103 lines
4.3 KiB
HTML
103 lines
4.3 KiB
HTML
<!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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<head>
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<title>Using the GNU Compiler Collection (GCC): Visibility Pragmas</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): Visibility Pragmas">
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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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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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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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