Crank the warning level all the way to 4. Because it doesn't go to 11.

Author: unknown

Gecko.vcproj

@@ -49,7 +49,7 @@
 				RuntimeLibrary="1"
 				TreatWChar_tAsBuiltInType="false"
 				UsePrecompiledHeader="0"
-				WarningLevel="3"
+				WarningLevel="4"
 				DebugInformationFormat="4"
 			/>
 			<Tool
@@ -114,7 +114,7 @@
 				EnableFunctionLevelLinking="true"
 				TreatWChar_tAsBuiltInType="false"
 				UsePrecompiledHeader="0"
-				WarningLevel="3"
+				WarningLevel="4"
 				DebugInformationFormat="3"
 			/>
 			<Tool