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Fix some crashes

Browse source 
```
import types
types.LazyImportType({}, "3", 0)
```

```
def f():
    exec("lazy import json")
f()
```
This commit is contained in:
Pablo Galindo Salgado 2025-12-08 01:07:05 +00:00
parent a05b50dbca
commit ac80f2d978
3 changed files with 73 additions and 3 deletions
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8
Objects/lazyimportobject.c
View file

@ -18,10 +18,14 @@ _PyLazyImport_New(PyObject *builtins, PyObject *from, PyObject *attr)
PyErr_BadArgument();
return NULL;
}
if (attr == Py_None) {
if (attr == Py_None || attr == NULL) {
attr = NULL;
}
assert(!attr || PyObject_IsTrue(attr));
else if (!PyUnicode_Check(attr) && !PyTuple_Check(attr)) {
PyErr_SetString(PyExc_TypeError,
"lazy_import: fromlist must be None, a string, or a tuple");
return NULL;
}
m = PyObject_GC_New(PyLazyImportObject, &PyLazyImport_Type);
if (m == NULL) {
return NULL;