<div dir="ltr"><br class="gmail-Apple-interchange-newline"><span style="font-family:arial,sans-serif;white-space:pre-wrap;background-color:rgb(248,249,250)">I have successfully registered and run a test checker.
</span><br class="gmail-Apple-interchange-newline"><span style="font-family:arial,sans-serif;white-space:pre-wrap;background-color:rgb(248,249,250)">Now I want to get the definition of the variable and the use chain.</span>  <div><br class="gmail-Apple-interchange-newline"><span style="font-family:arial,sans-serif;white-space:pre-wrap;background-color:rgb(248,249,250)">So while referring to other checkers' sources, I couldn't find a DU-chain.</span>  <br></div><div><br></div><div><font size="6">Q. how can i get du-chain(define-use) in checker <span style="background-color:rgb(248,249,250);font-family:inherit;white-space:pre-wrap">implementation</span>?</font></div></div>