[PATCH] lib: fwts_log: shift UL values rather than signed int values

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Shifting signed int values can result in undefined behaviour if the shift
is 31 places.  Make all shifted values of 1 unsigned long to ensure there
is no undefined behaviour. Cleans up clang error messages such as:

(error) Shifting signed 32-bit value by 31 bits is undefined behaviour

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/src/fwts_log.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/src/fwts_log.c b/src/lib/src/fwts_log.c
index 5a7151ec..9d3b3c65 100644
--- a/src/lib/src/fwts_log.c
+++ b/src/lib/src/fwts_log.c
@@ -578,7 +578,7 @@ char *fwts_log_get_filenames(const char *filename, const fwts_log_type type)
 	size_t len = 0;
 
 	for (i = 0; i < 32; i++) {
-		fwts_log_type mask = 1 << i;
+		fwts_log_type mask = 1UL << i;
 		if (type & mask) {
 			if ((tmp = fwts_log_filename(filename, mask)) == NULL) {
 				free(filenames);
@@ -642,7 +642,7 @@ fwts_log *fwts_log_open(
 	 *  the logging
 	 */
 	for (i = 0; i < 32; i++) {
-		fwts_log_type mask = 1 << i;	/* The log type for this iteration */
+		fwts_log_type mask = 1UL << i;	/* The log type for this iteration */
 
 		/* If set then go and open up a log for this log type */
 		if (type & mask) {
-- 
2.19.1