On 02 May 2006 21:28, Brian Dessent wrote:
> Dave Korn wrote:
>
>> ...because for some reason, despite attaching the debugger, and despite
>> having frozen every other thread and only left one running, every time I
>> try to single step it, it just carries on running as if I'd told it to
>> continue. Dunno why except perhaps the debugger isn't keen to try and let
>> you single-step through debugger-related functions in case it breaks
>> itself or something. This may call for a full two-machine kernel remote
>> debugging session in the end :-(
>
> It's a real shame that Russinovich is apparently aware of this defect
> but remains uninterested in dealing with it past calling it a Cygwin
> deficiency.
It's not his defect, let's get that straight; there's absolutely nothing
wrong with calling "RtlQueryProcessDebugInformation (pid, PDI_BACKTRACE,
buffer);" on any arbitrary pid.
I really do think it *is* because we do funny (meaning non-standard and even
perhaps slightly risky) stuff in DllMain/DLL_THREAD_ATTACH. munge_threadfunc
is pretty high on my list of suspects right now.
cheers,
DaveK
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