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desktop: fix multi-dive editing of cylinders

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3629a87 changed the handling of cylinders in multi-dives edit.
Not only should the cylinders be the "same", but also at the
same position. The code did not check whether the edited dives
even had that many cylinders, leading to a null-pointer
dereference.

Check whether the cylinder exists before comparing it.

Fixes #3578.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2023-02-10 19:00:49 +01:00 committed by Robert C. Helling
parent b4af03751d
commit eb5d4f2a15
2 changed files with 8 additions and 2 deletions
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1
CHANGELOG.md
View file

@ -1,3 +1,4 @@
desktop: fix crash on cylinder update of multiple dives
desktop: use dynamic tank use drop down in equipment tab and planner
desktop: fix brightness configuration for OSTC4
equipment: Use 'diluent' as default gas use type if the dive mode is 'CCR'

9
commands/command_edit.cpp
View file

@ -1199,19 +1199,24 @@ EditCylinderBase::EditCylinderBase(int index, bool currentDiveOnly, bool nonProt
cyl.reserve(dives.size());
for (dive *d: dives) {
if (index >= d->cylinders.nr)
continue;
if (nonProtectedOnly && is_cylinder_prot(d, index))
continue;
// We checked that the cylinder exists above.
const cylinder_t &cylinder = *get_cylinder(d, index);
if (d != current &&
(!same_cylinder_size(orig, *get_cylinder(d, index)) || !same_cylinder_type(orig, *get_cylinder(d, index))))
(!same_cylinder_size(orig, cylinder) || !same_cylinder_type(orig, cylinder))) {
// when editing cylinders, we assume that the user wanted to edit the 'n-th' cylinder
// and we only do edit that cylinder, if it was the same type as the one in the current dive
continue;
}
divesNew.push_back(d);
// that's silly as it's always the same value - but we need this vector of indices in the case where we add
// a cylinder to several dives as the spot will potentially be different in different dives
indexes.push_back(index);
cyl.push_back(clone_cylinder(*get_cylinder(d, index)));
cyl.push_back(clone_cylinder(cylinder));
}
dives = std::move(divesNew);
}