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<sect2 id="status.iso.1998" xreflabel="ISO C++ 1998">
<?dbhtml filename="status_iso_cxx1998.html"?>

<sect2info>
  <keywordset>
    <keyword>
      ISO C++
    </keyword>
    <keyword>
      1998
    </keyword>
  </keywordset>
</sect2info>

<title>C++ 1998/2003</title>

<sect3 id="iso.1998.status" xreflabel="Implementation Status">
  <title>Implementation Status</title>

<para>
This status table is based on the table of contents of ISO/IEC 14882:2003.
</para>

<para>
This page describes the C++ support in mainline GCC SVN, not in any
particular release.
</para>

<!-- Status is Yes or No, Broken/Partial-->
<!--
   Yes

   No
      <?dbhtml bgcolor="#C8B0B0" ?>
   Broken/Partial
      <?dbhtml bgcolor="#B0B0B0" ?>
-->
<table frame='all'>
<title>C++ 1998/2003 Implementation Status</title>
<tgroup cols='4' align='left' colsep='0' rowsep='1'>
<colspec colname='c1'></colspec>
<colspec colname='c2'></colspec>
<colspec colname='c3'></colspec>
<colspec colname='c4'></colspec>
  <thead>
    <row>
      <entry>Section</entry>
      <entry>Description</entry>
      <entry>Status</entry>
      <entry>Comments</entry>
    </row>
  </thead>

  <tbody>
    <row>
      <entry>
        <emphasis>18</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Language support</emphasis>
      </entry>
    </row>

    <row>
      <entry>18.1</entry>
      <entry>Types</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.2</entry>
      <entry>Implementation properties</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.2.1</entry>
      <entry>Numeric Limits</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.2.1.1</entry>
      <entry>Class template <code>numeric_limits</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.2.1.2</entry>
      <entry><code>numeric_limits</code> members</entry>
      <entry>Y</entry>
    </row>
    <row>
      <entry>18.2.1.3</entry>
      <entry><code>float_round_style</code></entry>
      <entry>Y</entry>
    </row>
    <row>
      <entry>18.2.1.4</entry>
      <entry><code>float_denorm_style</code></entry>
      <entry>Y</entry>
    </row>
    <row>
      <entry>18.2.1.5</entry>
      <entry><code>numeric_limits</code> specializations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.2.2</entry>
      <entry>C Library</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.3</entry>
      <entry>Start and termination</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.4</entry>
      <entry>Dynamic memory management</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.5</entry>
      <entry>Type identification</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.5.1</entry>
      <entry>Class type_info</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.5.2</entry>
      <entry>Class bad_cast</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.5.3</entry>
      <entry>Class bad_typeid</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.6</entry>
      <entry>Exception handling</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.6.1</entry>
      <entry>Class exception</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.6.2</entry>
      <entry>Violation exception-specifications</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.6.3</entry>
      <entry>Abnormal termination</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.6.4</entry>
      <entry><code>uncaught_exception</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>18.7</entry>
      <entry>Other runtime support</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>19</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Diagnostics</emphasis>
      </entry>
    </row>
    <row>
      <entry>19.1</entry>
      <entry>Exception classes</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>19.2</entry>
      <entry>Assertions</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>19.3</entry>
      <entry>Error numbers</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>20</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>General utilities</emphasis>
      </entry>
    </row>
    <row>
      <entry>20.1</entry>
      <entry>Requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
   <row>
      <entry>20.2</entry>
      <entry>Utility components</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.2.1</entry>
      <entry>Operators</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.2.2</entry>
      <entry><code>pair</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
   <row>
      <entry>20.3</entry>
      <entry>Function objects</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.1</entry>
      <entry>Base</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.2</entry>
      <entry>Arithmetic operation</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.3</entry>
      <entry>Comparisons</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.4</entry>
      <entry>Logical operations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.5</entry>
      <entry>Negators</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.6</entry>
      <entry>Binders</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.7</entry>
      <entry>Adaptors for pointers to functions</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.3.8</entry>
      <entry>Adaptors for pointers to members</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4</entry>
      <entry>Memory</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.1</entry>
      <entry>The default allocator</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.2</entry>
      <entry>Raw storage iterator</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.3</entry>
      <entry>Temporary buffers</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.4</entry>
      <entry>Specialized algorithms</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.4.1</entry>
      <entry><code>uninitialized_copy</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.4.2</entry>
      <entry><code>uninitialized_fill</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.4.3</entry>
      <entry><code>uninitialized_fill_n</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.5</entry>
      <entry>Class template <code>auto_ptr</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>20.4.6</entry>
      <entry>C library</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>21</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Strings</emphasis>
      </entry>
    </row>
    <row>
      <entry>21.1</entry>
      <entry>Character traits</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.1.1</entry>
      <entry>Character traits requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.1.2</entry>
      <entry>traits typedef</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.1.3</entry>
      <entry><code>char_traits</code> specializations</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.1.3.1</entry>
      <entry>struct <code>char_traits&lt;char&gt;</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.1.3.2</entry>
      <entry>struct <code>char_traits&lt;wchar_t&gt;</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.2</entry>
      <entry>String classes</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.3</entry>
      <entry>Class template <code>basic_string</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>21.4</entry>
      <entry>Null-terminated sequence utilities</entry>
      <entry>Y</entry>
      <entry>C library dependency</entry>
    </row>
    <row>
      <entry>
        <emphasis>22</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Localization</emphasis>
      </entry>
    </row>
    <row>
      <entry>22.1</entry>
      <entry>Locales</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.1.1</entry>
      <entry>Class <code>locale</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.1.2</entry>
      <entry><code>locale</code> globals</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.1.3</entry>
      <entry>Convenience interfaces</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.1.3.1</entry>
      <entry>Character classification</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.1.3.2</entry>
      <entry>Character conversions</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2</entry>
      <entry>Standard locale categories</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.1</entry>
      <entry><code>ctype</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.2</entry>
      <entry>Numeric</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.2.1</entry>
      <entry><code>num_get</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.2.2</entry>
      <entry><code>num_put</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.3</entry>
      <entry><code>num_punct</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.4</entry>
      <entry><code>collate</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.5</entry>
      <entry>Time</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.5.1</entry>
      <entry><code>time_get</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.5.2</entry>
      <entry><code>time_get_byname</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.5.3</entry>
      <entry><code>time_put</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.5.3</entry>
      <entry><code>time_put_byname</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.6</entry>
      <entry>Monetary</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.6.1</entry>
      <entry><code>money_get</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.6.2</entry>
      <entry><code>money_put</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.6.3</entry>
      <entry><code>money_punct</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.6.4</entry>
      <entry><code>money_punct_byname</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.7</entry>
      <entry><code>messages</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.2.8</entry>
      <entry>Program-defined facets</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>22.3</entry>
      <entry>C Library Locales</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>23</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Containers</emphasis>
      </entry>
    </row>
    <row>
      <entry>23.1</entry>
      <entry>Container requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2</entry>
      <entry>Sequence containers</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.1</entry>
      <entry>Class template <code>deque</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.2</entry>
      <entry>Class template <code>list</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.3</entry>
      <entry>Adaptors</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.3.1</entry>
      <entry>Class template <code>queue</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.3.2</entry>
      <entry>Class template <code>priority_queue</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.3.3</entry>
      <entry>Class template <code>stack</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.4</entry>
      <entry>Class template <code>vector</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.2.5</entry>
      <entry>Class <code>vector&lt;bool&gt;</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.3</entry>
      <entry>Associative containers</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.3.1</entry>
      <entry>Class template <code>map</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.3.2</entry>
      <entry>Class template <code>multimap</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.3.3</entry>
      <entry>Class template <code>set</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>23.3.4</entry>
      <entry>Class template <code>multiset</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>24</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Iterators</emphasis>
      </entry>
    </row>
    <row>
      <entry>24.1</entry>
      <entry>Requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.2</entry>
      <entry>Header <code>&lt;iterator&gt;</code> synopsis</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.3</entry>
      <entry>Iterator primitives</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.4</entry>
      <entry>Predefined iterators and Iterator adaptors</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.4.1</entry>
      <entry>Reverse iterators</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.4.2</entry>
      <entry>Insert iterators</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.5</entry>
      <entry>Stream iterators</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.5.1</entry>
      <entry>Class template <code>istream_iterator</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.5.2</entry>
      <entry>Class template <code>ostream_iterator</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.5.3</entry>
      <entry>Class template <code>istreambuf_iterator</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>24.5.4</entry>
      <entry>Class template <code>ostreambuf_iterator</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>25</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Algorithms</emphasis>
      </entry>
    </row>
    <row>
      <entry>25.1</entry>
      <entry>Non-modifying sequence operations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>25.2</entry>
      <entry>Mutating sequence operations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>25.3</entry>
      <entry>Sorting and related operations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>25.4</entry>
      <entry>C library algorithms</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
      <emphasis>26</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Numerics</emphasis>
      </entry>
    </row>
    <row>
      <entry>26.1</entry>
      <entry>Numeric type requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.2</entry>
      <entry>Complex numbers</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3</entry>
      <entry>Numeric arrays</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.1</entry>
      <entry>Header <code>&lt;valarray&gt;</code> synopsis</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.2</entry>
      <entry>Class template <code>valarray</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.3</entry>
      <entry><code>valarray</code> non-member operations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.4</entry>
      <entry>Class <code>slice</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.5</entry>
      <entry>Class template <code>slice_array</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.6</entry>
      <entry>Class <code>gslice</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.7</entry>
      <entry>Class template <code>gslice_array</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.8</entry>
      <entry>Class template <code>mask_array</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.3.9</entry>
      <entry>Class template <code>indirect_array</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4</entry>
      <entry>Generalized numeric operations</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4.1</entry>
      <entry><code>accumulate</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4.2</entry>
      <entry><code>inner_product</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4.3</entry>
      <entry><code>partial_sum</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4.4</entry>
      <entry><code>adjacent_difference</code></entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.4.5</entry>
      <entry>iota</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>26.5</entry>
      <entry>C Library</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>27</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Input/output</emphasis>
      </entry>
    </row>
    <row>
      <entry>27.1</entry>
      <entry>Requirements</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.2</entry>
      <entry>Forward declarations</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.3</entry>
      <entry>Standard iostream objects</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.3.1</entry>
      <entry>Narrow stream objects</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.3.2</entry>
      <entry>Wide stream objects</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.4</entry>
      <entry>Iostreams base classes</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.5</entry>
      <entry>Stream buffers</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.6</entry>
      <entry>Formatting and manipulators</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.7</entry>
      <entry>String-based streams</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>27.8</entry>
      <entry>File-based streams</entry>
      <entry>Y</entry>
      <entry></entry>
    </row>
    <row>
      <entry>
        <emphasis>Appendix D</emphasis>
      </entry>
      <entry namest="c2" nameend="c4" align="left">
        <emphasis>Compatibility features</emphasis>
      </entry>
    </row>
    <row>
      <entry>D.1</entry>
      <entry>Increment operator with bool operand</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.2</entry>
      <entry><code>static</code> keyword</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.3</entry>
      <entry>Access declarations</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.4</entry>
      <entry>Implicit conversion from const strings</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.5</entry>
      <entry>C standard library headers</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.6</entry>
      <entry>Old iostreams members</entry>
      <entry></entry>
      <entry></entry>
    </row>
    <row>
      <entry>D.7</entry>
      <entry>char* streams</entry>
      <entry></entry>
      <entry></entry>
    </row>

  </tbody>
</tgroup>
</table>
</sect3>

<sect3 id="iso.1998.specific" xreflabel="Implementation Specific">
  <title>Implementation Specific Behavior</title>

   <para>
     The ISO standard defines the following phrase:
   </para>
   <blockquote>
     <variablelist>
     <varlistentry>
       <term>
         <code>[1.3.5] implementation-defined behavior</code>
       </term>
       <listitem>
         <para>
         Behavior, for a well-formed program construct and correct data, that
         depends on the implementation <emphasis>and that each implementation
         shall document</emphasis>.
         </para>
       </listitem>
     </varlistentry>
     </variablelist>
   </blockquote>
   <para>
     We do so here, for the C++ library only.  Behavior of the
     compiler, linker, runtime loader, and other elements of &quot;the
     implementation&quot; are documented elsewhere.  Everything listed
     in Annex B, Implementation Qualities, are also part of the
     compiler, not the library.
   </para>
   <para>
     For each entry, we give the section number of the standard, when
     applicable.  This list is probably incomplet and inkorrekt.
   </para>
   <para>
     <emphasis>[1.9]/11 #3</emphasis> If <code>isatty(3)</code> is true, then
      interactive stream support is implied.
   </para>
   <para>
     <emphasis>[17.4.4.5]</emphasis> Non-reentrant functions are probably best
      discussed in the various sections on multithreading (see above).
   </para>
   <!-- [17.4.4.8]/3 says any function that doesn't have an exception-spec
        can throw whatever we want; see also its footnote.  Let's list those
        in the sections where the function itself occurs.
   -->
   <para><emphasis>[18.1]/4</emphasis> The type of <code>NULL</code> is described
      <link linkend="std.support.types.null">here</link>.
   </para>
   <para><emphasis>[18.3]/8</emphasis> Even though it's listed in the library
      sections, libstdc++ has zero control over what the cleanup code hands
      back to the runtime loader.  Talk to the compiler people.  :-)
   </para>
   <para><emphasis>[18.4.2.1]/5</emphasis> (bad_alloc),
      <emphasis>[18.5.2]/5</emphasis> (bad_cast),
      <emphasis>[18.5.3]/5</emphasis> (bad_typeid),
      <emphasis>[18.6.1]/8</emphasis> (exception),
      <emphasis>[18.6.2.1]/5</emphasis> (bad_exception):  The <code>what()</code>
      member function of class <code>std::exception</code>, and these other
      classes publicly derived from it, simply returns the name of the
      class.  But they are the <emphasis>mangled</emphasis> names; you will need to call
      <code>c++filt</code> and pass the names as command-line parameters to
      demangle them, or call a
      <link linkend="manual.ext.demangle">runtime demangler function</link>.
      (The classes in <code>&lt;stdexcept&gt;</code> have constructors which
      require an argument to use later for <code>what()</code> calls, so the
      problem of <code>what()</code>'s value does not arise in most
      user-defined exceptions.)
   </para>
   <para><emphasis>[18.5.1]/7</emphasis> The return value of
      <code>std::type_info::name()</code> is the mangled type name (see the
      previous entry for more).
   </para>
   <para><emphasis>[20.1.5]/5</emphasis> <emphasis>&quot;Implementors are encouraged to
      supply libraries that can accept allocators that encapsulate more
      general memory models and that support non-equal instances.  In such
      implementations, any requirements imposed on allocators by containers
      beyond those requirements that appear in Table 32, and the semantics
      of containers and algorithms when allocator instances compare
      non-equal, are implementation-defined.&quot;</emphasis>  As yet we don't
      have any allocators which compare non-equal, so we can't describe how
      they behave.
   </para>
   <para><emphasis>[21.1.3.1]/3,4</emphasis>,
      <emphasis>[21.1.3.2]/2</emphasis>,
      <emphasis>[23.*]'s foo::iterator</emphasis>,
      <emphasis>[27.*]'s foo::*_type</emphasis>,
      <emphasis>others...</emphasis>
      Nope, these types are called implementation-defined because you
      shouldn't be taking advantage of their underlying types.  Listing them
      here would defeat the purpose.  :-)
   </para>
   <para><emphasis>[21.1.3.1]/5</emphasis> I don't really know about
      the mbstate_t stuff... see
      the <link linkend="std.localization.facet.codecvt">chapter 22
      notes</link> for what does exist.
   </para>
   <para><emphasis>[22.*]</emphasis> Anything and everything we have on locale
      implementation will be described
      <link linkend="std.localization.locales.locale">over here</link>.
   </para>
   <para><emphasis>[26.2.8]/9</emphasis> I have no idea what
      <code>complex&lt;T&gt;</code>'s pow(0,0) returns.
   </para>
   <para><emphasis>[27.4.2.4]/2</emphasis> Calling
      <code>std::ios_base::sync_with_stdio</code> after I/O has already been
      performed on the standard stream objects will
      flush the buffers, and <!-- this line might go away -->
      destroy and recreate the underlying buffer instances.  Whether or not
      the previously-written I/O is destroyed in this process depends mostly
      on the --enable-libio choice:  for stdio, if the written data is
      already in the stdio buffer, the data may be completely safe!
   </para>
   <para><emphasis>[27.6.1.1.2]</emphasis>,
      <emphasis>[27.6.2.3]</emphasis> The I/O sentry ctor and dtor can perform
      additional work than the minimum required.  We are not currently taking
      advantage of this yet.
   </para>
   <para><emphasis>[27.7.1.3]/16</emphasis>,
      <emphasis>[27.8.1.4]/10</emphasis>
      The effects of <code>pubsetbuf/setbuf</code> are described
      <link linkend="std.io">in this chapter</link>.
   </para>
   <para><emphasis>[27.8.1.4]/16</emphasis> Calling <code>fstream::sync</code> when
      a get area exists will... whatever <code>fflush()</code> does, I think.
   </para>

</sect3>

</sect2>

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