Fix bug 1725856.
diff --git a/Lib/bsddb/__init__.py b/Lib/bsddb/__init__.py
index cf32668..7eb625c 100644
--- a/Lib/bsddb/__init__.py
+++ b/Lib/bsddb/__init__.py
@@ -274,12 +274,16 @@
def first(self):
self._checkOpen()
+ # fix 1725856: don't needlessly try to restore our cursor position
+ self.saved_dbc_key = None
self._checkCursor()
rv = _DeadlockWrap(self.dbc.first)
return rv
def last(self):
self._checkOpen()
+ # fix 1725856: don't needlessly try to restore our cursor position
+ self.saved_dbc_key = None
self._checkCursor()
rv = _DeadlockWrap(self.dbc.last)
return rv
diff --git a/Lib/test/test_bsddb.py b/Lib/test/test_bsddb.py
index fbe855f..acd4972 100755
--- a/Lib/test/test_bsddb.py
+++ b/Lib/test/test_bsddb.py
@@ -127,6 +127,22 @@
items.append(self.f.previous())
self.assertSetEquals(items, self.d.items())
+ def test_first_while_deleting(self):
+ # Test for bug 1725856
+ self.assert_(len(self.d) >= 2, "test requires >=2 items")
+ for _ in self.d:
+ key = self.f.first()[0]
+ del self.f[key]
+ self.assertEqual([], self.f.items(), "expected empty db after test")
+
+ def test_last_while_deleting(self):
+ # Test for bug 1725856's evil twin
+ self.assert_(len(self.d) >= 2, "test requires >=2 items")
+ for _ in self.d:
+ key = self.f.last()[0]
+ del self.f[key]
+ self.assertEqual([], self.f.items(), "expected empty db after test")
+
def test_set_location(self):
self.assertEqual(self.f.set_location('e'), ('e', self.d['e']))