-extern void pedwarn (const char *, ...);
-extern void sorry (const char *, ...);
-extern void inform (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
-
-extern void rest_of_decl_compilation (tree, const char *, int, int);
+/* Pass one of the OPT_W* from options.h as the second parameter. */
+extern bool pedwarn (location_t, int, const char *, ...)
+ ATTRIBUTE_GCC_DIAG(3,4);
+extern bool permerror (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
+extern void sorry (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
+extern void inform (location_t, const char *, ...) ATTRIBUTE_GCC_DIAG(2,3);
+extern void inform_n (location_t, int, const char *, const char *, ...)
+ ATTRIBUTE_GCC_DIAG(3,5) ATTRIBUTE_GCC_DIAG(4,5);
+extern void verbatim (const char *, ...) ATTRIBUTE_GCC_DIAG(1,2);
+
+extern void rest_of_decl_compilation (tree, int, int);