From 3767a9aec17756638ece87c618e1ba97dc2429ce Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sat, 27 Apr 2019 17:05:36 +0300
Subject: [PATCH] - fixed missing null checks in JIT generated code

https://forum.zdoom.org/viewtopic.php?t=64307
---
 src/scripting/vm/jit_store.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/scripting/vm/jit_store.cpp b/src/scripting/vm/jit_store.cpp
index c1d739f0f..6dc1a45a9 100644
--- a/src/scripting/vm/jit_store.cpp
+++ b/src/scripting/vm/jit_store.cpp
@@ -89,6 +89,7 @@ void JitCompiler::EmitSS_R()
 
 void JitCompiler::EmitSO()
 {
+	EmitNullPointerThrow(A, X_WRITE_NIL);
 	cc.mov(asmjit::x86::ptr(regA[A], konstd[C]), regA[B]);
 
 	typedef void(*FuncPtr)(DObject*);
@@ -98,6 +99,7 @@ void JitCompiler::EmitSO()
 
 void JitCompiler::EmitSO_R()
 {
+	EmitNullPointerThrow(A, X_WRITE_NIL);
 	cc.mov(asmjit::x86::ptr(regA[A], regD[C]), regA[B]);
 
 	typedef void(*FuncPtr)(DObject*);
@@ -107,11 +109,13 @@ void JitCompiler::EmitSO_R()
 
 void JitCompiler::EmitSP()
 {
+	EmitNullPointerThrow(A, X_WRITE_NIL);
 	cc.mov(asmjit::x86::ptr(regA[A], konstd[C]), regA[B]);
 }
 
 void JitCompiler::EmitSP_R()
 {
+	EmitNullPointerThrow(A, X_WRITE_NIL);
 	cc.mov(asmjit::x86::ptr(regA[A], regD[C]), regA[B]);
 }