2013-12-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	* io/read.c (read_f): Convert assert to runtime error.

2013-12-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	* gfortran.dg/io_err_1.f90: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206102 138bc75d-0d04-0410-961f-82ee72b054a4