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44 lines
1005 B
XML
44 lines
1005 B
XML
<!DOCTYPE qhelp PUBLIC
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"-//Semmle//qhelp//EN"
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"qhelp.dtd">
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<qhelp>
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<overview>
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<p>
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An unreachable statement almost always indicates missing code or a latent bug and should be examined
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carefully.
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</p>
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</overview>
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<recommendation>
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<p>
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Examine the surrounding code to determine why the statement has become unreachable. If it is no
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longer needed, remove the statement.
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</p>
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</recommendation>
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<example>
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<p>
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In the following example, a spurious semicolon after the <code>if</code> condition at line 2 makes
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the <code>return</code> statement on line 4 unreachable: the function will always execute the
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<code>return</code> statement on line 3 first, so it will never reach line 4.
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</p>
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<sample src="examples/UnreachableStatement.js" />
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<p>
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To correct this issue, remove the spurious semicolon:
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</p>
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<sample src="examples/UnreachableStatementGood.js" />
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</example>
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<references>
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<li>Wikipedia: <a href="http://en.wikipedia.org/wiki/Unreachable_code">Unreachable code</a>.</li>
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</references>
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</qhelp>
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