how to use gdb to explore the stack/heap?

Question

Could anyone please give me a quick overview/point me to documentation of a way to inspect the stack (and heap?) of a C program? I thought this should be done with GDB, but if t

Answer 1

you can dump raw memory with the 'x' command

so if you want to look at bits of the stack or heap try things like

x/10b &stackvar
x/200b &heapvar-20

The last one will show you 200 bytes starting from 20 bytes before heapvar. So if you just malloced that you can see the heap header too