On Mon, Apr 19, 2010 at 20:48, Christopher Faylor wrote: > On Mon, Apr 19, 2010 at 10:48:18AM -0400, Larry Hall (Cygwin) wrote: >>On 4/19/2010 7:44 AM, Yuval Emek wrote: >>> On Mon, Apr 19, 2010 at 09:32, Christopher Faylor >>> <cgf-use-the-mailinglist-please...> wrote: >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >><http://cygwin.com/acronyms/#PCYMTNQREAIYR>. Feeding spammers just makes >>them hungry. >> >><snip> >> >>>> p.envptr is supposed to be filled in by the call to _cygwin_crt0_common >>>> in cygwin_attach_dll. It is supposed to be set to the address of the >>>> "environ" variable in the DLL. It is not supposed to be NULL. That >>>> assignment should actually not even be necessary but the fact that >>>> envptr may be NULL is a problem. Of course, it could just be some >>>> non-NULL garbage too. Running in gdb and getting a stack trace would be >>>> instructive. >>> >>> Can you be more specific? (I have been using cygwin for a while, but I >>> never debugged it beforehand.) >>> I can install gdb using setup.exe . What should I do then in order to >>> obtain a stack trace? >> >>Grab a snapshot from <http://cygwin.com/snapshots/>. You want the DLL >>and debugging info at least. > > And, assuming that you can actually run gdb, just "gdb bash" and then "r".
I installed gdb and then downloaded the (latest) snapshots of cygwin1.dll and cygwin1.dbg and extracted then to /bin/ (replacing the previous cygwin1.dll) . Running gdb bash seems to fail since there are no debugging symbols. In particular, when typing r in the gdb prompt, I get the following output: Starting program: /usr/bin/bash [New thread 3800.0x15b4] (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [New thread 3800.0x13f4] [1]+ Stopped gdb bash (Makes sense, I guess, as bash was not compiled with debugging info.) Can I download debugging info for bash from somewhere? (As far as I understand, I don't even have the source code for bash.) Is there something else I can do? > > cgf > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
