commit af320b389bba5221870553e70eaefee3bdf860e5
author Serhiy Storchaka <storchaka@gmail.com> Wed Jul 08 22:58:55 2015 +0300
committer Serhiy Storchaka <storchaka@gmail.com> Wed Jul 08 22:58:55 2015 +0300
tree 72c23dde067ecb047c65d9d74be7cc3d728250a3
parent e36402a83041007b34a111fb20ede88abf4cb223

Added regression test for issue24581.

Lib/test/test_set.py

diff --git a/Lib/test/test_set.py b/Lib/test/test_set.py
index 65e4243..f084ebe 100644
--- a/Lib/test/test_set.py
+++ b/Lib/test/test_set.py
@@ -1731,6 +1731,17 @@
         be_bad = True
         set1.symmetric_difference_update(dict2)
 
+    def test_iter_and_mutate(self):
+        # Issue #24581
+        s = set(range(100))
+        s.clear()
+        s.update(range(100))
+        si = iter(s)
+        s.clear()
+        a = list(range(100))
+        s.update(range(100))
+        list(si)
+
 # Application tests (based on David Eppstein's graph recipes ====================================
 
 def powerset(U):