help debugging

Josef Frydl <[email protected]>
Newsgroups gmane.comp.ai.prolog.swi
Message-ID <[email protected]>
I have installed stable version 6.6

and need to debug web server 
tspy on any predicate gives me this error
[debug]  ?- 
SWI-Prolog [thread 1]: received fatal signal 10 (bus)
Stack trace labeled "crash":
  [0] 0   libswipl.dylib                      0x000be312 save_backtrace + 82
  [1] 1   libswipl.dylib                      0x000be39f crashHandler + 79
  [2] 2   libswipl.dylib                      0x00070043 dispatch_signal + 947
  [3] 3   libSystem.B.dylib                   0x9020505b _sigtramp + 43
  [4] 4   ???                                 0xffffffff 0x0 + 4294967295
  [5] 5   libfreetype.6.dylib                 0x01c32a09 load_truetype_glyph + 1109
  [6] 6   libfreetype.6.dylib                 0x01c338f8 tt_glyph_load + 631
  [7] 7   libfreetype.6.dylib                 0x01c20232 FT_Load_Glyph + 594
  [8] 8   libfontconfig.1.dylib               0x007c1235 FcFreeTypeCheckGlyph + 62
  [9] 9   libfontconfig.1.dylib               0x007c1601 FcFreeTypeCharSetAndSpacingForSize + 877
  [10] 10  libfontconfig.1.dylib               0x007c3f03 FcFreeTypeQueryFace + 6955
  [11] 11  libfontconfig.1.dylib               0x007c44e5 FcFreeTypeQuery + 101
  [12] 12  libfontconfig.1.dylib               0x007bef8c FcFileScanConfig + 233
  [13] 13  libfontconfig.1.dylib               0x007bf1ca FcDirScanConfig + 396
  [14] 14  libfontconfig.1.dylib               0x007bf2ad FcDirCacheScan + 169
  [15] 15  libfontconfig.1.dylib               0x007ba59e FcConfigAddDirList + 94
  [16] 16  libfontconfig.1.dylib               0x007ba647 FcConfigBuildFonts + 80
  [17] 17  libfontconfig.1.dylib               0x007c52f1 FcInitLoadOwnConfigAndFonts + 32
  [18] 18  libfontconfig.1.dylib               0x007c5319 FcInitLoadConfigAndFonts + 18
  [19] 19  libfontconfig.1.dylib               0x007ba0b2 FcConfigEnsure + 41
  [20] 20  libfontconfig.1.dylib               0x007ba15d FcConfigInit + 11
  [21] 21  libXft.2.dylib                      0x007ab48f XftInit + 63
  [22] 22  libXft.2.dylib                      0x007a7b21 XftFontMatch + 33
  [23] 23  pl2xpce.dylib                       0x01a137ad ws_create_font + 365
  [24] 24  pl2xpce.dylib                       0x0192dba4 XopenFont + 52
  [25] 25  pl2xpce.dylib                       0x01969579 pceExecuteGoal + 2297
  [26] 26  pl2xpce.dylib                       0x0196ac78 vm_send + 280
  [27] 27  pl2xpce.dylib                       0x0196ad50 sendPCE + 160
  [28] 28  pl2xpce.dylib                       0x0197fe2d getXrefObject + 157
  [29] 29  pl2xpce.dylib                       0x01a115a0 s_font + 64
  [30] 30  pl2xpce.dylib                       0x01a11a05 c_width + 21
  [31] 31  pl2xpce.dylib                       0x0192d310 getExFont + 64
  [32] 32  pl2xpce.dylib                       0x0198b7b0 computeMenu + 1664
  [33] 33  pl2xpce.dylib                       0x0192fcc7 ComputeGraphical + 103
  [34] 34  pl2xpce.dylib                       0x01986d0a getSelectionMenu + 26
  [35] 35  pl2xpce.dylib                       0x019695a7 pceExecuteGoal + 2343
  [36] 36  pl2xpce.dylib                       0x0196a852 vm_get + 226
  [37] 37  pl2xpce.dylib                       0x0196a910 getPCE + 160
  [38] 38  pl2xpce.dylib                       0x01987e22 multipleSelectionMenu + 82
  [39] 39  pl2xpce.dylib                       0x01969579 pceExecuteGoal + 2297
  [40] 40  pl2xpce.dylib                       0x01906191 invoke + 3041
  [41] 41  libswipl.dylib                      0x0001d9e6 PL_next_solution + 33478
  [42] 42  libswipl.dylib                      0x0002153c PL_call_predicate + 60
  [43] 43  pl2xpce.dylib                       0x019063e3 invoke + 3635
  [44] 44  libswipl.dylib                      0x0001d9e6 PL_next_solution + 33478
  [45] 45  libswipl.dylib                      0x0002153c PL_call_predicate + 60
  [46] 46  pl2xpce.dylib                       0x01905114 PrologCall + 484
  [47] 47  pl2xpce.dylib                       0x01969392 pceExecuteGoal + 1810
  [48] 48  pl2xpce.dylib                       0x0196a68b sendSendMethod + 363
  [49] 49  pl2xpce.dylib                       0x01970835 createObjectv + 533
  [50] 50  pl2xpce.dylib                       0x01957907 pceNew + 39
  [51] 51  pl2xpce.dylib                       0x01904a3e termToObject + 1150
  [52] 52  pl2xpce.dylib                       0x0190557c do_new + 268
  [53] 53  pl2xpce.dylib                       0x01904977 termToObject + 951
  [54] 54  pl2xpce.dylib                       0x01905646 invoke + 150
  [55] 55  libswipl.dylib                      0x0001d9e6 PL_next_solution + 33478
  [56] 56  pl2xpce.dylib                       0x01906b6a on_input + 330
  [57] 57  libXt.6.dylib                       0x00751d89 XtAppProcessEvent + 599
  [58] 58  pl2xpce.dylib                       0x01a1334c ws_dispatch + 316
  [59] 59  pl2xpce.dylib                       0x019f38fc dispatch_events + 60
  [60] 60  pl2xpce.dylib                       0x01957753 pceDispatch + 51
  [61] 61  pl2xpce.dylib                       0x01901db9 pce_dispatch + 25
  [62] 62  libswipl.dylib                      0x0000abe1 PL_dispatch + 97
  [63] 63  libswipl.dylib                      0x000c1f54 event_hook + 100
  [64] 64  libreadline.6.2.dylib               0x001d63ac rl_read_key + 604
  [65] 65  libreadline.6.2.dylib               0x001bf862 readline_internal_char + 98
  [66] 66  libreadline.6.2.dylib               0x001bfc95 readline + 101
  [67] 67  libswipl.dylib                      0x000c1ba6 pl_readline + 22
  [68] 68  libswipl.dylib                      0x000c1d90 Sread_readline + 464
  [69] 69  libswipl.dylib                      0x000ae91a S__fillbuf + 154
  [70] 70  libswipl.dylib                      0x000b0b90 Sgetcode + 976
  [71] 71  libswipl.dylib                      0x00065691 raw_read2 + 241
  [72] 72  libswipl.dylib                      0x00066c2d raw_read + 125
  [73] 73  libswipl.dylib                      0x00066d22 pl_raw_read2 + 162
  [74] 74  libswipl.dylib                      0x0001d9e6 PL_next_solution + 33478
  [75] 75  libswipl.dylib                      0x00055d06 query_loop + 294
  [76] 76  libswipl.dylib                      0x00055e8e prologToplevel + 78
  [77] 77  libswipl.dylib                      0x0000b24d PL_toplevel + 45
  [78] 78  swipl                               0x00001f05 main + 69
  [79] 79  swipl                               0x00001eb5 start + 53
Abort trap
Macintosh:~ joseffrydl$ 


I did not do any changes to OS (Snow Leopard 10.6.8), freshly reinstal
Welcome to SWI-Prolog (Multi-threaded, 32 bits, Version 6.6.0)
Copyright (c) 1990-2013 University of Amsterdam, VU Amsterdam
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit http://www.swi-prolog.org for details.

For help, use ?- help(Topic). or ?- apropos(Word).

?- 
Is there some other way to debug server. It does not die in my code. But error is in my code
Thanks Josef Frydl
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