diff --git a/src/api/c++/z3++.h b/src/api/c++/z3++.h
index 2200874d3..f55ece034 100644
--- a/src/api/c++/z3++.h
+++ b/src/api/c++/z3++.h
@@ -140,18 +140,17 @@ namespace z3 {
     class context {
         bool       m_enable_exceptions;
         Z3_context m_ctx;
-        static void Z3_API error_handler(Z3_context /*c*/, Z3_error_code /*e*/) { /* do nothing */ }
         void init(config & c) {
             m_ctx = Z3_mk_context_rc(c);
             m_enable_exceptions = true;
-            Z3_set_error_handler(m_ctx, error_handler);
+            Z3_set_error_handler(m_ctx, 0);
             Z3_set_ast_print_mode(m_ctx, Z3_PRINT_SMTLIB2_COMPLIANT);
         }
 
         void init_interp(config & c) {
             m_ctx = Z3_mk_interpolation_context(c);
             m_enable_exceptions = true;
-            Z3_set_error_handler(m_ctx, error_handler);
+            Z3_set_error_handler(m_ctx, 0);
             Z3_set_ast_print_mode(m_ctx, Z3_PRINT_SMTLIB2_COMPLIANT);
         }
 
diff --git a/src/math/automata/symbolic_automata_def.h b/src/math/automata/symbolic_automata_def.h
index 3be6a1da0..be38a60bc 100644
--- a/src/math/automata/symbolic_automata_def.h
+++ b/src/math/automata/symbolic_automata_def.h
@@ -24,6 +24,7 @@ Revision History:
 
 #include "math/automata/symbolic_automata.h"
 #include "util/hashtable.h"
+#include "util/vector.h"
 
 
 
@@ -311,7 +312,7 @@ symbolic_automata<T, M>::mk_determinstic_param(automaton_t& a, bool flip_accepta
     s2id.insert(set, p_state_id++);               // the index to the initial state is 0
     id2s.push_back(set);
     
-    svector<uint_set> todo; //States to visit
+    ::vector<uint_set> todo; //States to visit
     todo.push_back(set);
     
     uint_set state;
diff --git a/src/sat/sat_solver.cpp b/src/sat/sat_solver.cpp
index 8782cb462..03c17aaf0 100644
--- a/src/sat/sat_solver.cpp
+++ b/src/sat/sat_solver.cpp
@@ -726,7 +726,7 @@ namespace sat {
         SASSERT(scope_lvl() == 0);
         if (m_config.m_dimacs_display) {
             display_dimacs(std::cout);
-            for (unsigned i = 0; i < num_lits; ++lits) {
+            for (unsigned i = 0; i < num_lits; ++i) {
                 std::cout << dimacs_lit(lits[i]) << " 0\n";
             }
             return l_undef;
diff --git a/src/util/scoped_ptr_vector.h b/src/util/scoped_ptr_vector.h
index a9ef92766..0bd0fd47e 100644
--- a/src/util/scoped_ptr_vector.h
+++ b/src/util/scoped_ptr_vector.h
@@ -42,7 +42,7 @@ public:
     bool empty() const { return m_vector.empty(); }
     void resize(unsigned sz) { 
         if (sz < m_vector.size()) {
-            for (unsigned i = m_vector.size(); i < sz; i++)
+            for (unsigned i = m_vector.size(); i-- > sz; )
                 dealloc(m_vector[i]);
             m_vector.shrink(sz); 
         }