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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"wrong macro expansion (multiple macros)","articleBody":"First reported in Cppcheck trac here:\r\nhttps://trac.cppcheck.net/ticket/9538\r\n\r\nCode:\r\n```\r\n#define at(x, y) x##y\r\n#define b(...)                                                                 \\\r\n  aa(__VA_ARGS__, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,  \\\r\n     , , , , , , , , 2)\r\n#define aa(c, d, a, b, e, f, g, h, ab, ac, i, ad, j, k, l, m, n, o, p, ae, q,  \\\r\n           r, s, t, u, v, w, x, y, z, af, ag, ah, ai, aj, ak, al, am, an, ao,  \\\r\n           ap)                                                                 \\\r\n  ap\r\n#define aq(...) ar(b(__VA_ARGS__), __VA_ARGS__) static_assert(true, \"\")\r\n#define ar(ap, ...) at(I_, ap)(__VA_ARGS__)\r\n#define I_2(as, a)\r\naq(a, array);\r\n```\r\n\r\nsimplecpp outputs `I_2 ( a , array ) static_assert ( true , \"\" ) ;` but `gcc -E` output is `static_assert ( true , \"\" ) ;`","author":{"url":"https://github.com/danmar","@type":"Person","name":"danmar"},"datePublished":"2019-12-14T15:03:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/185/simplecpp/issues/185"}