Index: boost/wave/util/flex_string.hpp
===================================================================
--- boost/wave/util/flex_string.hpp	(revision 84007)
+++ boost/wave/util/flex_string.hpp	(working copy)
@@ -139,13 +139,13 @@
         case 0:
             while (b != e)
             {
-                *b = c; ++b;
-        case 7: *b = c; ++b;
-        case 6: *b = c; ++b;
-        case 5: *b = c; ++b;
-        case 4: *b = c; ++b;
-        case 3: *b = c; ++b;
-        case 2: *b = c; ++b;
+                *b = c; ++b; BOOST_FALLTHROUGH;
+        case 7: *b = c; ++b; BOOST_FALLTHROUGH;
+        case 6: *b = c; ++b; BOOST_FALLTHROUGH;
+        case 5: *b = c; ++b; BOOST_FALLTHROUGH;
+        case 4: *b = c; ++b; BOOST_FALLTHROUGH;
+        case 3: *b = c; ++b; BOOST_FALLTHROUGH;
+        case 2: *b = c; ++b; BOOST_FALLTHROUGH;
         case 1: *b = c; ++b;
             }
         }
Index: libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp
===================================================================
--- libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp	(revision 84007)
+++ libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp	(working copy)
@@ -658,7 +658,7 @@
                     case T_EXTSTRINGLIT:
                     case T_EXTRAWSTRINGLIT:
                         id = token_id(id & ~AltTokenType);
-                        // fall through
+                        BOOST_FALLTHROUGH;
 
                     case T_CHARLIT:
                     case T_STRINGLIT: