Examine C pointers with GDB

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Examine C pointers with GDB



I am readying a book currently, and I am learning to examine pointers in C with GDB. In the book, when you examine the pointer, the output is as follow:


(gdb) x/xw pointer
0xbffff7e0: 0x6c6c6548
(gdb) x/s pointer
0xbffff7e0: "Hello, world!n"
(gdb)



But when I do it myself I get the following output:


(gdb) x/xw pointer
0x7ffff7de59a0 <_dl_fini>: 0xe5894855
(gdb) x/s pointer
0x7ffff7de59a0 <_dl_fini>: "UH211345AWAVAUATSH203354(L213%250177!"



My question is: Why do I get such a different output.
I know I am doing something wrong, but, what is it?



Thanks everyone.





Please add the source code.
– klutt
8 hours ago





why is this downvoted? it's a genuine question, sure, it's lacking the source code, but that's a minor edit. You could at least comment with why you downvoted
– CoffeeTableEspresso
7 hours ago





The different output is because the pointer isn't pointing where I suspect you think it should be. Without the source, this will be impossible to diagnose.
– dgnuff
7 hours ago





@CoffeeTableEspresso Yes, it's a minor edit, but could still be quite important to answer the question. I'll remove the downvote when that is fixed, since I think this question is not useful in its current state. I guess you can call it a idownvotedbecau.se/beingunresponsive
– klutt
7 hours ago





probably not initialised pointer
– P__J__
5 hours ago









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