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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- This manual is for libffi, a portable foreign function interface library. Copyright (C) 2008-2019 Anthony Green and Red Hat, Inc. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. --> <!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Missing Features (libffi: the portable foreign function interface library)</title> <meta name="description" content="Missing Features (libffi: the portable foreign function interface library)"> <meta name="keywords" content="Missing Features (libffi: the portable foreign function interface library)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html" rel="start" title="Top"> <link href="Index.html" rel="index" title="Index"> <link href="index.html" rel="up" title="Top"> <link href="Index.html" rel="next" title="Index"> <link href="Thread-Safety.html" rel="prev" title="Thread Safety"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <span id="Missing-Features"></span><div class="header"> <p> Next: <a href="Index.html" accesskey="n" rel="next">Index</a>, Previous: <a href="Using-libffi.html" accesskey="p" rel="prev">Using libffi</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="Index.html" title="Index" rel="index">Index</a>]</p> </div> <hr> <span id="Missing-Features-1"></span><h2 class="chapter">3 Missing Features</h2> <p><code>libffi</code> is missing a few features. We welcome patches to add support for these. </p> <ul> <li> Variadic closures. </li><li> There is no support for bit fields in structures. </li><li> The “raw” API is undocumented. </li><li> The Go API is undocumented. </li></ul> <p>Note that variadic support is very new and tested on a relatively small number of platforms. </p> </body> </html>