How can I print stack trace for caught exceptions in C++ & code injection in C++

I want to have stack trace not for my exceptions only but also for any descendants of std::exception

As I understand, stack trace is completely lost when exception is caught because of stack unwinding (unrolling).

So the only way I see to grab it is injection of code saving context info (stack trace) at the place of std::exception constructor call. Am I right?

If it is the case, please tell me how code injection can be done (if it can) in C++. Your method may be not completely safe because I need it for Debug version of my app only. May be I need to use assembler?

I'm interested only in solution for GCC. It can use c++0x features