Index: libs/regex/src/c_regex_traits.cpp
===================================================================
RCS file: /cvsroot/boost/boost/libs/regex/src/c_regex_traits.cpp,v
retrieving revision 1.36
diff -u -p -r1.36 c_regex_traits.cpp
--- libs/regex/src/c_regex_traits.cpp	21 Feb 2003 12:43:49 -0000	1.36
+++ libs/regex/src/c_regex_traits.cpp	12 Mar 2003 12:21:24 -0000
@@ -514,9 +514,9 @@ void BOOST_REGEX_CALL c_traits_base::do_
       if(std::isxdigit(i))
          class_map[i] |= char_class_xdigit;
    }
-   class_map['_'] |= char_class_underscore;
-   class_map[' '] |= char_class_blank;
-   class_map['\t'] |= char_class_blank;
+   class_map[(unsigned char)'_'] |= char_class_underscore;
+   class_map[(unsigned char)' '] |= char_class_blank;
+   class_map[(unsigned char)'\t'] |= char_class_blank;
    for(i = 0; i < map_size; ++i)
    {
       lower_case_map[i] = (char)std::tolower(i);
Index: libs/regex/src/cpp_regex_traits.cpp
===================================================================
RCS file: /cvsroot/boost/boost/libs/regex/src/cpp_regex_traits.cpp,v
retrieving revision 1.30
diff -u -p -r1.30 cpp_regex_traits.cpp
--- libs/regex/src/cpp_regex_traits.cpp	16 Sep 2002 11:54:41 -0000	1.30
+++ libs/regex/src/cpp_regex_traits.cpp	12 Mar 2003 12:21:24 -0000
@@ -241,7 +241,7 @@ message_data<char>::message_data(const s
 #endif
       for(std::size_t j = 0; j < s.size(); ++j)
       {
-         syntax_map[s[j]] = (unsigned char)(i);
+         syntax_map[(unsigned char)s[j]] = (unsigned char)(i);
       }
    }