3.10 Macro Pitfalls ¶

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