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<td class="back"><a id="top"></a><a href="s4.3.a.html" rel="prev">&lt;&lt;&nbsp;&sect;4.3.(a)&nbsp;Syntax</a></td>
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<td class="next"><a href="s4.3.c.html" rel="next">&sect;4.3.(c)&nbsp;Duplicate base call&nbsp;&gt;&gt;</a></td>
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<div class="breadcrumb"><a class="nav" href="s4.html" rel="section">&sect;4&nbsp;Callin Binding</a>&nbsp;&gt;&nbsp;<a class="nav" href="s4.3.html" rel="section">&sect;4.3&nbsp;Base calls</a></div>
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<h4 class="subsect">&sect;4.3.(b)&nbsp;<span class="title">Missing base call</span><a class="img" href="s4.3.b.html"
title="PermaLink to (b)&nbsp;Missing base call"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png"
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<p>For each callin method, the compiler uses some flow analysis to check whether
a base call will be invoked on each path of execution (analysis is very similar
to the analysis for definite assignment regarding final variables -
<a href="http://java.sun.com/docs/books/jls/third_edition/html/defAssign.html"
class="ext">JLS &sect;16</a>).
The compiler will issue a warning if a base call is missing either
on each path (definitely missing) or on some paths (potentially missing).
Instead of directly invoking a base call, a callin method may also call
its explicit or implicit super version using <code>super.m()</code> or <code>tsuper.m()</code> (see <a href="s1.3.1.f.html" title="&sect;1.3.1.(f)&nbsp;tsuper" class="sect">&sect;1.3.1.(f)</a>).
In this case the flow analysis will transitively include the called super/tsuper version.
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<td class="back"><a href="s4.3.a.html" rel="prev">&lt;&lt;&nbsp;&sect;4.3.(a)&nbsp;Syntax</a></td>
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<div class="breadcrumb"><a class="nav" href="s4.html" rel="section">&sect;4&nbsp;Callin Binding</a>&nbsp;&gt;&nbsp;<a class="nav" href="s4.3.html" rel="section">&sect;4.3&nbsp;Base calls</a></div>
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OT/J version 1.3 &mdash; last modified: 2010-06-08
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