Issue #7481: When a threading.Thread failed to start it would leave the
instance stuck in initial state and present in threading.enumerate().
diff --git a/Lib/threading.py b/Lib/threading.py
index 5674010..c6fb2da 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -469,7 +469,12 @@
self._note("%s.start(): starting thread", self)
with _active_limbo_lock:
_limbo[self] = self
- _start_new_thread(self.__bootstrap, ())
+ try:
+ _start_new_thread(self.__bootstrap, ())
+ except Exception:
+ with _active_limbo_lock:
+ del _limbo[self]
+ raise
self.__started.wait()
def run(self):