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  11     "><link rel="home" href="../index.html" title="The GNU C++ Library"><link rel="up" href="extensions.html" title="Part III.  Extensions"><link rel="prev" href="extensions.html" title="Part III.  Extensions"><link rel="next" href="ext_compile_checks.html" title="Chapter 16. Compile Time Checks"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><th width="60%" align="center">Part III.
  12   Extensions
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  15   Here we will make an attempt at describing the non-Standard
  16   extensions to the library.  Some of these are from older versions of
  17   standard library components, namely SGI's STL, and some of these are
  18   GNU's.
  19 </p><p><span class="emphasis"><em>Before</em></span> you leap in and use any of these
  20 extensions, be aware of two things:
  21 </p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
  22      Non-Standard means exactly that.
  23      </p><p>
  24        The behavior, and the very
  25        existence, of these extensions may change with little or no
  26        warning.  (Ideally, the really good ones will appear in the next
  27        revision of C++.)  Also, other platforms, other compilers, other
  28        versions of g++ or libstdc++ may not recognize these names, or
  29        treat them differently, or...
  30      </p></li><li class="listitem"><p>
  31        You should know how to access these headers properly.
  32      </p></li></ol></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part III.
  33   Extensions
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