Fortran runtime error: end of file

[Leon Maurer]

Hello everyone,

I have a strange problem. Consider the following fortran program:

program test   

    real :: arg

    

    open(unit=1,file='test.txt',status='unknown')

    read(1,*) arg

    print *, arg

    close(1)

endprogram

test.txt simply is one line with a floating point number -- such as 50e-9. If I compile and run the code on its own, everything is fine:

$ f95 -g -o test test.f90 

$ ./test

   5.00000006E-08

However, if I run the program within DDD, I get

At line 5 of file test.f90 (unit = 1, file = 'test.txt')

Fortran runtime error: End of file

[Inferior 1 (process 16664) exited with code 02]

Does anyone know why the program works fine when run outside DDD but gives an error when run inside DDD?

Thanks for your time.

-Leon