diff -r cd72eae05bdf -r 3c00344f49c9 test/lp_test.cc
--- a/test/lp_test.cc	Mon Jul 16 16:21:40 2018 +0200
+++ b/test/lp_test.cc	Wed Oct 17 19:14:07 2018 +0200
@@ -2,7 +2,7 @@
  *
  * This file is a part of LEMON, a generic C++ optimization library.
  *
- * Copyright (C) 2003-2009
+ * Copyright (C) 2003-2013
  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
  * (Egervary Research Group on Combinatorial Optimization, EGRES).
  *
@@ -39,6 +39,9 @@
 #include <lemon/clp.h>
 #endif
 
+#ifdef LEMON_HAVE_LP
+#include <lemon/lp.h>
+#endif
 using namespace lemon;
 
 int countCols(LpBase & lp) {
@@ -198,7 +201,12 @@
       LP::Constr c = v >= -3;
       c = c <= 4;
       LP::Constr c2;
+#if ( __GNUC__ == 4 ) && ( __GNUC_MINOR__ == 3 )
+      c2 = ( -3 <= v ) <= 4;
+#else
       c2 = -3 <= v <= 4;
+#endif
+
     }
 
     e[x[3]]=2;
@@ -240,8 +248,7 @@
 
   {
     LP::DualExpr e,f,g;
-    LP::Row p1 = INVALID, p2 = INVALID, p3 = INVALID,
-      p4 = INVALID, p5 = INVALID;
+    LP::Row p1 = INVALID, p2 = INVALID;
 
     e[p1]=2;
     e[p1]+=2;
@@ -412,6 +419,15 @@
   LpSkeleton lp_skel;
   lpTest(lp_skel);
 
+#ifdef LEMON_HAVE_LP
+  {
+    Lp lp,lp2;
+    lpTest(lp);
+    aTest(lp2);
+    cloneTest<Lp>();
+  }
+#endif
+
 #ifdef LEMON_HAVE_GLPK
   {
     GlpkLp lp_glpk1,lp_glpk2;