http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45129
--- Comment #4 from Tobias Burnus <burnus at gcc dot gnu.org> 2010-11-16 14:44:56 UTC --- The question is whether the warning should be only printed if the problem definitely occurs or only if it likely WRITE (*,'(f12.10)') 1.e0 ! prints 1.0000000000 WRITE (*,'(f12.10)') 1.e1 ! prints ************ In this case, ifort prints with "-stand f03": The field width is too small for the number of fractional digits.