2017-04-28  Bob Duff  <duff@adacore.com>

	* sem_util.ads, sem_util.adb (Might_Raise): New function
	that replaces Is_Exception_Safe, but has the opposite
	sense. Is_Exception_Safe was missing various cases -- calls inside
	a pragma Debug, calls inside an 'if' or assignment statement,
	etc. Might_Raise now walks the entire subtree looking for things
	that can raise.
	* exp_ch9.adb (Is_Exception_Safe): Remove.
	(Build_Protected_Subprogram_Body): Replace call to
	Is_Exception_Safe with "not Might_Raise". Misc cleanup (use
	constants where possible).
	* exp_ch7.adb: Rename Is_Protected_Body -->
	Is_Protected_Subp_Body. A protected_body is something different
	in the grammar.

2017-04-28  Eric Botcazou  <ebotcazou@adacore.com>

	* inline.adb (Expand_Inlined_Call): Initialize Targ1 variable.
	* par-ch3.adb (P_Component_Items): Initialize Decl_Node variable.
	(P_Discrete_Choice_List): Initialize Expr_Node variable.
	* par-ch9.adb (P_Task): Initialize Aspect_Sloc variable.
	(P_Protected): Likewise.
	* sem_case.adb (Check_Duplicates):
	Add pragma Warnings on variable.
	* sem_ch12.adb (Preanalyze_Actuals): Initialize Vis variable.
	* sem_ch4.adb (List_Operand_Interps):  Add pragma Warnings on variable.
	* sem_ch5.adb (Analyze_Assignment): Initialize Save_Full_Analysis.
	(Analyze_Exit_Statement): Initialize Scope_Id variable.
	(Analyze_Iterator_Specification): Initialize Bas variable.
	* sem_ch9.adb (Allows_Lock_Free_Implementation): Initialize
	Error_Count (Satisfies_Lock_Free_Requirements): Likewise.
	(Analyze_Accept_Statement): Initialize Task_Nam.

2017-04-28  Hristian Kirtchev  <kirtchev@adacore.com>

	* checks.adb (Install_Primitive_Elaboration_Check):
	Do not generate an elaboration check if all checks have been
	suppressed.

2017-04-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Analyze_Aspect_Specifications, case
	Interrupt_Handler and Attach_Handler): Generate reference
	to protected operation to prevent spurious warnings about
	unreferenced entities. Previous scheme failed with style checks
	enabled.

2017-04-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_prag.adb (Relocate_Pragmas_To_Body): A pragma Warnings
	that follows an expression function must not be relocated to
	the generated body, because it applies to the code that follows.

From-SVN: r247387