diff --git a/src/checkclass.cpp b/src/checkclass.cpp
index 822c3c9c6..108e405d8 100644
--- a/src/checkclass.cpp
+++ b/src/checkclass.cpp
@@ -1,6 +1,6 @@
 /*
  * cppcheck - c/c++ syntax checking
- * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
+ * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,6 +26,11 @@
 #include <cstring>
 #include <algorithm>
 
+
+#ifdef __BORLANDC__
+#include <ctype.h>
+#include <mem.h>
+#endif
 //---------------------------------------------------------------------------
 
 CheckClass::CheckClass(const Tokenizer *tokenizer, const Settings &settings, ErrorLogger *errorLogger)
@@ -92,6 +97,7 @@ struct CheckClass::VAR *CheckClass::ClassChecking_GetVarList(const Token *tok1)
         if (varname)
         {
             struct VAR *var = new VAR;
+            memset(var, 0, sizeof(struct VAR));
             var->name = varname;
             var->init = false;
             var->next = varlist;
diff --git a/src/checkmemoryleak.cpp b/src/checkmemoryleak.cpp
index d9ef2f0c2..f44e6f7bd 100644
--- a/src/checkmemoryleak.cpp
+++ b/src/checkmemoryleak.cpp
@@ -1,6 +1,6 @@
 /*
  * cppcheck - c/c++ syntax checking
- * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
+ * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,6 +26,12 @@
 #include <iostream>
 #include <sstream>
 
+#ifdef __BORLANDC__
+#include <mem.h>     // <- memset
+#else
+#include <string.h>
+#endif
+
 
 //---------------------------------------------------------------------------
 
diff --git a/src/preprocessor.cpp b/src/preprocessor.cpp
index 7da73e81d..78cd3597f 100644
--- a/src/preprocessor.cpp
+++ b/src/preprocessor.cpp
@@ -1,6 +1,6 @@
 /*
  * cppcheck - c/c++ syntax checking
- * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
+ * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,6 +25,10 @@
 
 #include <sstream>
 
+#ifdef __BORLANDC__
+#include <ctype>
+#endif
+
 
 Preprocessor::Preprocessor()
 {
@@ -50,7 +54,7 @@ std::string Preprocessor::read(std::istream &istr)
             ++lineno;
 
         // Replace assorted special chars with spaces..
-        if ((ch != '\n') && (std::isspace(ch) || std::iscntrl(ch)))
+        if ((ch != '\n') && (isspace(ch) || iscntrl(ch)))
             ch = ' ';
 
         // Skip spaces after ' ' and after '#'
diff --git a/src/token.cpp b/src/token.cpp
index 33f1ee053..961ac27d4 100644
--- a/src/token.cpp
+++ b/src/token.cpp
@@ -1,6 +1,6 @@
 /*
  * cppcheck - c/c++ syntax checking
- * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
+ * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,6 +22,10 @@
 #include <string>
 #include <iostream>
 
+#ifdef __BORLANDC__
+#include <ctype.h>  // isalpha, isdigit
+#endif
+
 Token::Token() :
         _str(""),
         _cstr(0),
@@ -46,8 +50,8 @@ void Token::str(const char s[])
     _str = s;
     std::free(_cstr);
     _cstr = strdup(s);
-    _isName = bool(_str[0] == '_' || std::isalpha(_str[0]));
-    _isNumber = bool(std::isdigit(_str[0]) != 0);
+    _isName = bool(_str[0] == '_' || isalpha(_str[0]));
+    _isNumber = bool(isdigit(_str[0]) != 0);
     if (_str == "true" || _str == "false")
         _isBoolean = true;
     else
diff --git a/src/tokenize.cpp b/src/tokenize.cpp
index f21084ee1..b936ed11f 100644
--- a/src/tokenize.cpp
+++ b/src/tokenize.cpp
@@ -1,6 +1,6 @@
 /*
  * cppcheck - c/c++ syntax checking
- * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
+ * Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -37,6 +37,12 @@
 #include <stdlib.h>     // <- strtoul
 #include <stdio.h>
 
+#ifdef __BORLANDC__
+#include <ctype.h>
+#include <mem.h>
+#endif
+
+
 //---------------------------------------------------------------------------
 
 Tokenizer::Tokenizer()
@@ -96,10 +102,10 @@ void Tokenizer::Define(const char Name[], const char Value[])
     bool dec = true, hex = true;
     for (int i = 0; Value[i]; i++)
     {
-        if (! std::isdigit(Value[i]))
+        if (! isdigit(Value[i]))
             dec = false;
 
-        if (! std::isxdigit(Value[i]) && (!(i == 1 && Value[i] == 'x')))
+        if (! isxdigit(Value[i]) && (!(i == 1 && Value[i] == 'x')))
             hex = false;
     }
 
@@ -121,6 +127,7 @@ void Tokenizer::Define(const char Name[], const char Value[])
     }
 
     DefineSymbol *NewSym = new DefineSymbol;
+    memset(NewSym, 0, sizeof(DefineSymbol));
     NewSym->name = strdup(Name);
     NewSym->value = strValue;
     NewSym->next = _dsymlist;
@@ -300,21 +307,21 @@ void Tokenizer::tokenizeCode(std::istream &code, const unsigned int FileIndex)
                 {
                     if (State == Space1 || State == Space2)
                     {
-                        if (std::isspace(line[i]))
+                        if (isspace(line[i]))
                             continue;
                         State = (State == Space1) ? Id : Value;
                     }
 
                     else if (State == Id)
                     {
-                        if (std::isspace(line[i]))
+                        if (isspace(line[i]))
                         {
                             strId = CurrentToken;
                             CurrentToken.clear();
                             State = Space2;
                             continue;
                         }
-                        else if (! std::isalnum(line[i]))
+                        else if (! isalnum(line[i]))
                         {
                             break;
                         }
@@ -473,7 +480,7 @@ void Tokenizer::tokenizeCode(std::istream &code, const unsigned int FileIndex)
         }
 
 
-        if (std::isspace(ch) || std::iscntrl(ch))
+        if (isspace(ch) || iscntrl(ch))
         {
             addtoken(CurrentToken.c_str(), lineno, FileIndex);
             CurrentToken.clear();