[Bug libfortran/47567] Wrong output for small absolute values with F editing

["jvdelisle at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47567

--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> 2011-02-05 01:32:42 UTC ---
For this special case:

  print "(F1.0)", 0.0   ! => 0 expected *

Up to now, we have interpreted the last sentence in F95 10.5.1.2.1 F95 10.2.1.1
to require this to print '0'.

"Leading zeros are not permitted except for an optional zero immediately to the
left of the decimal symbol if the magnitude of the value in the output field is
less than one. The optional zero shall appear if there would otherwise be no
digits in the output field."

F2008 draft has the same wording.  Of course this is a little bit in
contradiction with another requirement that the decimal point be shown.  I can
easily change this to output the '*', but thought I would mention that what we
have now was done on purpose and is even commented so in the code.

I have all other test examples listed here fixed in a patch at this point.