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| <h3 class="section">19.1 Have You Found a Bug?</h3> |
| |
| <p><a name="index-bug-criteria-151"></a> |
| If you are not sure whether you have found a bug, here are some guidelines: |
| |
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| <a name="index-fatal-signal-152"></a> |
| <a name="index-crash-153"></a> |
| <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-154"></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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