Aurélien Gâteau

Gdb trick: the poor man loop

written on Thursday, April 17, 2008

Suppose you are in the middle of a gdb session, and need to print the content of an array or a class implementing operator[]. Here is a simple way to do that which I just discovered:

(gdb) set $pos=0

(gdb) print array[$pos++]

content of array[0]

(gdb)

content of array[1]

(gdb)

content of array[2]

...

The blank "(gdb)" lines mean i just pressed "return". In this case, gdb executes the previous command again, printing array and incrementing $pos one more time.

Hope this helps, and feel free to comment on any better way to achieve this!

This post was tagged Tips and gdb
blog comments powered by Disqus