From 14fc2a011ed77cffc68f8599285e5228e03d9f01 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Thu, 16 Jun 2022 10:47:11 +0200
Subject: [PATCH] - ZScript: don't allow multiple assignment syntax with only
 one element.

---
 src/common/scripting/backend/codegen.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/common/scripting/backend/codegen.cpp b/src/common/scripting/backend/codegen.cpp
index 34f6d03b5f..9232a65898 100644
--- a/src/common/scripting/backend/codegen.cpp
+++ b/src/common/scripting/backend/codegen.cpp
@@ -2594,6 +2594,12 @@ FxExpression *FxMultiAssign::Resolve(FCompileContext &ctx)
 	}
 	auto VMRight = static_cast<FxVMFunctionCall *>(Right);
 	auto rets = VMRight->GetReturnTypes();
+	if (Base.Size() == 1)
+	{
+		Right->ScriptPosition.Message(MSG_ERROR, "Multi-assignment with only one element", VMRight->Function->SymbolName.GetChars());
+		delete this;
+		return nullptr;
+	}
 	if (rets.Size() < Base.Size())
 	{
 		Right->ScriptPosition.Message(MSG_ERROR, "Insufficient returns in function %s", VMRight->Function->SymbolName.GetChars());