2014-01-27  Robert Dewar  <dewar@adacore.com>

	* a-wichha.adb (Character_Set_Version): Change to output proper
	value.

2014-01-27  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Is_Input_Only_State): Removed.
	(Is_Non_Volatile_State): Removed.
	(Is_Output_State): Removed.
	* einfo.ads (Is_Input_Only_State): Remove attribute and
	subprogram. Update related entity.
	(Is_Non_Volatile_State):
	Remove attribute and subprogram. Update related entity.
	(Is_Output_State): Removed attribute and subprogram. Update
	related entity.
	* exp_ch6.adb (Expand_Subprogram_Contract): Update comment on
	generated code.
	* sem_ch3.adb (Analyze_Declarations): Analyze the contract of
	an object, not just variables.
	(Analyze_Object_Contract): New routine.
	(Analyze_Variable_Contract): Removed.
	(Process_Discriminants): Detect an illegal use of volatile
	discriminant in SPARK mode.
	* sem_ch5.adb (Analyze_Iterator_Specification):
	Detect an illegal use of volatile loop variable.
	(Analyze_Loop_Parameter_Specification): Detect an illegal use
	of volatile loop variable.
	* sem_ch6.adb (Process_Formals): Update the volatile object
	detection. Detect an illegal formal of mode IN OUT or OUT in
	SPARK mode. Enhance the error messages with references.
	* sem_ch12.adb (Instantiate_Object): Update the volatile object
	detection. Enhance the error messages with references.
	* sem_prag.adb (Analyze_Abstract_State): Enhance the error
	messages with references.
	(Analyze_Contract_Case): Enhance the error messages with references.
	(Analyze_External_Property): Call Check_Duplicate_Property to process
	an external property.
	(Analyze_External_Property_In_Decl_Part): New routine.
	(Analyze_External_State_In_Decl_Part): Removed.
	(Analyze_Global_Item): Detect an illegal
	use of a volatile constant. Detect an illegal use
	of a variable with enabled Effective_Reads. Enhance
	the error messages with references. Remove obsolete
	checks concerning Input_Only and Output_Only states.
	(Analyze_Initialization_Item): Enhance the error messages
	with references.
	(Analyze_Initializes_In_Decl_Part): Do not
	collect the states and variables when the initialization list
	is null.
	(Analyze_Input_Item): Enhance the error messages with references.
	(Analyze_Input_Output): Enhance the error messages with references.
	(Analyze_Pragma): Enhance the error messages with references.
	(Analyze_Refinement_Clause): Code reformatting.
	(Analyze_Refined_Depends_In_Decl_Part):
	Rename global variable Global to Reg_Global and update all
	occurrences. Add local variables D7 and D8. Update the error
	messages with references. Update the call to Collect_Global_Items.
	(Analyze_Refined_Global_In_Decl_Part): Add local variables
	Has_Proof_In_State, Proof_In_Constits and Proof_In_Items. Update
	the call to Collect_Global_Items.  Account for a Proof_In state
	in null / useless refinement checks. Verify the coverage of
	Proof_In states.
	(Check_Dependency_Clause): Remove local variable
	Out_Constits. Remove the retrieval and removal of constituents
	for an Output_Only state. Remove the reporting of unused
	Output_Only state constituents.
	(Check_Duplicate_Mode): Enhance
	the error message with a reference.
	(Check_Duplicate_Property): New routine.
	(Check_Duplicate_Option): Enhance the error message with a reference.
	(Check_External_Properties): Enhance the error message with a reference.
	(Check_Function_Return): Enhance the error message with a reference.
	(Check_In_Out_States): Update
	comment on usage. Add a specialized error message for Proof_In
	constituents. Enhance the error message with a reference.
	(Check_Input_States): Update comment on usage. Account for
	possible Proof_In constituents. Enhance the error message
	with a areference.
	(Check_Matching_Constituent): Enhance the error message with a
	reference.
	(Check_Matching_State): Enchance the error message with a reference.
	(Check_Mode): Add local variable From_Global. Update the call to
	Find_Mode.  Emit more precise error messages concerning extra items
	(Check_Mode_Restriction_In_Enclosing_Context): Consider
	pragma Refined_Global.	Enhance the error message with a
	reference.
	(Check_Mode_Restriction_In_Function): Enhance the error message with
	a reference.
	(Check_Output_States): Update comment on usage. Add local variable
	Posted.  Account for possible Proof_In constituents. Produce a detailed
	list of missing constituents.
	(Check_Proof_In_States): New routine.
	(Check_Refined_Global_Item): Handle Proof_In
	constituents. Enchance the error message with a reference.
	(Collect_Global_Items): Add formal parameters Proof_In_Items
	and Has_Proof_In_State. Update the comment on usage. Account
	for Proof_In items.
	(Create_Or_Modify_Clause): Enchance
	the error message with a reference.
	(Find_Mode): Add
	formal parameter From_Global. Update the comment on usage.
	Detect when the mode is governed by pragma [Refined_]Global.
	(Output_Constituents): Removed.
	(Report_Extra_Constituents):
	Report extra Proof_In constituents.
	(Report_Unused_Constituents): Removed.
	(Usage_Error): Code reformatting. Enhance the error
	messages with reference.
	* sem_prag.ads (Analyze_External_Property_In_Decl_Part): New routine.
	(Analyze_External_State_In_Decl_Part): Removed.
	* sem_res.adb (Resolve_Actuals): Update the volatile object
	detection. Enhance the error message with a reference.
	(Resolve_Entity_Name): Update the volatile object
	detection. Enhance the error message with a reference.
	* sem_util.adb (Is_Refined_State): Add a guard to avoid a crash.
	(Is_SPARK_Volatile_Object): New routine.
	(Has_Volatile_Component): New routine.
	* sem_util.ads (Is_Delegate): Alphabetized.
	(Is_SPARK_Volatile_Object): New routine.
	(Has_Volatile_Component): New routine.
	* snames.ads-tmpl: Remove names Name_Input_Only and Name_Output_Only.

2014-01-27  Ed Schonberg  <schonberg@adacore.com>

	* sem_attr.adb: Resolve fully prefix of 'Update.

From-SVN: r207138