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       0214-va_copy.c - scc - simple c99 compiler
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       ---
       0214-va_copy.c (279B)
       ---
            1 #include <stdarg.h>
            2 
            3 int
            4 f(int c, ...)
            5 {
            6         va_list va1, va2;
            7 
            8         va_start(va1, c);
            9         c += va_arg(va1, int);
           10         va_copy(va2, va1);
           11         c += va_arg(va2, int);
           12         c += va_arg(va1, int);
           13 
           14         va_end(va1);
           15         va_end(va2);
           16 
           17         return c;
           18 }
           19 
           20 int
           21 main()
           22 {
           23         if (f(0, 1, 2, 7) != 5)
           24                 return 1;
           25         return 0;
           26 }