http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45977
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2010-10-12 11:32:10 UTC --- This is a coding style warning - the code is valid, but extremely unidiomatic for C since "extern" is generally expected to mean that the declaration is not providing a definition of the object. Following static by extern, though valid, is also a C feature of doubtful value.
