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Subject: [Bug preprocessor/36453] PR36320 breaks boost
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------- Comment #2 from mueller at gcc dot gnu dot org  2008-06-10 22:14 -------
so the code should be changed to

#elif defined(BOOST_PP_ITERATION_DEPTH) && BOOST_PP_ITERATION_DEPTH() == 1

?

it is confusing that #elif behaves more like "#if" and not like "#else\n#if"


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36453