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In CIL, blocks, optionals, and macros share the same symbol table so that the targets of "in" statements can be located. Because of this, they cannot have the same name in the same namespace, but, because they do not show up in the final policy, they can have the same name as long as they are in different namespaces. Unfortunately, when copying from one namespace to another, no check was being done to see if there was a conflict. When copying blocks, optionals, and macros, if a datum is found in the destination namespace, then there is a conflict with a previously declared block, optional, or macro, so exit with an error. Reported-by: Nicolas Iooss <nicolas.iooss@m4x.org> Reported-by: Evgeny Vereshchagin <evvers@ya.ru> Signed-off-by: James Carter <jwcart2@gmail.com> |
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