From 58db347e010745e4b0e778dab7b1a2a86a15524f Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Thu, 19 Nov 2015 23:23:39 +0800
Subject: [PATCH] transforms.iodelay_estimator: fix uninitialized access.

---
 artiq/compiler/transforms/iodelay_estimator.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/artiq/compiler/transforms/iodelay_estimator.py b/artiq/compiler/transforms/iodelay_estimator.py
index d13f9a36a..b530a1d90 100644
--- a/artiq/compiler/transforms/iodelay_estimator.py
+++ b/artiq/compiler/transforms/iodelay_estimator.py
@@ -266,6 +266,8 @@ class IODelayEstimator(algorithm.Visitor):
                     { arg: self.evaluate(args[arg], abort=abort) for arg in free_vars })
             else:
                 assert False
+        else:
+            call_delay = iodelay.Const(0)
 
         self.current_delay += call_delay
         node.iodelay = call_delay