2016-05-02 Ed Schonberg <schonberg@adacore.com>

2016-05-02  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Analyze_Allocator): If the expression does not
	have a subtype indication and the type is an unconstrained tagged
	type with defaulted discriminants, create an explicit constraint
	for it during analysis to prevent out-of-order freezing actions
	on generated classwide types.

2016-05-02  Javier Miranda  <miranda@adacore.com>

	* exp_ch5.adb (Expand_N_Assignment_Statement):
	In the runtime check that ensures that the tags of source an
	target match, add missing displacement of the pointer to the
	objects if they cover interface types.

2016-05-02  Ed Schonberg  <schonberg@adacore.com>

	* sem_attr.adb (Analyze_Attribute, case 'Old): Do not use
	base type for attribute when type is discrete: transformation
	is not needed for such types, and leads to spurious errors if
	the context is a case construct.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@235709 138bc75d-0d04-0410-961f-82ee72b054a4