modpost: Declare extra_warn with unused attribute
deb46056 · Nathan Chancellor <[email protected]> · 2026-03-25 18:20:30 -07:00
A recent strengthening of -Wunused-but-set-variable (enabled with -Wall)
in clang under a new subwarning, -Wunused-but-set-global, points out an
unused static global variable in scripts/mod/modpost.c:
scripts/mod/modpost.c:59:13: error: variable 'extra_warn' set but not used [-Werror,-Wunused-but-set-global]
59 | static bool extra_warn;
| ^
This variable has been unused since commit 6c6c1fc09de3 ("modpost:
require a MODULE_DESCRIPTION()") but that is expected, as there are
currently no extra warnings at W=1 right now. Declare the variable with
the unused attribute to make it clear to the compiler that this variable
may be unused.
Cc: [email protected]
Fixes: 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()")
Link: https://patch.msgid.link/20260325-modpost-extra_warn-unused-but-set-global-v1-1-2e84003b7e81@kernel.org
Reviewed-by: Nicolas Schier <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
- Commit
- deb4605671cfae3b2803cfbbf4739e7245248398
- Parents
- 742de64b
Changes
1 files changed · +1 −1
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 0c25b5a..c3bc801 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -56,7 +56,7 @@ static bool allow_missing_ns_imports;
static bool error_occurred;
-static bool extra_warn;
+static bool extra_warn __attribute__((unused));
bool target_is_big_endian;
bool host_is_big_endian;