diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index d152826213ebdb..1d2d15c7a24c3b 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -29,6 +29,11 @@
 except ImportError:
     threading = None
 
+try:
+    import _testcapi
+except ImportError:
+    _testcapi = None
+
 if support.PGO:
     raise unittest.SkipTest("test is not helpful for PGO")
 
@@ -2565,42 +2570,24 @@ def test_communicate_BrokenPipeError_stdin_close_with_timeout(self):
             proc.communicate(timeout=999)
             mock_proc_stdin.close.assert_called_once_with()
 
-    @unittest.skipIf(not ctypes, 'ctypes module required')
-    @unittest.skipIf(not sys.executable, 'Test requires sys.executable')
-    def test_child_terminated_in_stopped_state(self):
+    @unittest.skipUnless(_testcapi is not None
+                         and hasattr(_testcapi, 'W_STOPCODE'),
+                         'need _testcapi.W_STOPCODE')
+    def test_stopped(self):
         """Test wait() behavior when waitpid returns WIFSTOPPED; issue29335."""
-        PTRACE_TRACEME = 0  # From glibc and MacOS (PT_TRACE_ME).
-        libc_name = ctypes.util.find_library('c')
-        libc = ctypes.CDLL(libc_name)
-        if not hasattr(libc, 'ptrace'):
-            raise unittest.SkipTest('ptrace() required')
-
-        code = textwrap.dedent(f"""
-             import ctypes
-             import faulthandler
-             from test.support import SuppressCrashReport
-
-             libc = ctypes.CDLL({libc_name!r})
-             libc.ptrace({PTRACE_TRACEME}, 0, 0)
-        """)
-
-        child = subprocess.Popen([sys.executable, '-c', code])
-        if child.wait() != 0:
-            raise unittest.SkipTest('ptrace() failed - unable to test')
-
-        code += textwrap.dedent(f"""
-             with SuppressCrashReport():
-                # Crash the process
-                faulthandler._sigsegv()
-        """)
-        child = subprocess.Popen([sys.executable, '-c', code])
-        try:
-            returncode = child.wait()
-        except:
-            child.kill()  # Clean up the hung stopped process.
-            raise
-        self.assertNotEqual(0, returncode)
-        self.assertLess(returncode, 0)  # signal death, likely SIGSEGV.
+        args = [sys.executable, '-c', 'pass']
+        proc = subprocess.Popen(args)
+
+        # Wait until the real process completes to avoid zombie process
+        pid = proc.pid
+        pid, status = os.waitpid(pid, 0)
+        self.assertEqual(status, 0)
+
+        status = _testcapi.W_STOPCODE(3)
+        with mock.patch('subprocess.os.waitpid', return_value=(pid, status)):
+            returncode = proc.wait()
+
+        self.assertEqual(returncode, -3)
 
 
 @unittest.skipUnless(mswindows, "Windows specific tests")
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 655669050dd222..95c10184159808 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -18,6 +18,10 @@
 #  include <winsock2.h>         /* struct timeval */
 #endif
 
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>           /* For W_STOPCODE */
+#endif
+
 #ifdef WITH_THREAD
 #include "pythread.h"
 #endif /* WITH_THREAD */
@@ -4272,6 +4276,7 @@ test_pyobject_fastcallkeywords(PyObject *self, PyObject *args)
     return _PyObject_FastCallKeywords(func, stack, nargs, kwnames);
 }
 
+
 static PyObject*
 stack_pointer(PyObject *self, PyObject *args)
 {
@@ -4280,6 +4285,20 @@ stack_pointer(PyObject *self, PyObject *args)
 }
 
 
+#ifdef W_STOPCODE
+static PyObject*
+py_w_stopcode(PyObject *self, PyObject *args)
+{
+    int sig, status;
+    if (!PyArg_ParseTuple(args, "i", &sig)) {
+        return NULL;
+    }
+    status = W_STOPCODE(sig);
+    return PyLong_FromLong(status);
+}
+#endif
+
+
 static PyMethodDef TestMethods[] = {
     {"raise_exception",         raise_exception,                 METH_VARARGS},
     {"raise_memoryerror",   (PyCFunction)raise_memoryerror,  METH_NOARGS},
@@ -4493,6 +4512,9 @@ static PyMethodDef TestMethods[] = {
     {"pyobject_fastcalldict", test_pyobject_fastcalldict, METH_VARARGS},
     {"pyobject_fastcallkeywords", test_pyobject_fastcallkeywords, METH_VARARGS},
     {"stack_pointer", stack_pointer, METH_NOARGS},
+#ifdef W_STOPCODE
+    {"W_STOPCODE", py_w_stopcode, METH_VARARGS},
+#endif
     {NULL, NULL} /* sentinel */
 };
 

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