 
                            ...
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| int a = 81 / CUBE(i++); | 
expands to
| {code:bgColor=#ccccff}
expands to
 | 
int a = 81 / (i++ * i++ * i++);
| Code Block | bgColor#ccccff | 
|---|
| Wiki Markup | 
|---|
| which is undefined (see \[[EXP30|EXP30-C. Do not depend on order of evaluation between sequence points]\]). | 
...