re PR c++/83300 (Segmentation fault with template and __attribute__((vector_size (sizeof(int) * N)));)

	PR c++/83300
	* decl2.c (save_template_attributes): Add flags argument, if
	not ATTR_FLAG_TYPE_IN_PLACE, *decl_p is a type and we want to
	modify TYPE_ATTRIBUTES, add them on type attribute variant.

	* g++.dg/ext/vector33.C: New test.

From-SVN: r255783