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GUI: Add safety checks to prevent access violations in getListboxBottomEntry #60

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Merged
x64-dev merged 1 commit into from
Oct 10, 2025
Merged

GUI: Add safety checks to prevent access violations in getListboxBottomEntry #60

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8 changes: 8 additions & 0 deletions Generals/Code/GameEngine/Source/GameClient/GUI/Gadget/GadgetListBox.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,14 @@ static Int getListboxBottomEntry( ListboxData *list )
{
Int entry;

// Safety checks to prevent access violations during screen transitions
if( list == NULL )
return 0;
if( list->listData == NULL )
return 0;
if( list->endPos <= 0 )
return 0;

// determine which entry is at the top of the display area
for( entry=list->endPos - 1; ; entry-- )
{
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8 changes: 8 additions & 0 deletions GeneralsMD/Code/GameEngine/Source/GameClient/GUI/Gadget/GadgetListBox.cpp
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,14 @@ static Int getListboxBottomEntry( ListboxData *list )
{
Int entry;

// Safety checks to prevent access violations during screen transitions
if( list == NULL )
return 0;
if( list->listData == NULL )
return 0;
if( list->endPos <= 0 )
return 0;

// determine which entry is at the top of the display area
for( entry=list->endPos - 1; ; entry-- )
{
Expand Down