2017-08-10  Martin Liska  <mliska@suse.cz>

	PR c++/81355
	* c-attribs.c (handle_target_attribute):
	Report warning for an empty string argument of target attribute.
2017-08-10  Martin Liska  <mliska@suse.cz>

	PR c++/81355
	* g++.dg/other/pr81355.C: New test.

From-SVN: r251020