http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50105
--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-08-17 06:40:00 UTC --- Bob's point is that for 1.0, the following rule (10.7.5.2.2) applies: "Magnitude of Internal Value" is 1.0 and thus the "Equivalent Conversion" is F2.5,4(' '). Thus, one has "**" for F followed by 4 spaces. Cf. http://j3-fortran.org/pipermail/j3/2011-August/004575.html