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3.7 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.