archlinux missing C lib, where is stdarg.h
Found a simple implement about printf in K&R C, which need a std lib called 〈stdarg.h〉. A data type va_list is defined there, well, Found no 〈stdarg.h〉 in /usr/include, the strange thing was I still allowed to include stdarg.h and use va_list in my program, woundering where is the danm 〈stdarg.h〉is.
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