Differences in Macro ## concatenation operator between Visual-C++ and gcc - 滿天星的日誌 - 網易博客
According to the C Standard, the result of the '##' preprocessing operator must be a 'preprocessing token' or the result is undefined (C99 6.10.3.3(3) - The ## operator). The list of preprocessing tokens is (C99 6.4(3) - Lexical elements): header names, i...