Ok, this does pretty backtraces. I was hoping for an actual 'reverse cpp': a tool that took preprocessed C source code and undoes macro expansions. I mean, it

Ok, this does pretty backtraces. I was hoping for an actual 'reverse cpp': a tool that took preprocessed C source code and undoes macro expansions. I mean, it should read some C source and some header files, and use the macro definitions found in the header files to try and shorten the source code.