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Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly. 

Patch by Serhiy Storchaka.
This commit is contained in:
Antoine Pitrou 2012-08-15 23:16:51 +02:00
parent 4ffe9a0640
commit c5bef75c77
11 changed files with 112 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Misc/NEWS
View File

@ -9,6 +9,9 @@ What's New in Python 2.7.4
Core and Builtins
-----------------
- Issue #15604: Update uses of PyObject_IsTrue() to check for and handle
errors correctly. Patch by Serhiy Storchaka.
- Issue #15041: Update "see also" list in tkinter documentation.
- Issue #14579: Fix error handling bug in the utf-16 decoder. Patch by

8
Modules/_csv.c
View File

@ -208,8 +208,12 @@ _set_bool(const char *name, int *target, PyObject *src, int dflt)
{
if (src == NULL)
*target = dflt;
else
*target = PyObject_IsTrue(src);
else {
int b = PyObject_IsTrue(src);
if (b < 0)
return -1;
*target = b;
}
return 0;
}

5
Modules/_io/textio.c
View File

@ -1013,8 +1013,11 @@ textiowrapper_init(textio *self, PyObject *args, PyObject *kwds)
res = PyObject_CallMethod(buffer, "seekable", NULL);
if (res == NULL)
goto error;
self->seekable = self->telling = PyObject_IsTrue(res);
r = PyObject_IsTrue(res);
Py_DECREF(res);
if (r < 0)
goto error;
self->seekable = self->telling = r;
self->encoding_start_of_stream = 0;
if (self->seekable && self->encoder) {

6
Modules/_ssl.c
View File

@ -1005,6 +1005,7 @@ PySSL_peercert(PySSLObject *self, PyObject *args)
int len;
int verification;
PyObject *binary_mode = Py_None;
int b;
if (!PyArg_ParseTuple(args, "|O:peer_certificate", &binary_mode))
return NULL;
@ -1012,7 +1013,10 @@ PySSL_peercert(PySSLObject *self, PyObject *args)
if (!self->peer_cert)
Py_RETURN_NONE;
if (PyObject_IsTrue(binary_mode)) {
b = PyObject_IsTrue(binary_mode);
if (b < 0)
return NULL;
if (b) {
/* return cert in DER-encoded format */
unsigned char *bytes_buf = NULL;

6
Modules/cStringIO.c
View File

@ -127,12 +127,16 @@ IO_cgetval(PyObject *self) {
static PyObject *
IO_getval(IOobject *self, PyObject *args) {
PyObject *use_pos=Py_None;
int b;
Py_ssize_t s;
if (!IO__opencheck(self)) return NULL;
if (!PyArg_UnpackTuple(args,"getval", 0, 1,&use_pos)) return NULL;
if (PyObject_IsTrue(use_pos)) {
b = PyObject_IsTrue(use_pos);
if (b < 0)
return NULL;
if (b) {
s=self->pos;
if (s > self->string_size) s=self->string_size;
}

17
Modules/itertoolsmodule.c
View File

@ -903,11 +903,13 @@ dropwhile_next(dropwhileobject *lz)
}
ok = PyObject_IsTrue(good);
Py_DECREF(good);
if (!ok) {
if (ok == 0) {
lz->start = 1;
return item;
}
Py_DECREF(item);
if (ok < 0)
return NULL;
}
}
@ -1043,10 +1045,11 @@ takewhile_next(takewhileobject *lz)
}
ok = PyObject_IsTrue(good);
Py_DECREF(good);
if (ok)
if (ok > 0)
return item;
Py_DECREF(item);
lz->stop = 1;
if (ok == 0)
lz->stop = 1;
return NULL;
}
@ -3001,9 +3004,11 @@ ifilter_next(ifilterobject *lz)
ok = PyObject_IsTrue(good);
Py_DECREF(good);
}
if (ok)
if (ok > 0)
return item;
Py_DECREF(item);
if (ok < 0)
return NULL;
}
}
@ -3144,9 +3149,11 @@ ifilterfalse_next(ifilterfalseobject *lz)
ok = PyObject_IsTrue(good);
Py_DECREF(good);
}
if (!ok)
if (ok == 0)
return item;
Py_DECREF(item);
if (ok < 0)
return NULL;
}
}

18
Modules/parsermodule.c
View File

@ -350,10 +350,14 @@ parser_st2tuple(PyST_Object *self, PyObject *args, PyObject *kw)
int lineno = 0;
int col_offset = 0;
if (line_option != NULL) {
lineno = (PyObject_IsTrue(line_option) != 0) ? 1 : 0;
lineno = PyObject_IsTrue(line_option);
if (lineno < 0)
return NULL;
}
if (col_option != NULL) {
col_offset = (PyObject_IsTrue(col_option) != 0) ? 1 : 0;
col_offset = PyObject_IsTrue(col_option);
if (col_offset < 0)
return NULL;
}
/*
* Convert ST into a tuple representation. Use Guido's function,
@ -401,10 +405,14 @@ parser_st2list(PyST_Object *self, PyObject *args, PyObject *kw)
int lineno = 0;
int col_offset = 0;
if (line_option != 0) {
lineno = PyObject_IsTrue(line_option) ? 1 : 0;
lineno = PyObject_IsTrue(line_option);
if (lineno < 0)
return NULL;
}
if (col_option != NULL) {
col_offset = (PyObject_IsTrue(col_option) != 0) ? 1 : 0;
if (col_option != 0) {
col_offset = PyObject_IsTrue(col_option);
if (col_offset < 0)
return NULL;
}
/*
* Convert ST into a tuple representation. Use Guido's function,

54
Modules/pyexpat.c
View File

@ -1174,13 +1174,16 @@ static PyObject *
xmlparse_UseForeignDTD(xmlparseobject *self, PyObject *args)
{
PyObject *flagobj = NULL;
XML_Bool flag = XML_TRUE;
int flag = 1;
enum XML_Error rc;
if (!PyArg_UnpackTuple(args, "UseForeignDTD", 0, 1, &flagobj))
if (!PyArg_ParseTuple(args, "O:UseForeignDTD", &flagobj))
return NULL;
if (flagobj != NULL)
flag = PyObject_IsTrue(flagobj) ? XML_TRUE : XML_FALSE;
rc = XML_UseForeignDTD(self->itself, flag);
if (flagobj != NULL) {
flag = PyObject_IsTrue(flagobj);
if (flag < 0)
return NULL;
}
rc = XML_UseForeignDTD(self->itself, flag ? XML_TRUE : XML_FALSE);
if (rc != XML_ERROR_NONE) {
return set_error(self, rc);
}
@ -1549,7 +1552,10 @@ xmlparse_setattr(xmlparseobject *self, char *name, PyObject *v)
return -1;
}
if (strcmp(name, "buffer_text") == 0) {
if (PyObject_IsTrue(v)) {
int b = PyObject_IsTrue(v);
if (b < 0)
return -1;
if (b) {
if (self->buffer == NULL) {
self->buffer = malloc(self->buffer_size);
if (self->buffer == NULL) {
@ -1568,39 +1574,39 @@ xmlparse_setattr(xmlparseobject *self, char *name, PyObject *v)
return 0;
}
if (strcmp(name, "namespace_prefixes") == 0) {
if (PyObject_IsTrue(v))
self->ns_prefixes = 1;
else
self->ns_prefixes = 0;
int b = PyObject_IsTrue(v);
if (b < 0)
return -1;
self->ns_prefixes = b;
XML_SetReturnNSTriplet(self->itself, self->ns_prefixes);
return 0;
}
if (strcmp(name, "ordered_attributes") == 0) {
if (PyObject_IsTrue(v))
self->ordered_attributes = 1;
else
self->ordered_attributes = 0;
int b = PyObject_IsTrue(v);
if (b < 0)
return -1;
self->ordered_attributes = b;
return 0;
}
if (strcmp(name, "returns_unicode") == 0) {
if (PyObject_IsTrue(v)) {
int b = PyObject_IsTrue(v);
if (b < 0)
return -1;
#ifndef Py_USING_UNICODE
if (b) {
PyErr_SetString(PyExc_ValueError,
"Unicode support not available");
return -1;
#else
self->returns_unicode = 1;
#endif
}
else
self->returns_unicode = 0;
#endif
self->returns_unicode = b;
return 0;
}
if (strcmp(name, "specified_attributes") == 0) {
if (PyObject_IsTrue(v))
self->specified_attributes = 1;
else
self->specified_attributes = 0;
int b = PyObject_IsTrue(v);
if (b < 0)
return -1;
self->specified_attributes = b;
return 0;
}

12
Objects/typeobject.c
View File

@ -327,11 +327,15 @@ type_set_abstractmethods(PyTypeObject *type, PyObject *value, void *context)
abc.ABCMeta.__new__, so this function doesn't do anything
special to update subclasses.
*/
int res;
int abstract, res;
if (value != NULL) {
abstract = PyObject_IsTrue(value);
if (abstract < 0)
return -1;
res = PyDict_SetItemString(type->tp_dict, "__abstractmethods__", value);
}
else {
abstract = 0;
res = PyDict_DelItemString(type->tp_dict, "__abstractmethods__");
if (res && PyErr_ExceptionMatches(PyExc_KeyError)) {
PyErr_SetString(PyExc_AttributeError, "__abstractmethods__");
@ -340,12 +344,10 @@ type_set_abstractmethods(PyTypeObject *type, PyObject *value, void *context)
}
if (res == 0) {
PyType_Modified(type);
if (value && PyObject_IsTrue(value)) {
if (abstract)
type->tp_flags |= Py_TPFLAGS_IS_ABSTRACT;
}
else {
else
type->tp_flags &= ~Py_TPFLAGS_IS_ABSTRACT;
}
}
return res;
}

22
Python/bltinmodule.c
View File

@ -313,7 +313,7 @@ builtin_filter(PyObject *self, PyObject *args)
ok = PyObject_IsTrue(good);
Py_DECREF(good);
}
if (ok) {
if (ok > 0) {
if (j < len)
PyList_SET_ITEM(result, j, item);
else {
@ -324,8 +324,11 @@ builtin_filter(PyObject *self, PyObject *args)
}
++j;
}
else
else {
Py_DECREF(item);
if (ok < 0)
goto Fail_result_it;
}
}
@ -2784,12 +2787,15 @@ filtertuple(PyObject *func, PyObject *tuple)
}
ok = PyObject_IsTrue(good);
Py_DECREF(good);
if (ok) {
if (ok > 0) {
if (PyTuple_SetItem(result, j++, item) < 0)
goto Fail_1;
}
else
else {
Py_DECREF(item);
if (ok < 0)
goto Fail_1;
}
}
if (_PyTuple_Resize(&result, j) < 0)
@ -2851,7 +2857,7 @@ filterstring(PyObject *func, PyObject *strobj)
ok = PyObject_IsTrue(good);
Py_DECREF(good);
}
if (ok) {
if (ok > 0) {
Py_ssize_t reslen;
if (!PyString_Check(item)) {
PyErr_SetString(PyExc_TypeError, "can't filter str to str:"
@ -2917,6 +2923,8 @@ filterstring(PyObject *func, PyObject *strobj)
}
}
Py_DECREF(item);
if (ok < 0)
goto Fail_1;
}
if (j < outlen)
@ -2977,7 +2985,7 @@ filterunicode(PyObject *func, PyObject *strobj)
ok = PyObject_IsTrue(good);
Py_DECREF(good);
}
if (ok) {
if (ok > 0) {
Py_ssize_t reslen;
if (!PyUnicode_Check(item)) {
PyErr_SetString(PyExc_TypeError,
@ -3032,6 +3040,8 @@ filterunicode(PyObject *func, PyObject *strobj)
}
}
Py_DECREF(item);
if (ok < 0)
goto Fail_1;
}
if (j < outlen)

13
Python/import.c
View File

@ -1043,7 +1043,10 @@ load_source_module(char *name, char *pathname, FILE *fp)
name, pathname);
if (cpathname) {
PyObject *ro = PySys_GetObject("dont_write_bytecode");
if (ro == NULL || !PyObject_IsTrue(ro))
int b = (ro == NULL) ? 0 : PyObject_IsTrue(ro);
if (b < 0)
goto error_exit;
if (!b)
write_compiled_module(co, cpathname, &st);
}
}
@ -2200,7 +2203,13 @@ import_module_level(char *name, PyObject *globals, PyObject *locals,
}
if (fromlist != NULL) {
if (fromlist == Py_None || !PyObject_IsTrue(fromlist))
int b = (fromlist == Py_None) ? 0 : PyObject_IsTrue(fromlist);
if (b < 0) {
Py_DECREF(tail);
Py_DECREF(head);
goto error_exit;
}
if (!b)
fromlist = NULL;
}