PR c++/28341

	* tree.c (cast_valid_in_integral_constant_expression_p): New
	function.
	* cp-tree.h (tsubst_copy_and_build): Adjust prototype.
	* pt.c (tsubst_expr): Add integral_constant_expression_p
	parameter.
	(fold_non_dependent_expr): Adjust callers of
	tsubst_{expr,copy_and_build}.
	(tsubst_friend_function): Likewise.
	(tsubst_template_arg): Likewise.
	(tsubst_default_argument): Likewise.
	(tsubst_decl): Likewise.
	(tsubst): Likewise.
	(tsubst_omp_clasuses): Likewise.
	(regenerate_decl_fromp_template): Likewise.
	(instantiate_decl): Likewise.
	(tsubst_initializer_list): Likewise.
	(tsubst_enum): Likewise.
	(tsubst_expr): Use RECUR throughout.
	(tsubst_copy_and_build): Change definition of RECUR.  Do not allow
	invalid casts in integral constant expressions.
	* parser.c (cp_parser_postfix_expression): Use
	cast_valid_in_integral_constant_expression_p.
	(cp_parser_cast_expression): Likewise.
	(cp_parser_functional_cast): Likewise.

	PR c++/28346
	* pt.c (tsubst_qualified_id): Do not strip references from
	OFFSET_REFs. 

2006-08-20  Mark Mitchell  <mark@codesourcery.com>

	PR c++/28341
	* g++.dg/template/ref3.C: New test.
	* g++.dg/template/nontype13.C: New test.

	PR c++/28346
	* g++.dg/template/ptrmem17.C: New test.


2006-08-20  Mark Mitchell  <mark@codesourcery.com>

	* objcp-lang.c (objcp_tsubst_copy_and_build): Adjust call to
	tsubst_copy_and_build.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116276 138bc75d-0d04-0410-961f-82ee72b054a4