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<title>The C Preprocessor: Macro Pitfalls</title>
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<a name="Macro-Pitfalls"></a>
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Previous: <a href="Directives-Within-Macro-Arguments.html#Directives-Within-Macro-Arguments" accesskey="p" rel="prev">Directives Within Macro Arguments</a>, Up: <a href="Macros.html#Macros" accesskey="u" rel="up">Macros</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-Directives.html#Index-of-Directives" title="Index" rel="index">Index</a>]</p>
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<a name="Macro-Pitfalls-1"></a>
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<h3 class="section">3.10 Macro Pitfalls</h3>
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<a name="index-problems-with-macros"></a>
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<a name="index-pitfalls-of-macros"></a>
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<p>In this section we describe some special rules that apply to macros and
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macro expansion, and point out certain cases in which the rules have
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counter-intuitive consequences that you must watch out for.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Misnesting.html#Misnesting" accesskey="1">Misnesting</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Operator-Precedence-Problems.html#Operator-Precedence-Problems" accesskey="2">Operator Precedence Problems</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Swallowing-the-Semicolon.html#Swallowing-the-Semicolon" accesskey="3">Swallowing the Semicolon</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Duplication-of-Side-Effects.html#Duplication-of-Side-Effects" accesskey="4">Duplication of Side Effects</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Self_002dReferential-Macros.html#Self_002dReferential-Macros" accesskey="5">Self-Referential Macros</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Argument-Prescan.html#Argument-Prescan" accesskey="6">Argument Prescan</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Newlines-in-Arguments.html#Newlines-in-Arguments" accesskey="7">Newlines in Arguments</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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