2007-12-19 Ed Schonberg <schonberg@adacore.com>
Gary Dismukes <dismukes@adacore.com>
PR ada/15803, ada/15805
* sem_ch6.adb, sem_ch3.adb (Constrain_Access): In Ada2005, diagnose
illegal access subtypes when there is a constrained partial view.
(Check_For_Premature_Usage): New procedure inside
Access_Subprogram_Declaration for checking that an access-to-subprogram
type doesn't reference its own name within any formal parameters or
result type (including within nested anonymous access types).
(Access_Subprogram_Declaration): Add call to Check_For_Premature_Usage.
(Sem_Ch3.Analyze_Object_Declaration, Sem_ch6.Process_Formals): if the
context is an access_to_variable, the expression cannot be an
access_to_constant.
From-SVN: r131079
