Viewing file:  va-arg-24.c (1.94 KB) -rw-r--r--
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/* The purpose of this code is to test argument passing of a tuple of
11 integers, with the break point between named and unnamed arguments
at every possible position. */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
static int errors = 0;
static void
verify (const char *tcase, int n[11])
{
int i;
for (i = 0; i <= 10; i++)
if (n[i] != i)
{
printf (" %s: n[%d] = %d expected %d\n", tcase, i, n[i], i);
errors++;
}
}
#define STR(x) #x
#define p(i) int q##i,
#define P(i) n[i] = q##i;
#define p0 p(0)
#define p1 p(1)
#define p2 p(2)
#define p3 p(3)
#define p4 p(4)
#define p5 p(5)
#define p6 p(6)
#define p7 p(7)
#define p8 p(8)
#define p9 p(9)
#define P0 P(0)
#define P1 P(1)
#define P2 P(2)
#define P3 P(3)
#define P4 P(4)
#define P5 P(5)
#define P6 P(6)
#define P7 P(7)
#define P8 P(8)
#define P9 P(9)
#define TCASE(x, params, vecinit) \
static void \
varargs##x (params ...) \
{ \
va_list ap; \
int n[11]; \
int i; \
\
va_start (ap, q##x); \
vecinit \
for (i = x + 1; i <= 10; i++) \
n[i] = va_arg (ap, int); \
va_end (ap); \
\
verify (STR(varargs##x), n); \
}
#define TEST(x) varargs##x (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
TCASE(0, p0 , P0 )
TCASE(1, p0 p1 , P0 P1 )
TCASE(2, p0 p1 p2 , P0 P1 P2 )
TCASE(3, p0 p1 p2 p3 , P0 P1 P2 P3 )
TCASE(4, p0 p1 p2 p3 p4 , P0 P1 P2 P3 P4 )
TCASE(5, p0 p1 p2 p3 p4 p5 , P0 P1 P2 P3 P4 P5 )
TCASE(6, p0 p1 p2 p3 p4 p5 p6 , P0 P1 P2 P3 P4 P5 P6 )
TCASE(7, p0 p1 p2 p3 p4 p5 p6 p7 , P0 P1 P2 P3 P4 P5 P6 P7 )
TCASE(8, p0 p1 p2 p3 p4 p5 p6 p7 p8 , P0 P1 P2 P3 P4 P5 P6 P7 P8 )
TCASE(9, p0 p1 p2 p3 p4 p5 p6 p7 p8 p9, P0 P1 P2 P3 P4 P5 P6 P7 P8 P9)
int main(void)
{
TEST(0);
TEST(1);
TEST(2);
TEST(3);
TEST(4);
TEST(5);
TEST(6);
TEST(7);
TEST(8);
TEST(9);
if (errors)
abort ();
exit (0);
}
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