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102 lines
4.2 KiB
HTML
102 lines
4.2 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Visibility Pragmas (Using the GNU Compiler Collection (GCC))</title>
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<meta name="description" content="Visibility Pragmas (Using the GNU Compiler Collection (GCC))">
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<meta name="keywords" content="Visibility Pragmas (Using the GNU Compiler Collection (GCC))">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Pragmas.html#Pragmas" rel="up" title="Pragmas">
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<link href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas" rel="next" title="Push/Pop Macro Pragmas">
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<link href="Diagnostic-Pragmas.html#Diagnostic-Pragmas" rel="prev" title="Diagnostic Pragmas">
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<style type="text/css">
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Visibility-Pragmas"></a>
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<div class="header">
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<p>
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Next: <a href="Push_002fPop-Macro-Pragmas.html#Push_002fPop-Macro-Pragmas" accesskey="n" rel="next">Push/Pop Macro Pragmas</a>, Previous: <a href="Diagnostic-Pragmas.html#Diagnostic-Pragmas" accesskey="p" rel="prev">Diagnostic Pragmas</a>, Up: <a href="Pragmas.html#Pragmas" accesskey="u" rel="up">Pragmas</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>
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</div>
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<hr>
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<a name="Visibility-Pragmas-1"></a>
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<h4 class="subsection">6.61.13 Visibility Pragmas</h4>
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<dl compact="compact">
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<dt><code>#pragma GCC visibility push(<var>visibility</var>)</code></dt>
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<dt><code>#pragma GCC visibility pop</code></dt>
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<dd><a name="index-pragma_002c-visibility"></a>
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<p>This pragma allows the user to set the visibility for multiple
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declarations without having to give each a visibility attribute
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(see <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>).
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</p>
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<p>In C++, ‘<samp>#pragma GCC visibility</samp>’ affects only namespace-scope
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declarations. Class members and template specializations are not
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affected; if you want to override the visibility for a particular
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member or instantiation, you must use an attribute.
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</p>
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</dd>
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</dl>
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</body>
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</html>
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