* cp-demangle.c (struct d_print_mod): Add templates field.

	* cp-demangle.c (struct d_print_mod): Add templates field.
	(d_make_builtin_type): Check for NULL type.
	(d_make_extended_operator): Check for NULL name.
	(d_make_ctor, d_make_dtor): Likewise.
	(d_mangled_name): Add top_level parameter.  Change all callers.
	(d_encoding): If DMGL_PARAMS is not set, strip off initial
	CV-qualifiers.
	(d_type): Check some return values we rely on.
	(d_bare_function_type, d_array_type): Likewise.
	(d_pointer_to_member_type, d_template_args): Likewise.
	(d_add_substitution): Fail if argument is NULL.
	(d_print_resize): Check whether buf is NULL.
	(d_print_comp): Save current templates list with each modifier.
	Don't pass the modifier list down when printing a template.
	(d_print_cast): Don't pass the modifier list down when printing a
	template.
	(d_print_mod_list): Temporarily set templates list while printing
	a modifier.
	(d_print_mod): Check that buf is not NULL before using it.
	(d_print_function_type): Print parens if there is no modifier.
	(d_init_info): Permit as many substitutions as there are
	characters in the mangled name.
	* testsuite/demangle-expected: Add two new test cases.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@73970 138bc75d-0d04-0410-961f-82ee72b054a4