This line of code

 print'(a)', starts_with("pattern", "pat") ! T 

in stdlib/example/strings/example_starts_with.f90
prints binary because of the a format.

It's not a problem per se, but just checking if it's intentional.

% gfortran example_starts_with.f90 % a.out |& cat -v ^A^@^@^@ ^@^@^@^@ %