UnreachableStatement.qhelp

<!DOCTYPE qhelp PUBLIC
  "-//Semmle//qhelp//EN"
  "qhelp.dtd">
<qhelp>
<overview>
<p>
An unreachable statement almost always indicates missing code or a latent bug and should be examined
carefully.
</p>

</overview>
<recommendation>

<p>
Examine the surrounding code to determine why the statement has become unreachable. If it is no
longer needed, remove the statement.
</p>

</recommendation>
<example>

<p>
In the following example, a spurious semicolon after the <code>if</code> condition at line 2 makes
the <code>return</code> statement on line 4 unreachable: the function will always execute the
<code>return</code> statement on line 3 first, so it will never reach line 4.
</p>

<sample src="examples/UnreachableStatement.js" />

<p>
To correct this issue, remove the spurious semicolon:
</p>

<sample src="examples/UnreachableStatementGood.js" />

</example>
<references>


<li>Wikipedia: <a href="http://en.wikipedia.org/wiki/Unreachable_code">Unreachable code</a>.</li>

</references>
</qhelp>