write, open and read statement in fortran dll causing program hang

[Raavi M. Mohindar Rao]

Hello,

I have used write(*,*), open and read statements in one of my fortran dll and compile

gfortran -c *.f90

and

gfortran -shared *.dll

and when importing the above dll in C# and calling a routine causing program to hang for ever.

May I know how else I can compile to avoid the problem?

[jon]

No error trapping? You really should put some in the Fortran code; that might shine some light. Use in OPEN, CLOSE, READ, WRITE, and such.

example:

 OPEN (UNIT=1, FILE=FILNM, STATUS='OLD', IOSTAT=IERR, ERR=100)