1 files changed, 2 insertions, 6 deletions
diff --git a/Lib/pdb.py b/Lib/pdb.py
index bc0ec68..e697dfa 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1220,9 +1220,7 @@ def post_mortem(t=None):
 
     p = Pdb()
     p.reset()
-    while t.tb_next is not None:
-        t = t.tb_next
-    p.interaction(t.tb_frame, t)
+    p.interaction(None, t)
 
 def pm():
     post_mortem(sys.last_traceback)
@@ -1285,9 +1283,7 @@ def main():
             print("Uncaught exception. Entering post mortem debugging")
             print("Running 'cont' or 'step' will restart the program")
             t = sys.exc_info()[2]
-            while t.tb_next is not None:
-                t = t.tb_next
-            pdb.interaction(t.tb_frame,t)
+            pdb.interaction(None, t)
             print("Post mortem debugger finished. The "+mainpyfile+" will be restarted")