Non-functional: GLSL: Fix #1242; don't pass reference to nullptr.

glslang/MachineIndependent/Intermediate.cpp

@@ -376,7 +376,8 @@ TIntermTyped* TIntermediate::addUnaryMath(TOperator op, TIntermTyped* child, TSo
     return node;
 }
 
-TIntermTyped* TIntermediate::addBuiltInFunctionCall(const TSourceLoc& loc, TOperator op, bool unary, TIntermNode* childNode, const TType& returnType)
+TIntermTyped* TIntermediate::addBuiltInFunctionCall(const TSourceLoc& loc, TOperator op, bool unary,
+    TIntermNode* childNode, const TType& returnType)
 {
     if (unary) {
         //
@@ -420,7 +421,7 @@ TIntermTyped* TIntermediate::setAggregateOperator(TIntermNode* node, TOperator o
     //
     // Make sure we have an aggregate.  If not turn it into one.
     //
-    if (node) {
+    if (node != nullptr) {
         aggNode = node->getAsAggregate();
         if (aggNode == nullptr || aggNode->getOp() != EOpNull) {
             //

glslang/MachineIndependent/ParseHelper.cpp

@@ -950,7 +950,7 @@ TIntermTyped* TParseContext::handleFunctionCall(const TSourceLoc& loc, TFunction
             if (builtIn && fnCandidate->getNumExtensions())
                 requireExtensions(loc, fnCandidate->getNumExtensions(), fnCandidate->getExtensions(), fnCandidate->getName().c_str());
 
-            if (arguments) {
+            if (arguments != nullptr) {
                 // Make sure qualifications work for these arguments.
                 TIntermAggregate* aggregate = arguments->getAsAggregate();
                 for (int i = 0; i < fnCandidate->getParamCount(); ++i) {
@@ -988,7 +988,7 @@ TIntermTyped* TParseContext::handleFunctionCall(const TSourceLoc& loc, TFunction
 
             if (builtIn && fnCandidate->getBuiltInOp() != EOpNull) {
                 // A function call mapped to a built-in operation.
-                result = handleBuiltInFunctionCall(loc, *arguments, *fnCandidate);
+                result = handleBuiltInFunctionCall(loc, arguments, *fnCandidate);
             } else {
                 // This is a function call not mapped to built-in operator.
                 // It could still be a built-in function, but only if PureOperatorBuiltins == false.
@@ -1036,20 +1036,24 @@ TIntermTyped* TParseContext::handleFunctionCall(const TSourceLoc& loc, TFunction
     return result;
 }
 
-TIntermTyped* TParseContext::handleBuiltInFunctionCall(TSourceLoc loc, TIntermNode& arguments,
+TIntermTyped* TParseContext::handleBuiltInFunctionCall(TSourceLoc loc, TIntermNode* arguments,
                                                        const TFunction& function)
 {
     checkLocation(loc, function.getBuiltInOp());
     TIntermTyped *result = intermediate.addBuiltInFunctionCall(loc, function.getBuiltInOp(),
                                                                function.getParamCount() == 1,
-                                                               &arguments, function.getType());
+                                                               arguments, function.getType());
     if (obeyPrecisionQualifiers())
         computeBuiltinPrecisions(*result, function);
 
-    if (result == nullptr)  {
-        error(arguments.getLoc(), " wrong operand type", "Internal Error",
-                                  "built in unary operator function.  Type: %s",
-                                  static_cast<TIntermTyped*>(&arguments)->getCompleteString().c_str());
+    if (result == nullptr) {
+        if (arguments == nullptr)
+            error(loc, " wrong operand type", "Internal Error",
+                                      "built in unary operator function.  Type: %s", "");
+        else
+            error(arguments->getLoc(), " wrong operand type", "Internal Error",
+                                      "built in unary operator function.  Type: %s",
+                                      static_cast<TIntermTyped*>(arguments)->getCompleteString().c_str());
     } else if (result->getAsOperator())
         builtInOpCheck(loc, function, *result->getAsOperator());
 

glslang/MachineIndependent/ParseHelper.h

@@ -309,7 +309,7 @@ public:
     TFunction* handleFunctionDeclarator(const TSourceLoc&, TFunction& function, bool prototype);
     TIntermAggregate* handleFunctionDefinition(const TSourceLoc&, TFunction&);
     TIntermTyped* handleFunctionCall(const TSourceLoc&, TFunction*, TIntermNode*);
-    TIntermTyped* handleBuiltInFunctionCall(TSourceLoc, TIntermNode& arguments, const TFunction& function);
+    TIntermTyped* handleBuiltInFunctionCall(TSourceLoc, TIntermNode* arguments, const TFunction& function);
     void computeBuiltinPrecisions(TIntermTyped&, const TFunction&);
     TIntermNode* handleReturnValue(const TSourceLoc&, TIntermTyped*);
     void checkLocation(const TSourceLoc&, TOperator);