/cp
2012-08-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51421
	* decl2.c (mark_used): Consistently return false after errors
	about uses before deduction of auto.
	* semantics.c (finish_id_expression): Check mark_used return
	value and return error_mark_node in case of failure.

/testsuite
2012-08-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51421
	* g++.dg/cpp0x/auto34.C: New.

From-SVN: r190665