diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/lock_tests.py | 2 | ||||
| -rw-r--r-- | Lib/threading.py | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/lock_tests.py b/Lib/test/lock_tests.py index ff30d41fb8..3ed61f3b93 100644 --- a/Lib/test/lock_tests.py +++ b/Lib/test/lock_tests.py @@ -247,6 +247,7 @@ class RLockTests(BaseLockTests): # Cannot release an unacquired lock lock = self.locktype() self.assertRaises(RuntimeError, lock.release) + self.assertRaises(RuntimeError, lock._release_save) lock.acquire() lock.acquire() lock.release() @@ -254,6 +255,7 @@ class RLockTests(BaseLockTests): lock.release() lock.release() self.assertRaises(RuntimeError, lock.release) + self.assertRaises(RuntimeError, lock._release_save) def test_different_thread(self): # Cannot release from a different thread diff --git a/Lib/threading.py b/Lib/threading.py index eb3cb626c3..28c2146671 100644 --- a/Lib/threading.py +++ b/Lib/threading.py @@ -157,6 +157,8 @@ class _RLock(_Verbose): def _release_save(self): if __debug__: self._note("%s._release_save()", self) + if self._count == 0: + raise RuntimeError("cannot release un-acquired lock") count = self._count self._count = 0 owner = self._owner |