diff --git a/config/gnu-warnings/error-general b/config/gnu-warnings/error-general
index 8405c40110..31cc26c8d5 100644
--- a/config/gnu-warnings/error-general
+++ b/config/gnu-warnings/error-general
@@ -11,6 +11,8 @@
 -Werror=packed
 -Werror=pointer-sign
 -Werror=pointer-to-int-cast
+-Werror=int-to-pointer-cast
+-Werror=int-conversion
 -Werror=redundant-decls
 -Werror=strict-prototypes
 -Werror=switch