1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/sre_parse.py b/Lib/sre_parse.py
index 36036b6..3840365 100644
--- a/Lib/sre_parse.py
+++ b/Lib/sre_parse.py
@@ -446,6 +446,7 @@ def _parse(source, state):
                 min, max = 0, 1
             elif this == "*":
                 min, max = 0, MAXREPEAT
+
             elif this == "+":
                 min, max = 1, MAXREPEAT
             elif this == "{":
@@ -475,6 +476,8 @@ def _parse(source, state):
             if subpattern:
                 item = subpattern[-1:]
             else:
+                item = None
+            if not item or (len(item) == 1 and item[0][0] == AT):
                 raise error, "nothing to repeat"
             if item[0][0] in (MIN_REPEAT, MAX_REPEAT):
                 raise error, "multiple repeat"