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2006-10-31 Ed Schonberg <schonberg@adacore.com> Thomas Quinot <quinot@adacore.com> Javier Miranda <miranda@adacore.com> Gary Dismukes <dismukes@adacore.com> * sem_attr.ads, sem_attr.adb (Analyze_Access_Attribute): Diagnose properly an attempt to apply Unchecked_Access to a protected operation. (OK_Self_Reference): New subprogram to check the legality of an access attribute whose prefix is the type of an enclosing aggregate. Generalizes previous mechanism to handle attribute references nested arbitrarily deep within the aggregate. (Analyze_Access_Attribute): An access attribute whose prefix is a type can appear in an aggregate if this is a default-initialized aggregate for a self-referential type. (Resolve_Attribute, case Access): Ditto. Add support for new implementation defined attribute Stub_Type. (Eval_Attribute, case Attribute_Stub_Type): New case. (Analyze_Attribute, case Attribute_Stub_Type): New case. (Stream_Attribute_Available): Implement using new subprogram from sem_cat, Has_Stream_Attribute_Definition, instead of incorrect Has_Specified_Stream_Attribute flag. Disallow Storage_Size and Storage_Pool for access to subprogram (Resolve_Attribute, case 'Access et al): Take into account anonymous access types of return subtypes in extended return statements. Remove accessibility checks on anonymous access types when Unchecked_Access is used. (Analyze_Attribute): Add support for the use of 'Class to convert a class-wide interface to a tagged type. Add support for the attribute Priority. (Resolve_Attribute, case Attribute_Access): For Ada_05, add test for whether the designated type is discriminated with a constrained partial view and require static matching in that case. Add local variable Des_Btyp. The Designated_Type of an access to incomplete subtype is either its non-limited view if coming from a limited with or its etype if regular incomplete subtype. * sem_cat.ads, sem_cat.adb (Validate_Remote_Access_To_Class_Wide_Type): Fix predicate to identify and allow cases of (expander-generated) references to tag of designated object of a RACW. (Validate_Static_Object_Name): In Ada 2005, a formal object is non-static, and therefore cannot appear as a primary in a preelaborable package. (Has_Stream_Attribute_Definition): New subprogram, abstracted from Has_Read_Write_Attributes. (Has_Read_Write_Attributes): Reimplement in termes of Has_Stream_Attribute_Definition. (Missing_Read_Write_Attributes): When checking component types in a record, unconditionally call Missing_Read_Write_Attributes recursively (remove guard checking for Is_Record_Type / Is_Access_Type). From-SVN: r118298
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