--- boost\format\feed_args.hpp	2007-12-15 19:49:13.000000000 +0100
+++ boost\format\feed_args.hpp	2012-07-05 19:17:43.000000000 +0100
@@ -92,12 +92,36 @@

     template< class Ch, class Tr, class T> inline
     void put_head( BOOST_IO_STD basic_ostream<Ch, Tr> & os, const group1<T>& x ) {
         os << group_head(x.a1_); // send the first N-1 items, not the last
     }

+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, const char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<int>(x);
+		else
+			os << x ;
+	}
+
+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, const signed char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<int>(x);
+		else
+			os << x ;
+	}
+
+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, const unsigned char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<unsigned int>(x);
+		else
+			os << x ;
+	}
+
     template< class Ch, class Tr, class T> inline
     void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, const T& x ) {
         os << x ;
     }

     template< class Ch, class Tr, class T> inline
@@ -105,12 +129,36 @@
         os << group_last(x.a1_); // this selects the last element
     }

 #ifndef BOOST_NO_OVERLOAD_FOR_NON_CONST
     template< class Ch, class Tr, class T> inline
     void put_head( BOOST_IO_STD basic_ostream<Ch, Tr> &, T& ) {
+    }
+
+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<int>(x);
+		else
+			os << x ;
+	}
+
+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, signed char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<int>(x);
+		else
+			os << x ;
+	}
+
+	template< class Ch, class Tr> inline
+	void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, unsigned char& x ) {
+		if (os.flags() & (std::ios_base::dec | std::ios_base::hex | std::ios_base::oct))
+			os << static_cast<unsigned int>(x);
+		else
+			os << x ;
     }

     template< class Ch, class Tr, class T> inline
     void put_last( BOOST_IO_STD basic_ostream<Ch, Tr> & os, T& x) {
         os << x ;
     }
--- boost\format\parsing.hpp	2009-05-20 20:19:00.000000000 +0100
+++ boost\format\parsing.hpp	2012-07-05 19:19:19.000000000 +0100
@@ -324,12 +324,15 @@
             fpar->fmtstate_.flags_ &= ~std::ios_base::floatfield;
             break;

         case 'C':
         case 'c':
             fpar->truncate_ = 1;
+
+			// Turn off dec flag such that put_last overloads won't up-cast to int.
+            fpar->fmtstate_.flags_ &= ~std::ios_base::dec;
             break;
         case 'S':
         case 's':
             if(precision_set) // handle truncation manually, with own parameter.
                 fpar->truncate_ = fpar->fmtstate_.precision_;
             fpar->fmtstate_.precision_ = 6; // default stream precision.