void
TestVariadicMacros_run(TestBatch *batch)
{
    char buf[10];
    chaz_bool_t really_has_var_macs = false;

#if defined(HAS_ISO_VARIADIC_MACROS) || defined(HAS_GNUC_VARIADIC_MACROS)
  #ifdef HAS_VARIADIC_MACROS
    PASS(batch, "#defines agree");
  #else 
    FAIL(batch, 0, "#defines agree");
  #endif
#else
    SKIP_REMAINING(batch, "No variadic macro support");
#endif


#ifdef HAS_ISO_VARIADIC_MACROS
 #define ISO_TEST(buffer, fmt, ...) \
    sprintf(buffer, fmt, __VA_ARGS__)
    really_has_var_macs = true;
    ISO_TEST(buf, "%s", "iso");
    TEST_STR_EQ(batch, buf, "iso", "ISO variadic macros work");
#else
    SKIP(batch, "No ISO variadic macros");
#endif

#ifdef HAS_GNUC_VARIADIC_MACROS
 #define GNU_TEST(buffer, fmt, args...) \
    sprintf(buffer, fmt, ##args )
    really_has_var_macs = true;
    GNU_TEST(buf, "%s", "gnu");
    TEST_STR_EQ(batch, buf, "gnu", "GNUC variadic macros work");
#else
    SKIP(batch, "No GNUC variadic macros");
#endif

    TEST_TRUE(batch, really_has_var_macs, "either ISO or GNUC");
}
static void
S_run_tests(void) {
    char buf[10];
    int really_has_var_macs = false;

#if defined(HAS_ISO_VARIADIC_MACROS) || defined(HAS_GNUC_VARIADIC_MACROS)
  #ifdef HAS_VARIADIC_MACROS
    PASS("#defines agree");
  #else
    FAIL(0, "#defines agree");
  #endif
#else
    SKIP_REMAINING("No variadic macro support");
    return;
#endif


#ifdef HAS_ISO_VARIADIC_MACROS
 #define ISO_TEST(buffer, fmt, ...) \
    sprintf(buffer, fmt, __VA_ARGS__)
    really_has_var_macs = true;
    ISO_TEST(buf, "%s", "iso");
    STR_EQ(buf, "iso", "ISO variadic macros work");
#else
    SKIP("No ISO variadic macros");
#endif

#ifdef HAS_GNUC_VARIADIC_MACROS
 #define GNU_TEST(buffer, fmt, args...) \
    sprintf(buffer, fmt, ##args )
    really_has_var_macs = true;
    GNU_TEST(buf, "%s", "gnu");
    STR_EQ(buf, "gnu", "GNUC variadic macros work");
#else
    SKIP("No GNUC variadic macros");
#endif

    OK(really_has_var_macs, "either ISO or GNUC");
}