as: Bug Criteria

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1 10.1 Have You Found a Bug?
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1 If you are not sure whether you have found a bug, here are some
1 guidelines:
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1    * If the assembler gets a fatal signal, for any input whatever, that
1      is a 'as' bug.  Reliable assemblers never crash.
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1    * If 'as' produces an error message for valid input, that is a bug.
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1    * If 'as' does not produce an error message for invalid input, that
1      is a bug.  However, you should note that your idea of "invalid
1      input" might be our idea of "an extension" or "support for
1      traditional practice".
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1    * If you are an experienced user of assemblers, your suggestions for
1      improvement of 'as' are welcome in any case.
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