From 9cdfc5a511e8fa9c0713a1c84503be74e7fae029 Mon Sep 17 00:00:00 2001
From: Johan Mattsson <39247600+mjunix@users.noreply.github.com>
Date: Sun, 19 Feb 2023 11:18:03 +0100
Subject: [PATCH] Fix potential NULL dereference

---
 glslang/MachineIndependent/ParseContextBase.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/glslang/MachineIndependent/ParseContextBase.cpp b/glslang/MachineIndependent/ParseContextBase.cpp
index 758572bb..c34c04f6 100644
--- a/glslang/MachineIndependent/ParseContextBase.cpp
+++ b/glslang/MachineIndependent/ParseContextBase.cpp
@@ -235,12 +235,12 @@ bool TParseContextBase::lValueErrorCheck(const TSourceLoc& loc, const char* op,
 // Test for and give an error if the node can't be read from.
 void TParseContextBase::rValueErrorCheck(const TSourceLoc& loc, const char* op, TIntermTyped* node)
 {
-    TIntermBinary* binaryNode = node->getAsBinaryNode();
-    const TIntermSymbol* symNode = node->getAsSymbolNode();
-
     if (! node)
         return;
 
+    TIntermBinary* binaryNode = node->getAsBinaryNode();
+    const TIntermSymbol* symNode = node->getAsSymbolNode();
+
     if (node->getQualifier().isWriteOnly()) {
         const TIntermTyped* leftMostTypeNode = TIntermediate::findLValueBase(node, true);