<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Dbstl known issues</title> <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> <link rel="up" href="stl.html" title="Chapter 7. Standard Template Library API" /> <link rel="prev" href="stl_misc.html" title="Dbstl miscellaneous notes" /> <link rel="next" href="arch.html" title="Chapter 8. Berkeley DB Architecture" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Dbstl known issues</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="stl_misc.html">Prev</a> </td> <th width="60%" align="center">Chapter 7. Standard Template Library API</th> <td width="20%" align="right"> <a accesskey="n" href="arch.html">Next</a></td> </tr> </table> <hr /> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="stl_known_issues"></a>Dbstl known issues</h2> </div> </div> </div> <p> Three algorithm functions of gcc's C++ STL test suite do not work with dbstl. They are <code class="function">find_end()</code>, <code class="function">inplace_merge()</code> and <code class="function">stable_sort()</code>. </p> <p> The reason for the incompatibility of <code class="function">find_end()</code> is that it assumes the data an iterator refers to is located at a shared place (owned by its container). This assumption is not correct in that it is part of the C++ STL standards specification. However, this assumption can not be true for dbstl because each dbstl container iterator caches its referenced value. </p> <p> Consequently, please do not use <code class="function">find_end()</code> for dbstl container iterators if you are using gcc's STL library. </p> <p> The reason for the incompatibility with <code class="function">inplace_merge()</code> and <code class="function">stable_sort()</code> is that their implementation in gcc requires the <span class="bold"><strong>value_type</strong></span> for a container to be default constructible. This requirement is not a part of the the C++ STL standard specification. Dbstl's value type wrappers (such as <code class="classname">ElementHolder</code>) do not support it. </p> <p> These issues do not exist for any function available with the Microsoft Visual C++ STL library. </p> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="stl_misc.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="stl.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="arch.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">Dbstl miscellaneous notes </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> Chapter 8. Berkeley DB Architecture </td> </tr> </table> </div> </body> </html>