Debugging with GDB Manual HP WDB v6.3 (5900-2180, August 2012)

the-value
^Z^Zvalue-history-end
where history-number is the number it is getting in the value history, history-string is a
string, such as $5 = , which introduces the value to the user, the-value is the output
corresponding to the value itself, and value- flags is `*' for a value which can be dereferenced
and `-' for a value which cannot.
If the value is not added to the value history (it is an invalid float or it is printed with the output
command), the annotation is similar:
^Z^Zvalue-begin value-flags
the-value
^Z^Zvalue-end
When GDB prints an argument to a function (for example, in the output from the backtrace
command), it annotates it as follows:
^Z^Zarg-begin
argument-name
^Z^Zarg-name-end
separator-string
^Z^Zarg-value value-flags
the-value
^Z^Zarg-end
where argument-name is the name of the argument, separator-string is text which separates
the name from the value for the user's benefit (such as =), and value-flags and the-value
have the same meanings as in a value-history-begin annotation.
When printing a structure, GDB annotates it as follows:
^Z^Zfield-begin value-flags
field-name
^Z^Zfield-name-end
separator-string
^Z^Zfield-value
the-value
^Z^Zfield-end
where field-name is the name of the field, separator-string is text which separates the
name from the value for the user's benefit (such as `='), and value-flags and the-value have
the same meanings as in a value-history-begin annotation.
When printing an array, GDB annotates it as follows:
^Z^Zarray-section-begin array-index value-flags
where array-index is the index of the first element being annotated and value-flags has
the same meaning as in a value-history-begin annotation. This is followed by any number
of elements, where the element can be either a single element or a repeated element as shown in
the examples below:
`,' whitespace ; omitted for the first element
the-value
^Z^Zelt
`,' whitespace ; omitted for the first element
the-value
^Z^Zelt-rep number-of-repititions
repetition-string
^Z^Zelt-rep-end
In both cases, the-value is the output for the value of the element and whitespace can contain
spaces, tabs, and newlines. In the repeated case, number-of-repititons is the number of
consecutive array elements which contain that value, and repetition-string is a string which
is designed to convey to the user that repetition is being depicted.
Once all the array elements have been output, the array annotation is ended with:
^Z^Zarray-section-end
236 GDB Annotations