diff --git a/test/boost_no_dep_nested_class.ipp b/test/boost_no_dep_nested_class.ipp
index 779b2229..26642995 100644
--- a/test/boost_no_dep_nested_class.ipp
+++ b/test/boost_no_dep_nested_class.ipp
@@ -37,9 +37,9 @@ void foo_test(T)
    typedef typename foo_type::BOOST_NESTED_TEMPLATE bar<UDT2> bar_type;
    foo<T> ft;
    bar_type bt;
-   (void)bt;
-   (void)ft;
-};
+   (void) &bt;
+   (void) &ft;
+}
 
 int test()
 {
diff --git a/test/boost_no_dep_val_param.ipp b/test/boost_no_dep_val_param.ipp
index 08447431..b74d8a14 100644
--- a/test/boost_no_dep_val_param.ipp
+++ b/test/boost_no_dep_val_param.ipp
@@ -26,6 +26,7 @@ struct typifier
 int test()
 {
    X<typifier<int> > x;
+   (void) &x;        // avoid "unused variable" warning
    return 0;
 }
 
diff --git a/test/boost_no_mem_tem_keyword.ipp b/test/boost_no_mem_tem_keyword.ipp
index 7c7024d0..59629b1f 100644
--- a/test/boost_no_mem_tem_keyword.ipp
+++ b/test/boost_no_mem_tem_keyword.ipp
@@ -39,6 +39,7 @@ void test_proc(T i)
    typedef typename ifoo::template nested<double> bound_t;
    typedef typename bound_t::other other;
    other o;
+   (void) &o;         // avoid "unused variable" warning
 }
 
 #else
diff --git a/test/boost_no_mem_templates.ipp b/test/boost_no_mem_templates.ipp
index 78de0ef7..fa2c1955 100644
--- a/test/boost_no_mem_templates.ipp
+++ b/test/boost_no_mem_templates.ipp
@@ -42,6 +42,7 @@ void test_proc(T i)
    typedef typename ifoo::BOOST_NESTED_TEMPLATE nested<double> bound_t;
    typedef typename bound_t::other other;
    other o;
+   (void) &o;
 }
 
 int test()
diff --git a/test/boost_no_priv_aggregate.ipp b/test/boost_no_priv_aggregate.ipp
index fab52207..c345d0fd 100644
--- a/test/boost_no_priv_aggregate.ipp
+++ b/test/boost_no_priv_aggregate.ipp
@@ -25,6 +25,7 @@ public:
 int test()
 {
    t inst = { 0, 0, };
+   (void) &inst;      // avoid "unused variable" warning
    return 0;
 }
 
diff --git a/test/boost_no_std_iter_traits.ipp b/test/boost_no_std_iter_traits.ipp
index 7410914d..539b0051 100644
--- a/test/boost_no_std_iter_traits.ipp
+++ b/test/boost_no_std_iter_traits.ipp
@@ -49,23 +49,23 @@ int test()
    //
    // suppress some warnings:
    //
-   (void)v;
-   (void)d;
-   (void)p;
-   (void)r;
-   (void)cat;
+   (void) &v;
+   (void) &d;
+   (void) &p;
+   (void) &r;
+   (void) &cat;
 
-   (void)v2;
-   (void)d2;
-   (void)p2;
-   (void)r2;
-   (void)cat2;
+   (void) &v2;
+   (void) &d2;
+   (void) &p2;
+   (void) &r2;
+   (void) &cat2;
 
-   (void)v3;
-   (void)d3;
-   (void)p3;
-   (void)r3;
-   (void)cat3;
+   (void) &v3;
+   (void) &d3;
+   (void) &p3;
+   (void) &r3;
+   (void) &cat3;
 
    return 0;
 }
diff --git a/test/boost_no_std_iterator.ipp b/test/boost_no_std_iterator.ipp
index 2e0b484d..84fa0eab 100644
--- a/test/boost_no_std_iterator.ipp
+++ b/test/boost_no_std_iterator.ipp
@@ -43,17 +43,17 @@ int test()
    //
    // suppress some warnings:
    //
-   (void)v;
-   (void)d;
-   (void)p;
-   (void)r;
-   (void)cat;
+   (void) &v;
+   (void) &d;
+   (void) &p;
+   (void) &r;
+   (void) &cat;
 
-   (void)v2;
-   (void)d2;
-   (void)p2;
-   (void)r2;
-   (void)cat2;
+   (void) &v2;
+   (void) &d2;
+   (void) &p2;
+   (void) &r2;
+   (void) &cat2;
 
    return 0;
 }
diff --git a/test/boost_no_std_locale.ipp b/test/boost_no_std_locale.ipp
index 756b947d..6d35014b 100644
--- a/test/boost_no_std_locale.ipp
+++ b/test/boost_no_std_locale.ipp
@@ -21,8 +21,8 @@ int test()
    // construct a pointer to a facet:
    //
    const std::ctype<char>* pct = 0;
-   (void)l1;
-   (void)pct;
+   (void) &l1;
+   (void) &pct;
    return 0;
 }
 
diff --git a/test/boost_no_std_messages.ipp b/test/boost_no_std_messages.ipp
index c51db069..e62a381d 100644
--- a/test/boost_no_std_messages.ipp
+++ b/test/boost_no_std_messages.ipp
@@ -15,7 +15,7 @@ namespace boost_no_std_messages{
 int test()
 {
    const std::messages<char>* pmf = 0;
-   (void)pmf;
+   (void) &pmf;
    return 0;
 }