re PR libfortran/18982 (open(status="new") does not generate an error if the file...

re PR libfortran/18982 (open(status="new") does not generate an error if the file exists)

2005-01-22  Thomas Koenig  <Thomas.Koenig@online.de>

	PR libfortran/18982
	* io/unix.c (regular_file):  No need to change flags->action
	if an error occurs.  Document this.
	No need to call stat() for STATUS_OLD, open() will
	fail anyway.
	For ACTION_UNSPECIFIED, try open for read-write, then for
	read-only if open fails with EACCES, then for write-only
	if that fails with EACCES again.
	* io/unix.c (open_external): Document changed behavior of
	regular_file.
testsuite/
	* gfortran.dg/open_new.f90: New file.

From-SVN: r94076