[Gambas-devel] System error... (42)

[Ron]

Bingo!

THROW system error from CCUL.CUL_Read.227

Program received signal SIGTRAP, Trace/breakpoint trap.
THROW (code=42) at gb_error.c:285
285 va_start(args, code);
(gdb) bt
#0  THROW (code=42) at gb_error.c:285
#1  0x00000000004053af in THROW_SYSTEM (err=104, path=0x0) at gb_error.c:325
#2  0x0000000000416171 in STREAM_read (stream=0x7588c0, addr=0x7fffffffdba0,
len=1) at gbx_stream.c:213
#3  0x0000000000416847 in STREAM_read_type (stream=0x7588c0, type=2,
value=0x65c880, len=0) at gbx_stream.c:480
#4  0x000000000041a8a2 in SUBR_read () at gbx_subr_file.c:395
#5  0x000000000043c1b3 in EXEC_loop () at gbx_exec_loop.c:476
#6  0x000000000040c0ab in EXEC_function_loop () at gbx_exec.c:703
#7  0x000000000040c042 in EXEC_function_real () at gbx_exec.c:690
#8  0x00000000004231cb in call_method (object=0x757db0, desc=0x7546a0,
nparam=0) at gbx_api.c:411
#9  0x00000000004233eb in raise_event (observer=0x757db0, object=0x7588b0,
func_id=11, nparam=0) at gbx_api.c:490
#10 0x00000000004237ae in GB_Raise (object=0x7588b0, event_id=1, nparam=0)
at gbx_api.c:594
#11 0x00007ffff5d166de in CSocket_post_data_available (_object=0x7588b0) at
CSocket.c:107
#12 0x0000000000414446 in EVENT_check_post () at gbx_event.c:227
#13 0x000000000042b04d in do_loop (wait=0x0) at gbx_watch.c:509
#14 0x000000000042b0a6 in WATCH_loop () at gbx_watch.c:531
#15 0x000000000042ca21 in main (argc=1, argv=0x7fffffffe3b8) at gbx.c:352
(gdb)

PUBLIC SUB CUL_Read()

  DIM bData AS Byte

  TRY READ #hCUL, bData <-------------------- CCUL.CUL_Read.227

  IF ERROR THEN Main.WriteDebugLog(("[CUL] Error reading data from the TCP
port! -> ") & Error.Text)
  ProcessReceivedChar(bData)

END

(gdb) l gb_error.c:325
320
321 case EEXIST:
322 THROW(E_EXIST, path);
323
324 default:
325 THROW(E_SYSTEM, strerror(err));
326 }
327 }
328
329 void ERROR_panic(const char *error, ...)
(gdb)

(gdb) l gbx_stream.c:213
208      case EAGAIN:
209        THROW(E_EOF);
210      case EIO:
211        THROW(E_READ);
212      default:
213        THROW_SYSTEM(errno, NULL);
214    }
215  }
216 }
217
(gdb)

If i'm not mistaken error 104 is connection reset by peer.
I noticed in the GUI version of my software it often didn't see a lost
connection, ie it just continues without displaying the error.
But with a lost connection.
ie in this case CUL_Closed() wasn't always called, even if you pulled the
network cable from the device where the TCP socket was connected too.
But maybe this bug is not error code specific and was there on other error
numbers too, don't know.

If you need any more info let me know.

Regards,
Ron_2nd.

2011/10/8 Benoît Minisini <gambas at ...1...>

> > Nice,
> >
> > The new revision runs in gdb again, the breakpoint() macro isn't needed
> > anymore, correct?
>
> Not at the moment, as you should see the real error now.
>
> --
> Benoît Minisini
>
>
> ------------------------------------------------------------------------------
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