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bugfix(contain): Prevent riders from being added to destroyed container object when Reinforcement Pad is destroyed before Troop Crawler drop #2746

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Merged
xezon merged 9 commits into from
Jun 5, 2026
+60 −2
Merged

bugfix(contain): Prevent riders from being added to destroyed container object when Reinforcement Pad is destroyed before Troop Crawler drop #2746

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bb5b0a2
Made hidden drawables visible.
Caball009 May 26, 2026
0844fa1
Added logic to prevent occupant from entering a destroyed container o…
Caball009 May 26, 2026
ee3475d
Added code to prevent the creation of the payload.
Caball009 May 26, 2026
735d827
Added debug assertions for destroyed container objects.
Caball009 May 26, 2026
6544358
Tweaked TSH comments.
Caball009 May 26, 2026
9ad33a2
Moved call to 'Drawable::setDrawableHidden'.
Caball009 May 27, 2026
0ad565e
Changed macro.
Caball009 May 31, 2026
cf0daed
Addressed feedback.
Caball009 Jun 4, 2026
bc480e1
Replicated in Generals.
Caball009 Jun 4, 2026
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18 changes: 18 additions & 0 deletions Generals/Code/GameEngine/Source/GameLogic/Object/Contain/OpenContain.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -234,6 +234,9 @@ void OpenContain::addOrRemoveObjFromWorld(Object* obj, Bool add)
}
else
{
DEBUG_ASSERTCRASH(!getObject()->isEffectivelyDead() && !getObject()->isDestroyed(),
("object shouldn't become an occupant of a dead or destroyed container object"));

// remove object from its group (if any)
obj->leaveGroup();

Expand Down Expand Up @@ -277,11 +280,26 @@ void OpenContain::addToContain( Object *rider )
if( rider == nullptr )
return;

#if !RETAIL_COMPATIBLE_CRC
// TheSuperHackers @bugfix Caball009 25/05/2026 Ensure the occupant is only added to a non-destroyed
// container to avoid an invalid state and use-after-free bugs when accessing the contained by pointer.
if (getObject()->isDestroyed())
{
DEBUG_CRASH(("'%s' is about to be added to '%s', which is destroyed",
rider->getTemplate()->getName().str(), getObject()->getTemplate()->getName().str()));
return;
}
#endif

// TheSuperHackers @bugfix Stubbjax 06/02/2026 Ensure the rider is not destroyed to prevent a
// likely crash if it enters the container on the same frame. If this occurs with an unpatched
// client present in a match, the game has a small chance to mismatch.
if (rider->isDestroyed())
{
DEBUG_CRASH(("'%s', which is destroyed, is about to be added to '%s'",
rider->getTemplate()->getName().str(), getObject()->getTemplate()->getName().str()));
return;
}

#if defined(RTS_DEBUG)
if( !isValidContainerFor( rider, false ) )
Expand Down
13 changes: 12 additions & 1 deletion Generals/Code/GameEngine/Source/GameLogic/Object/Contain/TransportContain.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -362,8 +362,19 @@ UpdateSleepTime TransportContain::update()
{
const TransportContainModuleData *moduleData = getTransportContainModuleData();

if( m_payloadCreated == FALSE )
if (m_payloadCreated == FALSE)
{
#if RETAIL_COMPATIBLE_CRC
createPayload();
#else
// TheSuperHackers @bugfix Caball009 25/05/2026 Don't create payload
// for destroyed object to avoid leaving the payload in an invalid state.
if (!getObject()->isDestroyed())
{
createPayload();
}
#endif
}

if( moduleData && moduleData->m_healthRegen )
{
Expand Down
18 changes: 18 additions & 0 deletions GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Contain/OpenContain.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,9 @@ void OpenContain::addOrRemoveObjFromWorld(Object* obj, Bool add)
}
else
{
DEBUG_ASSERTCRASH(!getObject()->isEffectivelyDead() && !getObject()->isDestroyed(),
("object shouldn't become an occupant of a dead or destroyed container object"));

// remove object from its group (if any)
obj->leaveGroup();

Expand Down Expand Up @@ -292,11 +295,26 @@ void OpenContain::addToContain( Object *rider )
if( rider == nullptr )
return;

#if !RETAIL_COMPATIBLE_CRC
// TheSuperHackers @bugfix Caball009 25/05/2026 Ensure the occupant is only added to a non-destroyed
// container to avoid an invalid state and use-after-free bugs when accessing the contained by pointer.
Comment thread
xezon marked this conversation as resolved.
if (getObject()->isDestroyed())
{
DEBUG_CRASH(("'%s' is about to be added to '%s', which is destroyed",
rider->getTemplate()->getName().str(), getObject()->getTemplate()->getName().str()));
return;
}
#endif

// TheSuperHackers @bugfix Stubbjax 06/02/2026 Ensure the rider is not destroyed to prevent a
// likely crash if it enters the container on the same frame. If this occurs with an unpatched
// client present in a match, the game has a small chance to mismatch.
if (rider->isDestroyed())
{
DEBUG_CRASH(("'%s', which is destroyed, is about to be added to '%s'",
rider->getTemplate()->getName().str(), getObject()->getTemplate()->getName().str()));
return;
}

Drawable *riderDraw = rider->getDrawable();
Bool wasSelected = FALSE;
Expand Down
13 changes: 12 additions & 1 deletion GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Contain/TransportContain.cpp
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -469,8 +469,19 @@ UpdateSleepTime TransportContain::update()
{
const TransportContainModuleData *moduleData = getTransportContainModuleData();

if( m_payloadCreated == FALSE )
if (m_payloadCreated == FALSE)
{
#if RETAIL_COMPATIBLE_CRC
createPayload();
#else
// TheSuperHackers @bugfix Caball009 25/05/2026 Don't create payload
// for destroyed object to avoid leaving the payload in an invalid state.
if (!getObject()->isDestroyed())
{
createPayload();
}
#endif
}

if( moduleData && moduleData->m_healthRegen )
{
Expand Down
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