Viewing file:  va-arg-pack-1.c (2.56 KB) -rw-r--r--
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/* __builtin_va_arg_pack () builtin tests. */
#include <stdarg.h>
extern void abort (void);
int v1 = 8;
long int v2 = 3;
void *v3 = (void *) &v2;
struct A { char c[16]; } v4 = { "foo" };
long double v5 = 40;
char seen[20];
int cnt;
__attribute__ ((noinline)) int
foo1 (int x, int y, ...)
{
int i;
long int l;
void *v;
struct A a;
long double ld;
va_list ap;
va_start (ap, y);
if (x < 0 || x >= 20 || seen[x])
abort ();
seen[x] = ++cnt;
if (y != 6)
abort ();
i = va_arg (ap, int);
if (i != 5)
abort ();
switch (x)
{
case 0:
i = va_arg (ap, int);
if (i != 9 || v1 != 9)
abort ();
a = va_arg (ap, struct A);
if (__builtin_memcmp (a.c, v4.c, sizeof (a.c)) != 0)
abort ();
v = (void *) va_arg (ap, struct A *);
if (v != (void *) &v4)
abort ();
l = va_arg (ap, long int);
if (l != 3 || v2 != 4)
abort ();
break;
case 1:
ld = va_arg (ap, long double);
if (ld != 41 || v5 != ld)
abort ();
i = va_arg (ap, int);
if (i != 8)
abort ();
v = va_arg (ap, void *);
if (v != &v2)
abort ();
break;
case 2:
break;
default:
abort ();
}
va_end (ap);
return x;
}
__attribute__ ((noinline)) int
foo2 (int x, int y, ...)
{
long long int ll;
void *v;
struct A a, b;
long double ld;
va_list ap;
va_start (ap, y);
if (x < 0 || x >= 20 || seen[x])
abort ();
seen[x] = ++cnt | 64;
if (y != 10)
abort ();
switch (x)
{
case 11:
break;
case 12:
ld = va_arg (ap, long double);
if (ld != 41 || v5 != 40)
abort ();
a = va_arg (ap, struct A);
if (__builtin_memcmp (a.c, v4.c, sizeof (a.c)) != 0)
abort ();
b = va_arg (ap, struct A);
if (__builtin_memcmp (b.c, v4.c, sizeof (b.c)) != 0)
abort ();
v = va_arg (ap, void *);
if (v != &v2)
abort ();
ll = va_arg (ap, long long int);
if (ll != 16LL)
abort ();
break;
case 2:
break;
default:
abort ();
}
va_end (ap);
return x + 8;
}
__attribute__ ((noinline)) int
foo3 (void)
{
return 6;
}
extern inline __attribute__ ((always_inline, gnu_inline)) int
bar (int x, ...)
{
if (x < 10)
return foo1 (x, foo3 (), 5, __builtin_va_arg_pack ());
return foo2 (x, foo3 () + 4, __builtin_va_arg_pack ());
}
int
main (void)
{
if (bar (0, ++v1, v4, &v4, v2++) != 0)
abort ();
if (bar (1, ++v5, 8, v3) != 1)
abort ();
if (bar (2) != 2)
abort ();
if (bar (v1 + 2) != 19)
abort ();
if (bar (v1 + 3, v5--, v4, v4, v3, 16LL) != 20)
abort ();
return 0;
}
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