From 1c9e5226d80204e40181d4a6aacf937a69a49de3 Mon Sep 17 00:00:00 2001
From: Soonho Kong <soonhok@cs.cmu.edu>
Date: Mon, 12 Aug 2013 14:52:36 -0700
Subject: [PATCH] Fix compile-error by adding "defined" to interval_def.h

---
 src/interval/interval_def.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/interval/interval_def.h b/src/interval/interval_def.h
index 881b267a3..667749fd6 100644
--- a/src/interval/interval_def.h
+++ b/src/interval/interval_def.h
@@ -242,7 +242,7 @@ interval<T> & interval<T>::operator*=(interval<T> const & o) {
     using std::swap;
     interval<T> const & i1 = *this;
     interval<T> const & i2 = o;
-#if LEAN_DEBUG || LEAN_TRACE
+#if defined(LEAN_DEBUG) || defined(LEAN_TRACE)
     bool i1_contains_zero = i1.contains_zero();
     bool i2_contains_zero = i2.contains_zero();
 #endif