Fix build on some GCCs.

diff --git a/test/ssa_reader_test.cc b/test/ssa_reader_test.cc
index c62505af6ed61e773dd3dd3f3fb3ef99e27e4fb3..3c958f262b9bf6a1bc48dc4198cecb5dad882760 100644 (file)
--- a/test/ssa_reader_test.cc
+++ b/test/ssa_reader_test.cc
@@ -24,8 +24,10 @@
 #include <boost/test/unit_test.hpp>
 #include <boost/filesystem.hpp>
 #include <cstdio>
+#include <cmath>
 
 using std::list;
+using std::fabs;
 
 BOOST_AUTO_TEST_CASE (ssa_reader_test)
 {