Fixed warnings reported by gcc 4.7.1

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

src/muz_qe/dl_context.cpp

@@ -1551,6 +1551,8 @@ namespace datalog {
         }
     }
     
+#if 0
+    // [Leo] dead code?
     static func_decl* get_head_relation(ast_manager& m, expr* fml) {
         while (is_quantifier(fml)) {
             fml = to_quantifier(fml)->get_expr();            
@@ -1564,6 +1566,7 @@ namespace datalog {
             return 0;
         }
     }
+#endif
 
     void context::display_smt2(
         unsigned num_queries, 

src/shell/main.cpp

@@ -107,6 +107,8 @@ public:
         m_statistics(g_display_statistics) {
     }
 
+    virtual ~extra_params() {}
+
     virtual void register_params(ini_params & p) {
         datalog_params::register_params(p);
         p.register_bool_param("STATISTICS", m_statistics, "display statistics");

src/test/interval.cpp

@@ -91,6 +91,7 @@ static void assert_conj(std::ostream & out, unsynch_mpq_manager & m, char const
     out << "))\n";
 }
 
+#if 0
 static bool mk_interval(im_default_config & cfg, interval & a, bool l_inf, bool l_open, int l_val, bool u_inf, bool u_open, int u_val) {
     if (!l_inf && !u_inf) {
         if (l_val > u_val)
@@ -121,6 +122,7 @@ static bool mk_interval(im_default_config & cfg, interval & a, bool l_inf, bool
     
     return true;
 }
+#endif
 
 static void mk_random_interval(im_default_config & cfg, interval & a, unsigned magnitude) {
     switch (rand()%3) {
@@ -381,6 +383,7 @@ static void tst_div(unsigned N, unsigned magnitude) {
 
 #include"im_float_config.h"
 
+#if 0
 static void tst_float() {
     unsynch_mpq_manager   qm;
     mpf_manager           fm;
@@ -414,6 +417,7 @@ static void tst_float() {
 
     del_f_interval(ifc, a); del_f_interval(ifc, b); del_f_interval(ifc, c);
 }
+#endif
 
 void tst_pi() {
     unsynch_mpq_manager                 nm;     
@@ -429,6 +433,7 @@ void tst_pi() {
     del_interval(imc, r);
 }
 
+#if 0
 static void tst_pi_float() {
     std::cout << "pi float...\n";
     unsynch_mpq_manager   qm;
@@ -446,6 +451,7 @@ static void tst_pi_float() {
     }
     del_f_interval(ifc, r);
 }
+#endif 
 
 #define NUM_TESTS 1000
 #define SMALL_MAG 3

src/test/mpff.cpp

@@ -533,10 +533,12 @@ static void tst_limits(unsigned prec) {
     SASSERT(!m.is_minus_epsilon(a));
 }
 
+#if 0
 static void tst_add_corner(unsigned prec) {
     mpff_manager m(prec);
     scoped_mpff a(m), b(m);
 }
+#endif
 
 static void tst_decimal(int64 n, uint64 d, bool to_plus_inf, unsigned prec, char const * expected, unsigned decimal_places = UINT_MAX) {
     mpff_manager m(prec);

src/test/mpq.cpp

@@ -55,6 +55,7 @@ static void tst1() {
     m.del(v3);
 }
 
+#if 0
 static void mk_random_num_str(unsigned buffer_sz, char * buffer) {
     unsigned div_pos;
     unsigned sz = (rand() % (buffer_sz-2)) + 1;
@@ -80,6 +81,7 @@ static void mk_random_num_str(unsigned buffer_sz, char * buffer) {
     }
     buffer[sz-1] = 0;
 }
+#endif
 
 static void bug1() {
     synch_mpq_manager m;

src/test/mpz.cpp

@@ -77,6 +77,7 @@ static void tst2b() {
     m.del(v3);
 }
 
+#if 0
 static void mk_random_num_str(unsigned buffer_sz, char * buffer) {
     unsigned sz = (rand() % (buffer_sz-2)) + 1;
     SASSERT(sz < buffer_sz);
@@ -87,6 +88,7 @@ static void mk_random_num_str(unsigned buffer_sz, char * buffer) {
         buffer[0] = '-';
     buffer[sz-1] = 0;
 }
+#endif
 
 static void bug1() {
     synch_mpz_manager m;

src/test/polynomial.cpp

@@ -704,6 +704,7 @@ static void tst_psc(polynomial_ref const & p, polynomial_ref const & q, polynomi
     }
 }
 
+#if 0
 static void tst_psc_perf(polynomial_ref const & p, polynomial_ref const & q, polynomial::var x) {
     polynomial::manager & m = p.m();
     polynomial_ref_vector S(m);
@@ -716,6 +717,7 @@ static void tst_psc_perf(polynomial_ref const & p, polynomial_ref const & q, pol
         std::cout << "S_" << i << ": " << m.size(S.get(i)) << std::endl; // polynomial_ref(S.get(i), m) << std::endl;
     }
 }
+#endif
 
 static void tst_psc() {
     polynomial::numeral_manager nm;
@@ -1258,6 +1260,7 @@ static void tst_translate() {
                   );
 }
 
+#if 0
 static void tst_p25() {
     unsynch_mpq_manager qm;
     polynomial::manager m(qm);
@@ -1279,6 +1282,7 @@ static void tst_p25() {
     p = (x0 + x1 + x2 + x3 + x4 + x5 + x6)^25;
     std::cout << "size(p): " << size(p) << "\n";
 }
+#endif
 
 static void tst_mm() {
     unsynch_mpq_manager qm;
@@ -1571,6 +1575,7 @@ static void tst_gcd2() {
     tst_gcd(p, p_prime, x1^4);
 }
 
+#if 0
 static void tst_gcd3() {
     enable_trace("polynomial_gcd");
     enable_trace("polynomial_gcd_detail");
@@ -1620,6 +1625,7 @@ static void tst_gcd4() {
         (1000000*x + 1)*(333333333*x + 1)*(77777777*x + 1)*(11111111*x + 1)*(x + 128384747)*(x + 82837437)*(x + 22848481);
     tst_gcd(p, derivative(p, 0), (x + 3)^9);
 }
+#endif 
 
 static void tst_newton_interpolation() {
     // enable_trace("newton");

src/test/polynomial_factorization.cpp

@@ -172,6 +172,7 @@ int random_polynomial[20][2][11] = {
     }
 };
 
+#if 0
 static void tst_square_free_finite_1() {
     polynomial::numeral_manager nm;
     polynomial::manager pm(nm);
@@ -616,6 +617,7 @@ static void tst_factor_square_free_univariate_3() {
         
     upm.reset(deg70_u);
 }
+#endif
 
 void tst_factor_swinnerton_dyer_big(unsigned max) {
     polynomial::numeral_manager nm;

src/test/quant_solve.cpp

@@ -44,6 +44,7 @@ static void validate_quant_solution(ast_manager& m, expr* fml, expr* guard, qe::
 }
 
 
+#if 0
 static void validate_quant_solutions(app* x, expr* fml, expr_ref_vector& guards) {
     return;
     // quant_elim option got removed...
@@ -73,7 +74,7 @@ static void validate_quant_solutions(app* x, expr* fml, expr_ref_vector& guards)
         fatal_error(0);
     }
 }
-
+#endif
 
 
 static void test_quant_solver(ast_manager& m, unsigned sz, app*const* xs, expr* fml) {

src/test/trigo.cpp

@@ -116,6 +116,7 @@ static void tst_float_sine(std::ostream & out, unsigned N, unsigned k) {
    }
 }
 
+#if 0
 static void tst_mpf_bug() {
     mpf_manager fm;
     scoped_mpf a(fm), b(fm), c(fm);
@@ -126,6 +127,7 @@ static void tst_mpf_bug() {
     fm.mul(MPF_ROUND_TOWARD_NEGATIVE, a, b, c);
     std::cout << "c: " << fm.to_double(c) << "\n";
 }
+#endif
 
 static void tst_e(std::ostream & out) {
     unsynch_mpq_manager                 nm;     

src/test/upolynomial.cpp

@@ -726,6 +726,7 @@ static void tst_sturm2() {
     um.display(std::cout, seq2);
 }
 
+#if 0
 static void tst_isolate_roots2() {
     polynomial::numeral_manager nm;
     polynomial::manager m(nm);
@@ -793,6 +794,7 @@ static void tst_gcd2() {
     }
     um.display(std::cout, _p_sqf.size(), _p_sqf.c_ptr()); std::cout << "\n";
 }
+#endif 
 
 static void tst_isolate_roots5() {
     polynomial::numeral_manager nm;

src/util/mpz.cpp

@@ -1713,18 +1713,6 @@ void mpz_manager<SYNCH>::machine_div2k(mpz & a, unsigned k) {
 #endif    
 }
 
-#ifndef _MP_GMP
-static void display_bits(std::ostream & out, digit_t a) {
-    for (unsigned i = 0; i < sizeof(digit_t) * 8; i++) {
-        if (a % 2 == 0)
-            out << "0";
-        else
-            out << "1";
-        a /= 2;
-    }
-}
-#endif
-
 template<bool SYNCH>
 void mpz_manager<SYNCH>::mul2k(mpz & a, unsigned k) {
     if (k == 0 || is_zero(a))