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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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7
Python/import.c
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@ -4358,7 +4358,12 @@ _PyImport_LazyImportModuleLevelObject(PyThreadState *tstate,
PyInterpreterState *interp = tstate->interp;
_PyInterpreterFrame *frame = _PyEval_GetFrame();
assert(frame != NULL && frame->f_globals == frame->f_locals); // should only be called in global scope
if (frame == NULL || frame->f_globals != frame->f_locals) {
Py_DECREF(abs_name);
PyErr_SetString(PyExc_SyntaxError,
"'lazy import' is only allowed at module level");
return NULL;
}
// Check if the filter disables the lazy import.
// We must hold a reference to the filter while calling it to prevent