re PR c++/31138 (ICE with ellipsis)

re PR c++/31138 (ICE with ellipsis)

2007-03-31  Douglas Gregor  <doug.gregor@gmail.com>

	PR c++/31138
	PR c++/31140
	PR c++/31141
	* parser.c (declarator_can_be_parameter_pack): New.
	(cp_parser_template_parameter): Only parse the `...' if the
	declarator can be a parameter pack.
	(cp_parser_parameter_declaration): Ditto. Also, handle when TYPE
	is NULL.
	* pt.c (find_parameter_packs_r): Look into the bounds on integer
	types (they could be used as array bounds).
	(check_for_bare_parameter_packs): Deal with TEMPLATE_PARM_INDEX.
	(tsubst_pack_expansion): Handle failure to expand parameter
	packs.

2007-03-31  Douglas Gregor  <doug.gregor@gmail.com>

	* g++.dg/parser/pr31138.C: New.
	* g++.dg/parser/pr31140.C: New.
	* g++.dg/parser/pr31141.C: New.

From-SVN: r123380