Can gdb make a function pointer point to another location?

Question

I\'ll explain:

Let\'s say I\'m interested in replacing the rand() function used by a certain application.

So I attach gdb to this process and ma

Answer 1

I found this tutorial incredibly useful, and so far its the only way I managed to achieve what I was looking with GDB: Code Injection into Running Linux Application: http://www.codeproject.com/KB/DLL/code_injection.aspx

There is also a good Q&A on code injection for Mac here: http://www.mikeash.com/pyblog/friday-qa-2009-01-30-code-injection.html