lib/timeutil: support const correctness for pointer parameter

timeutil_timegm() does not modify the passed structure, so it should indicate that in the signature (even though the GNU extension does not). Signed-off-by: Peter A. Bigot <[email protected]>
mlaz · Sep 20, 2019 · cc1594a · cc1594a
1 parent 5bc06e8
commit cc1594a
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/include/sys/timeutil.h b/include/sys/timeutil.h
@@ -32,7 +32,7 @@ extern "C" {
  *
  * @see http://man7.org/linux/man-pages/man3/timegm.3.html
  */
-time_t timeutil_timegm(struct tm *tm);
+time_t timeutil_timegm(const struct tm *tm);
 
 #ifdef __cplusplus
 }

diff --git a/lib/os/timeutil.c b/lib/os/timeutil.c
@@ -48,7 +48,7 @@ static s64_t time_days_from_civil(s64_t y,
  * @return the signed number of seconds between 1970-01-01T00:00:00
  * and the specified time ignoring leap seconds and DST offsets.
  */
-time_t timeutil_timegm(struct tm *tm)
+time_t timeutil_timegm(const struct tm *tm)
 {
 	s64_t y = 1900 + (s64_t)tm->tm_year;
 	unsigned int m = tm->tm_mon + 1;