxxx>
Link: https://patch.msgid.link/20260916184351.2720310-9-song@xxxxxxxxxx
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
---
 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 82e6b0d..294b99c 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