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<html xmlns="http://www.w3.org/1999/xhtml"><head><title/><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content=" ISO C++ , library "/><link rel="home" href="../spine.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><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"/></tr><tr><td align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><th width="60%" align="center">Part III.
Extensions
</th><td align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr/></div><div class="preface"><div class="titlepage"><div><div><h1 class="title"><a id="id481886"/></h1></div></div></div><p>
Here we will make an attempt at describing the non-Standard extensions to
the library. Some of these are from SGI's STL, some of these are GNU's,
and some just seemed to appear on the doorstep.
</p><p><span class="emphasis"><em>Before</em></span> you leap in and use any of these
extensions, be aware of two things:
</p><div class="orderedlist"><ol class="orderedlist"><li class="listitem"><p>
Non-Standard means exactly that.
</p><p>
The behavior, and the very
existence, of these extensions may change with little or no
warning. (Ideally, the really good ones will appear in the next
revision of C++.) Also, other platforms, other compilers, other
versions of g++ or libstdc++ may not recognize these names, or
treat them differently, or...
</p></li><li class="listitem"><p>
You should know how to access these headers properly.
</p></li></ol></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><td align="center"><a accesskey="u" href="extensions.html">Up</a></td><td align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td align="left" valign="top">Part III.
Extensions
</td><td align="center"><a accesskey="h" href="../spine.html">Home</a></td><td align="right" valign="top"> Chapter 16. Compile Time Checks</td></tr></table></div></body></html>