Handle the unset startState case in dot generation.

git-svn-id: http://svn.complang.org/ragel/trunk@145 052ea7fc-9027-0410-9066-f65837a77df0

diff --git a/rlgen-dot/gvdotgen.cpp b/rlgen-dot/gvdotgen.cpp
index 6b17e6d..3cdff55 100644 (file)
--- a/rlgen-dot/gvdotgen.cpp
+++ b/rlgen-dot/gvdotgen.cpp
@@ -229,7 +229,9 @@ void GraphvizDotGen::writeDotFile( )
        /* Define the psuedo states. Transitions will be done after the states
         * have been defined as either final or not final. */
        out << "        node [ shape = point ];\n";
-       out << "        ENTRY;\n";
+
+       if ( redFsm->startState != 0 )
+               out << "        ENTRY;\n";
 
        /* Psuedo states for entry points in the entry map. */
        for ( EntryIdVect::Iter en = entryPointIds; en.lte(); en++ ) {
@@ -280,8 +282,8 @@ void GraphvizDotGen::writeDotFile( )
                writeTransList( st );
 
        /* Transitions into the start state. */
-       out << "        ENTRY -> " << redFsm->startState->id << " [ label = \"IN";
-       out << "\" ];\n";
+       if ( redFsm->startState != 0 ) 
+               out << "        ENTRY -> " << redFsm->startState->id << " [ label = \"IN\" ];\n";
 
        /* Transitions into the entry points. */
        for ( EntryIdVect::Iter en = entryPointIds; en.lte(); en++ ) {