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Next:&nbsp;<a rel="next" accesskey="n" href="Bug-Reporting.html#Bug-Reporting">Bug Reporting</a>,
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<h3 class="section">19.1 Have You Found a Bug?</h3>
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If you are not sure whether you have found a bug, here are some guidelines:
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<ul><li>If a binary utility gets a fatal signal, for any input whatever, that is
a bug. Reliable utilities never crash.
<p><a name="index-error-on-valid-input-170"></a><li>If a binary utility produces an error message for valid input, that is a
bug.
<li>If you are an experienced user of binary utilities, your suggestions for
improvement are welcome in any case.
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