fix math test gen script

[libc-test] / src / multibyte / test.h

#include <stdio.h>
#include <stdarg.h>
#define error(...) test_error(__FILE__, __LINE__, __VA_ARGS__)

static int test_status;

static int test_error(const char *n, int l, const char *s, ...)
{
        va_list ap;

        if (test_status == 0)
                printf("FAIL\n");
        test_status = 1;
        printf(" ERROR %s:%d: ", n, l);
        va_start(ap, s);
        vprintf(s, ap);
        va_end(ap);
        return -1;
}