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[3.6] bpo-31393: Fix the use of PyUnicode_READY(). (GH-3451). (#3453)

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(cherry picked from commit e3b2b4b8d9)
This commit is contained in:
Serhiy Storchaka 2017-09-08 10:43:54 +03:00 • committed by GitHub
parent 9f2b3d4c28
commit ddb536ba7b
5 changed files with 30 additions and 15 deletions
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5
Modules/socketmodule.c
View file

@ -1464,7 +1464,10 @@ idna_converter(PyObject *obj, struct maybe_idna *data)
len = PyByteArray_Size(obj);
}
else if (PyUnicode_Check(obj)) {
if (PyUnicode_READY(obj) == 0 && PyUnicode_IS_COMPACT_ASCII(obj)) {
if (PyUnicode_READY(obj) == -1) {
return 0;
}
if (PyUnicode_IS_COMPACT_ASCII(obj)) {
data->buf = PyUnicode_DATA(obj);
len = PyUnicode_GET_LENGTH(obj);
}

7
Objects/codeobject.c
View file

@ -22,8 +22,7 @@ all_name_chars(PyObject *o)
static const unsigned char *name_chars = (unsigned char *)NAME_CHARS;
const unsigned char *s, *e;
if (!PyUnicode_Check(o) || PyUnicode_READY(o) == -1 ||
!PyUnicode_IS_ASCII(o))
if (!PyUnicode_IS_ASCII(o))
return 0;
if (ok_name_char[*name_chars] == 0) {
@ -64,6 +63,10 @@ intern_string_constants(PyObject *tuple)
for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
PyObject *v = PyTuple_GET_ITEM(tuple, i);
if (PyUnicode_CheckExact(v)) {
if (PyUnicode_READY(v) == -1) {
PyErr_Clear();
continue;
}
if (all_name_chars(v)) {
PyObject *w = v;
PyUnicode_InternInPlace(&v);

2
Objects/typeobject.c
View file

@ -24,7 +24,7 @@
((PyASCIIObject *)(name))->hash)
#define MCACHE_CACHEABLE_NAME(name) \
PyUnicode_CheckExact(name) && \
PyUnicode_READY(name) != -1 && \
PyUnicode_IS_READY(name) && \
PyUnicode_GET_LENGTH(name) <= MCACHE_MAX_ATTR_SIZE
struct method_cache_entry {

10
Objects/unicodeobject.c
View file

@ -4210,10 +4210,13 @@ PyUnicode_ReadChar(PyObject *unicode, Py_ssize_t index)
void *data;
int kind;
if (!PyUnicode_Check(unicode) || PyUnicode_READY(unicode) == -1) {
if (!PyUnicode_Check(unicode)) {
PyErr_BadArgument();
return (Py_UCS4)-1;
}
if (PyUnicode_READY(unicode) == -1) {
return (Py_UCS4)-1;
}
if (index < 0 || index >= PyUnicode_GET_LENGTH(unicode)) {
PyErr_SetString(PyExc_IndexError, "string index out of range");
return (Py_UCS4)-1;
@ -11706,10 +11709,13 @@ unicode_getitem(PyObject *self, Py_ssize_t index)
enum PyUnicode_Kind kind;
Py_UCS4 ch;
if (!PyUnicode_Check(self) || PyUnicode_READY(self) == -1) {
if (!PyUnicode_Check(self)) {
PyErr_BadArgument();
return NULL;
}
if (PyUnicode_READY(self) == -1) {
return NULL;
}
if (index < 0 || index >= PyUnicode_GET_LENGTH(self)) {
PyErr_SetString(PyExc_IndexError, "string index out of range");
return NULL;

13
Python/ceval.c
View file

@ -5307,14 +5307,17 @@ import_all_from(PyObject *locals, PyObject *v)
PyErr_Clear();
break;
}
if (skip_leading_underscores &&
PyUnicode_Check(name) &&
PyUnicode_READY(name) != -1 &&
PyUnicode_READ_CHAR(name, 0) == '_')
{
if (skip_leading_underscores && PyUnicode_Check(name)) {
if (PyUnicode_READY(name) == -1) {
Py_DECREF(name);
err = -1;
break;
}
if (PyUnicode_READ_CHAR(name, 0) == '_') {
Py_DECREF(name);
continue;
}
}
value = PyObject_GetAttr(v, name);
if (value == NULL)
err = -1;