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<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>.
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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.
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Consequently, please do not use <code class="function">find_end()</code> for dbstl container iterators if
you are using gcc's STL library.
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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.
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These issues do not exist for any function available with the Microsoft
Visual C++ 8 STL library. There are two algorithm functions of Microsoft
Visual C++ 10 STL library that do have an issue:
<code class="function">partial_sort()</code> and
<code class="function">partial_sort_copy()</code>. These are not compatible because they
require the dbstl <code class="literal">vector</code> iterator to create a new
element when updating the current element. Dbstl
<code class="literal">vector</code> iterator can copy the new content to the
current element, but it cannot create a new one. This requirement is
not a part of the C++ STL standard specification, and so dbstl's
<code class="literal">vector</code> iterator does not support it.
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