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core: avoid crash when reading corrupted git data

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If a merge mishap creates inconsistent data for a dive in git storage,
where the dive references a dive site that no longer exists, the app
would crash when trying to open the cloud storage.

I don't think a NULL dive could ever happen, but this seems fairly cheap
insurance.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2022-02-25 15:11:16 -08:00
parent f7a2ad71ca
commit 3b42aada18
2 changed files with 9 additions and 0 deletions
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1
CHANGELOG.md
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@ -1,3 +1,4 @@
- core: avoid crash with corrupted cloud storage
- planner: make ESC (cancel plan) work when moving handles
- dive list: make dive guide visible in dive list [#3382]
- general: rename dive master to dive guide

8
core/divesite.c
View file

@ -371,6 +371,14 @@ void purge_empty_dive_sites(struct dive_site_table *ds_table)
void add_dive_to_dive_site(struct dive *d, struct dive_site *ds)
{
int idx;
if (!d) {
fprintf(stderr, "Warning: add_dive_to_dive_site called with NULL dive\n");
return;
}
if (!ds) {
fprintf(stderr, "Warning: add_dive_to_dive_site called with NULL dive site\n");
return;
}
if (d->dive_site == ds)
return;
if (d->dive_site) {