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Merged https://github.com/ZDoom/gzdoom/pull/633 ("is" operator fix with readonly)

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Major Cooke 2023-01-21 11:02:35 -06:00
parent 64d4136699
commit 3b46327493
1 changed files with 3 additions and 2 deletions
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5
src/common/scripting/backend/codegen.cpp
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@ -277,7 +277,8 @@ bool AreCompatiblePointerTypes(PType *dest, PType *source, bool forcompare)
// null pointers can be assigned to everything, everything can be assigned to void pointers.
if (fromtype == nullptr || totype == TypeVoidPtr) return true;
// when comparing const-ness does not matter.
if (!forcompare && totype->IsConst != fromtype->IsConst) return false;
// If not comparing, then we should not allow const to be cast away.
if (!forcompare && fromtype->IsConst && !totype->IsConst) return false;
// A type is always compatible to itself.
if (fromtype == totype) return true;
// Pointers to different types are only compatible if both point to an object and the source type is a child of the destination type.
@ -4785,7 +4786,7 @@ FxExpression *FxTypeCheck::Resolve(FCompileContext& ctx)
}
else
{
left = new FxTypeCast(left, NewPointer(RUNTIME_CLASS(DObject)), false);
left = new FxTypeCast(left, NewPointer(RUNTIME_CLASS(DObject), true), false);
ClassCheck = false;
}
right = new FxClassTypeCast(NewClassPointer(RUNTIME_CLASS(DObject)), right, false);