decl.c (gnat_to_gnu_entity): If the record has a parent field and a representation clause...

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: If the
	record has a parent field and a representation clause, make sure that
	it is properly aligned.

From-SVN: r223915

gcc/ada/ChangeLog

 2015-06-01  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>: If the
+	record has a parent field and a representation clause, make sure that
+	it is properly aligned.
+
+2015-06-01  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* gcc-interface/trans.c (lvalue_required_p) <N_Indexed_Component>: Deal
 	with character and enumeration literals as index values.
 

gcc/ada/gcc-interface/decl.c

@@ -3019,6 +3019,12 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, int definition)
 	    else
 	      gnu_parent = gnat_to_gnu_type (gnat_parent);
 
+	    /* The parent field needs strict alignment so, if it is to
+	       be created with a component clause below, then we need
+	       to apply the same adjustment as in gnat_to_gnu_field.  */
+	    if (has_rep && TYPE_ALIGN (gnu_type) < TYPE_ALIGN (gnu_parent))
+	      TYPE_ALIGN (gnu_type) = TYPE_ALIGN (gnu_parent);
+
 	    /* Finally we fix up both kinds of twisted COMPONENT_REF we have
 	       initially built.  The discriminants must reference the fields
 	       of the parent subtype and not those of its base type for the