I've spent the last decade writing debuggers; they are anything but omniscient. It's a miracle that they work at all, frankly. In principle gdb could look at e

I've spent the last decade writing debuggers; they are anything but omniscient. It's a miracle that they work at all, frankly. In principle gdb could look at everything that's going on, but in practice doing so would (a) hit a bug in the compiler's debug output and fail, and (b) take forever for any program worth debugging.