From 40a348b1f1b88b1918b771a5baf2e47849079c60 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Fri, 27 Oct 2017 18:15:24 +0300
Subject: [PATCH] Fixed potential crash in resolving of multiple assignment

https://forum.zdoom.org/viewtopic.php?t=58055
https://forum.zdoom.org/viewtopic.php?t=58237
---
 src/scripting/backend/codegen.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/scripting/backend/codegen.cpp b/src/scripting/backend/codegen.cpp
index 249537aaa..564240203 100644
--- a/src/scripting/backend/codegen.cpp
+++ b/src/scripting/backend/codegen.cpp
@@ -2698,6 +2698,8 @@ FxExpression *FxMultiAssign::Resolve(FCompileContext &ctx)
 		auto varaccess = new FxLocalVariable(singlevar, ScriptPosition);
 		auto assignee = new FxTypeCast(varaccess, Base[i]->ValueType, false);
 		LocalVarContainer->Add(new FxAssign(Base[i], assignee, false));
+		// now temporary variable owns the current item
+		Base[i] = nullptr;
 	}
 	auto x = LocalVarContainer->Resolve(ctx);
 	LocalVarContainer = nullptr;