Why can't decrease the size of a struct when substitute old library?

Posted by solotim on Stack Overflow See other posts from Stack Overflow or by solotim
Published on 2010-04-22T08:51:26Z Indexed on 2010/04/22 8:53 UTC
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As for C programming, one of the rules when we create new version of existing shared library is that we can't decrease the size of struct defined in that library.

Why does this have to be obeyed?

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