2009-04-15 Ed Schonberg <schonberg@adacore.com>

2009-04-15  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb: improve error message on exponentiation.

2009-04-15  Hristian Kirtchev  <kirtchev@adacore.com>

	* a-calend.adb: Move constant Epoch_Offset from package
	Conversion_Operations to top level.
	(Delay_Operations.To_Duration): Define a constant which represents
	"end of time" and use it as a guard against very distant delay dates.
	Protect the code against overflow when performing the origin shift to
	Unix time.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@146095 138bc75d-0d04-0410-961f-82ee72b054a4