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-rw-r--r--login/programs/utmpdump.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/login/programs/utmpdump.c b/login/programs/utmpdump.c
index d1b5da235c..225b67a265 100644
--- a/login/programs/utmpdump.c
+++ b/login/programs/utmpdump.c
@@ -27,6 +27,17 @@
static void
print_entry (struct utmp *up)
{
+ /* Mixed 32-/64-bit systems may have timeval structs of different sixe
+ but need struct utmp to be the same size. So in 64-bit up->ut_tv may
+ not be a timeval but a struct of __int32_t's. This would cause a compile
+ time warning and a formating error when 32-bit int is passed where
+ a 64-bit long is expected. So copy up->up_tv to a temporary timeval.
+ This is 32-/64-bit agnostic and expands the timeval fields to the
+ expected size as needed. */
+ struct timeval temp_tv;
+ temp_tv.tv_sec = up->ut_tv.tv_sec;
+ temp_tv.tv_usec = up->ut_tv.tv_usec;
+
(printf) (
/* The format string. */
#if _HAVE_UT_TYPE
@@ -62,8 +73,8 @@ print_entry (struct utmp *up)
, up->ut_host
#endif
#if _HAVE_UT_TV
- , 4 + ctime (&up->ut_tv.tv_sec)
- , up->ut_tv.tv_usec
+ , 4 + ctime (&temp_tv.tv_sec)
+ , temp_tv.tv_usec
#else
, 4 + ctime (&up->ut_time)
#endif