Executing code if debuggee is a crash dump?

Hi everyone,

I'm looking into implementing debugger extensions that help with 
debugging crash dumps of "async" Rust executables. Such an extension 
would need to inspect the complex internals of several async runtime 
implementations. We could potentially make the extension more robust and 
easier to maintain if we provided a standardized inspection API in the 
various runtimes and have the debugger interact with that. The functions 
behind this API would be restricted to not interact with the environment 
(e.g. not allocate memory, etc).

However, my research so far indicates that neither GDB nor any other 
debugger is capable of executing code in a crash dump. Is that true or 
am I overlooking something?
Would anybody here be able give me a definite answer to this question?

Thanks a lot for your help!

-Michael