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#include <stdarg.h>
extern void abort (void);
extern void exit (int);
void bar (int n, int c)
{
static int lastn = -1, lastc = -1;
if (lastn != n)
{
if (lastc != lastn)
abort ();
lastc = 0;
lastn = n;
}
if (c != (char) (lastc ^ (n << 3)))
abort ();
lastc++;
}
#define D(N) typedef struct { char x[N]; } A##N;
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
void foo (int size, ...)
{
#define D(N) A##N a##N;
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
va_list ap;
int i;
if (size != 21)
abort ();
va_start (ap, size);
#define D(N) \
a##N = va_arg (ap, typeof (a##N)); \
for (i = 0; i < N; i++) \
bar (N, a##N.x[i]);
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
va_end (ap);
}
int main (void)
{
#define D(N) A##N a##N;
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
int i;
#define D(N) \
for (i = 0; i < N; i++) \
a##N.x[i] = i ^ (N << 3);
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
foo (21
#define D(N) , a##N
D(0) D(1) D(2) D(3) D(4) D(5) D(6) D(7)
D(8) D(9) D(10) D(11) D(12) D(13) D(14) D(15)
D(16) D(31) D(32) D(35) D(72)
#undef D
);
exit (0);
}
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