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FIND_TRIP: don't cast a timestamp to a pointer

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The pointer size may not be large enough to contain a timestamp, so make
FIND_TRIP() just pass the pointer to the timestamp instead.

And use an inline function instead of macros with casts.  That gets us
proper type safety while at it, so that we get a warning if somebody
doesn't pass the expected "timestamp_t *".  Plus the code actually looks
simpler and way more straightforward.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2012-09-20 11:08:15 -07:00
parent 4f920b71aa
commit 6d16a15196
2 changed files with 15 additions and 9 deletions
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14
dive.h
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@ -289,11 +289,17 @@ static inline int dive_date_cmp(gconstpointer _a, gconstpointer _b) {
}
/* returns 0 if the dive happened exactly at time */
static inline int dive_when_find(gconstpointer _dive, gconstpointer _time) {
return ((struct dive *)_dive)->when != (timestamp_t) _time;
static inline int dive_when_find(gconstpointer _listentry, gconstpointer _when)
{
const struct dive *dive = _listentry;
const timestamp_t *tsp = _when;
return dive->when != *tsp;
}
#define FIND_TRIP(_when) g_list_find_custom(dive_trip_list, (gconstpointer)(_when), dive_when_find)
static inline GList *FIND_TRIP(timestamp_t *when)
{
return g_list_find_custom(dive_trip_list, when, dive_when_find);
}
#ifdef DEBUG_TRIP
static void dump_trip_list(void)
@ -316,7 +322,7 @@ static void dump_trip_list(void)
static void inline insert_trip(struct dive **trip)
{
struct dive *dive_trip = *trip;
GList *result = FIND_TRIP(dive_trip->when);
GList *result = FIND_TRIP(&dive_trip->when);
if (result) {
if (! DIVE_TRIP(result)->location)
DIVE_TRIP(result)->location = dive_trip->location;