https://bugs.kde.org/show_bug.cgi?id=528293
Bug ID: 528293
Summary: Mount Model Tool crashes (SIGSEGV) when
getWizardAlignObject() returns null (Any Stars, no
star within 5°)
Classification: Applications
Product: kstars
Version First 3.8.2
Reported In:
Platform: Ubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Starting a Mount Model alignment point in Any Stars mode crashes if no catalog
star is within 5° of the Halton point. getWizardAlignObject() returns nullptr;
startAlignmentPoint calls setTarget(*target) without a null check.
STEPS TO REPRODUCE
1. Align -> Mount Model Tool; wizard Any Stars; sparse sky region possible.
2. Generate points; Start / resume a point with no nearby catalog star.
OBSERVED RESULT
SIGSEGV in MountModel::startAlignmentPoint → Align::setTarget → dms on null.
Core dump on kstars-bleeding 3.8.2 (2026-07-06).
EXPECTED RESULT
Skip point, mark failed, or fall back; never dereference null.
SOFTWARE/OS VERSIONS
Observed: 3.8.2.
mountmodel.cpp ~ getWizardAlignObject / startAlignmentPoint.
ADDITIONAL INFORMATION
Workaround: Named Stars; check wizard table before Start.
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