* aspects.ads (No_Duplicates_Allowed): Forbid use of duplicate
Contract_Cases aspects.
* sem_prag.adb (Analyze_Pragma/Pragma_Contract_Case): Rename
POST_CASE into CONTRACT_CASE in both grammar and code, to be
consistent with current language definition. Issue a more precise
error message when the pragma duplicates another pragma or aspect.
* exp_attr.adb (Expand_N_Attribute_Reference): Add processing
for attribute Update.
(Expand_Update_Attribute): New routine.
* par-ch4.adb (P_Name): The sole expression of attribute Update
is an aggregate, parse it accordingly.
* sem_attr.adb (Analyze_Attribute): Verify the legality of
attribute Update.
(Eval_Attribute): Attribute Update does not
need evaluation because it is never static.
* snames.ads-tmpl: Add Name_Update to the list of special names
recognized by the compiler. Add an Attribute_Id for Update.
2012-12-05 Ed Schonberg <schonberg@adacore.com>
* exp_util.adb (Remove_Side_Effects): For purposes of removing
side effects, qualified expressions do not receive a special
treatment, even though in Ada 2012 they are defined as object
references.