Fixed a bogus assertion in Wave.

[SVN r32095]

ChangeLog

@@ -79,6 +79,9 @@ CHANGELOG
   The default value for BOOST_WAVE_PRAGMA_COMMAND is "wave" to ensure complete
   backward compatibility.
 - Added missing #pragma warning(pop) directives.
+- Fixed a bug wrt error propagation in the expression parser.
+- Fixed an assertion fired when cpp_token is used to process the quick_start 
+  sample.
   
 Mon Dec  5 22:05:22 CST 2005
 Boost V1.33.1

include/boost/wave/token_ids.hpp

@@ -78,6 +78,7 @@ enum token_category {
 ///////////////////////////////////////////////////////////////////////////////
 //  the token_id assigns unique numbers to the different C++ lexemes
 enum token_id {
+    T_UNKNOWN      = 0,
     T_FIRST_TOKEN  = 256,
     T_AND          = TOKEN_FROM_ID(T_FIRST_TOKEN, OperatorTokenType),
     T_AND_ALT      = TOKEN_FROM_ID(T_FIRST_TOKEN, OperatorTokenType|AltExtTokenType),

include/boost/wave/util/cpp_iterator.hpp

@@ -431,7 +431,7 @@ pp_iterator_functor<ContextT>::operator()()
 // loop over skippable whitespace until something significant is found
 bool skipped_newline = false;
 bool was_seen_newline = seen_newline;
-token_id id = T_ANY;
+token_id id = T_UNKNOWN;
     
     do {
     // get_next_token assigns result to act_token member
@@ -763,7 +763,7 @@ namespace {
     {
         using namespace boost::wave;
         
-        token_id id = T_ANY;
+        token_id id = T_UNKNOWN;
         for (/**/; it != end; ++it) {
             id = token_id(*it);
             if (!IS_CATEGORY(id, WhiteSpaceTokenType))
@@ -771,7 +771,7 @@ namespace {
             if (IS_CATEGORY(id, EOLTokenType))
                 break;          // do not enter a new line
         }
-        BOOST_ASSERT(it == end || id != T_ANY);
+        BOOST_ASSERT(it == end || id != T_UNKNOWN);
         return it != end && IS_CATEGORY(id, PPTokenType);
     }