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-rw-r--r--libmount/src/tab_diff.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/libmount/src/tab_diff.c b/libmount/src/tab_diff.c
index d5fbc4d..2765caf 100644
--- a/libmount/src/tab_diff.c
+++ b/libmount/src/tab_diff.c
@@ -309,7 +309,8 @@ done:
#ifdef TEST_PROGRAM
-static int test_diff(struct libmnt_test *ts, int argc, char *argv[])
+static int test_diff(struct libmnt_test *ts __attribute__((unused)),
+ int argc, char *argv[])
{
struct libmnt_table *tb_old, *tb_new;
struct libmnt_tabdiff *diff;
@@ -317,6 +318,9 @@ static int test_diff(struct libmnt_test *ts, int argc, char *argv[])
struct libmnt_fs *old, *new;
int rc = -1, change;
+ if (argc != 3)
+ return -1;
+
tb_old = mnt_new_table_from_file(argv[1]);
tb_new = mnt_new_table_from_file(argv[2]);
diff = mnt_new_tabdiff();