https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83152
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > By my count, you are off by one character in one of your field widths. > Add a space at the end of the lines in the input file or change format to > > person_format='(a,2x,i3,2x,f4.2,1x,f3.0)' > > 1x, not 2x toward the end. (or maybe add a decimal point at end of lines > in input file) The code works if I replace ch3701_input_file.txt with Zahpod Beeblebrox 42 1.85 75. Ford Prefect 25 1.75 65. Arthur Dent 30 1.72 68. Trillian 30 1.65 45. IMO this PR should be resolved as INVALID.