diff -r d41dc551a326 -r a61f8f58f612 stage4/generate_iec/generate_iec.cc
--- a/stage4/generate_iec/generate_iec.cc	Wed May 11 19:38:31 2016 +0100
+++ b/stage4/generate_iec/generate_iec.cc	Fri May 13 12:18:50 2016 +0100
@@ -392,48 +392,50 @@
 /***********************************/
 /* B 1.3.1 - Elementary Data Types */
 /***********************************/
-void *visit(time_type_name_c *symbol)        {s4o.print("TIME");        return NULL;}
-void *visit(bool_type_name_c *symbol)        {s4o.print("BOOL");        return NULL;}
-void *visit(sint_type_name_c *symbol)        {s4o.print("SINT");        return NULL;}
-void *visit(int_type_name_c *symbol)         {s4o.print("INT");         return NULL;}
-void *visit(dint_type_name_c *symbol)        {s4o.print("DINT");        return NULL;}
-void *visit(lint_type_name_c *symbol)        {s4o.print("LINT");        return NULL;}
-void *visit(usint_type_name_c *symbol)       {s4o.print("USINT");       return NULL;}
-void *visit(uint_type_name_c *symbol)        {s4o.print("UINT");        return NULL;}
-void *visit(udint_type_name_c *symbol)       {s4o.print("UDINT");       return NULL;}
-void *visit(ulint_type_name_c *symbol)       {s4o.print("ULINT");       return NULL;}
-void *visit(real_type_name_c *symbol)        {s4o.print("REAL");        return NULL;}
-void *visit(lreal_type_name_c *symbol)       {s4o.print("LREAL");       return NULL;}
-void *visit(date_type_name_c *symbol)        {s4o.print("DATE");        return NULL;}
-void *visit(tod_type_name_c *symbol)         {s4o.print("TOD");         return NULL;}
-void *visit(dt_type_name_c *symbol)          {s4o.print("DT");          return NULL;}
-void *visit(byte_type_name_c *symbol)        {s4o.print("BYTE");        return NULL;}
-void *visit(word_type_name_c *symbol)        {s4o.print("WORD");        return NULL;}
-void *visit(lword_type_name_c *symbol)       {s4o.print("LWORD");       return NULL;}
-void *visit(dword_type_name_c *symbol)       {s4o.print("DWORD");       return NULL;}
-void *visit(string_type_name_c *symbol)      {s4o.print("STRING");      return NULL;}
-void *visit(wstring_type_name_c *symbol)     {s4o.print("WSTRING");     return NULL;}
-
-void *visit(safetime_type_name_c *symbol)    {s4o.print("SAFETIME");    return NULL;}
-void *visit(safebool_type_name_c *symbol)    {s4o.print("SAFEBOOL");    return NULL;}
-void *visit(safesint_type_name_c *symbol)    {s4o.print("SAFESINT");    return NULL;}
-void *visit(safeint_type_name_c *symbol)     {s4o.print("SAFEINT");     return NULL;}
-void *visit(safedint_type_name_c *symbol)    {s4o.print("SAFEDINT");    return NULL;}
-void *visit(safelint_type_name_c *symbol)    {s4o.print("SAFELINT");    return NULL;}
-void *visit(safeusint_type_name_c *symbol)   {s4o.print("SAFEUSINT");   return NULL;}
-void *visit(safeuint_type_name_c *symbol)    {s4o.print("SAFEUINT");    return NULL;}
-void *visit(safeudint_type_name_c *symbol)   {s4o.print("SAFEUDINT");   return NULL;}
-void *visit(safeulint_type_name_c *symbol)   {s4o.print("SAFEULINT");   return NULL;}
-void *visit(safereal_type_name_c *symbol)    {s4o.print("SAFEREAL");    return NULL;}
-void *visit(safelreal_type_name_c *symbol)   {s4o.print("SAFELREAL");   return NULL;}
-void *visit(safedate_type_name_c *symbol)    {s4o.print("SAFEDATE");    return NULL;}
-void *visit(safetod_type_name_c *symbol)     {s4o.print("SAFETOD");     return NULL;}
-void *visit(safedt_type_name_c *symbol)      {s4o.print("SAFEDT");      return NULL;}
-void *visit(safebyte_type_name_c *symbol)    {s4o.print("SAFEBYTE");    return NULL;}
-void *visit(safeword_type_name_c *symbol)    {s4o.print("SAFEWORD");    return NULL;}
-void *visit(safelword_type_name_c *symbol)   {s4o.print("SAFELWORD");   return NULL;}
-void *visit(safedword_type_name_c *symbol)   {s4o.print("SAFEDWORD");   return NULL;}
-void *visit(safestring_type_name_c *symbol)  {s4o.print("SAFESTRING");  return NULL;}
+void *visit(       time_type_name_c *symbol) {s4o.print("TIME");        return NULL;}
+void *visit(       bool_type_name_c *symbol) {s4o.print("BOOL");        return NULL;}
+void *visit(       sint_type_name_c *symbol) {s4o.print("SINT");        return NULL;}
+void *visit(        int_type_name_c *symbol) {s4o.print("INT");         return NULL;}
+void *visit(       dint_type_name_c *symbol) {s4o.print("DINT");        return NULL;}
+void *visit(       lint_type_name_c *symbol) {s4o.print("LINT");        return NULL;}
+void *visit(      usint_type_name_c *symbol) {s4o.print("USINT");       return NULL;}
+void *visit(       uint_type_name_c *symbol) {s4o.print("UINT");        return NULL;}
+void *visit(      udint_type_name_c *symbol) {s4o.print("UDINT");       return NULL;}
+void *visit(      ulint_type_name_c *symbol) {s4o.print("ULINT");       return NULL;}
+void *visit(       real_type_name_c *symbol) {s4o.print("REAL");        return NULL;}
+void *visit(      lreal_type_name_c *symbol) {s4o.print("LREAL");       return NULL;}
+void *visit(       date_type_name_c *symbol) {s4o.print("DATE");        return NULL;}
+void *visit(        tod_type_name_c *symbol) {s4o.print("TOD");         return NULL;}
+void *visit(         dt_type_name_c *symbol) {s4o.print("DT");          return NULL;}
+void *visit(       byte_type_name_c *symbol) {s4o.print("BYTE");        return NULL;}
+void *visit(       word_type_name_c *symbol) {s4o.print("WORD");        return NULL;}
+void *visit(      lword_type_name_c *symbol) {s4o.print("LWORD");       return NULL;}
+void *visit(      dword_type_name_c *symbol) {s4o.print("DWORD");       return NULL;}
+void *visit(     string_type_name_c *symbol) {s4o.print("STRING");      return NULL;}
+void *visit(    wstring_type_name_c *symbol) {s4o.print("WSTRING");     return NULL;}
+
+void *visit(                 void_c *symbol) {s4o.print("VOID");        return NULL;} /* a non-standard extension! */
+
+void *visit(   safetime_type_name_c *symbol) {s4o.print("SAFETIME");    return NULL;}
+void *visit(   safebool_type_name_c *symbol) {s4o.print("SAFEBOOL");    return NULL;}
+void *visit(   safesint_type_name_c *symbol) {s4o.print("SAFESINT");    return NULL;}
+void *visit(    safeint_type_name_c *symbol) {s4o.print("SAFEINT");     return NULL;}
+void *visit(   safedint_type_name_c *symbol) {s4o.print("SAFEDINT");    return NULL;}
+void *visit(   safelint_type_name_c *symbol) {s4o.print("SAFELINT");    return NULL;}
+void *visit(  safeusint_type_name_c *symbol) {s4o.print("SAFEUSINT");   return NULL;}
+void *visit(   safeuint_type_name_c *symbol) {s4o.print("SAFEUINT");    return NULL;}
+void *visit(  safeudint_type_name_c *symbol) {s4o.print("SAFEUDINT");   return NULL;}
+void *visit(  safeulint_type_name_c *symbol) {s4o.print("SAFEULINT");   return NULL;}
+void *visit(   safereal_type_name_c *symbol) {s4o.print("SAFEREAL");    return NULL;}
+void *visit(  safelreal_type_name_c *symbol) {s4o.print("SAFELREAL");   return NULL;}
+void *visit(   safedate_type_name_c *symbol) {s4o.print("SAFEDATE");    return NULL;}
+void *visit(    safetod_type_name_c *symbol) {s4o.print("SAFETOD");     return NULL;}
+void *visit(     safedt_type_name_c *symbol) {s4o.print("SAFEDT");      return NULL;}
+void *visit(   safebyte_type_name_c *symbol) {s4o.print("SAFEBYTE");    return NULL;}
+void *visit(   safeword_type_name_c *symbol) {s4o.print("SAFEWORD");    return NULL;}
+void *visit(  safelword_type_name_c *symbol) {s4o.print("SAFELWORD");   return NULL;}
+void *visit(  safedword_type_name_c *symbol) {s4o.print("SAFEDWORD");   return NULL;}
+void *visit( safestring_type_name_c *symbol) {s4o.print("SAFESTRING");  return NULL;}
 void *visit(safewstring_type_name_c *symbol) {s4o.print("SAFEWSTRING"); return NULL;}
 
 /********************************/