einfo.ads, einfo.adb: Create a limited view of an incomplete type...
2007-08-14 Ed Schonberg <schonberg@adacore.com> Robert Dewar <dewar@adacore.com> Javier Miranda <miranda@adacore.com> Gary Dismukes <dismukes@adacore.com> * einfo.ads, einfo.adb: Create a limited view of an incomplete type, to make treatment of limited views uniform for all visible declarations in a limited_withed package. Improve warnings for in out parameters (Set_Related_Interaface/Related_Interface): Allow the use of this attribute with constants. (Write_Field26_Name): Handle attribute Related_Interface in constants. Warn on duplicate pragma Preelaborable_Initialialization * sem_ch6.ads, sem_ch6.adb (Analyze_Subprogram_Body): Force the generation of a freezing node to ensure proper management of null excluding access types in the backend. (Create_Extra_Formals): Test base type of the formal when checking for the need to add an extra accessibility-level formal. Pass the entity E on all calls to Add_Extra_Formal (rather than Scope (Formal) as was originally being done in a couple of cases), to ensure that the Extra_Formals list gets set on the entity E when the first entity is added. (Conforming_Types): Add missing calls to Base_Type to the code that handles anonymous access types. This is required to handle the general case because Process_Formals builds internal subtype entities to handle null-excluding access types. (Make_Controlling_Function_Wrappers): Create wrappers for constructor functions that need it, even when not marked Requires_Overriding. Improve warnings for in out parameters (Analyze_Function_Return): Warn for disallowed null return Warn on return from procedure with unset out parameter Ensure consistent use of # in error messages (Check_Overriding_Indicator): Add in parameter Is_Primitive. (Analyze_Function_Return): Move call to Apply_Constraint_Check before the implicit conversion of the expression done for anonymous access types. This is required to generate the code of the null excluding check (if required). * sem_warn.ads, sem_warn.adb (Check_References.Publicly_Referenceable): A formal parameter is never publicly referenceable outside of its body. (Check_References): For an unreferenced formal parameter in an accept statement, use the same warning circuitry as for subprogram formal parameters. (Warn_On_Unreferenced_Entity): New subprogram, taken from Output_Unreferenced_Messages, containing the part of that routine that is now reused for entry formals as described above. (Goto_Spec_Entity): New function (Check_References): Do not give IN OUT warning for dispatching operation Improve warnings for in out parameters (Test_Ref): Check that the entity is not undefinite before calling Scope_Within, in order to avoid infinite loops. Warn on return from procedure with unset out parameter Improved warnings for unused variables From-SVN: r127415
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