fix check in reducer

trailofbits · Dec 26, 2018 · 54c42c7 · 54c42c7
1 parent 2a618d0
commit 54c42c7
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/bin/deepstate/reducer.py b/bin/deepstate/reducer.py
@@ -99,8 +99,9 @@ def structure(result):
         currentOneOf.append(-1)
       elif "Reading byte at" in line:
         lastRead = int(line.split()[-1])
-        if currentOneOf[-1] == -1:
-          currentOneOf[-1] = lastRead
+        if len(currentOneOf) > 0:
+          if currentOneOf[-1] == -1:
+            currentOneOf[-1] = lastRead
       elif "FINISHED OneOf CALL" in line:
         OneOfs.append((currentOneOf[-1], lastRead))
         currentOneOf = currentOneOf[:-1]