> > it. If you can, debugging Cygwin via gdb would be the best way to go.
> > Alternatively, if you can't do that, calling gcc indirectly through
> > strace in your IDE environment would provide some trace information
>
>
Here is a strace snippet right around the error's occurrence:
09:19:17 [main] make 384 dtable::build_fhandler: fd 3, fh 0x61550820
09:19:17 [main] make 384 dtable::build_fhandler: fd 4, fh 0x61550960
09:19:17 [main] make 384 fhandler_base::init: created new
fhandler_base for handle 0xD8
09:19:17 [main] make 384 fhandler_base::init: created new
fhandler_base for handle 0x154
09:19:17 [main] make 384 make_pipe: 0 = make_pipe ([3, 4], 16384,
0x10000)
09:19:17 [main] make 384 _close: close (4)
09:19:17 [main] make 384 fhandler_base::close: closing '(null)'
handle 0x154
09:19:17 [main] make 384 dtable::not_open: in not_open,
fds=0x61550128 fd=4 fds[fd]=1632962912 res=0 size=32
09:19:17 [main] make 384 _close: 0 = close (4)
09:19:17 [main] make 384 fhandler_base::set_close_on_exec: set
close_on_exec for (null) to 1
09:19:17 [main] make 384 _fcntl: 0 = fcntl (3, 2, 0x1)
09:19:17 [main] make 384 set_process_mask: old mask = 0, new mask =
1804007
09:19:17 [main] make 384 dtable::not_open: in not_open,
fds=0x61550128 fd=0 fds[fd]=1632961224 res=0 size=32
09:19:17 [main] make 384 dtable::build_fhandler: fd -1, fh
0x61550960
09:19:17 [main] make 384 fhandler_base::dup: in fhandler_base dup
09:19:17 [main] make 384 fhandler_base::dup: dup(unknown disk file)
failed, handle 0, Win32 error 6
09:19:17 [main] make 384 seterrno_from_win_error:
/usr/src/cygwin/winsup/cygwin/fhandler.cc:926 errno 6
09:19:17 [main] make 384 geterrno_from_win_error: windows error 6 ==
errno 9
09:19:17 [main] make 384 vfork: 0 = vfork()
09:19:17 [main] make 384 vfork: exiting vfork, res 0
I'm not sure how far back is relevant to the vfork's setting up for
the make-file's "echo" command that occurs next vs. cleaning up from
checking dependencies (the previous task make was doing)
the build_fhandler: fd=-1 is expected; that's a new dtable being
built, so aside from that the error occurring in fhandler_base::dup (which
we already knew) there's no new info.
Larry, would posting a complete strace be useful? What might I look
for in the strace?
Warm Regards,
Chris
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