gcc/ada/

2017-10-09  Bob Duff  <duff@adacore.com>

	* exp_ch6.adb: (Make_Build_In_Place_Call_In_Object_Declaration): Take
	care of unchecked conversions in addition to regular conversions. This
	takes care of a case where a type is derived from a private untagged
	type that is completed by a tagged controlled type.

2017-10-09  Ed Schonberg  <schonberg@adacore.com>

	* exp_disp.adb (Build_Class_Wide_Check, Replace_Formals): When
	rewriting a class-wide condition, handle properly the case where the
	controlling argument of the operation to which the condition applies is
	an access to a tagged type, and the condition includes a dispatching
	call with an implicit dereference.

gcc/testsuite/

2017-10-09  Ed Schonberg  <schonberg@adacore.com>

	* gnat.dg/class_wide4.adb, gnat.dg/class_wide4_pkg.ads,
	gnat.dg/class_wide4_pkg2.ads: New testcase.

From-SVN: r253554