libcpp/ChangeLog:

libcpp/ChangeLog:

2014-08-29  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	* macro.c (warn_of_redefinition): Suppress warnings for builtins
	that lack the NODE_WARN flag, unless Wbuiltin-macro-redefined.
	(_cpp_create_definition): Use Wbuiltin-macro-redefined for
	builtins that lack the NODE_WARN flag.
	* directives.c (do_undef): Likewise.
	* init.c (cpp_init_special_builtins): Do not change flags
	depending on Wbuiltin-macro-redefined.

gcc/c-family/ChangeLog:

2014-08-29  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	* c.opt (Wbuiltin-macro-redefined): Use CPP, Var and Init.
	* c-opts.c (c_common_handle_option): Do not handle here.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@214730 138bc75d-0d04-0410-961f-82ee72b054a4