re PR c/66516 (missing diagnostic on taking the address of a builtin function)

re PR c/66516 (missing diagnostic on taking the address of a builtin function)

gcc/ChangeLog
2015-09-03  Martin Sebor  <msebor@redhat.com>

	PR c/66516
	* doc/extend.texi (Other Builtins): Document when the address
	of a built-in function can be taken.

gcc/c-family/ChangeLog
2015-09-03  Martin Sebor  <msebor@redhat.com>

	PR c/66516
	* c-common.h (c_decl_implicit, reject_gcc_builtin): Declare new
	functions.
	* c-common.c (reject_gcc_builtin): Define.

gcc/c/ChangeLog
2015-09-03  Martin Sebor  <msebor@redhat.com>

	PR c/66516
	* c/c-typeck.c (convert_arguments, parser_build_unary_op)
	(build_conditional_expr, c_cast_expr, convert_for_assignment)
	(build_binary_op, _objc_common_truthvalue_conversion): Call
	reject_gcc_builtin.
	(c_decl_implicit): Define.

gcc/cp/ChangeLog
2015-09-03  Martin Sebor  <msebor@redhat.com>

	PR c/66516
	* cp/cp-tree.h (mark_rvalue_use, decay_conversion): Add new
	argument(s).
	* cp/expr.c (mark_rvalue_use): Use new argument.
	* cp/call.c (build_addr_func): Call decay_conversion with new
	argument.
	* cp/pt.c (convert_template_argument): Call reject_gcc_builtin.
	* cp/typeck.c (decay_conversion): Use new argument.
	(c_decl_implicit): Define.

gcc/testsuite/ChangeLog
2015-09-03  Martin Sebor  <msebor@redhat.com>

	PR c/66516
	* g++.dg/addr_builtin-1.C: New test.
	* gcc.dg/addr_builtin-1.c: New test.

From-SVN: r227458