diff --git a/src/tightdb/array.cpp b/src/tightdb/array.cpp
index fa6b1e1d92e..78aed84fe1d 100644
--- a/src/tightdb/array.cpp
+++ b/src/tightdb/array.cpp
@@ -173,7 +173,7 @@ void Array::Preset(size_t bitwidth, size_t count)
 
 void Array::Preset(int64_t min, int64_t max, size_t count)
 {
-    size_t w = std::max(BitWidth(max), BitWidth(min));
+    size_t w = ::max(BitWidth(max), BitWidth(min));
     Preset(w, count);
 }
 
@@ -1531,7 +1531,7 @@ template <size_t w> void Array::sort()
 
     size_t lo = 0;
     size_t hi = m_len - 1;
-    std::vector<size_t> count;
+    vector<size_t> count;
     int64_t min;
     int64_t max;
     bool b = false;
@@ -1669,9 +1669,9 @@ template<size_t w> void Array::QuickSort(size_t lo, size_t hi)
     if (i < (int)hi) QuickSort(i, hi);
 }
 
-std::vector<int64_t> Array::ToVector() const
+vector<int64_t> Array::ToVector() const
 {
-    std::vector<int64_t> v;
+    vector<int64_t> v;
     const size_t count = size();
     for (size_t t = 0; t < count; ++t)
         v.push_back(Get(t));
@@ -1694,12 +1694,12 @@ bool Array::Compare(const Array& c) const
 
 void Array::Print() const
 {
-    std::cout << std::hex << GetRef() << std::dec << ": (" << size() << ") ";
+    cout << hex << GetRef() << dec << ": (" << size() << ") ";
     for (size_t i = 0; i < size(); ++i) {
-        if (i) std::cout << ", ";
-        std::cout << Get(i);
+        if (i) cout << ", ";
+        cout << Get(i);
     }
-    std::cout << "\n";
+    cout << "\n";
 }
 
 void Array::Verify() const
@@ -1714,25 +1714,25 @@ void Array::Verify() const
     TIGHTDB_ASSERT(ref_in_parent == (IsValid() ? m_ref : 0));
 }
 
-void Array::ToDot(std::ostream& out, const char* title) const
+void Array::ToDot(ostream& out, StringData title) const
 {
     const size_t ref = GetRef();
 
-    if (title) {
-        out << "subgraph cluster_" << ref << " {" << std::endl;
-        out << " label = \"" << title << "\";" << std::endl;
-        out << " color = white;" << std::endl;
+    if (0 < title.size()) {
+        out << "subgraph cluster_" << ref << " {" << endl;
+        out << " label = \"" << title << "\";" << endl;
+        out << " color = white;" << endl;
     }
 
-    out << "n" << std::hex << ref << std::dec << "[shape=none,label=<";
-    out << "<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\" CELLPADDING=\"4\"><TR>" << std::endl;
+    out << "n" << hex << ref << dec << "[shape=none,label=<";
+    out << "<TABLE BORDER=\"0\" CELLBORDER=\"1\" CELLSPACING=\"0\" CELLPADDING=\"4\"><TR>" << endl;
 
     // Header
     out << "<TD BGCOLOR=\"lightgrey\"><FONT POINT-SIZE=\"7\"> ";
-    out << "0x" << std::hex << ref << std::dec << "<BR/>";
+    out << "0x" << hex << ref << dec << "<BR/>";
     if (m_isNode) out << "IsNode<BR/>";
     if (m_hasRefs) out << "HasRefs<BR/>";
-    out << "</FONT></TD>" << std::endl;
+    out << "</FONT></TD>" << endl;
 
     // Values
     for (size_t i = 0; i < m_len; ++i) {
@@ -1744,23 +1744,23 @@ void Array::ToDot(std::ostream& out, const char* title) const
             else out << "<TD PORT=\"" << i << "\">";
         }
         else out << "<TD>" << v;
-        out << "</TD>" << std::endl;
+        out << "</TD>" << endl;
     }
 
-    out << "</TR></TABLE>>];" << std::endl;
-    if (title) out << "}" << std::endl;
+    out << "</TR></TABLE>>];" << endl;
+    if (0 < title.size()) out << "}" << endl;
 
     if (m_hasRefs) {
         for (size_t i = 0; i < m_len; ++i) {
             const int64_t target = Get(i);
             if (target == 0 || target & 0x1) continue; // zero-refs and refs that are not 64-aligned do not point to sub-trees
 
-            out << "n" << std::hex << ref << std::dec << ":" << i;
-            out << " -> n" << std::hex << target << std::dec << std::endl;
+            out << "n" << hex << ref << dec << ":" << i;
+            out << " -> n" << hex << target << dec << endl;
         }
     }
 
-    out << std::endl;
+    out << endl;
 }
 
 void Array::Stats(MemStats& stats) const
diff --git a/src/tightdb/array.hpp b/src/tightdb/array.hpp
index 832b0c0f42b..1bbae908ba3 100644
--- a/src/tightdb/array.hpp
+++ b/src/tightdb/array.hpp
@@ -397,7 +397,7 @@ class Array: public ArrayParent {
 #ifdef TIGHTDB_DEBUG
     void Print() const;
     void Verify() const;
-    void ToDot(std::ostream& out, const char* title=NULL) const;
+    void ToDot(std::ostream& out, StringData title = StringData()) const;
     void Stats(MemStats& stats) const;
 #endif // TIGHTDB_DEBUG
 
diff --git a/src/tightdb/array_binary.cpp b/src/tightdb/array_binary.cpp
index 564200b8f5e..3598ad740f7 100644
--- a/src/tightdb/array_binary.cpp
+++ b/src/tightdb/array_binary.cpp
@@ -154,9 +154,9 @@ void ArrayBinary::ToDot(ostream& out, const char* title) const
     if (title) out << "\\n'" << title << "'";
     out << "\";" << endl;
 
-    Array::ToDot(out, "binary_top");
-    m_offsets.ToDot(out, "offsets");
-    m_blob.ToDot(out, "blob");
+//    Array::ToDot(out, "binary_top");
+//    m_offsets.ToDot(out, "offsets");
+//    m_blob.ToDot(out, "blob");
 
     out << "}" << endl;
 }
diff --git a/src/tightdb/array_string_long.cpp b/src/tightdb/array_string_long.cpp
index 24a0049571d..725f5a428fa 100644
--- a/src/tightdb/array_string_long.cpp
+++ b/src/tightdb/array_string_long.cpp
@@ -155,9 +155,9 @@ void ArrayStringLong::ToDot(ostream& out, const char* title) const
     if (title) out << "\\n'" << title << "'";
     out << "\";" << endl;
 
-    Array::ToDot(out, "stringlong_top");
-    m_offsets.ToDot(out, "offsets");
-    m_blob.ToDot(out, "blob");
+//    Array::ToDot(out, "stringlong_top");
+//    m_offsets.ToDot(out, "offsets");
+//    m_blob.ToDot(out, "blob");
 
     out << "}" << endl;
 }
diff --git a/src/tightdb/column.cpp b/src/tightdb/column.cpp
index e7de05d1056..5e159bafaa3 100644
--- a/src/tightdb/column.cpp
+++ b/src/tightdb/column.cpp
@@ -855,11 +855,11 @@ void ColumnBase::ArrayToDot(std::ostream& out, const Array& array) const
         out << " label = \"Node\";" << std::endl;
 
         array.ToDot(out);
-        offsets.ToDot(out, "offsets");
+//        offsets.ToDot(out, "offsets");
 
         out << "}" << std::endl;
 
-        refs.ToDot(out, "refs");
+//        refs.ToDot(out, "refs");
 
         const size_t count = refs.size();
         for (size_t i = 0; i < count; ++i) {
diff --git a/src/tightdb/column_mixed.cpp b/src/tightdb/column_mixed.cpp
index fe5668575ae..2d182f37a1c 100644
--- a/src/tightdb/column_mixed.cpp
+++ b/src/tightdb/column_mixed.cpp
@@ -324,7 +324,7 @@ void ColumnMixed::ToDot(std::ostream& out, StringData title) const
     if (0 < title.size()) out << "\\n'" << title << "'";
     out << "\";" << std::endl;
 
-    m_array->ToDot(out, "mixed_top");
+//    m_array->ToDot(out, "mixed_top");
 
     // Write sub-tables
     const size_t count = Size();
@@ -335,11 +335,11 @@ void ColumnMixed::ToDot(std::ostream& out, StringData title) const
         subtable->to_dot(out);
     }
 
-    m_types->ToDot(out, "types");
-    m_refs->ToDot(out, "refs");
+//    m_types->ToDot(out, "types");
+//    m_refs->ToDot(out, "refs");
 
     if (m_array->size() > 2) {
-        m_data->ToDot(out, "data");
+//        m_data->ToDot(out, "data");
     }
 
     out << "}" << std::endl;
diff --git a/src/tightdb/column_string_enum.cpp b/src/tightdb/column_string_enum.cpp
index 3cdddbfce9a..77fa4be99f7 100644
--- a/src/tightdb/column_string_enum.cpp
+++ b/src/tightdb/column_string_enum.cpp
@@ -256,8 +256,8 @@ void ColumnStringEnum::ToDot(std::ostream& out, StringData title) const
     if (0 < title.size()) out << "\\n'" << title << "'";
     out << "\";" << std::endl;
 
-    m_keys.ToDot(out, "keys");
-    Column::ToDot(out, "values");
+//    m_keys.ToDot(out, "keys");
+//    Column::ToDot(out, "values");
 
     out << "}" << std::endl;
 }
diff --git a/src/tightdb/group.cpp b/src/tightdb/group.cpp
index 2bbfed5991e..4d50ccd7401 100644
--- a/src/tightdb/group.cpp
+++ b/src/tightdb/group.cpp
@@ -665,9 +665,9 @@ void Group::to_dot(std::ostream& out) const
     out << "subgraph cluster_group {" << endl;
     out << " label = \"Group\";" << endl;
 
-    m_top.ToDot(out, "group_top");
-    m_tableNames.ToDot(out, "table_names");
-    m_tables.ToDot(out, "tables");
+//    m_top.ToDot(out, "group_top");
+//    m_tableNames.ToDot(out, "table_names");
+//    m_tables.ToDot(out, "tables");
 
     // Tables
     for (size_t i = 0; i < m_tables.size(); ++i) {
diff --git a/src/tightdb/index_string.cpp b/src/tightdb/index_string.cpp
index fb1f937013b..6e86e8ec32b 100644
--- a/src/tightdb/index_string.cpp
+++ b/src/tightdb/index_string.cpp
@@ -677,11 +677,11 @@ void StringIndex::ArrayToDot(std::ostream& out, const Array& array) const
         }
 
         array.ToDot(out);
-        KeysToDot(out, offsets, "keys");
+//        KeysToDot(out, offsets, "keys");
 
         out << "}" << std::endl;
 
-        refs.ToDot(out, "refs");
+//        refs.ToDot(out, "refs");
 
         const size_t count = refs.size();
         for (size_t i = 0; i < count; ++i) {
diff --git a/src/tightdb/mixed.hpp b/src/tightdb/mixed.hpp
index 0304553fd70..81d66280c1c 100644
--- a/src/tightdb/mixed.hpp
+++ b/src/tightdb/mixed.hpp
@@ -110,8 +110,10 @@ class Mixed {
 
     // These are shortcuts for Mixed(StringData(c_str)), and are
     // needed to avoid unwanted implicit conversion of char* to bool.
-    Mixed(      char* c_str) TIGHTDB_NOEXCEPT { set_string(c_str); }
-    Mixed(const char* c_str) TIGHTDB_NOEXCEPT { set_string(c_str); }
+//    Mixed(      char* c_str) TIGHTDB_NOEXCEPT { set_string(c_str); }
+//    Mixed(const char* c_str) TIGHTDB_NOEXCEPT { set_string(c_str); }
+
+    template<class T> Mixed(T*) { typename T::viggo x; }
 
     struct subtable_tag {};
     Mixed(subtable_tag) TIGHTDB_NOEXCEPT: m_type(type_Table) {}
@@ -189,6 +191,7 @@ bool operator==(Wrap<Mixed>, StringData) TIGHTDB_NOEXCEPT;
 bool operator!=(Wrap<Mixed>, StringData) TIGHTDB_NOEXCEPT;
 bool operator==(StringData, Wrap<Mixed>) TIGHTDB_NOEXCEPT;
 bool operator!=(StringData, Wrap<Mixed>) TIGHTDB_NOEXCEPT;
+/*
 bool operator==(Wrap<Mixed>, const char* c_str) TIGHTDB_NOEXCEPT;
 bool operator!=(Wrap<Mixed>, const char* c_str) TIGHTDB_NOEXCEPT;
 bool operator==(const char* c_str, Wrap<Mixed>) TIGHTDB_NOEXCEPT;
@@ -197,6 +200,7 @@ bool operator==(Wrap<Mixed>, char* c_str) TIGHTDB_NOEXCEPT;
 bool operator!=(Wrap<Mixed>, char* c_str) TIGHTDB_NOEXCEPT;
 bool operator==(char* c_str, Wrap<Mixed>) TIGHTDB_NOEXCEPT;
 bool operator!=(char* c_str, Wrap<Mixed>) TIGHTDB_NOEXCEPT;
+*/
 
 // Compare mixed with binary data
 bool operator==(Wrap<Mixed>, BinaryData) TIGHTDB_NOEXCEPT;
@@ -493,6 +497,7 @@ inline bool operator!=(StringData a, Wrap<Mixed> b) TIGHTDB_NOEXCEPT
     return type_String != Mixed(b).get_type() || a != Mixed(b).get_string();
 }
 
+/*
 inline bool operator==(Wrap<Mixed> a, const char* b) TIGHTDB_NOEXCEPT
 {
     return a == StringData(b);
@@ -532,6 +537,7 @@ inline bool operator!=(char* a, Wrap<Mixed> b) TIGHTDB_NOEXCEPT
 {
     return StringData(a) != b;
 }
+*/
 
 
 // Compare mixed with binary data
diff --git a/src/tightdb/spec.cpp b/src/tightdb/spec.cpp
index 33ac45fc927..6b1e93e1deb 100644
--- a/src/tightdb/spec.cpp
+++ b/src/tightdb/spec.cpp
@@ -433,7 +433,7 @@ void Spec::Verify() const
     TIGHTDB_ASSERT(column_count <= m_spec.size());
 }
 
-void Spec::to_dot(std::ostream& out, const char*) const
+void Spec::to_dot(std::ostream& out, StringData) const
 {
     const size_t ref = m_specSet.GetRef();
 
diff --git a/src/tightdb/spec.hpp b/src/tightdb/spec.hpp
index 7f5626687af..3fac6dea170 100644
--- a/src/tightdb/spec.hpp
+++ b/src/tightdb/spec.hpp
@@ -79,7 +79,7 @@ class Spec {
 
 #ifdef TIGHTDB_DEBUG
     void Verify() const; // Must be upper case to avoid conflict with macro in ObjC
-    void to_dot(std::ostream& out, const char* title=NULL) const;
+    void to_dot(std::ostream& out, StringData title = StringData()) const;
 #endif // TIGHTDB_DEBUG
 
 private:
diff --git a/src/tightdb/string_data.hpp b/src/tightdb/string_data.hpp
index 22b622816a9..57ba08844df 100644
--- a/src/tightdb/string_data.hpp
+++ b/src/tightdb/string_data.hpp
@@ -36,7 +36,8 @@ namespace tightdb {
 /// other way attempt to manage the lifetime of it.
 ///
 /// \sa BinaryData
-struct StringData {
+class StringData {
+public:
     StringData() TIGHTDB_NOEXCEPT: m_data(0), m_size(0) {}
     StringData(const char* d, std::size_t s) TIGHTDB_NOEXCEPT: m_data(d), m_size(s) {}
 
diff --git a/src/tightdb/table.cpp b/src/tightdb/table.cpp
index ebed6bb1688..bc397739541 100644
--- a/src/tightdb/table.cpp
+++ b/src/tightdb/table.cpp
@@ -2644,7 +2644,7 @@ void Table::to_dot(std::ostream& out, StringData title) const
         out << " label = \"TopLevelTable";
         if (0 < title.size()) out << "\\n'" << title << "'";
         out << "\";" << endl;
-        m_top.ToDot(out, "table_top");
+//        m_top.ToDot(out, "table_top");
         const Spec& specset = get_spec();
         specset.to_dot(out);
     }
@@ -2662,7 +2662,7 @@ void Table::to_dot(std::ostream& out, StringData title) const
 
 void Table::ToDotInternal(std::ostream& out) const
 {
-    m_columns.ToDot(out, "columns");
+//    m_columns.ToDot(out, "columns");
 
     // Columns
     const size_t column_count = get_column_count();