diff --git a/glslang/Include/revision.h b/glslang/Include/revision.h
index 48929976..da9de2d5 100644
--- a/glslang/Include/revision.h
+++ b/glslang/Include/revision.h
@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "Overload400-PrecQual.1922"
-#define GLSLANG_DATE "19-Mar-2017"
+#define GLSLANG_REVISION "Overload400-PrecQual.1923"
+#define GLSLANG_DATE "21-Mar-2017"
diff --git a/hlsl/hlslGrammar.cpp b/hlsl/hlslGrammar.cpp
index ef7fa140..0e54be52 100755
--- a/hlsl/hlslGrammar.cpp
+++ b/hlsl/hlslGrammar.cpp
@@ -109,7 +109,6 @@ bool HlslGrammar::acceptIdentifier(HlslToken& idToken)
 
     token.string     = idString;
     token.tokenClass = EHTokIdentifier;
-    token.symbol     = nullptr;
     idToken          = token;
 
     advanceToken();
@@ -1298,8 +1297,7 @@ bool HlslGrammar::acceptType(TType& type, TIntermNode*& nodeList)
         // An identifier could be for a user-defined type.
         // Note we cache the symbol table lookup, to save for a later rule
         // when this is not a type.
-        token.symbol = parseContext.lookupUserType(*token.string, type);
-        if (token.symbol != nullptr) {
+        if (parseContext.lookupUserType(*token.string, type) != nullptr) {
             advanceToken();
             return true;
         } else
@@ -2650,7 +2648,7 @@ bool HlslGrammar::acceptPostfixExpression(TIntermTyped*& node)
                 return false;
             }
         } else if (! peekTokenClass(EHTokLeftParen)) {
-            node = parseContext.handleVariable(idToken.loc, idToken.symbol, idToken.string);
+            node = parseContext.handleVariable(idToken.loc, idToken.string);
         } else if (acceptFunctionCall(idToken, node)) {
             // function_call (nothing else to do yet)
         } else {
diff --git a/hlsl/hlslParseHelper.cpp b/hlsl/hlslParseHelper.cpp
index d7de0fdd..31aa1d32 100755
--- a/hlsl/hlslParseHelper.cpp
+++ b/hlsl/hlslParseHelper.cpp
@@ -601,10 +601,9 @@ int HlslParseContext::getMatrixComponentsColumn(int rows, const TSwizzleSelector
 //
 // Handle seeing a variable identifier in the grammar.
 //
-TIntermTyped* HlslParseContext::handleVariable(const TSourceLoc& loc, TSymbol* symbol, const TString* string)
+TIntermTyped* HlslParseContext::handleVariable(const TSourceLoc& loc, const TString* string)
 {
-    if (symbol == nullptr)
-        symbol = symbolTable.find(*string);
+    TSymbol* symbol = symbolTable.find(*string);
     if (symbol && symbol->getAsVariable() && symbol->getAsVariable()->isUserType()) {
         error(loc, "expected symbol, not user-defined type", string->c_str(), "");
         return nullptr;
diff --git a/hlsl/hlslParseHelper.h b/hlsl/hlslParseHelper.h
index aa529b67..b68f117e 100755
--- a/hlsl/hlslParseHelper.h
+++ b/hlsl/hlslParseHelper.h
@@ -62,7 +62,7 @@ public:
     bool builtInName(const TString&);
 
     void handlePragma(const TSourceLoc&, const TVector<TString>&) override;
-    TIntermTyped* handleVariable(const TSourceLoc&, TSymbol* symbol,  const TString* string);
+    TIntermTyped* handleVariable(const TSourceLoc&, const TString* string);
     TIntermTyped* handleBracketDereference(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index);
     TIntermTyped* handleBracketOperator(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index);
     void checkIndex(const TSourceLoc&, const TType&, int& index);
diff --git a/hlsl/hlslScanContext.h b/hlsl/hlslScanContext.h
index c6f47ff5..9d30a12e 100755
--- a/hlsl/hlslScanContext.h
+++ b/hlsl/hlslScanContext.h
@@ -54,7 +54,7 @@ class TPpToken;
 // Everything needed to fully describe a token.
 //
 struct HlslToken {
-    HlslToken() : string(nullptr), symbol(nullptr) { loc.init(); }
+    HlslToken() : string(nullptr) { loc.init(); }
     TSourceLoc loc;                // location of token in the source
     EHlslTokenClass tokenClass;    // what kind of token it is
     union {                        // what data the token holds
@@ -64,7 +64,6 @@ struct HlslToken {
         bool b;
         double d;
     };
-    glslang::TSymbol* symbol;      // if a symbol-table lookup was done already, this is the result
 };
 
 //