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Printing source lines

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.
   Here are the forms of the `list' command most commonly used:
`list LINENUM'
     Print lines centered around line number LINENUM in the current
     source file.
     Print lines centered around the beginning of function FUNCTION.
     Print more lines.  If the last lines printed were printed with a
     `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 (*note Examining the
     Stack: Stack.), this prints lines centered around that line.
`list -'
     Print lines just before the lines last printed.
   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 COUNT'
     Make the `list' command display COUNT source lines (unless the
     `list' argument explicitly specifies some other number).
`show listsize'
     Display the number of lines that `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
"linespecs".  Linespecs specify source lines; there are several ways of
writing them, but the effect is always to specify some source line.
Here is a complete description of the possible arguments for `list':
     Print lines centered around the line specified by LINESPEC.
     Print lines from FIRST to LAST.  Both arguments are linespecs.
`list ,LAST'
     Print lines ending with LAST.
`list FIRST,'
     Print lines starting with FIRST.
`list +'
     Print lines just after the lines last printed.
`list -'
     Print lines just before the lines last printed.
     As described in the preceding table.
   Here are the ways of specifying a single source line--all the kinds
of linespec.
     Specifies line NUMBER of the current source file.  When a `list'
     command has two linespecs, this refers to the same source file as
     the first linespec.
     Specifies the line OFFSET lines after the last line printed.  When
     used as the second linespec in a `list' command that has two, this
     specifies the line OFFSET lines down from the first linespec.
     Specifies the line OFFSET lines before the last line printed.
     Specifies line NUMBER in the source file FILENAME.
     Specifies the line that begins the body of the function FUNCTION.
     For example: in C, this is the line with the open brace.
     Specifies the line of the open-brace that begins the body of the
     function FUNCTION in the file FILENAME.  You only need the file
     name with a function name to avoid ambiguity when there are
     identically named functions in different source files.
     Specifies the line containing the program address ADDRESS.
     ADDRESS may be any expression.