gh-94930: skipitem() in getargs.c should return non-NULL on error (GH-94931)

(cherry picked from commit 067f0da33506f70c36a67d5f3d8d011c8dae10c9)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

1 files changed, 21 insertions, 2 deletions

diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 1d557fe..3467c04 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -6002,6 +6002,7 @@ settrace_to_record(PyObject *self, PyObject *list)
 static PyObject *negative_dictoffset(PyObject *, PyObject *);
 static PyObject *test_buildvalue_issue38913(PyObject *, PyObject *);
 static PyObject *getargs_s_hash_int(PyObject *, PyObject *, PyObject*);
+static PyObject *getargs_s_hash_int2(PyObject *, PyObject *, PyObject*);
 
 static PyMethodDef TestMethods[] = {
     {"raise_exception",         raise_exception,                 METH_VARARGS},
@@ -6116,6 +6117,8 @@ static PyMethodDef TestMethods[] = {
     {"getargs_s_hash",          getargs_s_hash,                  METH_VARARGS},
     {"getargs_s_hash_int",      _PyCFunction_CAST(getargs_s_hash_int),
       METH_VARARGS|METH_KEYWORDS},
+    {"getargs_s_hash_int2",      _PyCFunction_CAST(getargs_s_hash_int2),
+      METH_VARARGS|METH_KEYWORDS},
     {"getargs_z",               getargs_z,                       METH_VARARGS},
     {"getargs_z_star",          getargs_z_star,                  METH_VARARGS},
     {"getargs_z_hash",          getargs_z_hash,                  METH_VARARGS},
@@ -7835,11 +7838,27 @@ PyAPI_FUNC(int) PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
 static PyObject *
 getargs_s_hash_int(PyObject *self, PyObject *args, PyObject *kwargs)
 {
-    static char *keywords[] = {"", "x", NULL};
+    static char *keywords[] = {"", "", "x", NULL};
+    Py_buffer buf = {NULL};
+    const char *s;
+    int len;
+    int i = 0;
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "w*|s#i", keywords, &buf, &s, &len, &i))
+        return NULL;
+    PyBuffer_Release(&buf);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+getargs_s_hash_int2(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    static char *keywords[] = {"", "", "x", NULL};
+    Py_buffer buf = {NULL};
     const char *s;
     int len;
     int i = 0;
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s#i", keywords, &s, &len, &i))
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "w*|(s#)i", keywords, &buf, &s, &len, &i))
         return NULL;
+    PyBuffer_Release(&buf);
     Py_RETURN_NONE;
 }