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Re: crashes with various programs


On Mon, Aug 07, 2006 at 12:49:56PM -0700, Lester Ingber wrote:
>Since the latest round of updates with cygwin1.dll, I've been having
>various programs crash regularly (daily, sometimes several times per day).
>Lot of times my xterm windows just exit.  Here is an example of a
>non-X program, /usr/bin/pstree that regularly crashes:
>
>% pstree
>Segmentation fault (core dumped)
>
>or
>
>% pstree -p -l
>Exception: STATUS_ACCESS_VIOLATION at eip=610DD891
>eax=00000000 ebx=0022C3E8 ecx=FFFFFFFF edx=00000001 esi=00660AE8 edi=00000001
>ebp=0022C348 esp=0022C344 program=C:\cygwin\bin\pstree.exe, pid 5972, thread main
>cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
>Stack trace:
>Frame     Function  Args
>0022C348  610DD891  (00000001, 0022C360, 00405563, 0022C3F0)
>0022C3D8  610E3F24  (00000001, 0040556D, 0022C850, 000009A8)
>0022CCE8  61092068  (00000003, 61169E2C, 00660090, 00000000)
>0022CD98  61006168  (00000000, 0022CDD0, 610054E0, 0022CDD0)
>610054E0  61004416  (0000009C, A02404C7, E8610FF1, FFFFFF48)
>     22 [main] pstree 5972 _cygtls::handle_exceptions: Error while dumping state (probably corrupted stack)
>Segmentation fault (core dumped)

That stackdump doesn't make any sense given the 1.5.21 cygwin1.dll.
I don't know if that is a clue or not but maybe adding

    error_start=c:/cygwin/bin/gdb.exe

to your CYGWIN environment variable might help see where this is
actually dying.  To get symbolic information you'd also have to install
cygwin1.dbg from the cygwin source tar ball into /bin.

cgf

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