[emscripten] Add -Werror=overloaded-virtual.

peter-b · peter-b · commit 4609755d44ef · 2015-11-05T14:55:42.000Z
Turn "overloaded-virtual" warnings into errors when compiling for
emscripten.
diff --git a/config/emscripten-settings.gypi b/config/emscripten-settings.gypi
@@ -42,6 +42,8 @@
 		'-fno-exceptions',
 		'-fno-rtti',
 		'-std=<(c++_std)',
+
+		'-Werror=overloaded-virtual',
 	],
 
 	'target_conditions':
