2009-05-15 Sandra Loosemore <sandra@codesourcery.com>

	gcc/
	* fold-const.c (fold_convert_const_real_from_real): Check for
	overflow.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@147589 138bc75d-0d04-0410-961f-82ee72b054a4