https://github.com/python/cpython/commit/6afab81f72cae75baee877271a7a75c4ad187f84
commit: 6afab81f72cae75baee877271a7a75c4ad187f84
branch: 3.13
author: Miss Islington (bot) <31488909+miss-isling...@users.noreply.github.com>
committer: sobolevn <m...@sobolevn.me>
date: 2025-04-07T12:23:02Z
summary:
[3.13] gh-132171: Fix `_interpreters.run_string` crash on string subclass
(GH-132173) (#132219)
gh-132171: Fix `_interpreters.run_string` crash on string subclass (GH-132173)
(cherry picked from commit 398071871066548954f4c51e8250d13b7c9659e0)
Co-authored-by: sobolevn <m...@sobolevn.me>
files:
A Misc/NEWS.d/next/Library/2025-04-06-23-09-21.gh-issue-132171.zZqvfn.rst
M Lib/test/test__interpreters.py
M Modules/_interpretersmodule.c
diff --git a/Lib/test/test__interpreters.py b/Lib/test/test__interpreters.py
index 8f32a446572d5a..3de774ae8b012e 100644
--- a/Lib/test/test__interpreters.py
+++ b/Lib/test/test__interpreters.py
@@ -745,6 +745,12 @@ def test_bytes_for_script(self):
with self.assertRaises(TypeError):
_interpreters.run_string(self.id, b'print("spam")')
+ def test_str_subclass_string(self):
+ class StrSubclass(str): pass
+
+ output = _run_output(self.id, StrSubclass('print(1 + 2)'))
+ self.assertEqual(output, '3\n')
+
def test_with_shared(self):
r, w = os.pipe()
diff --git
a/Misc/NEWS.d/next/Library/2025-04-06-23-09-21.gh-issue-132171.zZqvfn.rst
b/Misc/NEWS.d/next/Library/2025-04-06-23-09-21.gh-issue-132171.zZqvfn.rst
new file mode 100644
index 00000000000000..89f34fa3168cae
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-04-06-23-09-21.gh-issue-132171.zZqvfn.rst
@@ -0,0 +1 @@
+Fix crash of ``_interpreters.run_string`` on string subclasses.
diff --git a/Modules/_interpretersmodule.c b/Modules/_interpretersmodule.c
index c968b33939c420..8f912d803ba519 100644
--- a/Modules/_interpretersmodule.c
+++ b/Modules/_interpretersmodule.c
@@ -331,7 +331,7 @@ get_code_str(PyObject *arg, Py_ssize_t *len_p, PyObject
**bytes_p, int *flags_p)
int flags = 0;
if (PyUnicode_Check(arg)) {
- assert(PyUnicode_CheckExact(arg)
+ assert(PyUnicode_Check(arg)
&& (check_code_str((PyUnicodeObject *)arg) == NULL));
codestr = PyUnicode_AsUTF8AndSize(arg, &len);
if (codestr == NULL) {
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