2014-02-25 Robert Dewar <dewar@adacore.com>

	* einfo.ads, einfo.adb (Has_Shift_Operator): New flag.
	* gnat_rm.texi: Document pragma Provide_Shift_Operators.
	* interfac.ads: Minor code reorganization (add pragma
	Compiler_Unit_Warning).
	* par-prag.adb: Add dummy entry for Provide_Shift_Operators.
	* sem_ch3.adb (Build_Derived_Numeric_Type): Copy
	Has_Shift_Operator flag.
	* sem_intr.adb (Check_Intrinsic_Subprogram): Make sure
	Check_Shift is always called (Check_Shift): Set Has_Shift_Operator.
	* sem_prag.adb: Implement pragma Provide_Shift_Operators.
	* snames.ads-tmpl: Add entries for pragma Provide_Shift_Operators
	Add entry for Name_Amount.
	* checks.adb (Selected_Range_Checks): When checking for a null
	range, make sure we use the base type, and not the subtype for
	deciding a range is null.
	* sem_ch5.adb (Analyze_Loop_Parameter_Specification): Check
	for suspicious loop bound which is outside the range of the
	loop subtype.
	* gnat_ugn.texi: Add documentation section "Determining the
	Chosen Elaboration Order"
	* sem_ch13.adb (UC_Entry): Add field Act_Unit
	(Validate_Unchecked_Conversion): Store Act_Unit
	(Validate_Unchecked_Conversions): Test Warnings_Off in Act_Unit
	* treepr.adb: Minor reformatting.

2014-02-25  Arnaud Charlet  <charlet@adacore.com>

	* usage.adb: Minor: fix typo.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@208138 138bc75d-0d04-0410-961f-82ee72b054a4

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