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[3.11] gh-105375: Improve error handling in the sys extension module (#105611) (#105666)

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(cherry picked from commit 41cddc2e93)

In _PySys_AddXOptionWithError() and sys_add_xoption(),
bail on first error to prevent exceptions from possibly being
overwritten.
This commit is contained in:
Erlend E. Aasland 2023-06-11 23:08:40 +02:00 • committed by GitHub
parent a03449374e
commit f98d475ee3
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2 changed files with 20 additions and 6 deletions
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24
Python/sysmodule.c
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@ -2360,15 +2360,21 @@ _PySys_AddXOptionWithError(const wchar_t *s)
const wchar_t *name_end = wcschr(s, L'=');
if (!name_end) {
name = PyUnicode_FromWideChar(s, -1);
if (name == NULL) {
goto error;
}
value = Py_True;
Py_INCREF(value);
}
else {
name = PyUnicode_FromWideChar(s, name_end - s);
if (name == NULL) {
goto error;
}
value = PyUnicode_FromWideChar(name_end + 1, -1);
}
if (name == NULL || value == NULL) {
goto error;
if (value == NULL) {
goto error;
}
}
if (PyDict_SetItem(opts, name, value) < 0) {
goto error;
@ -3019,15 +3025,21 @@ sys_add_xoption(PyObject *opts, const wchar_t *s)
const wchar_t *name_end = wcschr(s, L'=');
if (!name_end) {
name = PyUnicode_FromWideChar(s, -1);
if (name == NULL) {
goto error;
}
value = Py_True;
Py_INCREF(value);
}
else {
name = PyUnicode_FromWideChar(s, name_end - s);
if (name == NULL) {
goto error;
}
value = PyUnicode_FromWideChar(name_end + 1, -1);
}
if (name == NULL || value == NULL) {
goto error;
if (value == NULL) {
goto error;
}
}
if (PyDict_SetItem(opts, name, value) < 0) {
goto error;