Next: Location Specifications, Up: Source
To print lines from a source file, use the list
command
(abbreviated l
). By default, ten lines are printed.
There are several ways to specify what part of the file you want to
print; see Location Specifications, for the full list.
Here are the forms of the list
command most commonly used:
list
linenumlist
functionlist
list
command, this prints lines following the last lines
printed; however, if the last line printed was a solitary line printed
as part of displaying a stack frame (see Examining the Stack), this prints lines centered around that line.
list -
By default, gdb prints ten source lines with any of these forms of
the list
command. You can change this using set listsize
:
set listsize
countset listsize unlimited
list
command display count source lines (unless
the list
argument explicitly specifies some other number).
Setting count to unlimited
or 0 means there's no limit.
show listsize
list
prints.
Repeating a list
command with <RET> discards the argument,
so it is equivalent to typing just list
. This is more useful
than listing the same lines again. An exception is made for an
argument of `-'; that argument is preserved in repetition so that
each repetition moves up in the source file.
In general, the list
command expects you to supply zero, one or
two location specs. These location specs are interpreted to resolve
to source code lines; there are several ways of writing them
(see Location Specifications), but the effect is always to resolve
to some source lines to display.
Here is a complete description of the possible arguments for list
:
list
locspeclist
first,
lastlist
command has two location specs,
and the source file of the second location spec is omitted, this
refers to the same source file as the first location spec. If either
first or last resolve to more than one source line in the
program, then the list command shows the list of resolved source
lines and does not proceed with the source code listing.
list ,
lastLikewise, if last resolves to more than one source line in the
program, then the list command prints the list of resolved source
lines and does not proceed with the source code listing.
list
first,
list +
list -
list