/cp
2018-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84348
	* decl.c (grokdeclarator): Early return error_mark_node upon
	ill-formed friend declaration.

/testsuite
2018-02-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84348
	* g++.dg/cpp0x/auto50.C: New.
	* g++.dg/parse/friend12.C: Adjust.

From-SVN: r257802