make sure to clear dives on dive split failure

The dive splitting code returns an error code when splitting fails, but
it turns out that the C++ UI code doesn't actually look at the error
code, and instead expected the resulting dives to be NULL if an error
happened and the split didn't succeed for whatever reason.

Which is kind of lazy of it, but we might as well clear the resulting
dives and make the UI code happy.  This should fix the problem that
Celia Marlowe reported on the Subsurface google groups forum.

Reported-by: Celia Marlowe
Acked-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Fixes: 145f70aab5 ("Undo: implement split-out of dive computer")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2019-04-14 14:24:24 -07:00 committed by Dirk Hohndel
parent 88a9b8abf5
commit 606c3a0245

View file

@ -3596,8 +3596,6 @@ static int split_dive_at(const struct dive *dive, int a, int b, struct dive **ou
struct divecomputer *dc1, *dc2;
struct event *event, **evp;
*out1 = *out2 = NULL;
/* if we can't find the dive in the dive list, don't bother */
if ((nr = get_divenr(dive)) < 0)
return -1;
@ -3727,6 +3725,7 @@ int split_dive(const struct dive *dive, struct dive **new1, struct dive **new2)
int at_surface, surface_start;
const struct divecomputer *dc;
*new1 = *new2 = NULL;
if (!dive)
return -1;
@ -3768,6 +3767,7 @@ int split_dive_at_time(const struct dive *dive, duration_t time, struct dive **n
int i = 0;
struct sample *sample = dive->dc.sample;
*new1 = *new2 = NULL;
if (!dive)
return -1;
while(sample->time.seconds < time.seconds) {