PR c++/57551
	* g++.dg/ext/visibility/anon6.C: Update testcase.
	* cp/pt.c (mark_decl_instantiated): Do not export explicit instantiations
	of anonymous namespace templates.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199956 138bc75d-0d04-0410-961f-82ee72b054a4