HP gnu source-level debugger 5992-4701 Manuale Utente Scaricare il pdf (Pagina 97)

Convenience variables are prefixed with '$'. Any name preceded by '$' can be used for

a convenience variable, unless it is one of the predefined machine-specific register

names (see “Registers” (page 98)). (Value history references, in contrast, are numbers

preceded by '$'. See “Value history” (page 95).)

You can save a value in a convenience variable with an assignment expression, just as

you would set a variable in your program. For example:

set $foo = *object_ptr

would save in $foo the value contained in the object pointed to by object_ptr.

Using a convenience variable for the first time creates it, but its value is void until you

assign a new value. You can alter the value with another assignment at any time.

Convenience variables have no fixed types. You can assign a convenience variable any

type of value, including structures and arrays, even if that variable already has a value

of a different type. The convenience variable, when used as an expression, has the type

of its current value.

show convenience

Print a list of convenience variables used so far, and their

values. Abbreviated show conv.

A convenient variable can be used as a counter to be incremented or a pointer to be

advanced. For example, to print a field from successive elements of an array of

structures:

set $i = 0

print bar[$i++]->contents

Repeat that command by typing RET.

Some convenience variables are created automatically by GDB and assigned values.

$_ The variable $_ is automatically set by the x command to the last

address examined (see “Examining memory” (page 87)). Other

commands which provide a default address for x to examine, also set

$_ to that address. These commands include info line and info

breakpoint. The type of $_ is void * except when set by the x

command, in which case it is a pointer to the type of $__.

$__ The variable $__ is automatically set by the x command to the value

found in the last address examined. Its type is chosen to match the

format in which the data was printed.

$_exitcode The variable $_exitcode is automatically set to the exit code when

the program being debugged terminates.

On HP-UX systems, if you refer to a function or variable name that begins with a dollar

sign, GDB searches for a user or system name first, before it searches for a convenience

variable.

8.9 Convenience variables 97

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 368 369

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Cda CI330 Specifiche (28 pagine)

Marchio: Cda | Categoria: Washing machines | Dimensione: 0.80 MB |

Indice

ACCESSORIES

UNPACKING AND

UNBLOCKING THE

WASHING MACHINE

DRAINAGE

PRE-CLEANING

PREPARING

GARMENTS FOR

USING DETERGENT AND ADDITIVES

SELECTING THE WASH PROGRAMME

Programme

Max load

SPIN SPEED SELECTION

DELAY TIME SELECTION AND

ADDITIONAL FUNCTIONS

STARTING UP

LOCK FUNCTION

WASH PROGRAMME PHASES

AND POWER CUTS

Important Important

AND THE OUTSIDE

Important

ELECTRONIC APPLIANCES

04/07 LJ6A030Q9

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