1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>Dbstl known issues</title> 7 <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> 10 <link rel="up" href="stl.html" title="Chapter��7.��Standard Template Library API" /> 11 <link rel="prev" href="stl_misc.html" title="Dbstl miscellaneous notes" /> 12 <link rel="next" href="arch.html" title="Chapter��8.�� Berkeley DB Architecture" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">Dbstl known issues</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="stl_misc.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��7.��Standard Template Library API</th> 23 <td width="20%" align="right">��<a accesskey="n" href="arch.html">Next</a></td> 24 </tr> 25 </table> 26 <hr /> 27 </div> 28 <div class="sect1" lang="en" xml:lang="en"> 29 <div class="titlepage"> 30 <div> 31 <div> 32 <h2 class="title" style="clear: both"><a id="stl_known_issues"></a>Dbstl known issues</h2> 33 </div> 34 </div> 35 </div> 36 <p> 37 Three algorithm functions of gcc's C++ STL test suite do not work with dbstl. They are 38 <code class="function">find_end()</code>, <code class="function">inplace_merge()</code> and 39 <code class="function">stable_sort()</code>. 40</p> 41 <p> 42 The reason for the incompatibility of <code class="function">find_end()</code> is that it assumes the 43 data an iterator refers to is located at a shared place (owned by its container). This 44 assumption is not correct in that it is part of the C++ STL standards specification. However, 45 this assumption can not be true for dbstl because each dbstl container iterator caches its 46 referenced value. 47</p> 48 <p> 49 Consequently, please do not use <code class="function">find_end()</code> for dbstl container iterators if 50 you are using gcc's STL library. 51</p> 52 <p> 53 The reason for the incompatibility with <code class="function">inplace_merge()</code> and 54 <code class="function">stable_sort()</code> is that their implementation in gcc requires the 55 <span class="bold"><strong>value_type</strong></span> for a container to be default constructible. This 56 requirement is not a part of the the C++ STL standard specification. Dbstl's value type 57 wrappers (such as <code class="classname">ElementHolder</code>) do not support it. 58</p> 59 <p> 60 These issues do not exist for any function available with the Microsoft Visual C++ STL library. 61</p> 62 </div> 63 <div class="navfooter"> 64 <hr /> 65 <table width="100%" summary="Navigation footer"> 66 <tr> 67 <td width="40%" align="left"><a accesskey="p" href="stl_misc.html">Prev</a>��</td> 68 <td width="20%" align="center"> 69 <a accesskey="u" href="stl.html">Up</a> 70 </td> 71 <td width="40%" align="right">��<a accesskey="n" href="arch.html">Next</a></td> 72 </tr> 73 <tr> 74 <td width="40%" align="left" valign="top">Dbstl miscellaneous notes��</td> 75 <td width="20%" align="center"> 76 <a accesskey="h" href="index.html">Home</a> 77 </td> 78 <td width="40%" align="right" valign="top">��Chapter��8.�� 79 Berkeley DB Architecture 80 </td> 81 </tr> 82 </table> 83 </div> 84 </body> 85</html> 86