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https://github.com/ZDoom/gzdoom.git
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- fixed several Destroy methods which blanketly assumed that the object's pointers were valid to use without checks.
This is not the case if deserialization prematurely aborts. The entire object may be invalid if something in the deserializer I_Error's out.
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parent
657140f985
commit
cad2be46ac
4 changed files with 57 additions and 34 deletions
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@ -116,13 +116,16 @@ void DBaseDecal::Destroy ()
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void DBaseDecal::Remove ()
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{
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if (WallPrev == nullptr) Side->AttachedDecals = WallNext;
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if (WallPrev == nullptr)
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{
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if (Side != nullptr) Side->AttachedDecals = WallNext;
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}
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else WallPrev->WallNext = WallNext;
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if (WallNext != nullptr) WallNext->WallPrev = WallPrev;
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WallPrev = NULL;
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WallNext = NULL;
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WallPrev = nullptr;
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WallNext = nullptr;
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}
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void DBaseDecal::Serialize(FSerializer &arc)
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@ -49,23 +49,26 @@ bool ASectorAction::IsActivatedByUse() const
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void ASectorAction::Destroy ()
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{
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// Remove ourself from this sector's list of actions
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AActor *probe = Sector->SecActTarget;
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union
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if (Sector != nullptr)
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{
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AActor **act;
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ASectorAction **secact;
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} prev;
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prev.secact = &Sector->SecActTarget;
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// Remove ourself from this sector's list of actions
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AActor *probe = Sector->SecActTarget;
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union
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{
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AActor **act;
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ASectorAction **secact;
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} prev;
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prev.secact = &Sector->SecActTarget;
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while (probe && probe != this)
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{
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prev.act = &probe->tracer;
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probe = probe->tracer;
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}
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if (probe != NULL)
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{
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*prev.act = probe->tracer;
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while (probe && probe != this)
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{
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prev.act = &probe->tracer;
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probe = probe->tracer;
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}
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if (probe != nullptr)
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{
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*prev.act = probe->tracer;
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}
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}
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Super::Destroy ();
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@ -170,7 +170,10 @@ void ASectorSilencer::BeginPlay ()
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void ASectorSilencer::Destroy ()
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{
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Sector->Flags &= ~SECF_SILENT;
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if (Sector != nullptr)
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{
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Sector->Flags &= ~SECF_SILENT;
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}
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Super::Destroy ();
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}
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@ -418,15 +418,18 @@ DSectorPlaneInterpolation::DSectorPlaneInterpolation(sector_t *_sector, bool _pl
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void DSectorPlaneInterpolation::Destroy()
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{
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if (ceiling)
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if (sector != nullptr)
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{
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sector->interpolations[sector_t::CeilingMove] = NULL;
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if (ceiling)
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{
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sector->interpolations[sector_t::CeilingMove] = nullptr;
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}
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else
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{
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sector->interpolations[sector_t::FloorMove] = nullptr;
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}
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sector = nullptr;
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}
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else
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{
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sector->interpolations[sector_t::FloorMove] = NULL;
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}
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for(unsigned i=0; i<attached.Size(); i++)
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{
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attached[i]->DelRef();
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@ -593,13 +596,17 @@ DSectorScrollInterpolation::DSectorScrollInterpolation(sector_t *_sector, bool _
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void DSectorScrollInterpolation::Destroy()
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{
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if (ceiling)
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if (sector != nullptr)
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{
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sector->interpolations[sector_t::CeilingScroll] = NULL;
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}
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else
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{
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sector->interpolations[sector_t::FloorScroll] = NULL;
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if (ceiling)
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{
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sector->interpolations[sector_t::CeilingScroll] = nullptr;
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}
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else
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{
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sector->interpolations[sector_t::FloorScroll] = nullptr;
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}
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sector = nullptr;
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}
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Super::Destroy();
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}
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@ -694,7 +701,11 @@ DWallScrollInterpolation::DWallScrollInterpolation(side_t *_side, int _part)
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void DWallScrollInterpolation::Destroy()
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{
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side->textures[part].interpolation = NULL;
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if (side != nullptr)
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{
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side->textures[part].interpolation = nullptr;
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side = nullptr;
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}
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Super::Destroy();
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}
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@ -788,7 +799,10 @@ DPolyobjInterpolation::DPolyobjInterpolation(FPolyObj *po)
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void DPolyobjInterpolation::Destroy()
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{
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poly->interpolation = NULL;
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if (poly != nullptr)
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{
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poly->interpolation = nullptr;
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}
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Super::Destroy();
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}
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