dbx90 limitations
Breakpoints set at the beginning of a routine occur before procedure
initialisation; at this point attempting to print or display an assumed-shape
dummy argument, a variable with a complicated EQUIVALENCE or an
automatic variable will produce dbx crashes, dbx90 crashes or nonsensical
output.
Execution must be stepped to the first executable statement (e.g. using the
next command or by setting a second breakpoint) before any of these will
work satisfactorily.
Strides in array sections must be positive.