Default Run-Time Error Processing

The Visual Fortran run-time system processes a number of errors that can occur during program execution. A default action is defined for each error recognized by the Visual Fortran run-time system. The default actions described throughout this chapter occur unless overridden by explicit error-processing methods.

The way in which the Visual Fortran run-time system actually processes errors depends upon the following factors:

The severity of the error. For instance, the program usually continues executing when an error message with a severity level of warning or info (informational) is detected.
For certain errors associated with I/O statements, whether or not an I/O error-handling specifier was specified.
For certain errors, whether or not the default action of an associated signal was changed.
For certain errors related to arithmetic operations (including floating-point exceptions), compilation options can determine whether the error is reported and the severity of the reported error.

How arithmetic exception conditions are reported and handled depends on the cause of the exception and how the program was compiled. Unless the program was compiled to handle exceptions, the exception might not be reported until after the instruction that caused the exception condition.

For more information:

About where Visual Fortran run-time message are displayed and their format, see Run-Time Message Display and Format.
On the Visual Fortran return values at program termination, see Values Returned at Program Termination.
On locating errors and the compiler options related to handling errors and exceptions, see Locating Run-Time Errors and Using Traceback Information.
On DF command options and their categories in the visual development environment (Project Settings, Fortran tab), see Categories of Compiler Options.
On Compaq Fortran intrinsic data types and their ranges, see Data Representation.
On the floating-point environment, see The Floating-Point Environment.
On creating exception and termination handlers, see Advanced Exception and Termination Handling Considerations.