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Check for PyUnicode_CopyCharacters() failure

This commit is contained in:
Victor Stinner 2011-09-28 21:39:17 +02:00
parent be78eaf2de
commit 6c7a52a46f
2 changed files with 87 additions and 43 deletions
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120
Objects/unicodeobject.c
View File

@ -1784,9 +1784,10 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
(void) va_arg(vargs, char *);
size = PyUnicode_GET_LENGTH(*callresult);
assert(PyUnicode_KIND(*callresult) <= PyUnicode_KIND(string));
PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult, 0,
size);
if (PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult, 0,
size) < 0)
goto fail;
i += size;
/* We're done with the unicode()/repr() => forget it */
Py_DECREF(*callresult);
@ -1800,9 +1801,10 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
Py_ssize_t size;
assert(PyUnicode_KIND(obj) <= PyUnicode_KIND(string));
size = PyUnicode_GET_LENGTH(obj);
PyUnicode_CopyCharacters((PyObject*)string, i,
obj, 0,
size);
if (PyUnicode_CopyCharacters((PyObject*)string, i,
obj, 0,
size) < 0)
goto fail;
i += size;
break;
}
@ -1814,17 +1816,19 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
if (obj) {
size = PyUnicode_GET_LENGTH(obj);
assert(PyUnicode_KIND(obj) <= PyUnicode_KIND(string));
PyUnicode_CopyCharacters((PyObject*)string, i,
obj, 0,
size);
if (PyUnicode_CopyCharacters((PyObject*)string, i,
obj, 0,
size) < 0)
goto fail;
i += size;
} else {
size = PyUnicode_GET_LENGTH(*callresult);
assert(PyUnicode_KIND(*callresult) <=
PyUnicode_KIND(string));
PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult,
0, size);
if (PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult,
0, size) < 0)
goto fail;
i += size;
Py_DECREF(*callresult);
}
@ -1838,9 +1842,10 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
/* unused, since we already have the result */
(void) va_arg(vargs, PyObject *);
assert(PyUnicode_KIND(*callresult) <= PyUnicode_KIND(string));
PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult, 0,
PyUnicode_GET_LENGTH(*callresult));
if (PyUnicode_CopyCharacters((PyObject*)string, i,
*callresult, 0,
PyUnicode_GET_LENGTH(*callresult)) < 0)
goto fail;
i += PyUnicode_GET_LENGTH(*callresult);
/* We're done with the unicode()/repr() => forget it */
Py_DECREF(*callresult);
@ -8141,8 +8146,7 @@ fixup(PyUnicodeObject *self,
else {
/* In case the maximum character changed, we need to
convert the string to the new category. */
PyObject *v = PyUnicode_New(
PyUnicode_GET_LENGTH(self), maxchar_new);
PyObject *v = PyUnicode_New(PyUnicode_GET_LENGTH(self), maxchar_new);
if (v == NULL) {
Py_DECREF(u);
return NULL;
@ -8151,12 +8155,25 @@ fixup(PyUnicodeObject *self,
/* If the maxchar increased so that the kind changed, not all
characters are representable anymore and we need to fix the
string again. This only happens in very few cases. */
PyUnicode_CopyCharacters(v, 0, (PyObject*)self, 0, PyUnicode_GET_LENGTH(self));
if (PyUnicode_CopyCharacters(v, 0,
(PyObject*)self, 0,
PyUnicode_GET_LENGTH(self)) < 0)
{
Py_DECREF(u);
return NULL;
}
maxchar_old = fixfct((PyUnicodeObject*)v);
assert(maxchar_old > 0 && maxchar_old <= maxchar_new);
}
else
PyUnicode_CopyCharacters(v, 0, u, 0, PyUnicode_GET_LENGTH(self));
else {
if (PyUnicode_CopyCharacters(v, 0,
u, 0,
PyUnicode_GET_LENGTH(self)) < 0)
{
Py_DECREF(u);
return NULL;
}
}
Py_DECREF(u);
return v;
@ -8455,12 +8472,14 @@ PyUnicode_Join(PyObject *separator, PyObject *seq)
itemlen = PyUnicode_GET_LENGTH(item);
/* Copy item, and maybe the separator. */
if (i) {
PyUnicode_CopyCharacters(res, res_offset,
sep, 0, seplen);
if (PyUnicode_CopyCharacters(res, res_offset,
sep, 0, seplen) < 0)
goto onError;
res_offset += seplen;
}
PyUnicode_CopyCharacters(res, res_offset,
item, 0, itemlen);
if (PyUnicode_CopyCharacters(res, res_offset,
item, 0, itemlen) < 0)
goto onError;
res_offset += itemlen;
}
assert(res_offset == PyUnicode_GET_LENGTH(res));
@ -8508,6 +8527,8 @@ pad(PyUnicodeObject *self,
{
PyObject *u;
Py_UCS4 maxchar;
int kind;
void *data;
if (left < 0)
left = 0;
@ -8528,14 +8549,21 @@ pad(PyUnicodeObject *self,
if (fill > maxchar)
maxchar = fill;
u = PyUnicode_New(left + _PyUnicode_LENGTH(self) + right, maxchar);
if (u) {
int kind = PyUnicode_KIND(u);
void *data = PyUnicode_DATA(u);
if (left)
FILL(kind, data, fill, 0, left);
if (right)
FILL(kind, data, fill, left + _PyUnicode_LENGTH(self), right);
PyUnicode_CopyCharacters(u, left, (PyObject*)self, 0, _PyUnicode_LENGTH(self));
if (!u)
return NULL;
kind = PyUnicode_KIND(u);
data = PyUnicode_DATA(u);
if (left)
FILL(kind, data, fill, 0, left);
if (right)
FILL(kind, data, fill, left + _PyUnicode_LENGTH(self), right);
if (PyUnicode_CopyCharacters(u, left,
(PyObject*)self, 0,
_PyUnicode_LENGTH(self)) < 0)
{
Py_DECREF(u);
return NULL;
}
return (PyUnicodeObject*)u;
@ -8821,8 +8849,12 @@ replace(PyObject *self, PyObject *str1,
u = PyUnicode_New(slen, maxchar);
if (!u)
goto error;
PyUnicode_CopyCharacters(u, 0,
(PyObject*)self, 0, slen);
if (PyUnicode_CopyCharacters(u, 0,
(PyObject*)self, 0, slen) < 0)
{
Py_DECREF(u);
return NULL;
}
rkind = PyUnicode_KIND(u);
for (i = 0; i < PyUnicode_GET_LENGTH(u); i++)
if (PyUnicode_READ(rkind, PyUnicode_DATA(u), i) == u1) {
@ -9437,8 +9469,7 @@ PyUnicode_Concat(PyObject *left, PyObject *right)
goto onError;
maxchar = PyUnicode_MAX_CHAR_VALUE(u);
if (PyUnicode_MAX_CHAR_VALUE(v) > maxchar)
maxchar = PyUnicode_MAX_CHAR_VALUE(v);
maxchar = PY_MAX(maxchar, PyUnicode_MAX_CHAR_VALUE(v));
/* Concat the two Unicode strings */
w = PyUnicode_New(
@ -9446,9 +9477,12 @@ PyUnicode_Concat(PyObject *left, PyObject *right)
maxchar);
if (w == NULL)
goto onError;
PyUnicode_CopyCharacters(w, 0, u, 0, PyUnicode_GET_LENGTH(u));
PyUnicode_CopyCharacters(w, PyUnicode_GET_LENGTH(u), v, 0,
PyUnicode_GET_LENGTH(v));
if (PyUnicode_CopyCharacters(w, 0, u, 0, PyUnicode_GET_LENGTH(u)) < 0)
goto onError;
if (PyUnicode_CopyCharacters(w, PyUnicode_GET_LENGTH(u),
v, 0,
PyUnicode_GET_LENGTH(v)) < 0)
goto onError;
Py_DECREF(u);
Py_DECREF(v);
return w;
@ -10396,8 +10430,12 @@ substring(PyUnicodeObject *self, Py_ssize_t start, Py_ssize_t len)
unicode = PyUnicode_New(len, maxchar);
if (unicode == NULL)
return NULL;
PyUnicode_CopyCharacters(unicode, 0,
(PyObject*)self, start, len);
if (PyUnicode_CopyCharacters(unicode, 0,
(PyObject*)self, start, len) < 0)
{
Py_DECREF(unicode);
return NULL;
}
return unicode;
}

10
Python/compile.c
View File

@ -245,8 +245,14 @@ _Py_Mangle(PyObject *privateobj, PyObject *ident)
return 0;
/* ident = "_" + priv[ipriv:] + ident # i.e. 1+plen+nlen bytes */
PyUnicode_WRITE(PyUnicode_KIND(result), PyUnicode_DATA(result), 0, '_');
PyUnicode_CopyCharacters(result, 1, privateobj, ipriv, plen);
PyUnicode_CopyCharacters(result, plen+1, ident, 0, nlen);
if (PyUnicode_CopyCharacters(result, 1, privateobj, ipriv, plen) < 0) {
Py_DECREF(result);
return NULL;
}
if (PyUnicode_CopyCharacters(result, plen+1, ident, 0, nlen) < 0) {
Py_DECREF(result);
return NULL;
}
return result;
}