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| <h4 class="subsection">10.7.4 Empty Statements</h4> |
| <a name="index-Empty-Statements"></a> |
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| <p>Whenever possible, statements with no effect are discarded. But |
| if they are nested within another construct which cannot be |
| discarded for some reason, they are instead replaced with an |
| empty statement, generated by <code>build_empty_stmt</code>. |
| Initially, all empty statements were shared, after the pattern of |
| the Java front end, but this caused a lot of trouble in practice. |
| </p> |
| <p>An empty statement is represented as <code>(void)0</code>. |
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