(gdb) print posn
No symbol "posn" in current context.  (     "posn")

 up        . 
findstop   main,     up  
 main. ( down   .)  up  -
  ,       
,   up 1    ,    up. (  -
    up    backtrace.)

(gdb) up

#1 804843 in main () at tabs.c:20

20                              inc = findstop(&posn);

(gdb) print posn
$2=3

(gdb) print *col
No symbol "col" in current context.    (     "col")

(gdb)

 cont ("continue"  )     
,    .  testtabs    ;  -
 ,     .    
.  cont,     , -
,    .    
 quit:

(gdb) cont

Continuing.                      ()

abc     xyz

Program exited normally.        (  )

(gdb) cont

The program is not being run.   (  )

(gdb) quit

$

 gdb   ,    -
.  help   (gdb),     ,
  gdb (       ):

(gdb) help
List of classes of commands:     (  )

aliases --   

breakpoints --     

data --  

files --    

internals   

obscure --  

running --  

stack --  

status --  

support --  

tracepoints --      

user-defined -- ,  

848                                                  VI. 