Re: How do linkers deal with C++ duplicate code?

John McEnerney <johnmce@world.std.com> wrote:
>One possibility is to compare the size/contents of duplicate modules and,
>if they match, discard all but one; otherwise report some sort of error.


Nope, can't work for C++. Please see the standard. Hint think about
how the contents change if you say -O9 in one translation unit and -00
in another. See my other post for how to overcome this.


>In the Metrowerks C/C++ compilers and linkers, we use a storage-class
>attribute that indicates that a symbol is expected to have multiple
>definitions, and that all are guaranteed by the compiler to have identical
>contents.


Hum, if you have it implemented, then, let me ask, do you actually
compare full contents? I hope not (unless you interpret the stuff).
--

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