2011/5/1 Hartmut Kaiser <span dir="ltr">&lt;<a href="mailto:hartmut.kaiser@gmail.com">hartmut.kaiser@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div class="h5">Semantic actions in Karma are supposed to _supply_ the attribute value to generate output from. Therefore your start rule needs to be written as:<br></div></div>
<br>
    start = big_dword &gt;&gt; big_dword[_1 = ref(temp)];<br>
</blockquote><div><br></div><div>I believe it was the Qi part (use %= instead):</div><div><br></div><div>    start %= big_dword &gt;&gt; big_dword [ref(temp) = _1]; </div><div><br></div><div>Then the 2nd assertion fails at runtime, however:</div>
<div><br></div><div> 
    start %= big_dword &gt;&gt; big_dword;</div><div><br></div><div>works fine...really strange to me... how can the action affect the attribute?</div>