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- fixed several Destroy methods which blanketly assumed that the object's pointers were valid to use without checks.

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This is not the case if deserialization prematurely aborts. The entire object may be invalid if something in the deserializer I_Error's out.
This commit is contained in:
Christoph Oelckers 2016-09-23 08:49:30 +02:00
parent 657140f985
commit cad2be46ac
4 changed files with 57 additions and 34 deletions
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9
src/g_shared/a_decals.cpp
View file

@ -116,13 +116,16 @@ void DBaseDecal::Destroy ()
void DBaseDecal::Remove ()
{
if (WallPrev == nullptr) Side->AttachedDecals = WallNext;
if (WallPrev == nullptr)
{
if (Side != nullptr) Side->AttachedDecals = WallNext;
}
else WallPrev->WallNext = WallNext;
if (WallNext != nullptr) WallNext->WallPrev = WallPrev;
WallPrev = NULL;
WallNext = NULL;
WallPrev = nullptr;
WallNext = nullptr;
}
void DBaseDecal::Serialize(FSerializer &arc)

33
src/g_shared/a_sectoraction.cpp
View file

@ -49,23 +49,26 @@ bool ASectorAction::IsActivatedByUse() const
void ASectorAction::Destroy ()
{
// Remove ourself from this sector's list of actions
AActor *probe = Sector->SecActTarget;
union
if (Sector != nullptr)
{
AActor **act;
ASectorAction **secact;
} prev;
prev.secact = &Sector->SecActTarget;
// Remove ourself from this sector's list of actions
AActor *probe = Sector->SecActTarget;
union
{
AActor **act;
ASectorAction **secact;
} prev;
prev.secact = &Sector->SecActTarget;
while (probe && probe != this)
{
prev.act = &probe->tracer;
probe = probe->tracer;
}
if (probe != NULL)
{
*prev.act = probe->tracer;
while (probe && probe != this)
{
prev.act = &probe->tracer;
probe = probe->tracer;
}
if (probe != nullptr)
{
*prev.act = probe->tracer;
}
}
Super::Destroy ();

5
src/g_shared/a_skies.cpp
View file

@ -170,7 +170,10 @@ void ASectorSilencer::BeginPlay ()
void ASectorSilencer::Destroy ()
{
Sector->Flags &= ~SECF_SILENT;
if (Sector != nullptr)
{
Sector->Flags &= ~SECF_SILENT;
}
Super::Destroy ();
}

44
src/r_data/r_interpolate.cpp
View file

@ -418,15 +418,18 @@ DSectorPlaneInterpolation::DSectorPlaneInterpolation(sector_t *_sector, bool _pl
void DSectorPlaneInterpolation::Destroy()
{
if (ceiling)
if (sector != nullptr)
{
sector->interpolations[sector_t::CeilingMove] = NULL;
if (ceiling)
{
sector->interpolations[sector_t::CeilingMove] = nullptr;
}
else
{
sector->interpolations[sector_t::FloorMove] = nullptr;
}
sector = nullptr;
}
else
{
sector->interpolations[sector_t::FloorMove] = NULL;
}
for(unsigned i=0; i<attached.Size(); i++)
{
attached[i]->DelRef();
@ -593,13 +596,17 @@ DSectorScrollInterpolation::DSectorScrollInterpolation(sector_t *_sector, bool _
void DSectorScrollInterpolation::Destroy()
{
if (ceiling)
if (sector != nullptr)
{
sector->interpolations[sector_t::CeilingScroll] = NULL;
}
else
{
sector->interpolations[sector_t::FloorScroll] = NULL;
if (ceiling)
{
sector->interpolations[sector_t::CeilingScroll] = nullptr;
}
else
{
sector->interpolations[sector_t::FloorScroll] = nullptr;
}
sector = nullptr;
}
Super::Destroy();
}
@ -694,7 +701,11 @@ DWallScrollInterpolation::DWallScrollInterpolation(side_t *_side, int _part)
void DWallScrollInterpolation::Destroy()
{
side->textures[part].interpolation = NULL;
if (side != nullptr)
{
side->textures[part].interpolation = nullptr;
side = nullptr;
}
Super::Destroy();
}
@ -788,7 +799,10 @@ DPolyobjInterpolation::DPolyobjInterpolation(FPolyObj *po)
void DPolyobjInterpolation::Destroy()
{
poly->interpolation = NULL;
if (poly != nullptr)
{
poly->interpolation = nullptr;
}
Super::Destroy();
}