General Default Exception Handling

The default exception handling support provided depends on the type of application (project type) being developed:

• A default exception handler is included with Fortran Console, Fortran QuickWin, and Fortran Standard Graphics applications.
• No default exception handler is included with Fortran Windows or Fortran DLL applications.

Most exceptions captured by the Visual Fortran default handler are dealt with as severe errors. When an exception occurs, the Fortran run-time system will display an error message and traceback output as described in Handling Run-Time Errors. A run-time error with a severe status causes the Visual Fortran run-time system to terminate the application. Most I/O programming errors are also severe and will terminate an application.

I/O programming errors are not exceptions and cannot be caught by an exception handler. An unhandled I/O programming error is reported through a different mechanism in the Visual Fortran run-time system. Regardless of the application (project) type, unhandled I/O programming error will generate an error message and traceback output.