PR c++/5661
	* cp-tree.h (variably_modified_type_p): New function.
	(grokdeclarator) Tighten check for variably modified types as
	fields.
	* pt.c (convert_template_argument): Do not allow variably modified
	types as template arguments.
	* tree.c (variably_modified_type_p): New function.

	PR c++/5661
	* g++.dg/ext/vlm1.C: New test.
	* g++.dg/ext/vlm2.C: Likewise.

From-SVN: r58060