Remove memory leaks of strings/Unicode objects passed into the character
data and default handlers -- a new reference was being passed to Py_BuildValue() for the "O" format character; using "N" plugs the leak. Fixed two other (minor) leaks that occurred on various error conditions. Removed uses of the UNLESS macro, which makes code hard to read, and is Evil.
This commit is contained in:
Fred Drake
parent
07cbc4e5bd
commit
ca1f426080
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@ -93,7 +93,7 @@ conv_atts_using_string(XML_Char **atts)
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static PyObject *
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conv_atts_using_unicode(XML_Char **atts)
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{
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PyObject *attrs_obj = NULL;
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PyObject *attrs_obj;
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XML_Char **attrs_p, **attrs_k = NULL;
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int attrs_len;
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@ -121,6 +121,8 @@ conv_atts_using_unicode(XML_Char **atts)
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}
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if (PyDict_SetItem(attrs_obj, attr_str, value_str) < 0) {
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Py_DECREF(attrs_obj);
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Py_DECREF(attr_str);
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Py_DECREF(value_str);
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attrs_obj = NULL;
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goto finally;
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}
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@ -275,11 +277,11 @@ VOID_HANDLER(ProcessingInstruction,
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#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
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VOID_HANDLER(CharacterData,
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(void *userData, const XML_Char *data, int len),
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("(O)", conv_string_len_to_utf8(data,len)))
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("(N)", conv_string_len_to_utf8(data,len)))
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#else
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VOID_HANDLER(CharacterData,
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(void *userData, const XML_Char *data, int len),
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("(O)", (self->returns_unicode
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("(N)", (self->returns_unicode
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? conv_string_len_to_unicode(data,len)
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: conv_string_len_to_utf8(data,len))))
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#endif
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@ -332,21 +334,21 @@ VOID_HANDLER(EndCdataSection,
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#if PY_MAJOR_VERSION == 1 && PY_MINOR_VERSION < 6
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VOID_HANDLER(Default,
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(void *userData, const XML_Char *s, int len),
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("(O)", conv_string_len_to_utf8(s,len)))
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("(N)", conv_string_len_to_utf8(s,len)))
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VOID_HANDLER(DefaultHandlerExpand,
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(void *userData, const XML_Char *s, int len),
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("(O)", conv_string_len_to_utf8(s,len)))
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("(N)", conv_string_len_to_utf8(s,len)))
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#else
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VOID_HANDLER(Default,
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(void *userData, const XML_Char *s, int len),
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("(O)", (self->returns_unicode
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("(N)", (self->returns_unicode
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? conv_string_len_to_unicode(s,len)
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: conv_string_len_to_utf8(s,len))))
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VOID_HANDLER(DefaultHandlerExpand,
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(void *userData, const XML_Char *s, int len),
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("(O)", (self->returns_unicode
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("(N)", (self->returns_unicode
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? conv_string_len_to_unicode(s,len)
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: conv_string_len_to_utf8(s,len))))
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#endif
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@ -370,49 +372,6 @@ RC_HANDLER(int, ExternalEntityRef,
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/* File reading copied from cPickle */
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#define UNLESS(E) if (!(E))
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/*
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static int
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read_other(xmlparseobject *self, char **s, int n) {
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PyObject *bytes=NULL, *str=NULL, *arg=NULL;
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int res = -1;
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UNLESS(bytes = PyInt_FromLong(n)) {
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if (!PyErr_Occurred())
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PyErr_SetNone(PyExc_EOFError);
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goto finally;
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}
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UNLESS(arg)
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UNLESS(arg = PyTuple_New(1))
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goto finally;
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Py_INCREF(bytes);
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if (PyTuple_SetItem(arg, 0, bytes) < 0)
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goto finally;
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UNLESS(str = PyObject_CallObject(self->read, arg))
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goto finally;
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*s = PyString_AsString(str);
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res = n;
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finally:
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Py_XDECREF(arg);
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Py_XDECREF(bytes);
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return res;
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}
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*/
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/* ---------------------------------------------------------------- */
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static char xmlparse_Parse__doc__[] =
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@ -443,6 +402,8 @@ xmlparse_Parse(xmlparseobject *self, PyObject *args)
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return PyInt_FromLong(rv);
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}
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/* File reading copied from cPickle */
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#define BUF_SIZE 2048
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static int
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@ -453,23 +414,24 @@ readinst(char *buf, int buf_size, PyObject *meth)
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PyObject *str = NULL;
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int len = -1;
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UNLESS(bytes = PyInt_FromLong(buf_size)) {
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fprintf(stderr, "calling readinst()\n");
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if ((bytes = PyInt_FromLong(buf_size)) == NULL) {
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if (!PyErr_Occurred())
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PyErr_SetNone(PyExc_EOFError);
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goto finally;
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}
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UNLESS(arg)
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UNLESS(arg = PyTuple_New(1))
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if ((arg = PyTuple_New(1)) == NULL)
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goto finally;
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if (PyTuple_SetItem(arg, 0, bytes) < 0)
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if (PyTuple_SET_ITEM(arg, 0, bytes) < 0)
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goto finally;
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UNLESS(str = PyObject_CallObject(meth, arg))
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if ((str = PyObject_CallObject(meth, arg)) == NULL)
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goto finally;
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/* XXX what to do if it returns a Unicode string? */
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UNLESS(PyString_Check(str)) {
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if (!PyString_Check(str)) {
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PyErr_Format(PyExc_TypeError,
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"read() did not return a string object (type=%.400s)",
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str->ob_type->tp_name);
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@ -485,9 +447,9 @@ readinst(char *buf, int buf_size, PyObject *meth)
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goto finally;
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}
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memcpy(buf, PyString_AsString(str), len);
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Py_XDECREF(str);
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finally:
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Py_XDECREF(arg);
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Py_XDECREF(str);
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return len;
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}
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@ -511,7 +473,8 @@ xmlparse_ParseFile(xmlparseobject *self, PyObject *args)
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}
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else{
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fp = NULL;
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UNLESS(readmethod = PyObject_GetAttrString(f, "read")) {
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readmethod = PyObject_GetAttrString(f, "read");
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if (readmethod == NULL) {
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PyErr_Clear();
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PyErr_SetString(PyExc_TypeError,
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"argument must have 'read' attribute");
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