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# -*- Autoconf -*-
AC_DEFUN([RUBY_CHECK_VA_COPY], [
if test "x$rb_cv_va_copy" = x; then
AC_TRY_RUN(
[#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#define CONFTEST_VA_COPY(dst, src) $2
void
conftest(int n, ...)
{
va_list ap, ap2;
int i;
va_start(ap, n);
CONFTEST_VA_COPY(ap2, ap);
for (i = 0; i < n; i++) if ((int)va_arg(ap, int) != n - i - 1) abort();
va_end(ap);
CONFTEST_VA_COPY(ap, ap2);
for (i = 0; i < n; i++) if ((int)va_arg(ap, int) != n - i - 1) abort();
va_end(ap);
va_end(ap2);
}
int
main()
{
conftest(10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
exit(0);
}],
rb_cv_va_copy="$1",
rb_cv_va_copy="",
rb_cv_va_copy="")dnl
fi
])dnl
dnl
|
