2007-05-06  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/31201
	* runtime/error.c (runtime_error_at): New function.
	(generate_error): Export this function.
	* gfortran.map: Add _gfortran_generate_error and
	_gfortran_runtime_error_at.
	* libgfortran.h: Add comment to reference error codes in front end.
	(library_start): Locate prototype with library_end macro and add
	a new comment.  Add prototype for runtime_error_at. Export prototype for
	generate_error.
	* io/lock.c (library_start): Fix check for error condition.
	* io/transfer.c (data_transfer_init): Add library check.

From-SVN: r124479