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    SubjectRe: __attribute__((unused))
    On Fri, 15 Oct 2004, Frank van Maarseveen wrote:

    > This makes sense, assuming the gcc info pages are correct:
    > `unused'
    > This attribute, attached to a function, means that the function is
    > meant to be possibly unused. GCC will not produce a warning for
    > this function. GNU C++ does not currently support this attribute
    > as definitions without parameters are valid in C++.
    >
    > `used'
    > This attribute, attached to a function, means that code must be
    > emitted for the function even if it appears that the function is
    > not referenced. This is useful, for example, when the function is
    > referenced only in inline assembly.
    >
    > So, a function could be "used" and "unused" at the same time:
    >
    > unused -> don't warn
    > used -> don't discard

    Except that "used" already implies no warning as it makes the function
    not unused anymore.

    Maciej
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