Question on GDB debug trace synchronization

[Andrew Cagney]

> Hello,
> I am new for the GDB. I met a problem when I debug my user level library by
> using DDD on Linux (backend is GDB). I couldn't solve it.
> When I trace several layers of the functions, the source code and binary
> code not synchronized, (it synchronized at first time). After I change some
> code, rebuild my library, it not synchronize any more. I deleted all the
> object files manually, recopy entire directory tree, rebuild it, but still,
> not synchronized. 
> Could someone tell me what cause this problem and how to solve it?

Can you provide more details?  Such as an example using the GDB console.

A wild guess, based on you mentioning libraries, is that GDB doesn't 
notice that the shared library changed across runs and forgot to re-load 
those symbols.

Andrew