python · vstinner · Jun 21, 2021 · Jun 21, 2021
diff --git a/Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst b/Misc/NEWS.d/next/Library/2021-06-16-16-52-14.bpo-44434.SQS4Pg.rst
@@ -0,0 +1,4 @@
+_thread.start_new_thread() no longer calls PyThread_exit_thread() explicitly
+at the thread exit, the call was redundant. On Linux with the glibc,
+pthread_exit() aborts the whole process if dlopen() fails to open
+libgcc_s.so file (ex: EMFILE error). Patch by Victor Stinner.
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
@@ -1105,7 +1105,9 @@ thread_run(void *boot_raw)
    PyThreadState_Clear(tstate);
    _PyThreadState_DeleteCurrent(tstate);

-    PyThread_exit_thread();
+    // bpo-44434: Don't call explicitly PyThread_exit_thread(). On Linux with
+    // the glibc, pthread_exit() can abort the whole process if dlopen() fails
+    // to open the libgcc_s.so library (ex: EMFILE error).
 }

 static PyObject *