2011-08-02 Geert Bosch <bosch@adacore.com>

2011-08-02  Geert Bosch  <bosch@adacore.com>

	* cstand.adb (Register_Float_Type): Print information about type to
	register, if the Debug_Flag_Dot_B is set.
	* debug.adb (Debug_Flag_Dot_B): Document d.b debug option.
	* rtsfind.ads (RE_Max_Base_Digits): New run time entity.
	* sem_ch3.adb (Floating_Point_Type_Declaration): Allow declarations
	with a requested precision of more than Max_Digits digits and no more
	than Max_Base_Digits digits, if a range specification is present and the
	Predefined_Float_Types list has a suitable type to derive from.
	* sem_ch3.adb (Rep_Item_Too_Early): Avoid generating error in the
	case of type completion with pragma Import
	* sem_prag.adb
	(Process_Import_Predefined_Type): Processing to complete a type
	with pragma Import. Currently supports floating point types only.
	(Set_Convention_From_Pragma): Do nothing without underlying type.
	(Process_Convention): Guard against absence of underlying type,
	which may happen when importing incomplete types.
	(Process_Import_Or_Interface): Handle case of importing predefined
	types. Tweak error message.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@177138 138bc75d-0d04-0410-961f-82ee72b054a4