2017-11-09  Yannick Moy  <moy@adacore.com>

	* binde.adb (Diagnose_Elaboration_Problem): Mark procedure No_Return.
	* checks.adb (Apply_Scalar_Range_Check): Rescope variable OK closer to
	use.  Default initialize Hi, Lo.
	(Selected_Range_Checks): Retype Num_Checks more precisely.
	(Determine_Range, Determine_Range_R): Default initialize Hi_Right,
	Lo_Right.
	* contracts.adb (Process_Contract_Cases): Mark parameter Stmts as
	Unmodified.
	(Process_Postconditions): Mark parameter Stmts as Unmodified.
	* exp_attr.adb (Expand_Loop_Entry_Attribute): Default initialize Blk.
	* exp_ch4.adb (Expand_N_Allocator): Default initialize Typ.
	(Expand_Concatenate): Default initialize High_Bound.
	(Optimize_Length_Comparison): Default initialize Ent, Index.
	* exp_ch5.adb (Expand_Predicated_Loop): Default initialize L_Hi and
	L_Lo.
	* exp_ch6.adb (Expand_N_Extended_Return_Statement): Default initialize
	Return_Stmt.
	* exp_ch9.adb (Expand_Entry_Barrier): Default initialize Func_Body and
	remove pragma Warnings(Off).
	* exp_imgv.adb (Expand_Image_Attribute): Default initialize Tent.
	* exp_util.adb (Find_Interface_Tag): Default initialize AI_Tag.
	* freeze.adb (Check_Component_Storage_Order): Default initialize
	Comp_Byte_Aligned rather than silencing messages with pragma
	Warnings(Off), which does not work for CodePeer initialization
	messages, and given that here the possible read of an unitialized value
	depends on a proper use of parameters by the caller.
	* inline.adb (Expand_Inlined_Call): Default initialize Lab_Decl, Targ.
	* sem_ch12.adb (Build_Operator_Wrapper): Default initialize Expr.
	* sem_ch3.adb (Build_Derived_Array_Type): Default initialize
	Implicit_Base.
	* sem_ch4.adb (List_Operand_Interps): Default initialize Nam and remove
	pragma Warnings(Off).
	(Analyze_Case_Expression): Rescope checking block within branch where
	Others_Present is set by the call to Check_Choices.
	* sem_ch5.adb (Analyze_Assignment): Default initialize
	Save_Full_Analysis.
	* sem_ch6.adb (Analyze_Function_Return): Default initialize Obj_Decl,
	and restructure code to defend against previous errors, so that, in
	that case, control does not flow to the elsif condition which read an
	uninitialized Obj_Decl.
	* sem_ch9.adb (Analyze_Requeue): Default initialize Synch_Type.
	(Check_Interfaces): Default initialize Full_T_Ifaces and Priv_T_Ifaces,
	which seem to be left uninitialized and possibly read in some cases.
	* sem_dim.adb (Analyze_Aspect_Dimension_System): Retype Position more
	precisely.  This requires to exchange the test for exiting in case of
	too many positions and the increment to Position, inside the loop.
	* sem_eval.adb (Eval_Concatenation): Default initialize Folded_Val,
	which cannot be read uninitialized, but the reasons for that are quite
	subtle.
	* sem_intr.adb (Check_Intrinsic_Call): Default initialize Rtyp.
	* sem_prag.adb (Collect_Subprogram_Inputs_Outputs): Default initialize
	Spec_Id.
	* sem_res.adb (Make_Call_Into_Operator): Default initialize Opnd_Type,
	and test for presence of non-null Opnd_Type before testing its scope,
	in a test which would read its value uninitialized, and is very rarely
	exercized (it depends on the presence of an extension of System).
	* sem_spark.ads: Update comment to fix name of main analysis procedure.
	* sem_warn.adb (Warn_On_Known_Condition): Default initialize
	Test_Result.
	* set_targ.adb (FailN): Mark procedure with No_Return.
	* stylesw.adb (Save_Style_Check_Options): Delete useless code to
	initialize all array Options to white space, as there is already code
	doing the same for the remaining positions in Options at the end of the
	procedure.

2017-11-09  Eric Botcazou  <ebotcazou@adacore.com>

	* exp_ch11.adb (Possible_Local_Raise): Do not issue the warning for
	generic instantiations either.

From-SVN: r254570