114 lines
5.0 KiB
HTML
114 lines
5.0 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
"GNU Free Documentation License".
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development. -->
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>GNU Compiler Collection (GCC) Internals: Attributes</title>
|
|
|
|
<meta name="description" content="GNU Compiler Collection (GCC) Internals: Attributes">
|
|
<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Attributes">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="GENERIC.html#GENERIC" rel="up" title="GENERIC">
|
|
<link href="Expression-trees.html#Expression-trees" rel="next" title="Expression trees">
|
|
<link href="Adding-new-DECL-node-types.html#Adding-new-DECL-node-types" rel="prev" title="Adding new DECL node types">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.indentedblock {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
|
|
div.smalllisp {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}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nocodebreak {white-space:nowrap}
|
|
span.nolinebreak {white-space:nowrap}
|
|
span.roman {font-family:serif; font-weight:normal}
|
|
span.sansserif {font-family:sans-serif; font-weight:normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
|
|
<a name="Attributes"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Expression-trees.html#Expression-trees" accesskey="n" rel="next">Expression trees</a>, Previous: <a href="Declarations.html#Declarations" accesskey="p" rel="prev">Declarations</a>, Up: <a href="GENERIC.html#GENERIC" accesskey="u" rel="up">GENERIC</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="Attributes-in-trees"></a>
|
|
<h3 class="section">10.5 Attributes in trees</h3>
|
|
<a name="index-attributes"></a>
|
|
|
|
<p>Attributes, as specified using the <code>__attribute__</code> keyword, are
|
|
represented internally as a <code>TREE_LIST</code>. The <code>TREE_PURPOSE</code>
|
|
is the name of the attribute, as an <code>IDENTIFIER_NODE</code>. The
|
|
<code>TREE_VALUE</code> is a <code>TREE_LIST</code> of the arguments of the
|
|
attribute, if any, or <code>NULL_TREE</code> if there are no arguments; the
|
|
arguments are stored as the <code>TREE_VALUE</code> of successive entries in
|
|
the list, and may be identifiers or expressions. The <code>TREE_CHAIN</code>
|
|
of the attribute is the next attribute in a list of attributes applying
|
|
to the same declaration or type, or <code>NULL_TREE</code> if there are no
|
|
further attributes in the list.
|
|
</p>
|
|
<p>Attributes may be attached to declarations and to types; these
|
|
attributes may be accessed with the following macros. All attributes
|
|
are stored in this way, and many also cause other changes to the
|
|
declaration or type or to other internal compiler data structures.
|
|
</p>
|
|
<dl>
|
|
<dt><a name="index-DECL_005fATTRIBUTES"></a>Tree Macro: <em>tree</em> <strong>DECL_ATTRIBUTES</strong> <em>(tree <var>decl</var>)</em></dt>
|
|
<dd><p>This macro returns the attributes on the declaration <var>decl</var>.
|
|
</p></dd></dl>
|
|
|
|
<dl>
|
|
<dt><a name="index-TYPE_005fATTRIBUTES"></a>Tree Macro: <em>tree</em> <strong>TYPE_ATTRIBUTES</strong> <em>(tree <var>type</var>)</em></dt>
|
|
<dd><p>This macro returns the attributes on the type <var>type</var>.
|
|
</p></dd></dl>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|