2007-04-06 Olivier Hainque <hainque@adacore.com>

	    Eric Botcazou <botcazou@adacore.com>

	* decl.c (gnat_to_gnu_entity) <E_Constant>: Associate an external
	VAR_DECL to a CONST_DECL we make for a public constant when we know the
	corresponding definition has created the so made visible variable.
	Handle anonymous access to protected subprogram.
	(gnat_to_gnu_entity) <E_Variable>: Do not make the underlying type of an
	object with an address clause volatile.  Re-enable original fix.
	<E_Subprogram_Type>: Set TYPE_REF_CAN_ALIAS_ALL on the reference type
	too.
	(gnat_to_gnu_entity) <E_Class_Wide_Type>: Retrieve the TYPE_DECL
	associated with either the Equivalent or Root type, instead of the
	naked type node.
	(gnat_to_gnu_entity): Manually mark the top of the DECL_FIELD_OFFSET
	subtree for every field of a global record type.
	(gnat_to_gnu_entity) <E_Record_Subtype>: If the subtype has
	discriminants, invoke again variable_size on its newly computed sizes.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123557 138bc75d-0d04-0410-961f-82ee72b054a4

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