gh-151177: Fix race condition in _testembed (GH-151293)

ZeroIntensity · web-flow · commit f9ffca39351b · 2026-06-11T11:06:48.000+02:00
diff --git a/Programs/_testembed.c b/Programs/_testembed.c
@@ -2715,8 +2715,8 @@ do_tstate_ensure(void *arg)
     PyThreadState_Release(tokens[2]);
     PyThreadState_Release(tokens[1]);
     PyThreadState_Release(tokens[0]);
-    PyInterpreterGuard_Close(guard);
     _Py_atomic_store_int(&data->done, 1);
+    PyInterpreterGuard_Close(guard);
 }
 
 static int

Original file line number	Diff line number	Diff line change
`@@ -2715,8 +2715,8 @@ do_tstate_ensure(void *arg)`
`2715`	`2715`	`PyThreadState_Release(tokens[2]);`
`2716`	`2716`	`PyThreadState_Release(tokens[1]);`
`2717`	`2717`	`PyThreadState_Release(tokens[0]);`
`2718`		`- PyInterpreterGuard_Close(guard);`
`2719`	`2718`	`_Py_atomic_store_int(&data->done, 1);`
	`2719`	`+ PyInterpreterGuard_Close(guard);`
`2720`	`2720`	`}`
`2721`	`2721`
`2722`	`2722`	`static int`