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Node:<a name="C++%20Attributes">C++ Attributes</a>,
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<h3 class="section">C++-Specific Variable, Function, and Type Attributes</h3>
<p>Some attributes only make sense for C++ programs.
<dl>
<dt><code>init_priority (</code><var>priority</var><code>)</code>
<dd>
<p>In Standard C++, objects defined at namespace scope are guaranteed to be
initialized in an order in strict accordance with that of their definitions
<em>in a given translation unit</em>. No guarantee is made for initializations
across translation units. However, GNU C++ allows users to control the
order of initialization of objects defined at namespace scope with the
<code>init_priority</code> attribute by specifying a relative <var>priority</var>,
a constant integral expression currently bounded between 101 and 65535
inclusive. Lower numbers indicate a higher priority.
<p>In the following example, <code>A</code> would normally be created before
<code>B</code>, but the <code>init_priority</code> attribute has reversed that order:
<pre class="smallexample"> Some_Class A __attribute__ ((init_priority (2000)));
Some_Class B __attribute__ ((init_priority (543)));
</pre>
<p>Note that the particular values of <var>priority</var> do not matter; only their
relative ordering.
<br><dt><code>java_interface</code>
<dd>
<p>This type attribute informs C++ that the class is a Java interface. It may
only be applied to classes declared within an <code>extern "Java"</code> block.
Calls to methods declared in this interface will be dispatched using GCJ's
interface table mechanism, instead of regular virtual table dispatch.
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