Have you found a bug?

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Have you found a bug?

If you are not sure whether you have found a bug, here are some guidelines:

If the debugger gets a fatal signal, for any input whatever, that is a GDB bug. Reliable debuggers never crash.
If GDB produces an error message for valid input, that is a bug.
If GDB does not produce an error message for invalid input, that is a bug. However, you should note that your idea of “invalid input” might be our idea of an extension or support for traditional practice.
If you are an experienced user of debugging tools, your suggestions for improvement of GDB are welcome in any case.