From 41351662bcd21672d8ccfa62fe44d72027e6bcf8 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Mon, 26 Sep 2022 17:20:08 +0200
Subject: [PATCH] gh-96848: Fix -X int_max_str_digits option parsing (#96988)
Fix command line parsing: reject "-X int_max_str_digits" option with
no value (invalid) when the PYTHONINTMAXSTRDIGITS environment
variable is set to a valid limit.
---
Lib/test/test_cmd_line.py | 2 ++
.../2022-09-21-14-38-31.gh-issue-96848.WuoLzU.rst | 3 +++
Python/initconfig.c | 3 ++-
3 files changed, 7 insertions(+), 1 deletion(-)
create mode 100644 Misc/NEWS.d/next/Core and Builtins/2022-09-21-14-38-31.gh-issue-96848.WuoLzU.rst
diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index db967088804..3de8c3d4b11 100644
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -871,6 +871,8 @@ def test_int_max_str_digits(self):
assert_python_failure('-X', 'int_max_str_digits', '-c', code)
assert_python_failure('-X', 'int_max_str_digits=foo', '-c', code)
assert_python_failure('-X', 'int_max_str_digits=100', '-c', code)
+ assert_python_failure('-X', 'int_max_str_digits', '-c', code,
+ PYTHONINTMAXSTRDIGITS='4000')
assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='foo')
assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='100')
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-09-21-14-38-31.gh-issue-96848.WuoLzU.rst b/Misc/NEWS.d/next/Core and Builtins/2022-09-21-14-38-31.gh-issue-96848.WuoLzU.rst
new file mode 100644
index 00000000000..a9b04ce87d4
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-09-21-14-38-31.gh-issue-96848.WuoLzU.rst
@@ -0,0 +1,3 @@
+Fix command line parsing: reject :option:`-X int_max_str_digits <-X>` option
+with no value (invalid) when the :envvar:`PYTHONINTMAXSTRDIGITS` environment
+variable is set to a valid limit. Patch by Victor Stinner.
diff --git a/Python/initconfig.c b/Python/initconfig.c
index f18ec4068bc..bfbb7dbacf9 100644
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -1779,10 +1779,10 @@ static PyStatus
config_init_int_max_str_digits(PyConfig *config)
{
int maxdigits;
- int valid = 0;
const char *env = config_get_env(config, "PYTHONINTMAXSTRDIGITS");
if (env) {
+ int valid = 0;
if (!_Py_str_to_int(env, &maxdigits)) {
valid = ((maxdigits == 0) || (maxdigits >= _PY_LONG_MAX_STR_DIGITS_THRESHOLD));
}
@@ -1800,6 +1800,7 @@ config_init_int_max_str_digits(PyConfig *config)
const wchar_t *xoption = config_get_xoption(config, L"int_max_str_digits");
if (xoption) {
const wchar_t *sep = wcschr(xoption, L'=');
+ int valid = 0;
if (sep) {
if (!config_wstr_to_int(sep + 1, &maxdigits)) {
valid = ((maxdigits == 0) || (maxdigits >= _PY_LONG_MAX_STR_DIGITS_THRESHOLD));
--
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