PR c++/13243
	PR c++/12573
	* parser.c (cp_parser_postfix_expression): Tighten handling of
	integral constant expressions.
	(cp_parser_unary_expression): Likewise.
	* pt.c (value_dependent_expression_p): Remove handling for
	COMPONENT_REFs.

	PR c++/13243
	PR c++/12573
	* g++.dg/template/crash14.C: New test.
	* g++.dg/template/dependent-expr3.C: Add dg-error markers.

From-SVN: r74637