1 files changed, 14 insertions, 0 deletions
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index a5eb866..d863f9f 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -5773,6 +5773,13 @@ os_execv_impl(PyObject *module, path_t *path, PyObject *argv)
     EXECV_CHAR **argvlist;
     Py_ssize_t argc;
 
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (!_PyInterpreterState_HasFeature(interp, Py_RTFLAGS_EXEC)) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "exec not supported for isolated subinterpreters");
+        return NULL;
+    }
+
     /* execv has two arguments: (path, argv), where
        argv is a list or tuple of strings. */
 
@@ -5839,6 +5846,13 @@ os_execve_impl(PyObject *module, path_t *path, PyObject *argv, PyObject *env)
     EXECV_CHAR **envlist;
     Py_ssize_t argc, envc;
 
+    PyInterpreterState *interp = _PyInterpreterState_GET();
+    if (!_PyInterpreterState_HasFeature(interp, Py_RTFLAGS_EXEC)) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "exec not supported for isolated subinterpreters");
+        return NULL;
+    }
+
     /* execve has three arguments: (path, argv, env), where
        argv is a list or tuple of strings and env is a dictionary
        like posix.environ. */