Oh, interesting. I will also look at this when time permits.
__
Greg
Le dim. 23 juil. 2023, 22:56, Ralf Hemmecke <r...@hemmecke.org> a écrit :
> > And now, in the same notebook session, ')read bugs2009':
> >
> > [IPKernelApp] ERROR | Exception in message handler:
> > Traceback (most recent call last):
> > File
> "/home/greg/.local/lib/python3.11/site-packages/ipykernel/kernelbase.py",
> > line 409, in dispatch_shell
> > await result
> > File
> "/home/greg/.local/lib/python3.11/site-packages/ipykernel/kernelbase.py",
> > line 720, in execute_request
> > reply_content = self.do_execute(
> > ^^^^^^^^^^^^^^^^
> > File
> "/home/greg/.local/lib/python3.11/site-packages/jfricas/fricaskernel.py",
> > line 212, in do_execute
> > r = self.server.put(block)
> > ^^^^^^^^^^^^^^^^^^^^^^
> > File
> "/home/greg/.local/lib/python3.11/site-packages/jfricas/fricaskernel.py",
> > line 77, in put
> > self.output = json.loads(data.rstrip('\\n'))
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > File "/usr/lib/python3.11/json/__init__.py", line 346, in loads
> > return _default_decoder.decode(s)
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^
> > File "/usr/lib/python3.11/json/decoder.py", line 337, in decode
> > obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > File "/usr/lib/python3.11/json/decoder.py", line 355, in raw_decode
> > raise JSONDecodeError("Expecting value", s, err.value) from None
> > json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
> >
> > And no output in the notebook. It seems jfricas stops processing the
> > command because
> > of an error in its side. I can evaluate bugs2009.input until
> > completion in a terminal for information.
>
> I more or less get the same output as you (just that I don´t see
> ^^^^^^^^^^^^^^^^^^.
>
> But as I said, this bugs2009.input deliberately creates an error. And
> this is what jfricas cannot handle. Any errors of the kind where FriCAS
> jumps into the lisp debugger are bad.
>
> In my gnome-terminal that is attached to the session, I see the following:
>
> Value = T
> Value = WEBSPAD::FRICAS-ACCEPTOR
> (1) -> [2023-07-23 22:47:14 [ERROR]] An arithmetic error
> SB-KERNEL:FLOATING-POINT-EXCEPTION was signalled.
> No traps are enabled? How can this be?
>
> Backtrace for: #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:39328"
> RUNNING {1003AA3673}>
> 0: (TRIVIAL-BACKTRACE:PRINT-BACKTRACE-TO-STREAM
> #<SB-IMPL::STRING-OUTPUT-STREAM {7F2DCC68BBF3}>)
> 1: (HUNCHENTOOT::GET-BACKTRACE)
> 2: ((FLET "H0" :IN HUNCHENTOOT:HANDLE-REQUEST)
> #<SB-KERNEL:FLOATING-POINT-EXCEPTION {100688F113}>)
> 3: (SB-KERNEL::%SIGNAL #<SB-KERNEL:FLOATING-POINT-EXCEPTION {100688F113}>)
> 4: (ERROR SB-KERNEL:FLOATING-POINT-EXCEPTION :OPERATION NIL :OPERANDS NIL)
> 5: ((FLET SB-UNIX::BODY :IN SB-VM:SIGFPE-HANDLER))
> 6: (SB-UNIX::WITH-DEFERRABLE-SIGNALS-UNBLOCKED T #<FUNCTION (FLET
> SB-UNIX::BODY :IN SB-VM:SIGFPE-HANDLER) {7F2DCC68BF2B}>)
> 7: (SB-VM:SIGFPE-HANDLER #<unused argument> #.(SB-SYS:INT-SAP
> #X7F2DCC68C3B0) #.(SB-SYS:INT-SAP #X7F2DCC68C280))
> 8: ((FLET SB-THREAD::EXEC :IN SB-SYS:INVOKE-INTERRUPTION))
> 9: ((FLET "WITHOUT-INTERRUPTS-BODY-1" :IN SB-SYS:INVOKE-INTERRUPTION))
> 10: (SB-SYS:INVOKE-INTERRUPTION #<FUNCTION (FLET SB-UNIX::INTERRUPTION
> :IN SB-UNIX::%INSTALL-HANDLER) {7F2DCC68C0BB}>)
> 11: ((FLET SB-UNIX::RUN-HANDLER :IN SB-UNIX::%INSTALL-HANDLER) 8
> #.(SB-SYS:INT-SAP #X7F2DCC68C3B0) #.(SB-SYS:INT-SAP #X7F2DCC68C280))
> 12: ("foreign function: call_into_lisp")
> 13: ("foreign function: funcall3")
> 14: ("foreign function: interrupt_handle_now_handler")
>
> Because
>
> )set break resume
>
> at the beginning of bugs2009, it is not so bad for the fricas session,
> but still jfricas cannot (currently) handle this case.
>
> I'll see whether some day jfricas can deal with it.
>
> Thanks for reporting.
>
> Ralf
>
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