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-rw-r--r--passes/sat/freduce.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/sat/freduce.cc b/passes/sat/freduce.cc
index 762edfdfb..f87b85da9 100644
--- a/passes/sat/freduce.cc
+++ b/passes/sat/freduce.cc
@@ -27,6 +27,7 @@
#include <stdio.h>
#include <string.h>
#include <algorithm>
+#include <limits>
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN