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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Defect: Prepocessor fails to expand x-macro macro parameter","articleBody":"cppcheck fails to preprocess the code below:\r\n\r\n```\r\n\u003e cppcheck --version\r\nCppcheck 2.3\r\n\u003e cppcheck -E main.c\r\nmain.c:12:0: error: failed to expand 'COLOR_SET', Wrong number of parameters for macro 'ALL_COLORS'. [preprocessorErrorDirective]\r\n#define COLOR_SET ALL_COLORS(WARM_COLORS)\r\n^\r\n\r\n```\r\n\r\nmain.c:\r\n\r\n```\r\n#define ALL_COLORS(warm_colors) \\\r\n\tX(Blue) \\\r\n\tX(Green) \\\r\n\tX(Purple) \\\r\n\twarm_colors\r\n\r\n#define WARM_COLORS \\\r\n\tX(Red) \\\r\n\tX(Yellow) \\\r\n\tX(Orange)\r\n\r\n#define COLOR_SET ALL_COLORS(WARM_COLORS)\r\n\r\n#define X(color) #color,\r\n\r\nCOLOR_SET\r\n```\r\n\r\ngcc handles it fine:\r\n\r\n```\r\n\u003e gcc -E main.c\r\n# 1 \"main.c\"\r\n# 1 \"\u003cbuilt-in\u003e\"\r\n# 1 \"\u003ccommand-line\u003e\"\r\n# 1 \"/usr/include/stdc-predef.h\" 1 3 4\r\n# 1 \"\u003ccommand-line\u003e\" 2\r\n# 1 \"main.c\"\r\n# 16 \"main.c\"\r\n\"Blue\", \"Green\", \"Purple\", \"Red\", \"Yellow\", \"Orange\",\r\n```","author":{"url":"https://github.com/mavik1","@type":"Person","name":"mavik1"},"datePublished":"2021-01-07T14:11:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/201/simplecpp/issues/201"}