[LTP] [PATCH 1/2] tst_assert: Use 'long long' to fix 32bit compat mode truncation

[Petr Vorel]

From: Andrea Cervesato <andrea.cervesato@suse.com>

Using 'long long' in tst_assert_ulong() correctly verifies values on
32bit compat mode truncation.

This fixes failure of shmctl03.c on /proc/sys/kernel/shmall on 32bit
(potentially on other sysfs files).

Reported-by: Wei Gao <wegao@suse.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
[ pvorel: separate into its own commit, write the commit message ]
Co-developed-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 lib/tst_assert.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/tst_assert.c b/lib/tst_assert.c
index b68bd5d397..5a4896ac52 100644
--- a/lib/tst_assert.c
+++ b/lib/tst_assert.c
@@ -25,16 +25,17 @@ void tst_assert_int(const char *file, const int lineno, const char *path, int va
 
 void tst_assert_ulong(const char *file, const int lineno, const char *path, unsigned long val)
 {
-	unsigned long sys_val;
+	unsigned long long sys_val;
 
-	safe_file_scanf(file, lineno, NULL, path, "%lu", &sys_val);
+	safe_file_scanf(file, lineno, NULL, path, "%llu", &sys_val);
 
-	if (val == sys_val) {
+	if (val == (unsigned long)sys_val) {
 		tst_res_(file, lineno, TPASS, "%s = %lu", path, val);
 		return;
 	}
 
-	tst_res_(file, lineno, TFAIL, "%s != %lu got %lu", path, val, sys_val);
+	tst_res_(file, lineno, TFAIL, "%s != %lu got %lu",
+		path, val, (unsigned long)sys_val);
 }
 
 void tst_assert_file_int(const char *file, const int lineno, const char *path, const char *prefix, int val)
-- 
2.55.0