overlaytopleft/games-fps/gzdoom/files/0030-Fixed-a-bug-where-calling-an-invalid-virtual-functio.patch

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From c0945a116a60e7248bc3356a13b2fa0b49d42db1 Mon Sep 17 00:00:00 2001
From: CandiceJoy <candice@candicejoy.com>
Date: Thu, 26 Jan 2023 07:39:58 -0600
Subject: [PATCH 30/51] Fixed a bug where calling an invalid virtual function
would cause a crash.
---
src/common/scripting/vm/vmexec.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/common/scripting/vm/vmexec.h b/src/common/scripting/vm/vmexec.h
index 6716509da..f303304b8 100644
--- a/src/common/scripting/vm/vmexec.h
+++ b/src/common/scripting/vm/vmexec.h
@@ -849,6 +849,7 @@ static int ExecScriptFunc(VMFrameStack *stack, VMReturn *ret, int numret)
return 0;
}
auto p = o->GetClass();
+ if(p->Virtuals.Size() <= 0) ThrowAbortException(X_OTHER,"Attempted to call an invalid virtual function in class %s",p->TypeName.GetChars());
assert(C < p->Virtuals.Size());
reg.a[a] = p->Virtuals[C];
}
--
2.39.3