ing, line: UInt)</a>
        
<div class="comment collapse" id="comment-func-assertionfailure_-string-file_-staticstring-line_-uint"><div class="p">
    <p>Indicate that an internal sanity check failed.</p>

<p>Use this function to stop the program, without impacting the
performance of shipping code, when control flow is not expected to
reach the call (e.g. in the <code>default</code> case of a <code>switch</code> where you
have knowledge that one of the other cases must be satisfied). To
protect code from 