fold-const.c (fold_binary_op_with_conditional_arg): Improve handling of cases where...

fold-const.c (fold_binary_op_with_conditional_arg): Improve handling of cases where one or both branches of the conditional have...

	* fold-const.c (fold_binary_op_with_conditional_arg):  Improve
	handling of cases where one or both branches of the conditional
	have void type, i.e. throw an exception or don't return.
	(fold): Only apply (and undo) type conversion to the non-void
	branches of a COND_EXPR.

	* f/com.c (ffecom_subscript_check_): Cast the failure branch
	of the bounds check COND_EXPR to void, to indicate noreturn.
	(ffe_truthvalue_conversion): Only apply truth value conversion
	to the non-void branches of a COND_EXPR.

From-SVN: r58661