Default exception handling

By default, WHENEVER ANY ERROR action is to CONTINUE the program flow.

You can force the runtime system to execute the action defined with

WHENEVER
ERROR

exception class with the following FGLPROFILE entry:

fglrun.mapAnyErrorToError = true

When this entry is set to true, expression errors such as a division by zero will be trapped and execute the action defined by the last WHENEVER ERROR instruction, the default being STOP the program with error display.

-- FGLPROFILE env var is defined to file with:
--    fglrun.mapAnyErrorToError = true

MAIN
  DEFINE x INT
  WHENEVER ERROR CALL my_error_handler 
  LET x = 1 / 0   -- error handler will be called here 
  DISPLAY "It continues...."
END MAIN

FUNCTION my_error_handler()
  DISPLAY "Handler: ", STATUS
END FUNCTION