re PR c++/2972 (-Wuninitialized could warn about uninitialized member variable usage in constructors)

2017-04-24  Richard Biener  <rguenther@suse.de>

	PR c++/2972
	* tree-ssa-uninit.c (warn_uninitialized_vars): Handle some
	pointer-based references.

	* g++.dg/warn/Wuninitialized-10.C: New testcase.

From-SVN: r247090