PR c++/6706
	* dwarfout.c (output_reg_number): Fix warning message.
	(output_bound_representation): Check SAVE_EXPR_RTL is not NULL
	before using it.

	PR c++/6706
	* g++.dg/debug/debug6.C: New test.
	* g++.dg/debug/debug7.C: New test.

From-SVN: r55264