Fix nullptr dereference on struct parameter error

src/compiler/translator/ParseContext.cpp

@@ -3318,7 +3318,7 @@ TFunction *TParseContext::parseFunctionDeclarator(const TSourceLoc &location, TF
         {
             // ESSL 3.00.6 section 12.10.
             error(location, "Function parameter type cannot be a structure definition",
-                  param.name->c_str());
+                  function->getName().c_str());
         }
     }
 

src/tests/compiler_tests/ShaderValidation_test.cpp

@@ -5275,6 +5275,32 @@ TEST_F(FragmentShaderValidationTest, NamedStructDefinitionAsParameterType)
     }
 }
 
+// Test that a named struct definition is not allowed as a function parameter type.
+// ESSL 3.00.6 section 12.10. ESSL 3.10 January 2016 section 13.10.
+TEST_F(FragmentShaderValidationTest, StructDefinitionAsTypeOfParameterWithoutName)
+{
+    const std::string &shaderString =
+        R"(#version 300 es
+
+        precision highp float;
+        out vec4 my_FragColor;
+
+        float foo(struct S { float field; } /* no parameter name */)
+        {
+            return 1.0;
+        }
+
+        void main()
+        {
+            my_FragColor = vec4(0, 1, 0, 1);
+        })";
+
+    if (compile(shaderString))
+    {
+        FAIL() << "Shader compilation succeeded, expecting failure:\n" << mInfoLog;
+    }
+}
+
 // Test that an unsized const array doesn't assert.
 TEST_F(FragmentShaderValidationTest, UnsizedConstArray)
 {