| Macro Pitfalls

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In this section, we describe some special rules that apply to macros and macro expansion, and point out certain cases in which the rules have counter-intuitive consequences that you must watch out for.

- Misnesting
- Operator Precedence Problems
- Swallowing the Semicolon
- Duplication of Side Effects
- Self-Referential Macros
- Argument Prescan
- Newlines in Arguments