* cp-tree.h (TYPE_NOTHROW_P): New macro.
	* decl2.c (delete_sanity): Warn on deleting void *.
	* init.c (build_new_1): Use TYPE_NOTHROW_P.
	* typeck.c (c_expand_return): cp_pedwarn on returning NULL from
	throwing operator new.

From-SVN: r26692