annotate Python/traceback.c @ 43292:876b7ef4775d

Merged revisions 57778-58052 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r57820 | georg.brandl | 2007-08-31 08:59:27 +0200 (Fri, 31 Aug 2007) | 2 lines Document new shorthand notation for index entries. ........ r57827 | georg.brandl | 2007-08-31 10:47:51 +0200 (Fri, 31 Aug 2007) | 2 lines Fix subitem markup. ........ r57833 | martin.v.loewis | 2007-08-31 12:01:07 +0200 (Fri, 31 Aug 2007) | 1 line Mark registry components as 64-bit on Win64. ........ r57854 | bill.janssen | 2007-08-31 21:02:23 +0200 (Fri, 31 Aug 2007) | 1 line deprecate use of FakeSocket ........ r57855 | bill.janssen | 2007-08-31 21:02:46 +0200 (Fri, 31 Aug 2007) | 1 line remove mentions of socket.ssl in comments ........ r57856 | bill.janssen | 2007-08-31 21:03:31 +0200 (Fri, 31 Aug 2007) | 1 line remove use of non-existent SSLFakeSocket in apparently untested code ........ r57859 | martin.v.loewis | 2007-09-01 08:36:03 +0200 (Sat, 01 Sep 2007) | 3 lines Bug #1737210: Change Manufacturer of Windows installer to PSF. Will backport to 2.5. ........ r57865 | georg.brandl | 2007-09-01 09:51:24 +0200 (Sat, 01 Sep 2007) | 2 lines Fix RST link (backport from Py3k). ........ r57876 | georg.brandl | 2007-09-01 17:49:49 +0200 (Sat, 01 Sep 2007) | 2 lines Document sets' ">" and "<" operations (backport from py3k). ........ r57878 | skip.montanaro | 2007-09-01 19:40:03 +0200 (Sat, 01 Sep 2007) | 4 lines Added a note and examples to explain that re.split does not split on an empty pattern match. (issue 852532). ........ r57879 | walter.doerwald | 2007-09-01 20:18:09 +0200 (Sat, 01 Sep 2007) | 2 lines Fix wrong function names. ........ r57880 | walter.doerwald | 2007-09-01 20:34:05 +0200 (Sat, 01 Sep 2007) | 2 lines Fix typo. ........ r57889 | andrew.kuchling | 2007-09-01 22:31:59 +0200 (Sat, 01 Sep 2007) | 1 line Markup fix ........ r57892 | andrew.kuchling | 2007-09-01 22:43:36 +0200 (Sat, 01 Sep 2007) | 1 line Add various items ........ r57895 | andrew.kuchling | 2007-09-01 23:17:58 +0200 (Sat, 01 Sep 2007) | 1 line Wording change ........ r57896 | andrew.kuchling | 2007-09-01 23:18:31 +0200 (Sat, 01 Sep 2007) | 1 line Add more items ........ r57904 | ronald.oussoren | 2007-09-02 11:46:07 +0200 (Sun, 02 Sep 2007) | 3 lines Macosx: this patch ensures that the value of MACOSX_DEPLOYMENT_TARGET used by the Makefile is also used at configure-time. ........ r57925 | georg.brandl | 2007-09-03 09:16:46 +0200 (Mon, 03 Sep 2007) | 2 lines Fix #883466: don't allow Unicode as arguments to quopri and uu codecs. ........ r57936 | matthias.klose | 2007-09-04 01:33:04 +0200 (Tue, 04 Sep 2007) | 2 lines - Added support for linking the bsddb module against BerkeleyDB 4.6.x. ........ r57954 | mark.summerfield | 2007-09-04 10:16:15 +0200 (Tue, 04 Sep 2007) | 3 lines Added cross-references plus a note about dict & list shallow copying. ........ r57958 | martin.v.loewis | 2007-09-04 11:51:57 +0200 (Tue, 04 Sep 2007) | 3 lines Document that we rely on the OS to release the crypto context. Fixes #1626801. ........ r57960 | martin.v.loewis | 2007-09-04 15:13:14 +0200 (Tue, 04 Sep 2007) | 3 lines Patch #1388440: Add set_completion_display_matches_hook and get_completion_type to readline. ........ r57961 | martin.v.loewis | 2007-09-04 16:19:28 +0200 (Tue, 04 Sep 2007) | 3 lines Patch #1031213: Decode source line in SyntaxErrors back to its original source encoding. Will backport to 2.5. ........ r57972 | matthias.klose | 2007-09-04 20:17:36 +0200 (Tue, 04 Sep 2007) | 3 lines - Makefile.pre.in(buildbottest): Run an optional script pybuildbot.identify to include some information about the build environment. ........ r57973 | matthias.klose | 2007-09-04 21:05:38 +0200 (Tue, 04 Sep 2007) | 2 lines - Makefile.pre.in(buildbottest): Remove whitespace at eol. ........ r57975 | matthias.klose | 2007-09-04 22:46:02 +0200 (Tue, 04 Sep 2007) | 2 lines - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*. ........ r57980 | bill.janssen | 2007-09-05 02:46:27 +0200 (Wed, 05 Sep 2007) | 1 line SSL certificate distinguished names should be represented by tuples ........ r57985 | martin.v.loewis | 2007-09-05 08:39:17 +0200 (Wed, 05 Sep 2007) | 3 lines Patch #1105: Explain that one needs to build the solution to get dependencies right. ........ r57987 | armin.rigo | 2007-09-05 09:51:21 +0200 (Wed, 05 Sep 2007) | 4 lines PyDict_GetItem() returns a borrowed reference. There are probably a number of places that are open to attacks such as the following one, in bltinmodule.c:min_max(). ........ r57991 | martin.v.loewis | 2007-09-05 13:47:34 +0200 (Wed, 05 Sep 2007) | 3 lines Patch #786737: Allow building in a tree of symlinks pointing to a readonly source. ........ r57993 | georg.brandl | 2007-09-05 15:36:44 +0200 (Wed, 05 Sep 2007) | 2 lines Backport from Py3k: Bug #1684991: explain lookup semantics for __special__ methods (new-style classes only). ........ r58004 | armin.rigo | 2007-09-06 10:30:51 +0200 (Thu, 06 Sep 2007) | 4 lines Patch #1733973 by peaker: ptrace_enter_call() assumes no exception is currently set. This assumption is broken when throwing into a generator. ........ r58006 | armin.rigo | 2007-09-06 11:30:38 +0200 (Thu, 06 Sep 2007) | 4 lines PyDict_GetItem() returns a borrowed reference. This attack is against ceval.c:IMPORT_NAME, which calls an object (__builtin__.__import__) without holding a reference to it. ........ r58013 | georg.brandl | 2007-09-06 16:49:56 +0200 (Thu, 06 Sep 2007) | 2 lines Backport from 3k: #1116: fix reference to old filename. ........ r58021 | thomas.heller | 2007-09-06 22:26:20 +0200 (Thu, 06 Sep 2007) | 1 line Fix typo: c_float represents to C float type. ........ r58022 | skip.montanaro | 2007-09-07 00:29:06 +0200 (Fri, 07 Sep 2007) | 3 lines If this is correct for py3k branch and it's already in the release25-maint branch, seems like it ought to be on the trunk as well. ........ r58023 | gregory.p.smith | 2007-09-07 00:59:59 +0200 (Fri, 07 Sep 2007) | 4 lines Apply the fix from Issue1112 to make this test more robust and keep windows happy. ........ r58031 | brett.cannon | 2007-09-07 05:17:50 +0200 (Fri, 07 Sep 2007) | 4 lines Make uuid1 and uuid4 tests conditional on whether ctypes can be imported; implementation of either function depends on ctypes but uuid as a whole does not. ........ r58032 | brett.cannon | 2007-09-07 06:18:30 +0200 (Fri, 07 Sep 2007) | 6 lines Fix a crasher where Python code managed to infinitely recurse in C code without ever going back out to Python code in PyObject_Call(). Required introducing a static RuntimeError instance so that normalizing an exception there is no reliance on a recursive call that would put the exception system over the recursion check itself. ........ r58034 | thomas.heller | 2007-09-07 08:32:17 +0200 (Fri, 07 Sep 2007) | 1 line Add a 'c_longdouble' type to the ctypes module. ........ r58035 | thomas.heller | 2007-09-07 11:30:40 +0200 (Fri, 07 Sep 2007) | 1 line Remove unneeded #include. ........ r58036 | thomas.heller | 2007-09-07 11:33:24 +0200 (Fri, 07 Sep 2007) | 6 lines Backport from py3k branch: Add a workaround for a strange bug on win64, when _ctypes is compiled with the SDK compiler. This should fix the failing Lib\ctypes\test\test_as_parameter.py test. ........ r58037 | georg.brandl | 2007-09-07 16:14:40 +0200 (Fri, 07 Sep 2007) | 2 lines Fix a wrong indentation for sublists. ........ r58043 | georg.brandl | 2007-09-07 22:10:49 +0200 (Fri, 07 Sep 2007) | 2 lines #1095: ln -f doesn't work portably, fix in Makefile. ........ r58049 | skip.montanaro | 2007-09-08 02:34:17 +0200 (Sat, 08 Sep 2007) | 1 line be explicit about the actual location of the missing file ........
author Thomas Wouters <thomas@python.org>
date Sat, 08 Sep 2007 17:39:28 +0000
parents 5391b5f8cd7a
children 19319e70fc3e
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1
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2 /* Traceback implementation */
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3
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4 #include "Python.h"
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6 #include "code.h"
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7 #include "frameobject.h"
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8 #include "structmember.h"
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9 #include "osdefs.h"
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10 #include "traceback.h"
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12 #define OFF(x) offsetof(PyTracebackObject, x)
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14 static PyObject *
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15 tb_dir(PyTracebackObject *self)
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16 {
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17 return Py_BuildValue("[ssss]", "tb_frame", "tb_next",
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18 "tb_lasti", "tb_lineno");
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19 }
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20
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21 static PyMethodDef tb_methods[] = {
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22 {"__dir__", (PyCFunction)tb_dir, METH_NOARGS},
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23 {NULL, NULL, 0, NULL},
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24 };
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26 static PyMemberDef tb_memberlist[] = {
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27 {"tb_next", T_OBJECT, OFF(tb_next), READONLY},
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28 {"tb_frame", T_OBJECT, OFF(tb_frame), READONLY},
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29 {"tb_lasti", T_INT, OFF(tb_lasti), READONLY},
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30 {"tb_lineno", T_INT, OFF(tb_lineno), READONLY},
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31 {NULL} /* Sentinel */
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32 };
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34 static void
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35 tb_dealloc(PyTracebackObject *tb)
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36 {
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37 PyObject_GC_UnTrack(tb);
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38 Py_TRASHCAN_SAFE_BEGIN(tb)
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39 Py_XDECREF(tb->tb_next);
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40 Py_XDECREF(tb->tb_frame);
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41 PyObject_GC_Del(tb);
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42 Py_TRASHCAN_SAFE_END(tb)
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45 static int
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46 tb_traverse(PyTracebackObject *tb, visitproc visit, void *arg)
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47 {
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48 Py_VISIT(tb->tb_next);
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49 Py_VISIT(tb->tb_frame);
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50 return 0;
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51 }
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53 static void
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54 tb_clear(PyTracebackObject *tb)
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55 {
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56 Py_CLEAR(tb->tb_next);
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57 Py_CLEAR(tb->tb_frame);
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58 }
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59
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60 PyTypeObject PyTraceBack_Type = {
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61 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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62 "traceback",
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63 sizeof(PyTracebackObject),
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64 0,
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65 (destructor)tb_dealloc, /*tp_dealloc*/
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66 0, /*tp_print*/
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67 0, /*tp_getattr*/
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68 0, /*tp_setattr*/
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69 0, /*tp_compare*/
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70 0, /*tp_repr*/
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71 0, /*tp_as_number*/
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72 0, /*tp_as_sequence*/
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73 0, /*tp_as_mapping*/
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74 0, /* tp_hash */
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75 0, /* tp_call */
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76 0, /* tp_str */
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77 PyObject_GenericGetAttr, /* tp_getattro */
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78 0, /* tp_setattro */
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79 0, /* tp_as_buffer */
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80 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
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81 0, /* tp_doc */
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82 (traverseproc)tb_traverse, /* tp_traverse */
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83 (inquiry)tb_clear, /* tp_clear */
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84 0, /* tp_richcompare */
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85 0, /* tp_weaklistoffset */
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86 0, /* tp_iter */
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87 0, /* tp_iternext */
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88 tb_methods, /* tp_methods */
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89 tb_memberlist, /* tp_members */
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90 0, /* tp_getset */
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91 0, /* tp_base */
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92 0, /* tp_dict */
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93 };
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94
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95 static PyTracebackObject *
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96 newtracebackobject(PyTracebackObject *next, PyFrameObject *frame)
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97 {
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98 PyTracebackObject *tb;
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99 if ((next != NULL && !PyTraceBack_Check(next)) ||
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100 frame == NULL || !PyFrame_Check(frame)) {
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101 PyErr_BadInternalCall();
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102 return NULL;
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103 }
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104 tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type);
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105 if (tb != NULL) {
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106 Py_XINCREF(next);
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107 tb->tb_next = next;
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108 Py_XINCREF(frame);
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109 tb->tb_frame = frame;
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110 tb->tb_lasti = frame->f_lasti;
cf5928fab108 This is my patch
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111 tb->tb_lineno = PyCode_Addr2Line(frame->f_code,
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112 frame->f_lasti);
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113 PyObject_GC_Track(tb);
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114 }
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115 return tb;
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116 }
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117
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118 int
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119 PyTraceBack_Here(PyFrameObject *frame)
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120 {
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121 PyThreadState *tstate = PyThreadState_GET();
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122 PyTracebackObject *oldtb = (PyTracebackObject *) tstate->curexc_traceback;
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123 PyTracebackObject *tb = newtracebackobject(oldtb, frame);
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124 if (tb == NULL)
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125 return -1;
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126 tstate->curexc_traceback = (PyObject *)tb;
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127 Py_XDECREF(oldtb);
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128 return 0;
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129 }
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130
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131 static int
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132 tb_displayline(PyObject *f, char *filename, int lineno, char *name)
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133 {
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134 int err = 0;
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135 FILE *xfp;
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136 char linebuf[2000];
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137 int i;
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138 if (filename == NULL || name == NULL)
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139 return -1;
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140 /* This is needed by Emacs' compile command */
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141 #define FMT " File \"%.500s\", line %d, in %.500s\n"
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142 xfp = fopen(filename, "r" PY_STDIOTEXTMODE);
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143 if (xfp == NULL) {
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144 /* Search tail of filename in sys.path before giving up */
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145 PyObject *path;
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146 char *tail = strrchr(filename, SEP);
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147 if (tail == NULL)
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148 tail = filename;
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149 else
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150 tail++;
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151 path = PySys_GetObject("path");
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152 if (path != NULL && PyList_Check(path)) {
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153 Py_ssize_t _npath = PyList_Size(path);
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154 int npath = Py_SAFE_DOWNCAST(_npath, Py_ssize_t, int);
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155 size_t taillen = strlen(tail);
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156 char namebuf[MAXPATHLEN+1];
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157 for (i = 0; i < npath; i++) {
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158 PyObject *v = PyList_GetItem(path, i);
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159 if (v == NULL) {
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160 PyErr_Clear();
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161 break;
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162 }
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163 if (PyString_Check(v)) {
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164 size_t len;
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Thomas Wouters <thomas@python.org>
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165 len = PyString_GET_SIZE(v);
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166 if (len + 1 + taillen >= MAXPATHLEN)
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167 continue; /* Too long */
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168 strcpy(namebuf, PyString_AsString(v));
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169 if (strlen(namebuf) != len)
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170 continue; /* v contains '\0' */
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171 if (len > 0 && namebuf[len-1] != SEP)
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172 namebuf[len++] = SEP;
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173 strcpy(namebuf+len, tail);
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174 xfp = fopen(namebuf, "r" PY_STDIOTEXTMODE);
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175 if (xfp != NULL) {
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176 filename = namebuf;
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177 break;
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178 }
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179 }
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180 }
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181 }
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182 }
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183 PyOS_snprintf(linebuf, sizeof(linebuf), FMT, filename, lineno, name);
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184 err = PyFile_WriteString(linebuf, f);
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185 if (xfp == NULL)
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186 return err;
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187 else if (err != 0) {
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188 fclose(xfp);
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189 return err;
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190 }
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191 for (i = 0; i < lineno; i++) {
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192 char* pLastChar = &linebuf[sizeof(linebuf)-2];
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193 do {
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194 *pLastChar = '\0';
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195 if (Py_UniversalNewlineFgets(linebuf, sizeof linebuf, xfp, NULL) == NULL)
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196 break;
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197 /* fgets read *something*; if it didn't get as
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198 far as pLastChar, it must have found a newline
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199 or hit the end of the file; if pLastChar is \n,
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200 it obviously found a newline; else we haven't
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201 yet seen a newline, so must continue */
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202 } while (*pLastChar != '\0' && *pLastChar != '\n');
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203 }
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204 if (i == lineno) {
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205 char *p = linebuf;
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206 while (*p == ' ' || *p == '\t' || *p == '\014')
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207 p++;
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208 err = PyFile_WriteString(" ", f);
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209 if (err == 0) {
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210 err = PyFile_WriteString(p, f);
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211 if (err == 0 && strchr(p, '\n') == NULL)
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212 err = PyFile_WriteString("\n", f);
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213 }
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214 }
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215 fclose(xfp);
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216 return err;
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217 }
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218
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219 static int
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220 tb_printinternal(PyTracebackObject *tb, PyObject *f, int limit)
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221 {
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222 int err = 0;
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223 int depth = 0;
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224 PyTracebackObject *tb1 = tb;
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225 while (tb1 != NULL) {
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226 depth++;
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227 tb1 = tb1->tb_next;
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228 }
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229 while (tb != NULL && err == 0) {
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Guido van Rossum <guido@python.org>
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230 if (depth <= limit) {
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231 err = tb_displayline(f,
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232 PyString_AsString(
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233 tb->tb_frame->f_code->co_filename),
1831
216b755515e6 add function name to traceback info
Guido van Rossum <guido@python.org>
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234 tb->tb_lineno,
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235 PyString_AsString(tb->tb_frame->f_code->co_name));
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236 }
1425
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237 depth--;
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238 tb = tb->tb_next;
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239 if (err == 0)
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240 err = PyErr_CheckSignals();
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241 }
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242 return err;
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243 }
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244
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245 int
13658
f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
parents: 13256
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246 PyTraceBack_Print(PyObject *v, PyObject *f)
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247 {
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248 int err;
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249 PyObject *limitv;
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250 int limit = 1000;
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251 if (v == NULL)
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252 return 0;
20618
57b51966a4f1 Removed two pointless and obfuscating macros.
Tim Peters <tim.peters@gmail.com>
parents: 14375
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253 if (!PyTraceBack_Check(v)) {
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254 PyErr_BadInternalCall();
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255 return -1;
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256 }
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257 limitv = PySys_GetObject("tracebacklimit");
40626
4aee3f672f77 Merged the int/long unification branch, by very crude means (sorry Thomas!).
Guido van Rossum <guido@python.org>
parents: 37879
diff changeset
258 if (limitv && PyInt_CheckExact(limitv)) {
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259 limit = PyInt_AsLong(limitv);
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Guido van Rossum <guido@python.org>
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260 if (limit <= 0)
72bddfad351a * mpzmodule.c: cast some methods to the proper type.
Guido van Rossum <guido@python.org>
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261 return 0;
72bddfad351a * mpzmodule.c: cast some methods to the proper type.
Guido van Rossum <guido@python.org>
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262 }
12137
5b5581af951c Change traceback error message to "most recent call last" from
Guido van Rossum <guido@python.org>
parents: 11999
diff changeset
263 err = PyFile_WriteString("Traceback (most recent call last):\n", f);
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Guido van Rossum <guido@python.org>
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264 if (!err)
31739
49ec0d8f08ec Moved tracebackobject to traceback.h, Closes SF Bug #497067
Nicholas Bastin <nick.bastin@gmail.com>
parents: 30968
diff changeset
265 err = tb_printinternal((PyTracebackObject *)v, f, limit);
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266 return err;
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267 }