2011-09-02 Robert Dewar <dewar@adacore.com>

2011-09-02  Robert Dewar  <dewar@adacore.com>

	* s-rident.ads: Add new restriction No_Implicit_Aliasing
	* sem_attr.adb: (Analyze_Access_Attribute): Deal with
	No_Implicit_Aliasing
	(Analyze_Attribute, case Address): ditto
	(Analyze_Attribute, case Unrestricted_Access): ditto
	* sem_util.ads, sem_util.adb: (Is_Aliased_View): Handle
	No_Implicit_Aliasing restriction.
	* gnat_rm.texi: Add documentation for No_Implicit_Aliasing

2011-09-02  Ed Schonberg  <schonberg@adacore.com>

	* exp_util.adb: (Possible_Bit_Aligned_Object): If the object
	is an unchecked conversion, apply test to its expression.

2011-09-02  Javier Miranda  <miranda@adacore.com>

	* sem_ch3.adb (Check_Abstract_Overriding): When
	traversing the chain of aliased subprograms avoid reporting a
	redundant error on the current entity.

2011-09-02  Sergey Rybin  <rybin@adacore.com>

	* gnat_ugn.texi: Minor clean up.

2011-09-02  Bob Duff  <duff@adacore.com>

	* s-htable.adb (Set_If_Not_Present): Use renaming
	instead of ":=", because the type Key is limited in the generic (even
	if not in the instances).

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@178440 138bc75d-0d04-0410-961f-82ee72b054a4