Suppress warnings for unchanged OpenGL identifiers

src/glow/objects/Program.cc

@@ -490,6 +490,10 @@ void Program::link(bool saveUniformState)
         glGetActiveUniform(mObjectName, GLuint(i), sizeof(uniformName), &length, &size, &type, uniformName);
         std::string uniformNameStd = uniformName;
 
+        // Skip reserved identifiers
+        if (uniformNameStd.find("gl_") == 0)
+            continue;
+
         // Cut down uArray[0] to uArray
         auto const bracketPos = uniformNameStd.find('[');
         if (bracketPos != std::string::npos)