tccelf.c: write section headers before sections

[tinycc.git] / tests / tcctest.c

/*
 * TCC auto test program
 */
#include "config.h"

/* identify the configured reference compiler in use */
#define CC_gcc 1
#define CC_clang 2
#define CC_tcc 3

/* Unfortunately, gcc version < 3 does not handle that! */
#define ALL_ISOC99

/* only gcc 3 handles _Bool correctly */
#define BOOL_ISOC99

/* __VA_ARGS__ and __func__ support */
#define C99_MACROS

#ifndef __TINYC__
typedef __SIZE_TYPE__ uintptr_t;
#endif

#if defined(_WIN32) \
    || (defined(__arm__) \
        && (defined(__FreeBSD__) \
         || defined(__OpenBSD__) \
         || defined(__NetBSD__) \
         || defined __ANDROID__))
#define LONG_LONG_FORMAT "%lld"
#define ULONG_LONG_FORMAT "%llu"
#define XLONG_LONG_FORMAT "%llx"
#else
#define LONG_LONG_FORMAT "%Ld"
#define ULONG_LONG_FORMAT "%Lu"
#define XLONG_LONG_FORMAT "%Lx"
#endif

// MinGW has 80-bit rather than 64-bit long double which isn't compatible with TCC or MSVC
#if defined(_WIN32) && defined(__GNUC__)
#define LONG_DOUBLE double
#define LONG_DOUBLE_LITERAL(x) x
#else
#define LONG_DOUBLE long double
#define LONG_DOUBLE_LITERAL(x) x ## L
#endif

/* test various include syntaxes */

#define TCCLIB_INC <tcclib.h>
#define TCCLIB_INC1 <tcclib
#define TCCLIB_INC2 h>
#define TCCLIB_INC3 "tcclib.h"

#include TCCLIB_INC

#include TCCLIB_INC1.TCCLIB_INC2

#include TCCLIB_INC1.h>

#include TCCLIB_INC3

#include <tcclib.h>

#include "tcclib.h"

#include "tcctest.h"

/* Test two more ways to include a file named like a pp-number */
#define INC(name) <tests/name.h>
#define funnyname 42test.h
#define incdir tests/
#ifdef __clang__
/* clang's preprocessor is broken in this regard and adds spaces
   to the tokens 'incdir' and 'funnyname' when expanding */
#define incname <tests/42test.h>
#else
#define incname < incdir funnyname >
#endif
#define __stringify(x) #x
#define stringify(x) __stringify(x)
#include INC(42test)
#include incname
#include stringify(funnyname)

int puts(const char *s);
void *alloca(size_t size);

int fib(int n);
void num(int n);
void forward_ref(void);
int isid(int c);

/* Line joining happens before tokenization, so the following
   must be parsed as ellipsis.  */
void funny_line_continuation (int, ..\
. );

#define A 2
#define N 1234 + A
#define pf printf
#define M1(a, b)  (a) + (b)

#define str\
(s) # s
#define glue(a, b) a ## b
#define xglue(a, b) glue(a, b)
#define HIGHLOW "hello"
#define LOW LOW ", world"

static int onetwothree = 123;
#define onetwothree4 onetwothree
#define onetwothree xglue(onetwothree,4)

#define min(a, b) ((a) < (b) ? (a) : (b))

#ifdef C99_MACROS
#define dprintf(level,...) printf(__VA_ARGS__)
#endif

/* gcc vararg macros */
#define dprintf1(level, fmt, args...) printf(fmt, ## args)

#define MACRO_NOARGS()

#define TEST_CALL(f, ...) f(__VA_ARGS__)
#define TEST_CONST()      123

#define AAA 3
#undef AAA
#define AAA 4

#if 1
#define B3 1
#elif 1
#define B3 2
#elif 0
#define B3 3
#else
#define B3 4
#endif

#define __INT64_C(c)    c ## LL
#define INT64_MIN       (-__INT64_C(9223372036854775807)-1)

int qq(int x)
{
    return x + 40;
}
#define qq(x) x

#define spin_lock(lock) do { } while (0)
#define wq_spin_lock spin_lock
#define TEST2() wq_spin_lock(a)

void macro_test(void)
{
    pf("N=%d\n", N);
    printf("aaa=%d\n", AAA);

    printf("min=%d\n", min(1, min(2, -1)));

    printf("s1=%s\n", glue(HIGH, LOW));
    printf("s2=%s\n", xglue(HIGH, LOW));
    printf("s3=%s\n", str("c"));
    printf("s4=%s\n", str(a1));
    printf("B3=%d\n", B3);

    printf("onetwothree=%d\n", onetwothree);

#ifdef A
    printf("A defined\n");
#endif
#ifdef B
    printf("B defined\n");
#endif
#ifdef A
    printf("A defined\n");
#else
    printf("A not defined\n");
#endif
#ifdef B
    printf("B defined\n");
#else
    printf("B not defined\n");
#endif

#ifdef A
    printf("A defined\n");
#ifdef B
    printf("B1 defined\n");
#else
    printf("B1 not defined\n");
#endif
#else
    printf("A not defined\n");
#ifdef B
    printf("B2 defined\n");
#else
    printf("B2 not defined\n");
#endif
#endif

#if 1+1
    printf("test true1\n");
#endif
#if 0
    printf("test true2\n");
#endif
#if 1-1
    printf("test true3\n");
#endif
#if defined(A)
    printf("test trueA\n");
#endif
#if defined(B)
    printf("test trueB\n");
#endif

#if 0
    printf("test 0\n");
#elif 0
    printf("test 1\n");
#elif 2
    printf("test 2\n");
#else
    printf("test 3\n");
#endif

    MACRO_NOARGS();

    printf("%d\n", TEST_CALL(TEST_CONST));

    /* not strictly preprocessor, but we test it there */
#ifdef C99_MACROS
    printf("__func__ = %s\n", __func__);
    dprintf(1, "vaarg=%d\n", 1);
#endif
    dprintf1(1, "vaarg1\n");
    dprintf1(1, "vaarg1=%d\n", 2);
    dprintf1(1, "vaarg1=%d %d\n", 1, 2);

    /* gcc extension */
    printf("func='%s'\n", __FUNCTION__);

    /* complicated macros in glibc */
    printf("INT64_MIN=" LONG_LONG_FORMAT "\n", INT64_MIN);
    {
        int a;
        a = 1;
        glue(a+, +);
        printf("a=%d\n", a);
        glue(a <, <= 2);
        printf("a=%d\n", a);
    }
    
    /* macro function with argument outside the macro string */
#define MF_s MF_hello
#define MF_hello(msg) printf("%s\n",msg)

#define MF_t printf("tralala\n"); MF_hello

    MF_s("hi");
    MF_t("hi");
    
    /* test macro substitution inside args (should not eat stream) */
    printf("qq=%d\n", qq(qq)(2));

    /* test zero argument case. NOTE: gcc 2.95.x does not accept a
       null argument without a space. gcc 3.2 fixes that. */

#define qq1(x) 1
    printf("qq1=%d\n", qq1( ));

    /* comment with stray handling *\
/
       /* this is a valid *\/ comment */
       /* this is a valid comment *\*/
    //  this is a valid\
comment

    /* test function macro substitution when the function name is
       substituted */
    TEST2();

    /* And again when the name and parentheses are separated by a
       comment.  */
    TEST2 /* the comment */ ();

    printf("basefromheader %s\n", get_basefile_from_header());
    printf("base %s\n", __BASE_FILE__);
    {
      /* Some compilers (clang) prepend './' to __FILE__ from included
         files.  */
      const char *fn = get_file_from_header();
      if (fn[0] == '.' && fn[1] == '/')
        fn += 2;
      printf("filefromheader %s\n", fn);
    }
    printf("file %s\n", __FILE__);

    /* Check that funnily named include was in fact included */
    have_included_42test_h = 1;
    have_included_42test_h_second = 1;
    have_included_42test_h_third = 1;

    /* Check that we don't complain about stray \ here */
    printf("print a backslash: %s\n", stringify(\\));
}


static void print_num(char *fn, int line, int num) {
    printf("fn %s, line %d, num %d\n", fn, line, num);
}

void recursive_macro_test(void)
{

#define ELF32_ST_TYPE(val)              ((val) & 0xf)
#define ELF32_ST_INFO(bind, type)       (((bind) << 4) + ((type) & 0xf))
#define STB_WEAK        2               /* Weak symbol */
#define ELFW(type) ELF##32##_##type
    printf("%d\n", ELFW(ST_INFO)(STB_WEAK, ELFW(ST_TYPE)(123)));

#define WRAP(x) x
    
#define print_num(x) print_num(__FILE__,__LINE__,x)
    print_num(123);
    WRAP(print_num(123));
    WRAP(WRAP(print_num(123)));

static struct recursive_macro { int rm_field; } G;
#define rm_field (G.rm_field)
    printf("rm_field = %d\n", rm_field);
    printf("rm_field = %d\n", WRAP(rm_field));
    WRAP((printf("rm_field = %d %d\n", rm_field, WRAP(rm_field))));
}

#if __TINYC__
int op(a, b)
{
    return a / b;
}

int ret(a)
{
    if (a == 2)
        return 1;
    if (a == 3)
        return 2;
    return 0;
}
#endif

#if !defined(__TINYC__) && (__GNUC__ >= 8)
/* Old GCCs don't regard "foo"[1] as constant, even in GNU dialect. */
#define CONSTANTINDEXEDSTRLIT
#endif
char str_ag1[] = "b";
char str_ag2[] = { "b" };
/*char str_bg1[] = ("cccc"); GCC accepts this with pedantic warning, TCC not */
#ifdef CONSTANTINDEXEDSTRLIT
char str_ag3[] = { "ab"[1], 0 };
char str_x[2] = { "xy" "z"[2], 0 };
#endif
char *str_ar[] = { "one", "two" };
struct str_SS {unsigned char a[3], b; };
struct str_SS str_sinit15 = { "r" };
struct str_SS str_sinit16[] = { { "q" }, 2 };

static void string_test2()
{
    char *p = "hello";
    char a3[2] = { "p" };
    char a4[2] = { "ab" "c"[2], 0 };
    char *pa1 = "def" + 1;
    char *pa2 = { "xyz" + 1 };
    int i = 0;
    struct str_SS ss = { { [0 ... 1] = 'a' }, 0 };
#ifndef CONSTANTINDEXEDSTRLIT
    char str_ag3[] = { "ab"[1], 0 };
    char str_x[2] = { "xy" "z"[2], 0 };
#endif
    puts("string_test2");
    puts(str_ag1);
    puts(str_ag2);
    /*puts(str_bg1);*/
    puts(str_ag3);
    puts(str_x);
    puts(str_sinit15.a);
    puts(str_sinit16[0].a);
    puts(a3);
    puts(a4);
    puts(p);
    puts("world");
    printf("%s\n", "bla");
    puts(str_ar[0]);
    puts(str_ar[1]);
    puts(ss.a);
    puts(i >= 0 ? "one" : "two");
    puts(pa1);
    puts(pa2);
}

void ps(const char *s)
{
    int c;
    while (1) {
        c = *s;
        if (c == 0)
            break;
        printf("%c", c);
        s++;
    }
}

const char foo1_string[] = "\
bar\n\
test\14\
1";

void string_test()
{
    unsigned int b;
    printf("string:\n");
    printf("\141\1423\143\n");/* dezdez test */
    printf("\x41\x42\x43\x3a\n");
    printf("c=%c\n", 'r');
    printf("wc=%C 0x%lx %C\n", L'a', L'\x1234', L'c');
    printf("foo1_string='%s'\n", foo1_string);
#if 0
    printf("wstring=%S\n", L"abc");
    printf("wstring=%S\n", L"abc" L"def" "ghi");
    printf("'\\377'=%d '\\xff'=%d\n", '\377', '\xff');
    printf("L'\\377'=%d L'\\xff'=%d\n", L'\377', L'\xff');
#endif
    ps("test\n");
    b = 32;
    while ((b = b + 1) < 96) {
        printf("%c", b);
    }
    printf("\n");
    printf("fib=%d\n", fib(33));
    b = 262144;
    while (b != 0x80000000) {
        num(b);
        b = b * 2;
    }
    string_test2();
}


void if1t(int n, int a, int b, int c)
{
    if (a && b) printf("if1t: %d 1 %d %d\n", n, a, b);
    if (a && !b) printf("if1t: %d 2 %d %d\n", n, a, b);
    if (!a && b) printf("if1t: %d 3 %d %d\n", n, a, b);
    if (!a && !b) printf("if1t: %d 4 %d %d\n", n, a, b);
    if (a || b) printf("if1t: %d 5 %d %d\n", n, a, b);
    if (a || !b) printf("if1t: %d 6 %d %d\n", n, a, b);
    if (!a || b) printf("if1t: %d 7 %d %d\n", n, a, b);
    if (!a || !b) printf("if1t: %d 8 %d %d\n", n, a, b);
    if (a && b || c) printf("if1t: %d 9 %d %d %d\n", n, a, b, c);
    if (a || b && c) printf("if1t: %d 10 %d %d %d\n", n, a, b, c);
    if (a > b - 1 && c) printf("if1t: %d 11 %d %d %d\n", n, a, b, c);
    if (a > b - 1 || c) printf("if1t: %d 12 %d %d %d\n", n, a, b, c);
    if (a > 0 && 1) printf("if1t: %d 13 %d %d %d\n", n, a, b, c);
    if (a > 0 || 0) printf("if1t: %d 14 %d %d %d\n", n, a, b, c);
}

void if2t(void)
{
    if (0 && 1 || printf("if2t:ok\n") || 1)
      printf("if2t:ok2\n");
    printf("if2t:ok3\n");
}

void if3t(void)
{
    volatile long long i = 1;
    if (i <= 18446744073709551615ULL)
      ;
    else
      printf ("if3t:wrong 1\n");
}

void if_test(void)
{
    if1t(1, 0, 0, 0);
    if1t(2, 0, 3, 0);
    if1t(3, 2, 0, 0);
    if1t(4, 2, 3, 0);
    if2t();
    if3t();
}

void loop_test()
{
    int i;
    i = 0;
    while (i < 10)
        printf("%d", i++);
    printf("\n");
    for(i = 0; i < 10;i++)
        printf("%d", i);
    printf("\n");
    i = 0;
    do {
        printf("%d", i++);
    } while (i < 10);
    printf("\n");

    char count = 123;
    /* c99 for loop init test */
    for (size_t count = 1; count < 3; count++)
        printf("count=%d\n", count);
    printf("count = %d\n", count);

    /* break/continue tests */
    i = 0;
    while (1) {
        if (i == 6)
            break;
        i++;
        if (i == 3)
            continue;
        printf("%d", i);
    }
    printf("\n");

    /* break/continue tests */
    i = 0;
    do {
        if (i == 6)
            break;
        i++;
        if (i == 3)
            continue;
        printf("%d", i);
    } while(1);
    printf("\n");

    for(i = 0;i < 10;i++) {
        if (i == 3)
            continue;
        printf("%d", i);
    }
    printf("\n");
}

typedef int typedef_and_label;

void goto_test()
{
    int i;
    static void *label_table[3] = { &&label1, &&label2, &&label3 };
    struct {
        int bla;
        /* This needs to parse as typedef, not as label.  */
        typedef_and_label : 32;
    } y = {1};

    printf("\ngoto:\n");
    i = 0;
    /* This is a normal decl.  */
    typedef_and_label x;
    /* This needs to parse as label, not as start of decl.  */
 typedef_and_label:
 s_loop:
    if (i >= 10) 
        goto s_end;
    printf("%d", i);
    i++;
    goto s_loop;
 s_end:
    printf("\n");

    /* we also test computed gotos (GCC extension) */
    for(i=0;i<3;i++) {
        goto *label_table[i];
    label1:
        printf("label1\n");
        goto next;
    label2:
        printf("label2\n");
        goto next;
    label3:
        printf("label3\n");
    next: ;
    }
}

enum {
    E0,
    E1 = 2,
    E2 = 4,
    E3,
    E4,
};

enum test {
    E5 = 1000,
};

struct S_enum {
    enum {E6 = 42, E7, E8} e:8;
};

enum ELong {
    /* This is either 0 on L32 machines, or a large number
       on L64 machines.  We should be able to store this.  */
    EL_large = ((unsigned long)0xf000 << 31) << 1,
};

enum { BIASU = -1U<<31 };
enum { BIASS = -1 << 31 };

static int getint(int i)
{
  if (i)
    return 0;
  else
    return (int)(-1U << 31);
}

void enum_test()
{
    enum test b1;
    /* The following should give no warning */
    unsigned *p = &b1;
    struct S_enum s = {E7};
    printf("%d %d %d %d %d %d %d\n", s.e,
           E0, E1, E2, E3, E4, E5);
    b1 = 1;
    printf("b1=%d\n", b1);
    printf("enum large: %ld\n", EL_large);

    if (getint(0) == BIASU)
      printf("enum unsigned: ok\n");
    else
      printf("enum unsigned: wrong\n");
    if (getint(0) == BIASS)
      printf("enum unsigned: ok\n");
    else
      printf("enum unsigned: wrong\n");
}

typedef int *my_ptr;

typedef int mytype1;
typedef int mytype2;

void typedef_test()
{
    my_ptr a;
    mytype1 mytype2;
    int b;

    a = &b;
    *a = 1234;
    printf("a=%d\n", *a);
    mytype2 = 2;
    printf("mytype2=%d\n", mytype2);
}

void forward_test()
{
    forward_ref();
    forward_ref();
}


void forward_ref(void)
{
    printf("forward ok\n");
}

typedef struct struct1 {
    int f1;
    int f2, f3;
    union union1 {
        int v1;
        int v2;
    } u;
    char str[3];
} struct1;

struct struct2 {
    int a;
    char b;
};

union union2 {
    int w1;
    int w2;
};

struct struct1 st1, st2;

struct empty_mem {
    /* nothing */ ;
    int x;
};

int tab[3];
int tab2[3][2];

int g;

void f1(int g)
{
    printf("g1=%d\n", g);
}

void scope_test()
{
    g = 2;
    f1(1);
    printf("g2=%d\n", g);
    {
        int g;
        g = 3;
        printf("g3=%d\n", g);
        {
            int g;
            g = 4;
            printf("g4=%d\n", g);
        }
    }
    printf("g5=%d\n", g);
}

int st2_i;
int *st2_p = &st2_i;
void scope2_test()
{
    char a[50];
    st2_i = 42;
    for (int st2_i = 1; st2_i < 10; st2_i++) {
        extern int st2_i;
        st2_i++;
        printf("exloc: %d\n", st2_i);
    }
    printf("exloc: %d\n", *st2_p);
}

/* C has tentative definition, and they may be repeated.  */
extern int st_global1;
int st_global1=42;
extern int st_global1;
int st_global1;
extern int st_global2;
int st_global2;
extern int st_global2;
int st_global2;

void array_test()
{
    int i, j, a[4];

    printf("sizeof(a) = %d\n", sizeof(a));
    printf("sizeof(\"a\") = %d\n", sizeof("a"));
#ifdef C99_MACROS
    printf("sizeof(__func__) = %d\n", sizeof(__func__));
#endif
    printf("sizeof tab %d\n", sizeof(tab));
    printf("sizeof tab2 %d\n", sizeof tab2);
    tab[0] = 1;
    tab[1] = 2;
    tab[2] = 3;
    printf("%d %d %d\n", tab[0], tab[1], tab[2]);
    for(i=0;i<3;i++)
        for(j=0;j<2;j++)
            tab2[i][j] = 10 * i + j;
    for(i=0;i<3*2;i++) {
        printf(" %3d", ((int *)tab2)[i]);
    }
    printf("\n");
    printf("sizeof(size_t)=%d\n", sizeof(size_t));
    printf("sizeof(ptrdiff_t)=%d\n", sizeof(ptrdiff_t));
}

void expr_test()
{
    int a, b;
    a = 0;
    printf("%d\n", a += 1);
    printf("%d\n", a -= 2);
    printf("%d\n", a *= 31232132);
    printf("%d\n", a /= 4);
    printf("%d\n", a %= 20);
    printf("%d\n", a &= 6);
    printf("%d\n", a ^= 7);
    printf("%d\n", a |= 8);
    printf("%d\n", a >>= 3);
    printf("%d\n", a <<= 4);

    a = 22321;
    b = -22321;
    printf("%d\n", a + 1);
    printf("%d\n", a - 2);
    printf("%d\n", a * 312);
    printf("%d\n", a / 4);
    printf("%d\n", b / 4);
    printf("%d\n", (unsigned)b / 4);
    printf("%d\n", a % 20);
    printf("%d\n", b % 20);
    printf("%d\n", (unsigned)b % 20);
    printf("%d\n", a & 6);
    printf("%d\n", a ^ 7);
    printf("%d\n", a | 8);
    printf("%d\n", a >> 3);
    printf("%d\n", b >> 3);
    printf("%d\n", (unsigned)b >> 3);
    printf("%d\n", a << 4);
    printf("%d\n", ~a);
    printf("%d\n", -a);
    printf("%d\n", +a);

    printf("%d\n", 12 + 1);
    printf("%d\n", 12 - 2);
    printf("%d\n", 12 * 312);
    printf("%d\n", 12 / 4);
    printf("%d\n", 12 % 20);
    printf("%d\n", 12 & 6);
    printf("%d\n", 12 ^ 7);
    printf("%d\n", 12 | 8);
    printf("%d\n", 12 >> 2);
    printf("%d\n", 12 << 4);
    printf("%d\n", ~12);
    printf("%d\n", -12);
    printf("%d\n", +12);
    printf("%d %d %d %d\n", 
           isid('a'), 
           isid('g'), 
           isid('T'), 
           isid('('));
}

int isid(int c)
{
    return (c >= 'a' & c <= 'z') | (c >= 'A' & c <= 'Z') | c == '_';
}

/**********************/

int vstack[10], *vstack_ptr;

void vpush(int vt, int vc)
{
    *vstack_ptr++ = vt;
    *vstack_ptr++ = vc;
}

void vpop(int *ft, int *fc)
{
    *fc = *--vstack_ptr;
    *ft = *--vstack_ptr;
}

void expr2_test()
{
    int a, b;

    vstack_ptr = vstack;
    vpush(1432432, 2);
    vstack_ptr[-2] &= ~0xffffff80;
    vpop(&a, &b);
    printf("res= %d %d\n", a, b);
}

int const_len_ar[sizeof(1/0)]; /* div-by-zero, but in unevaluated context */

void constant_expr_test()
{
    int a;
    a = 3;
    printf("%d\n", a * 16);
    printf("%d\n", a * 1);
    printf("%d\n", a + 0);
    printf("%d\n", sizeof(const_len_ar));
}

int tab4[10];

void expr_ptr_test()
{
    int arr[10], *p, *q;
    int i = -1;

    p = tab4;
    q = tab4 + 10;
    printf("diff=%d\n", q - p);
    p++;
    printf("inc=%d\n", p - tab4);
    p--;
    printf("dec=%d\n", p - tab4);
    ++p;
    printf("inc=%d\n", p - tab4);
    --p;
    printf("dec=%d\n", p - tab4);
    printf("add=%d\n", p + 3 - tab4);
    printf("add=%d\n", 3 + p - tab4);

    /* check if 64bit support is ok */
    q = p = 0;
    q += i;
    printf("%p %p %ld\n", q, p, p-q);
    printf("%d %d %d %d %d %d\n",
           p == q, p != q, p < q, p <= q, p >= q, p > q);
    i = 0xf0000000;
    p += i;
    printf("%p %p %ld\n", q, p, p-q);
    printf("%d %d %d %d %d %d\n",
           p == q, p != q, p < q, p <= q, p >= q, p > q);
    p = (int *)((char *)p + 0xf0000000);
    printf("%p %p %ld\n", q, p, p-q);
    printf("%d %d %d %d %d %d\n",
           p == q, p != q, p < q, p <= q, p >= q, p > q);
    p += 0xf0000000;
    printf("%p %p %ld\n", q, p, p-q);
    printf("%d %d %d %d %d %d\n",
           p == q, p != q, p < q, p <= q, p >= q, p > q);
    {
        struct size12 {
            int i, j, k;
        };
        struct size12 s[2], *sp = s;
        int i, j;
        sp->i = 42;
        sp++;
        j = -1;
        printf("%d\n", sp[j].i);
    }
#ifdef __LP64__
    i = 1;
    p = (int*)0x100000000UL + i;
    i = ((long)p) >> 32;
    printf("largeptr: %p %d\n", p, i);
#endif
    p = &arr[0];
    q = p + 3;
    printf ("%d\n", (int)((p - q) / 3));
}

void expr_cmp_test()
{
    int a, b;
    a = -1;
    b = 1;
    printf("%d\n", a == a);
    printf("%d\n", a != a);

    printf("%d\n", a < b);
    printf("%d\n", a <= b);
    printf("%d\n", a <= a);
    printf("%d\n", b >= a);
    printf("%d\n", a >= a);
    printf("%d\n", b > a);

    printf("%d\n", (unsigned)a < b);
    printf("%d\n", (unsigned)a <= b);
    printf("%d\n", (unsigned)a <= a);
    printf("%d\n", (unsigned)b >= a);
    printf("%d\n", (unsigned)a >= a);
    printf("%d\n", (unsigned)b > a);
}

struct empty {
};

struct aligntest1 {
    char a[10];
};

struct aligntest2 {
    int a;
    char b[10];
};

struct aligntest3 {
    double a, b;
};

struct aligntest4 {
    double a[0];
};

struct __attribute__((aligned(16))) aligntest5
{
    int i;
};
struct aligntest6
{
    int i;
} __attribute__((aligned(16)));
struct aligntest7
{
    int i;
};
struct aligntest5 altest5[2];
struct aligntest6 altest6[2];
int pad1;
/* altest7 is correctly aligned to 16 bytes also with TCC,
   but __alignof__ returns the wrong result (4) because we
   can't store the alignment yet when specified on symbols
   directly (it's stored in the type so we'd need to make
   a copy of it). -- FIXED */
struct aligntest7 altest7[2] __attribute__((aligned(16)));

struct aligntest8
{
  int i;
} __attribute__((aligned(4096)));

struct Large {
    unsigned long flags;
    union {
        void *u1;
        int *u2;
    };

    struct {
        union {
            unsigned long index;
            void *freelist;
        };
        union {
            unsigned long counters;
            struct {
                int bla;
            };
        };
    };

    union {
        struct {
            long u3;
            long u4;
        };
        void *u5;
        struct {
            unsigned long compound_head;
            unsigned int compound_dtor;
            unsigned int compound_order;
        };
    };
} __attribute__((aligned(2 * sizeof(long))));

typedef unsigned long long __attribute__((aligned(4))) unaligned_u64;

struct aligntest9 {
    unsigned int buf_nr;
    unaligned_u64 start_lba;
};

struct aligntest10 {
    unsigned int buf_nr;
    unsigned long long start_lba;
};

void struct_test()
{
    struct1 *s;
    union union2 u;
    struct Large ls;

    printf("sizes: %d %d %d %d\n",
           sizeof(struct struct1),
           sizeof(struct struct2),
           sizeof(union union1),
           sizeof(union union2));
    printf("offsets: %d\n", (int)((char*)&st1.u.v1 - (char*)&st1));
    st1.f1 = 1;
    st1.f2 = 2;
    st1.f3 = 3;
    printf("st1: %d %d %d\n",
           st1.f1, st1.f2, st1.f3);
    st1.u.v1 = 1;
    st1.u.v2 = 2;
    printf("union1: %d\n", st1.u.v1);
    u.w1 = 1;
    u.w2 = 2;
    printf("union2: %d\n", u.w1);
    s = &st2;
    s->f1 = 3;
    s->f2 = 2;
    s->f3 = 1;
    printf("st2: %d %d %d\n",
           s->f1, s->f2, s->f3);
    printf("str_addr=%x\n", (int)(uintptr_t)st1.str - (int)(uintptr_t)&st1.f1);

    /* align / size tests */
    printf("aligntest1 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest1), __alignof__(struct aligntest1));
    printf("aligntest2 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest2), __alignof__(struct aligntest2));
    printf("aligntest3 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest3), __alignof__(struct aligntest3));
    printf("aligntest4 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest4), __alignof__(struct aligntest4));
    printf("aligntest5 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest5), __alignof__(struct aligntest5));
    printf("aligntest6 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest6), __alignof__(struct aligntest6));
    printf("aligntest7 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest7), __alignof__(struct aligntest7));
    printf("aligntest8 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest8), __alignof__(struct aligntest8));
    printf("aligntest9 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest9), __alignof__(struct aligntest9));
    printf("aligntest10 sizeof=%d alignof=%d\n",
           sizeof(struct aligntest10), __alignof__(struct aligntest10));
    printf("altest5 sizeof=%d alignof=%d\n",
           sizeof(altest5), __alignof__(altest5));
    printf("altest6 sizeof=%d alignof=%d\n",
           sizeof(altest6), __alignof__(altest6));
    printf("altest7 sizeof=%d alignof=%d\n",
           sizeof(altest7), __alignof__(altest7));
           
    /* empty structures (GCC extension) */
    printf("sizeof(struct empty) = %d\n", sizeof(struct empty));
    printf("alignof(struct empty) = %d\n", __alignof__(struct empty));

    printf("Large: sizeof=%d\n", sizeof(ls));
    memset(&ls, 0, sizeof(ls));
    ls.compound_head = 42;
    printf("Large: offsetof(compound_head)=%d\n", (int)((char*)&ls.compound_head - (char*)&ls));
}

/* simulate char/short return value with undefined upper bits */
static int __csf(int x) { return x; }
static void *_csf = __csf;
#define csf(t,n) ((t(*)(int))_csf)(n)

/* XXX: depend on endianness */
void char_short_test()
{
    int var1, var2;
    signed char var3;
    long long var4;

    var1 = 0x01020304;
    var2 = 0xfffefdfc;
    printf("s8=%d %d\n", 
           *(signed char *)&var1, *(signed char *)&var2);
    printf("u8=%d %d\n", 
           *(unsigned char *)&var1, *(unsigned char *)&var2);
    printf("s16=%d %d\n", 
           *(short *)&var1, *(short *)&var2);
    printf("u16=%d %d\n", 
           *(unsigned short *)&var1, *(unsigned short *)&var2);
    printf("s32=%d %d\n", 
           *(int *)&var1, *(int *)&var2);
    printf("u32=%d %d\n", 
           *(unsigned int *)&var1, *(unsigned int *)&var2);
    *(signed char *)&var1 = 0x08;
    printf("var1=%x\n", var1);
    *(short *)&var1 = 0x0809;
    printf("var1=%x\n", var1);
    *(int *)&var1 = 0x08090a0b;
    printf("var1=%x\n", var1);

    var1 = 0x778899aa;
    var4 = 0x11223344aa998877ULL;
    var1 = var3 = var1 + 1;
    var4 = var3 = var4 + 1;
    printf("promote char/short assign %d "LONG_LONG_FORMAT"\n", var1, var4);
    var1 = 0x778899aa;
    var4 = 0x11223344aa998877ULL;
    printf("promote char/short assign VA %d %d\n", var3 = var1 + 1, var3 = var4 + 1);
    printf("promote char/short cast VA %d %d\n", (signed char)(var1 + 1), (signed char)(var4 + 1));
#if !defined(__arm__)
    /* We can't really express GCC behaviour of return type promotion in
       the presence of undefined behaviour (like __csf is).  */
    var1 = csf(unsigned char,0x89898989);
    var4 = csf(signed char,0xabababab);
    printf("promote char/short funcret %d "LONG_LONG_FORMAT"\n", var1, var4);
    printf("promote char/short fumcret VA %d %d %d %d\n",
        csf(unsigned short,0xcdcdcdcd),
        csf(short,0xefefefef),
        csf(_Bool,0x33221100),
        csf(_Bool,0x33221101));
#endif
    var3 = -10;
    var1 = (signed char)(unsigned char)(var3 + 1);
    var4 = (signed char)(unsigned char)(var3 + 1);
    printf("promote multicast (char)(unsigned char) %d "LONG_LONG_FORMAT"\n", var1, var4);
    var4 = 0x11223344aa998877ULL;
    var4 = (unsigned)(int)(var4 + 1);
    printf("promote multicast (unsigned)(int) "LONG_LONG_FORMAT"\n", var4);
    var4 = 0x11223344bbaa9988ULL;
    var4 = (unsigned)(signed char)(var4 + 1);
    printf("promote multicast (unsigned)(char) "LONG_LONG_FORMAT"\n", var4);
}

/******************/

typedef struct Sym {
    int v;
    int t;
    int c;
    struct Sym *next;
    struct Sym *prev;
} Sym;

#define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
#define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))

static int toupper1(int a)
{
    return TOUPPER(a);
}

static unsigned int calc_vm_flags(unsigned int prot)
{
  unsigned int prot_bits;
  /* This used to segfault in some revisions: */
  prot_bits = ((0x1==0x00000001)?(prot&0x1):(prot&0x1)?0x00000001:0);
  return prot_bits;
}

enum cast_enum { FIRST, LAST };

static void tst_cast(enum cast_enum ce)
{
    printf("%d\n", ce);
}

void bool_test()
{
    int *s, a, b, t, f, i;

    a = 0;
    s = (void*)0;
    printf("!s=%d\n", !s);

    if (!s || !s[0])
        a = 1;
    printf("a=%d\n", a);

    printf("a=%d %d %d\n", 0 || 0, 0 || 1, 1 || 1);
    printf("a=%d %d %d\n", 0 && 0, 0 && 1, 1 && 1);
    printf("a=%d %d\n", 1 ? 1 : 0, 0 ? 1 : 0);
#if 1 && 1
    printf("a1\n");
#endif
#if 1 || 0
    printf("a2\n");
#endif
#if 1 ? 0 : 1
    printf("a3\n");
#endif
#if 0 ? 0 : 1
    printf("a4\n");
#endif

    a = 4;
    printf("b=%d\n", a + (0 ? 1 : a / 2));

    /* test register spilling */
    a = 10;
    b = 10;
    a = (a + b) * ((a < b) ?
                   ((b - a) * (a - b)): a + b);
    printf("a=%d\n", a);

    /* test complex || or && expressions */
    t = 1;
    f = 0;
    a = 32;
    printf("exp=%d\n", f == (32 <= a && a <= 3));
    printf("r=%d\n", (t || f) + (t && f));

    /* check that types of casted &&/|| are preserved (here the unsignedness) */
    t = 1;
    printf("type of bool: %d\n", (int) ( (~ ((unsigned int) (t && 1))) / 2) );
    tst_cast(t >= 0 ? FIRST : LAST);

    printf("type of cond: %d\n", (~(t ? 0U : (unsigned int)0)) / 2 );
    /* test ? : cast */
    {
        int aspect_on;
        int aspect_native = 65536;
        double bfu_aspect = 1.0;
        int aspect;
        for(aspect_on = 0; aspect_on < 2; aspect_on++) {
            aspect=aspect_on?(aspect_native*bfu_aspect+0.5):65535UL;
            printf("aspect=%d\n", aspect);
        }
    }

    /* test ? : GCC extension */
    {
        static int v1 = 34 ? : -1; /* constant case */
        static int v2 = 0 ? : -1; /* constant case */
        int a = 30;
        
        printf("%d %d\n", v1, v2);
        printf("%d %d\n", a - 30 ? : a * 2, a + 1 ? : a * 2);
    }

    /* again complex expression */
    for(i=0;i<256;i++) {
        if (toupper1 (i) != TOUPPER (i))
            printf("error %d\n", i);
    }
    printf ("bits = 0x%x\n", calc_vm_flags (0x1));
}

extern int undefined_function(void);
extern int defined_function(void);

#ifdef __clang__
int undefined_function(void) {}
#endif

static inline void refer_to_undefined(void)
{
  undefined_function();
}

void optimize_out_test(void)
{
  int i = 0 ? undefined_function() : defined_function();
  printf ("oo:%d\n", i);
  int j = 1 ? defined_function() : undefined_function();
  printf ("oo:%d\n", j);
  if (0)
    printf("oo:%d\n", undefined_function());
  else
    printf("oo:%d\n", defined_function());
  if (1)
    printf("oo:%d\n", defined_function());
  else
    printf("oo:%d\n", undefined_function());
  while (1) {
      printf("oow:%d\n", defined_function());
      break;
      printf("oow:%d\n", undefined_function());
  }
  j = 1;
  /* Following is a switch without {} block intentionally.  */
  switch (j)
    case 1: break;
  printf ("oos:%d\n", defined_function());
  /* The following break shouldn't lead to disabled code after
     the while.  */
  while (1)
    break;
  printf ("ool1:%d\n", defined_function());
  /* Same for the other types of loops.  */
  do
    break;
  while (1);
  printf ("ool2:%d\n", defined_function());
  for (;;)
    break;
  printf ("ool3:%d\n", defined_function());
  /* Normal {} blocks without controlling statements
     shouldn't reactivate code emission */
  while (1) {
        {
          break;
        }
      printf ("ool4:%d\n", undefined_function());
  }
  j = 1;
  while (j) {
      if (j == 0)
        break; /* this break shouldn't disable code outside the if. */
      printf("ool5:%d\n", defined_function());
      j--;
  }

  j = 1;
  while (j) {
      if (1)
        j--;
      else
        breakhere: break;
      printf("ool6:%d\n", defined_function());
      goto breakhere;
  }
  j = 1;
  while (j) {
      j--;
      continue;
      printf("ool7:%d\n", undefined_function());
  }

  /* Test that constants in logical && are optimized: */
  i = 0 && undefined_function();
  i = defined_function() && 0 && undefined_function();
  if (0 && undefined_function())
    undefined_function();
  if (defined_function() && 0)
    undefined_function();
  if (0 && 0)
    undefined_function();
  if (defined_function() && 0 && undefined_function())
    undefined_function();
  /* The same for || : */
  i = 1 || undefined_function();
  i = defined_function() || 1 || undefined_function();
  if (1 || undefined_function())
    ;
  else
    undefined_function();
  if (defined_function() || 1)
    ;
  else
    undefined_function();
  if (1 || 1)
    ;
  else
    undefined_function();
  if (defined_function() || 1 || undefined_function())
    ;
  else
    undefined_function();

  if (defined_function() && 0)
    refer_to_undefined();

  if (0) {
      (void)sizeof( ({
                     do { } while (0);
                     0;
                     }) );
      undefined_function();
  }

  if (0) {
      switch (defined_function()) {
          case 0: undefined_function(); break;
          default: undefined_function(); break;
      }
  }

  /* Leave the "if(1)return; printf()" in this order and last in the function */
  if (1)
    return;
  printf ("oor:%d\n", undefined_function());
}

int defined_function(void)
{
  static int i = 40;
  return i++;
}

/* GCC accepts that */
static int tab_reinit[];
static int tab_reinit[10];

static int tentative_ar[];
static int tentative_ar[] = {1,2,3};

//int cinit1; /* a global variable can be defined several times without error ! */
int cinit1; 
int cinit1; 
int cinit1 = 0;
int *cinit2 = (int []){3, 2, 1};

void compound_literal_test(void)
{
    int *p, i;
    char *q, *q3;

    p = (int []){1, 2, 3};
    for(i=0;i<3;i++)
        printf(" %d", p[i]);
    printf("\n");

    for(i=0;i<3;i++)
        printf("%d", cinit2[i]);
    printf("\n");

    q = "tralala1";
    printf("q1=%s\n", q);

    q = (char *){ "tralala2" };
    printf("q2=%s\n", q);

    q3 = (char *){ q };
    printf("q3=%s\n", q3);

    q = (char []){ "tralala3" };
    printf("q4=%s\n", q);

#ifdef ALL_ISOC99
    p = (int []){1, 2, cinit1 + 3};
    for(i=0;i<3;i++)
        printf(" %d", p[i]);
    printf("\n");

    for(i=0;i<3;i++) {
        p = (int []){1, 2, 4 + i};
        printf("%d %d %d\n", 
               p[0],
               p[1],
               p[2]);
    }
#endif
}


#if __TINYC__

/* K & R protos */

kr_func1(a, b)
{
    return a + b;
}

int kr_func2(a, b)
{
    return a + b;
}

kr_test()
{
    printf("func1=%d\n", kr_func1(3, 4));
    printf("func2=%d\n", kr_func2(3, 4));
    return 0;
}

/* We try to handle this syntax.  Make at least sure it doesn't segfault.  */
char invalid_function_def()[] {return 0;}

#else
# define kr_test() printf("func1=7\nfunc2=7\n")
#endif

void num(int n)
{
    char *tab, *p;
    tab = (char*)malloc(20); 
    p = tab;
    while (1) {
        *p = 48 + (n % 10);
        p++;
        n = n / 10;
        if (n == 0)
            break;
    }
    while (p != tab) {
        p--;
        printf("%c", *p);
    }
    printf("\n");
    free(tab);
}

/* structure assignment tests */
struct structa1 {
    int f1;
    char f2;
};

void struct_assign_test1(struct structa1 s1, int t, float f)
{
    printf("%d %d %d %f\n", s1.f1, s1.f2, t, f);
}

struct structa1 struct_assign_test2(struct structa1 s1, int t)
{
    s1.f1 += t;
    s1.f2 -= t;
    return s1;
}

void struct_assign_test(void)
{
    struct S {
      struct structa1 lsta1, lsta2;
      int i;
    } s = {{1,2}, {3,4}}, *ps;
    
    ps = &s;
    ps->i = 4;

    struct_assign_test1(ps->lsta2, 3, 4.5);
    printf("before call: %d %d\n", s.lsta2.f1, s.lsta2.f2);
    ps->lsta2 = struct_assign_test2(ps->lsta2, ps->i);
    printf("after call: %d %d\n", ps->lsta2.f1, ps->lsta2.f2);

    static struct {
        void (*elem)();
    } t[] = {
        /* XXX: we should allow this even without braces */
        { struct_assign_test }
    };
    printf("%d\n", struct_assign_test == t[0].elem);

    s.lsta1 = s.lsta2 = struct_assign_test2(s.lsta1, 1);
    printf("%d %d\n", s.lsta1.f1, s.lsta1.f2);
}

/* casts to short/char */

void cast1(char a, short b, unsigned char c, unsigned short d)
{
    printf("%d %d %d %d\n", a, b, c, d);
}

char bcast;
short scast;

void cast_test()
{
    int a;
    char c;
    char tab[10];
    unsigned b,d;
    short s;
    char *p = NULL;
    unsigned long ul = 0x80000000UL;
    p -= 0x700000000042;

    a = 0xfffff;
    cast1(a, a, a, a);
    a = 0xffffe;
    printf("%d %d %d %d\n",
           (char)(a + 1),
           (short)(a + 1),
           (unsigned char)(a + 1),
           (unsigned short)(a + 1));
    printf("%d %d %d %d\n",
           (char)0xfffff,
           (short)0xfffff,
           (unsigned char)0xfffff,
           (unsigned short)0xfffff);

    a = (bcast = 128) + 1;
    printf("%d\n", a);
    a = (scast = 65536) + 1;
    printf("%d\n", a);
    
    printf("sizeof(c) = %d, sizeof((int)c) = %d\n", sizeof(c), sizeof((int)c));
    
    /* test cast from unsigned to signed short to int */
    b = 0xf000;
    d = (short)b;
    printf("((unsigned)(short)0x%08x) = 0x%08x\n", b, d);
    b = 0xf0f0;
    d = (char)b;
    printf("((unsigned)(char)0x%08x) = 0x%08x\n", b, d);
    
    /* test implicit int casting for array accesses */
    c = 0;
    tab[1] = 2;
    tab[c] = 1;
    printf("%d %d\n", tab[0], tab[1]);

    /* test implicit casting on some operators */
    printf("sizeof(+(char)'a') = %d\n", sizeof(+(char)'a'));
    printf("sizeof(-(char)'a') = %d\n", sizeof(-(char)'a'));
    printf("sizeof(~(char)'a') = %d\n", sizeof(-(char)'a'));

#if CC_NAME != CC_clang /* clang doesn't support non-portable conversions */
    /* from pointer to integer types */
    printf("%d %d %ld %ld %lld %lld\n",
           (int)p, (unsigned int)p,
           (long)p, (unsigned long)p,
           (long long)p, (unsigned long long)p);
#endif

    /* from integers to pointers */
    printf("%p %p %p %p\n",
           (void *)a, (void *)b, (void *)c, (void *)d);

    /* int to int with sign set */
    printf("0x%lx\n", (unsigned long)(int)ul);
}

/* initializers tests */
struct structinit1 {
    int f1;
    char f2;
    short f3;
    int farray[3];
};

int sinit1 = 2;
int sinit2 = { 3 };
int sinit3[3] = { 1, 2, {{3}}, };
int sinit4[3][2] = { {1, 2}, {3, 4}, {5, 6} };
int sinit5[3][2] = { 1, 2, 3, 4, 5, 6 };
int sinit6[] = { 1, 2, 3 };
int sinit7[] = { [2] = 3, [0] = 1, 2 };
char sinit8[] = "hello" "trala";

struct structinit1 sinit9 = { 1, 2, 3 };
struct structinit1 sinit10 = { .f2 = 2, 3, .f1 = 1 };
struct structinit1 sinit11 = { .f2 = 2, 3, .f1 = 1, 
#ifdef ALL_ISOC99
                               .farray[0] = 10,
                               .farray[1] = 11,
                               .farray[2] = 12,
#endif
};

char *sinit12 = "hello world";
char *sinit13[] = {
    "test1",
    "test2",
    "test3",
};
char sinit14[10] = { "abc" };
int sinit15[3] = { sizeof(sinit15), 1, 2 };

struct { int a[3], b; } sinit16[] = { { 1 }, 2 };

struct bar {
        char *s;
        int len;
} sinit17[] = {
        "a1", 4,
        "a2", 1
};

int sinit18[10] = {
    [2 ... 5] = 20,
    2,
    [8] = 10,
};

struct complexinit0 {
    int a;
    int b;
};

struct complexinit {
    int a;
    const struct complexinit0 *b;
};

const static struct complexinit cix[] = {
    [0] = {
        .a = 2000,
        .b = (const struct complexinit0[]) {
                { 2001, 2002 },
                { 2003, 2003 },
                {}
        }
    }
};

struct complexinit2 {
        int a;
        int b[];
};

struct complexinit2 cix20;

struct complexinit2 cix21 = {
        .a = 3000,
        .b = { 3001, 3002, 3003 }
};

struct complexinit2 cix22 = {
        .a = 4000,
        .b = { 4001, 4002, 4003, 4004, 4005, 4006 }
};

typedef int arrtype1[];
arrtype1 sinit19 = {1};
arrtype1 sinit20 = {2,3};
typedef int arrtype2[3];
arrtype2 sinit21 = {4};
arrtype2 sinit22 = {5,6,7};

/* Address comparisons of non-weak symbols with zero can be const-folded */
int sinit23[2] = { "astring" ? sizeof("astring") : -1,
                   &sinit23 ? 42 : -1 };

int sinit24 = 2 || 1 / 0; /* exception in constant but unevaluated context */

/* bitfield init */
struct bf_SS {unsigned int bit:1,bits31:31; };
struct bf_SS bf_init = { .bit = 1 };
struct bfn_SS {int a,b; struct bf_SS c; int d,e; };
struct bfn_SS bfn_init = { .c.bit = 1 };
struct bfa_SS {int a,b; struct bf_SS c[3]; int d,e; };
struct bfa_SS bfa_init = { .c[1].bit = 1 };
struct bf_SS bfaa_init[3] = { [1].bit = 1 };
struct bf_SS bfaa_vinit[] = { [2].bit = 1 };
struct b2_SS {long long int field : 52; long long int pad : 12; };
struct b2_SS bf_init2 = {0xFFF000FFF000FLL, 0x123};

extern int external_inited = 42;

void init_test(void)
{
    int linit1 = 2;
    int linit2 = { 3 };
    int linit4[3][2] = { {1, 2}, {3, 4}, {5, 6} };
    int linit6[] = { 1, 2, 3 };
    int i, j;
    char linit8[] = "hello" "trala";
    int linit12[10] = { 1, 2 };
    int linit13[10] = { 1, 2, [7] = 3, [3] = 4, };
    char linit14[10] = "abc";
    int linit15[10] = { linit1, linit1 + 1, [6] = linit1 + 2, };
    struct linit16 { int a1, a2, a3, a4; } linit16 = { 1, .a3 = 2 };
    int linit17 = sizeof(linit17);
    int zero = 0;
    /* Addresses on non-weak symbols are non-zero, but not the access itself */
    int linit18[2] = {&zero ? 1 : -1, zero ? -1 : 1 };
    struct bf_SS bf_finit = { .bit = 1 };
    struct bfn_SS bfn_finit = { .c.bit = 1 };
    struct bfa_SS bfa_finit = { .c[1].bit = 1 };
    struct bf_SS bfaa_finit[3] = { [1].bit = 1 };
    struct bf_SS bfaa_fvinit[] = { [2].bit = 1 };
    struct b2_SS bf_finit2 = {0xFFF000FFF000FLL, 0x123};
    
    printf("sinit1=%d\n", sinit1);
    printf("sinit2=%d\n", sinit2);
    printf("sinit3=%d %d %d %d\n", 
           sizeof(sinit3),
           sinit3[0],
           sinit3[1],
           sinit3[2]
           );
    printf("sinit6=%d\n", sizeof(sinit6));
    printf("sinit7=%d %d %d %d\n", 
           sizeof(sinit7),
           sinit7[0],
           sinit7[1],
           sinit7[2]
           );
    printf("sinit8=%s\n", sinit8);
    printf("sinit9=%d %d %d\n", 
           sinit9.f1,
           sinit9.f2,
           sinit9.f3
           );
    printf("sinit10=%d %d %d\n", 
           sinit10.f1,
           sinit10.f2,
           sinit10.f3
           );
    printf("sinit11=%d %d %d %d %d %d\n", 
           sinit11.f1,
           sinit11.f2,
           sinit11.f3,
           sinit11.farray[0],
           sinit11.farray[1],
           sinit11.farray[2]
           );

    for(i=0;i<3;i++)
        for(j=0;j<2;j++)
            printf("[%d][%d] = %d %d %d\n", 
                   i, j, sinit4[i][j], sinit5[i][j], linit4[i][j]);
    printf("linit1=%d\n", linit1);
    printf("linit2=%d\n", linit2);
    printf("linit6=%d\n", sizeof(linit6));
    printf("linit8=%d %s\n", sizeof(linit8), linit8);

    printf("sinit12=%s\n", sinit12);
    printf("sinit13=%d %s %s %s\n",
           sizeof(sinit13), 
           sinit13[0],
           sinit13[1],
           sinit13[2]);
    printf("sinit14=%s\n", sinit14);

    for(i=0;i<10;i++) printf(" %d", linit12[i]);
    printf("\n");
    for(i=0;i<10;i++) printf(" %d", linit13[i]);
    printf("\n");
    for(i=0;i<10;i++) printf(" %d", linit14[i]);
    printf("\n");
    for(i=0;i<10;i++) printf(" %d", linit15[i]);
    printf("\n");
    printf("%d %d %d %d\n", 
           linit16.a1,
           linit16.a2,
           linit16.a3,
           linit16.a4);
    /* test that initialisation is done after variable declare */
    printf("linit17=%d\n", linit17);
    printf("sinit15=%d\n", sinit15[0]);
    printf("sinit16=%d %d\n", sinit16[0].a[0], sinit16[1].a[0]);
    printf("sinit17=%s %d %s %d\n",
           sinit17[0].s, sinit17[0].len,
           sinit17[1].s, sinit17[1].len);
    for(i=0;i<10;i++)
        printf("%x ", sinit18[i]);
    printf("\n");
    /* complex init check */
    printf("cix: %d %d %d %d %d %d %d\n",
        cix[0].a,
        cix[0].b[0].a, cix[0].b[0].b,
        cix[0].b[1].a, cix[0].b[1].b,
        cix[0].b[2].a, cix[0].b[2].b);
    printf("cix2: %d %d\n", cix21.b[2], cix22.b[5]);
    printf("sizeof cix20 %d, cix21 %d, sizeof cix22 %d\n", sizeof cix20, sizeof cix21, sizeof cix22);

    printf("arrtype1: %d %d %d\n", sinit19[0], sinit20[0], sinit20[1]);
    printf("arrtype2: %d %d\n", sizeof(sinit19), sizeof(sinit20));
    printf("arrtype3: %d %d %d\n", sinit21[0], sinit21[1], sinit21[2]);
    printf("arrtype4: %d %d %d\n", sinit22[0], sinit22[1], sinit22[2]);
    printf("arrtype5: %d %d\n", sizeof(sinit21), sizeof(sinit22));
    printf("arrtype6: %d\n", sizeof(arrtype2));

    printf("sinit23= %d %d\n", sinit23[0], sinit23[1]);
    printf("sinit24=%d\n", sinit24);
    printf("linit18= %d %d\n", linit18[0], linit18[1]);
    printf ("bf1: %u %u\n", bf_init.bit, bf_init.bits31);
    printf ("bf2: %u %u\n", bf_finit.bit, bf_finit.bits31);
    printf ("bf3: %u %u\n", bfn_init.c.bit, bfn_init.c.bits31);
    printf ("bf4: %u %u\n", bfn_finit.c.bit, bfn_finit.c.bits31);
    for (i = 0; i < 3; i++)
        printf ("bf5[%d]: %u %u\n", i, bfa_init.c[i].bit, bfa_init.c[i].bits31);
    for (i = 0; i < 3; i++)
        printf ("bf6[%d]: %u %u\n", i, bfa_finit.c[i].bit, bfa_finit.c[i].bits31);
    for (i = 0; i < 3; i++)
        printf ("bf7[%d]: %u %u\n", i, bfaa_init[i].bit, bfaa_init[i].bits31);
    for (i = 0; i < 3; i++)
        printf ("bf8[%d]: %u %u\n", i, bfaa_finit[i].bit, bfaa_finit[i].bits31);
    for (i = 0; i < 3; i++)
        printf ("bf9[%d]: %u %u\n", i, bfaa_vinit[i].bit, bfaa_vinit[i].bits31);
    for (i = 0; i < 3; i++)
        printf ("bf10[%d]: %u %u\n", i, bfaa_fvinit[i].bit, bfaa_fvinit[i].bits31);
}

void switch_uc(unsigned char uc)
{
        switch (uc) {
            case 0xfb ... 0xfe:
                printf("ucsw:1\n");
                break;
            case 0xff:
                printf("ucsw:2\n");
                break;
            case 0 ... 5:
                printf("ucsw:3\n");
                break;
            default:
                printf("ucsw: broken!\n");
        }
}

void switch_sc(signed char sc)
{
        switch (sc) {
            case -5 ... -2:
                printf("scsw:1\n");
                break;
            case -1:
                printf("scsw:2\n");
                break;
            case 0 ... 5:
                printf("scsw:3\n");
                break;
            default:
                printf("scsw: broken!\n");
        }
}

void switch_test()
{
    int i;
    unsigned long long ull;
    long long ll;

    for(i=0;i<15;i++) {
        switch(i) {
        case 0:
        case 1:
            printf("a");
            break;
        default:
            printf("%d", i);
            break;
        case 8 ... 12:
            printf("c");
            break;
        case 3:
            printf("b");
            break;
        case 0xc33c6b9fU:
        case 0x7c9eeeb9U:
            break;
        }
    }
    printf("\n");

    for (i = 1; i <= 5; i++) {
        ull = (unsigned long long)i << 61;
        switch (ull) {
            case 1ULL << 61:
                printf("ullsw:1\n");
                break;
            case 2ULL << 61:
                printf("ullsw:2\n");
                break;
            case 3ULL << 61:
                printf("ullsw:3\n");
                break;
            case 4ULL << 61:
                printf("ullsw:4\n");
                break;
            case 5ULL << 61:
                printf("ullsw:5\n");
                break;
            default:
                printf("ullsw: broken!\n");
        }
    }

    for (i = 1; i <= 5; i++) {
        ll = (long long)i << 61;
        switch (ll) {
            case 1LL << 61:
                printf("llsw:1\n");
                break;
            case 2LL << 61:
                printf("llsw:2\n");
                break;
            case 3LL << 61:
                printf("llsw:3\n");
                break;
            case 4LL << 61:
                printf("llsw:4\n");
                break;
            case 5LL << 61:
                printf("llsw:5\n");
                break;
            default:
                printf("llsw: broken!\n");
        }
    }

    for (i = -5; i <= 5; i++) {
        switch_uc((unsigned char)i);
    }

    for (i = -5; i <= 5; i++) {
        switch_sc ((signed char)i);
    }
}

/* ISOC99 _Bool type */
void c99_bool_test(void)
{
#ifdef BOOL_ISOC99
    int a;
    _Bool b, b2;

    printf("sizeof(_Bool) = %d\n", sizeof(_Bool));
    a = 3;
    printf("cast: %d %d %d\n", (_Bool)10, (_Bool)0, (_Bool)a);
    b = 3;
    printf("b = %d\n", b);
    b++;
    printf("b = %d\n", b);
    b2 = 0;
    printf("sizeof(x ? _Bool : _Bool) = %d (should be sizeof int)\n",
           sizeof ((volatile int)a ? b : b2));
#endif
}

void bitfield_test(void)
{
    int a;
    short sa;
    unsigned char ca;
    struct sbf1 {
        int f1 : 3;
        int : 2;
        int f2 : 1;
        int : 0;
        int f3 : 5;
        int f4 : 7;
        unsigned int f5 : 7;
    } st1;
    printf("sizeof(st1) = %d\n", sizeof(st1));

    st1.f1 = 3;
    st1.f2 = 1;
    st1.f3 = 15;
    a = 120;
    st1.f4 = a;
    st1.f5 = a;
    st1.f5++;
    printf("%d %d %d %d %d\n",
           st1.f1, st1.f2, st1.f3, st1.f4, st1.f5);
    sa = st1.f5;
    ca = st1.f5;
    printf("%d %d\n", sa, ca);

    st1.f1 = 7;
    if (st1.f1 == -1) 
        printf("st1.f1 == -1\n");
    else 
        printf("st1.f1 != -1\n");
    if (st1.f2 == -1) 
        printf("st1.f2 == -1\n");
    else 
        printf("st1.f2 != -1\n");

    struct sbf2 {
        long long f1 : 45;
        long long : 2;
        long long f2 : 35;
        unsigned long long f3 : 38;
    } st2;
    st2.f1 = 0x123456789ULL;
    a = 120;
    st2.f2 = (long long)a << 25;
    st2.f3 = a;
    st2.f2++;
    printf("%lld %lld %lld\n", st2.f1, st2.f2, st2.f3);

#if 0
    Disabled for now until further clarification re GCC compatibility
    struct sbf3 {
        int f1 : 7;
        int f2 : 1;
        char f3;
        int f4 : 8;
        int f5 : 1;
        int f6 : 16;
    } st3;
    printf("sizeof(st3) = %d\n", sizeof(st3));
#endif

    struct sbf4 {
        int x : 31;
        char y : 2;
    } st4;
    st4.y = 1;
    printf("st4.y == %d\n", st4.y);
    struct sbf5 {
        int a;
        char b;
        int x : 12, y : 4, : 0, : 4, z : 3;
        char c;
    } st5 = { 1, 2, 3, 4, -3, 6 };
    printf("st5 = %d %d %d %d %d %d\n", st5.a, st5.b, st5.x, st5.y, st5.z, st5.c);
    struct sbf6 {
        short x : 12;
        unsigned char y : 2;
    } st6;
    st6.y = 1;
    printf("st6.y == %d\n", st6.y);
}

#ifdef __x86_64__
#define FLOAT_FMT "%f\n"
#else
/* x86's float isn't compatible with GCC */
#define FLOAT_FMT "%.5f\n"
#endif

/* declare strto* functions as they are C99 */
double strtod(const char *nptr, char **endptr);

#if defined(_WIN32)
float strtof(const char *nptr, char **endptr) {return (float)strtod(nptr, endptr);}
LONG_DOUBLE strtold(const char *nptr, char **endptr) {return (LONG_DOUBLE)strtod(nptr, endptr);}
#else
float strtof(const char *nptr, char **endptr);
LONG_DOUBLE strtold(const char *nptr, char **endptr);
#endif

#if CC_NAME == CC_clang
/* In clang 0.0/0.0 is nan and not -nan.
   Also some older clang version do v=-v
   as v = -0 - v */
static char enable_nan_test = 0;
#else
static char enable_nan_test = 1;
#endif

#define FTEST(prefix, typename, type, fmt)\
void prefix ## cmp(type a, type b)\
{\
    printf("%d %d %d %d %d %d\n",\
           a == b,\
           a != b,\
           a < b,\
           a > b,\
           a >= b,\
           a <= b);\
    printf(fmt " " fmt " " fmt " " fmt " " fmt " " fmt " " fmt "\n",\
           a,\
           b,\
           a + b,\
           a - b,\
           a * b,\
           a / b,\
           -a);\
    printf(fmt "\n", ++a);\
    printf(fmt "\n", a++);\
    printf(fmt "\n", a);\
    b = 0;\
    printf("%d %d\n", !a, !b);\
}\
void prefix ## fcast(type a)\
{\
    float fa;\
    double da;\
    LONG_DOUBLE la;\
    int ia;\
    long long llia;\
    unsigned int ua;\
    unsigned long long llua;\
    type b;\
    fa = a;\
    da = a;\
    la = a;\
    printf("ftof: %f %f %Lf\n", fa, da, la);\
    ia = (int)a;\
    llia = (long long)a;\
    a = (a >= 0) ? a : -a;\
    ua = (unsigned int)a;\
    llua = (unsigned long long)a;\
    printf("ftoi: %d %u %lld %llu\n", ia, ua, llia, llua);\
    ia = -1234;\
    ua = 0x81234500;\
    llia = -0x123456789012345LL;\
    llua = 0xf123456789012345LLU;\
    b = ia;\
    printf("itof: " fmt "\n", b);\
    b = ua;\
    printf("utof: " fmt "\n", b);\
    b = llia;\
    printf("lltof: " fmt "\n", b);\
    b = llua;\
    printf("ulltof: " fmt "\n", b);\
}\
\
float prefix ## retf(type a) { return a; }\
double prefix ## retd(type a) { return a; }\
LONG_DOUBLE prefix ## retld(type a) { return a; }\
\
void prefix ## call(void)\
{\
    printf("float: " FLOAT_FMT, prefix ## retf(42.123456789));\
    printf("double: %f\n", prefix ## retd(42.123456789));\
    printf("long double: %Lf\n", prefix ## retld(42.123456789));\
    printf("strto%s: %f\n", #prefix, (double)strto ## prefix("1.2", NULL));\
}\
\
void prefix ## signed_zeros(void) \
{\
  type x = 0.0, y = -0.0, n, p;\
  if (x == y)\
    printf ("Test 1.0 / x != 1.0 / y  returns %d (should be 1).\n",\
            1.0 / x != 1.0 / y);\
  else\
    printf ("x != y; this is wrong!\n");\
\
  n = -x;\
  if (x == n)\
    printf ("Test 1.0 / x != 1.0 / -x returns %d (should be 1).\n",\
            1.0 / x != 1.0 / n);\
  else\
    printf ("x != -x; this is wrong!\n");\
\
  p = +y;\
  if (x == p)\
    printf ("Test 1.0 / x != 1.0 / +y returns %d (should be 1).\n",\
            1.0 / x != 1.0 / p);\
  else\
    printf ("x != +y; this is wrong!\n");\
  p = -y;\
  if (x == p)\
    printf ("Test 1.0 / x != 1.0 / -y returns %d (should be 0).\n",\
            1.0 / x != 1.0 / p);\
  else\
    printf ("x != -y; this is wrong!\n");\
}\
void prefix ## nan(void)\
{\
    type nan = 0.0/0.0;\
    type nnan = -nan; \
    printf("nantest: " fmt " " fmt "\n", nan, nnan);\
}\
void prefix ## test(void)\
{\
    printf("testing '%s'\n", #typename);\
    prefix ## cmp(1, 2.5);\
    prefix ## cmp(2, 1.5);\
    prefix ## cmp(1, 1);\
    prefix ## fcast(234.6);\
    prefix ## fcast(-2334.6);\
    prefix ## call();\
    prefix ## signed_zeros();\
    if (enable_nan_test) prefix ## nan();\
}

FTEST(f, float, float, "%f")
FTEST(d, double, double, "%f")
FTEST(ld, long double, LONG_DOUBLE, "%Lf")

double ftab1[3] = { 1.2, 3.4, -5.6 };


void float_test(void)
{
#if !defined(__arm__) || defined(__ARM_PCS_VFP) || defined __ANDROID__
    volatile float fa, fb;
    volatile double da, db;
    int a;
    unsigned int b;
    static double nan2 = 0.0/0.0;
    static double inf1 = 1.0/0.0;
    static double inf2 = 1e5000;
    volatile LONG_DOUBLE la;

    printf("sizeof(float) = %d\n", sizeof(float));
    printf("sizeof(double) = %d\n", sizeof(double));
    printf("sizeof(long double) = %d\n", sizeof(LONG_DOUBLE));
    ftest();
    dtest();
    ldtest();
    printf("%f %f %f\n", ftab1[0], ftab1[1], ftab1[2]);
    printf("%f %f %f\n", 2.12, .5, 2.3e10);
    //    printf("%f %f %f\n", 0x1234p12, 0x1e23.23p10, 0x12dp-10);
    da = 123;
    printf("da=%f\n", da);
    fa = 123;
    printf("fa=%f\n", fa);
    a = 4000000000;
    da = a;
    printf("da = %f\n", da);
    b = 4000000000;
    db = b;
    printf("db = %f\n", db);
    printf("nan != nan = %d, inf1 = %f, inf2 = %f\n", nan2 != nan2, inf1, inf2);
    da = 0x0.88p-1022;  /* a subnormal */
    la = da;
    printf ("da subnormal = %a\n", da);
    printf ("da subnormal = %.40g\n", da);
    printf ("la subnormal = %La\n", la);
    printf ("la subnormal = %.40Lg\n", la);
    da /= 2;
    la = da;
    printf ("da/2 subnormal = %a\n", da);
    printf ("da/2 subnormal = %.40g\n", da);
    printf ("la/2 subnormal = %La\n", la);
    printf ("la/2 subnormal = %.40Lg\n", la);
    fa = 0x0.88p-126f;  /* a subnormal */
    la = fa;
    printf ("fa subnormal = %a\n", fa);
    printf ("fa subnormal = %.40g\n", fa);
    printf ("la subnormal = %La\n", la);
    printf ("la subnormal = %.40Lg\n", la);
    fa /= 2;
    la = fa;
    printf ("fa/2 subnormal = %a\n", fa);
    printf ("fa/2 subnormal = %.40g\n", fa);
    printf ("la/2 subnormal = %La\n", la);
    printf ("la/2 subnormal = %.40Lg\n", la);
#endif
}

int fib(int n)
{
    if (n <= 2)
        return 1;
    else
        return fib(n-1) + fib(n-2);
}

#if __GNUC__ == 3 || __GNUC__ == 4
# define aligned_function 0
#else
void __attribute__((aligned(16))) aligned_function(int i) {}
#endif

void funcptr_test()
{
    void (*func)(int);
    int a;
    struct {
        int dummy;
        void (*func)(int);
    } st1;
    long diff;

    func = &num;
    (*func)(12345);
    func = num;
    a = 1;
    a = 1;
    func(12345);
    /* more complicated pointer computation */
    st1.func = num;
    st1.func(12346);
    printf("sizeof1 = %d\n", sizeof(funcptr_test));
    printf("sizeof2 = %d\n", sizeof funcptr_test);
    printf("sizeof3 = %d\n", sizeof(&funcptr_test));
    printf("sizeof4 = %d\n", sizeof &funcptr_test);
    a = 0;
    func = num + a;
    diff = func - num;
    func(42);
    (func + diff)(42);
    (num + a)(43);

    /* Check that we can align functions */
    func = aligned_function;
    printf("aligned_function (should be zero): %d\n", ((int)(uintptr_t)func) & 15);
}

void lloptest(long long a, long long b)
{
    unsigned long long ua, ub;

    ua = a;
    ub = b;
    /* arith */
    printf("arith: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           a + b,
           a - b,
           a * b);
    
    if (b != 0) {
        printf("arith1: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           a / b,
           a % b);
    }

    /* binary */
    printf("bin: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           a & b,
           a | b,
           a ^ b);

    /* tests */
    printf("test: %d %d %d %d %d %d\n",
           a == b,
           a != b,
           a < b,
           a > b,
           a >= b,
           a <= b);
    
    printf("utest: %d %d %d %d %d %d\n",
           ua == ub,
           ua != ub,
           ua < ub,
           ua > ub,
           ua >= ub,
           ua <= ub);

    /* arith2 */
    a++;
    b++;
    printf("arith2: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", a, b);
    printf("arith2: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", a++, b++);
    printf("arith2: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", --a, --b);
    printf("arith2: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", a, b);
    b = ub = 0;
    printf("not: %d %d %d %d\n", !a, !ua, !b, !ub);
}

void llshift(long long a, int b)
{
    printf("shift: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           (unsigned long long)a >> b,
           a >> b,
           a << b);
    printf("shiftc: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           (unsigned long long)a >> 3,
           a >> 3,
           a << 3);
    printf("shiftc: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n",
           (unsigned long long)a >> 35,
           a >> 35,
           a << 35);
}

void llfloat(void)
{
    float fa;
    double da;
    LONG_DOUBLE lda;
    long long la, lb, lc;
    unsigned long long ula, ulb, ulc;
    la = 0x12345678;
    ula = 0x72345678;
    la = (la << 20) | 0x12345;
    ula = ula << 33;
    printf("la=" LONG_LONG_FORMAT " ula=" ULONG_LONG_FORMAT "\n", la, ula);

    fa = la;
    da = la;
    lda = la;
    printf("lltof: %f %f %Lf\n", fa, da, lda);

    la = fa;
    lb = da;
    lc = lda;
    printf("ftoll: " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", la, lb, lc);

    fa = ula;
    da = ula;
    lda = ula;
    printf("ulltof: %f %f %Lf\n", fa, da, lda);

    ula = fa;
    ulb = da;
    ulc = lda;
    printf("ftoull: " ULONG_LONG_FORMAT " " ULONG_LONG_FORMAT " " ULONG_LONG_FORMAT "\n", ula, ulb, ulc);
}

long long llfunc1(int a)
{
    return a * 2;
}

struct S {
    int id; 
    char item;
};

long long int value(struct S *v)
{
    return ((long long int)v->item);
}

long long llfunc2(long long x, long long y, int z)
{
    return x * y * z;
}

void check_opl_save_regs(char *a, long long b, int c)
{
    *a = b < 0 && !c;
}

void longlong_test(void)
{
    long long a, b, c;
    int ia;
    unsigned int ua;
    printf("sizeof(long long) = %d\n", sizeof(long long));
    ia = -1;
    ua = -2;
    a = ia;
    b = ua;
    printf(LONG_LONG_FORMAT " " LONG_LONG_FORMAT "\n", a, b);
    printf(LONG_LONG_FORMAT " " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " %Lx\n", 
           (long long)1, 
           (long long)-2,
           1LL,
           0x1234567812345679);
    a = llfunc1(-3);
    printf(LONG_LONG_FORMAT "\n", a);

    lloptest(1000, 23);
    lloptest(0xff, 0x1234);
    b = 0x72345678 << 10;
    lloptest(-3, b);
    llshift(0x123, 5);
    llshift(-23, 5);
    b = 0x72345678LL << 10;
    llshift(b, 47);

    llfloat();
#if 1
    b = 0x12345678;
    a = -1;
    c = a + b;
    printf(XLONG_LONG_FORMAT"\n", c);
#endif

    /* long long reg spill test */
    {
          struct S a;

          a.item = 3;
          printf("%lld\n", value(&a));
    }
    lloptest(0x80000000, 0);

    {
        long long *p, v, **pp;
        v = 1;
        p = &v;
        p[0]++;
        printf("another long long spill test : %lld\n", *p);
        pp = &p;

        v = llfunc2(**pp, **pp, ia);
        printf("a long long function (arm-)reg-args test : %lld\n", v);
    }
    a = 68719476720LL;
    b = 4294967295LL;
    printf("%d %d %d %d\n", a > b, a < b, a >= b, a <= b);

    printf(LONG_LONG_FORMAT "\n", 0x123456789LLU);

    /* long long pointer deref in argument passing test */
    a = 0x123;
    long long *p = &a;
    llshift(*p, 5);

    /* shortening followed by widening */
    unsigned long long u = 0x8000000000000001ULL;
    u = (unsigned)(u + 1);
    printf("long long u=" ULONG_LONG_FORMAT "\n", u);
    u = 0x11223344aa998877ULL;
    u = (unsigned)(int)(u + 1);
    printf("long long u=" ULONG_LONG_FORMAT "\n", u);

    /* was a problem with missing save_regs in gen_opl on 32-bit platforms */
    char cc = 78;
    check_opl_save_regs(&cc, -1, 0);
    printf("check_opl_save_regs: %d\n", cc);
}

void manyarg_test(void)
{
    LONG_DOUBLE ld = 1234567891234LL;
    printf("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f\n",
           1, 2, 3, 4, 5, 6, 7, 8,
           0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0);
    printf("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
           LONG_LONG_FORMAT " " LONG_LONG_FORMAT " %f %f\n",
           1, 2, 3, 4, 5, 6, 7, 8,
           0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
           1234567891234LL, 987654321986LL,
           42.0, 43.0);
    printf("%Lf %d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
           LONG_LONG_FORMAT " " LONG_LONG_FORMAT " %f %f\n",
           ld, 1, 2, 3, 4, 5, 6, 7, 8,
           0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
           1234567891234LL, 987654321986LL,
           42.0, 43.0);
    printf("%d %d %d %d %d %d %d %d %Lf\n",
           1, 2, 3, 4, 5, 6, 7, 8, ld);
    printf("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
           LONG_LONG_FORMAT " " LONG_LONG_FORMAT "%f %f %Lf\n",
           1, 2, 3, 4, 5, 6, 7, 8,
           0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
           1234567891234LL, 987654321986LL,
           42.0, 43.0, ld);
    printf("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
           "%Lf " LONG_LONG_FORMAT " " LONG_LONG_FORMAT " %f %f %Lf\n",
           1, 2, 3, 4, 5, 6, 7, 8,
           0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
           ld, 1234567891234LL, 987654321986LL,
           42.0, 43.0, ld);
}

void*
va_arg_with_struct_ptr(va_list ap) {
        /*
         * This was a BUG identified with FFTW-3.3.8 on arm64.
         * The test case only checks it compiles on all supported
         * architectures. This function is not currently called.
         */
        struct X { int _x; };
        struct X *x = va_arg(ap, struct X *);
        return x;
}

void vprintf1(const char *fmt, ...)
{
    va_list ap, aq;
    const char *p;
    int c, i;
    double d;
    long long ll;
    LONG_DOUBLE ld;

    va_start(aq, fmt);
    va_copy(ap, aq);
    
    p = fmt;
    for(;;) {
        c = *p;
        if (c == '\0')
            break;
        p++;
        if (c == '%') {
            c = *p;
            switch(c) {
            case '\0':
                goto the_end;
            case 'd':
                i = va_arg(ap, int);
                printf("%d", i);
                break;
            case 'f':
                d = va_arg(ap, double);
                printf("%f", d);
                break;
            case 'l':
                ll = va_arg(ap, long long);
                printf(LONG_LONG_FORMAT, ll);
                break;
            case 'F':
                ld = va_arg(ap, LONG_DOUBLE);
                printf("%Lf", ld);
                break;
            }
            p++;
        } else {
            putchar(c);
        }
    }
 the_end:
    va_end(aq);
    va_end(ap);
}

struct myspace {
    short int profile;
};
struct myspace2 {
#if CC_NAME == CC_clang /* clang7 doesn't support zero sized structs */
    char a[1];
#else
    char a[0];
#endif
};
struct myspace3 {
    char a[1];
};
struct myspace4 {
    char a[2];
};
struct mytest {
    void *foo, *bar, *baz;
};

struct mytest stdarg_for_struct(struct myspace bob, ...)
{
    struct myspace george, bill;
    struct myspace2 alex1;
    struct myspace3 alex2;
    struct myspace4 alex3;
    va_list ap;
    short int validate;

    va_start(ap, bob);
    alex1    = va_arg(ap, struct myspace2);
    alex2    = va_arg(ap, struct myspace3);
    alex3    = va_arg(ap, struct myspace4);
    bill     = va_arg(ap, struct myspace);
    george   = va_arg(ap, struct myspace);
    validate = va_arg(ap, int);
    printf("stdarg_for_struct: %d %d %d %d %d %d %d\n",
           alex2.a[0], alex3.a[0], alex3.a[1],
           bob.profile, bill.profile, george.profile, validate);
    va_end(ap);
    return (struct mytest) {};
}

void stdarg_for_libc(const char *fmt, ...)
{
    va_list args;
    va_start(args, fmt);
    vprintf(fmt, args);
    va_end(args);
}

void stdarg_syntax(int n, ...)
{
    int i;
    va_list ap;
    if (1)
      va_start(ap, n);
    else
      ;
    i = va_arg(ap, int);
    printf("stdarg_void_expr: %d\n", i);
    (va_end(ap));
}

typedef struct{
    double x,y;
} point;
point pts[]={{1.0,2.0},{3.0,4.0},{5.0,6.0},{7.0,8.0},{9.0,10.0},{11.0,12.0}};

static void stdarg_double_struct(int nargs, int posd,...)
{
    int i;
    double d;
    point pi;
    va_list args;

    printf ("stdarg_double_struct: %d\n", posd);
    va_start(args,posd);
    for(i = 0; i < nargs; i++) {
        if (i == posd) {
            d = va_arg (args, double);
            printf ("d %d = %g\n", i, d);
        }
        else {
            pi = va_arg (args, point);
            printf ("pts[%d] = %g %g\n", i, pi.x, pi.y);
        }
    }
    va_end(args);
}

void stdarg_test(void)
{
    LONG_DOUBLE ld = 1234567891234LL;
    struct myspace bob;
    struct myspace2 bob2;
    struct myspace3 bob3;
    struct myspace4 bob4;

    vprintf1("%d %d %d\n", 1, 2, 3);
    vprintf1("%f %d %f\n", 1.0, 2, 3.0);
    vprintf1("%l %l %d %f\n", 1234567891234LL, 987654321986LL, 3, 1234.0);
    vprintf1("%F %F %F\n", LONG_DOUBLE_LITERAL(1.2), LONG_DOUBLE_LITERAL(2.3), LONG_DOUBLE_LITERAL(3.4));
    vprintf1("%d %f %l %F %d %f %l %F\n",
             1, 1.2, 3LL, LONG_DOUBLE_LITERAL(4.5), 6, 7.8, 9LL, LONG_DOUBLE_LITERAL(0.1));
    vprintf1("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f\n",
             1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8);
    vprintf1("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f\n",
             1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0);
    vprintf1("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
             "%l %l %f %f\n",
             1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
             1234567891234LL, 987654321986LL,
             42.0, 43.0);
    vprintf1("%F %d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
             "%l %l %f %f\n",
             ld, 1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
             1234567891234LL, 987654321986LL,
             42.0, 43.0);
    vprintf1("%d %d %d %d %d %d %d %d %F\n",
             1, 2, 3, 4, 5, 6, 7, 8, ld);
    vprintf1("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
             "%l %l %f %f %F\n",
             1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
             1234567891234LL, 987654321986LL,
             42.0, 43.0, ld);
    vprintf1("%d %d %d %d %d %d %d %d %f %f %f %f %f %f %f %f %f %f "
             "%F %l %l %f %f %F\n",
             1, 2, 3, 4, 5, 6, 7, 8,
             0.1, 1.2, 2.3, 3.4, 4.5, 5.6, 6.7, 7.8, 8.9, 9.0,
             ld, 1234567891234LL, 987654321986LL,
             42.0, 43.0, ld);

    bob.profile = 42;
    bob3.a[0] = 1;
    bob4.a[0] = 2;
    bob4.a[1] = 3;
    stdarg_for_struct(bob, bob2, bob3, bob4, bob, bob, bob.profile);
    stdarg_for_libc("stdarg_for_libc: %s %.2f %d\n", "string", 1.23, 456);
    stdarg_syntax(1, 17);
    stdarg_double_struct(6,-1,pts[0],pts[1],pts[2],pts[3],pts[4],pts[5]);
    stdarg_double_struct(7,1,pts[0],-1.0,pts[1],pts[2],pts[3],pts[4],pts[5]);
    stdarg_double_struct(7,2,pts[0],pts[1],-1.0,pts[2],pts[3],pts[4],pts[5]);
    stdarg_double_struct(7,3,pts[0],pts[1],pts[2],-1.0,pts[3],pts[4],pts[5]);
    stdarg_double_struct(7,4,pts[0],pts[1],pts[2],pts[3],-1.0,pts[4],pts[5]);
    stdarg_double_struct(7,5,pts[0],pts[1],pts[2],pts[3],pts[4],-1.0,pts[5]);
}

int reltab[3] = { 1, 2, 3 };

int *rel1 = &reltab[1];
int *rel2 = &reltab[2];

void getmyaddress(void)
{
    printf("in getmyaddress\n");
}

#ifdef __LP64__
long __pa_symbol(void)
{
    /* This 64bit constant was handled incorrectly, it was used as addend
       (which can hold 64bit just fine) in connection with a symbol,
       and TCC generates wrong code for that (displacements are 32bit only).
       This effectively is "+ 0x80000000", and if addresses of globals
       are below 2GB the result should be a number without high 32 bits set.  */
       return ((long)(((unsigned long)(&rel1))) - (0xffffffff80000000UL));
}
#endif

uintptr_t theaddress = (uintptr_t)getmyaddress;
void relocation_test(void)
{
    void (*fptr)(void) = (void (*)(void))theaddress;
    printf("*rel1=%d\n", *rel1);
    printf("*rel2=%d\n", *rel2);
    fptr();
#ifdef __LP64__
    // compare 'addend' displacement versus conventional arithmetics
    printf("pa_symbol: %d\n", (long)&rel1 == __pa_symbol() - 0x80000000);
#endif
}

void old_style_f(a,b,c)
     int a, b;
     double c;
{
    printf("a=%d b=%d b=%f\n", a, b, c);
}

void decl_func1(int cmpfn())
{
    printf("cmpfn=%lx\n", (long)cmpfn);
}

void decl_func2(cmpfn)
int cmpfn();
{
    printf("cmpfn=%lx\n", (long)cmpfn);
}

void old_style_function_test(void)
{
#if CC_NAME == CC_clang
    /* recent clang versions (at least 15.0) raise an error:
       incompatible pointer to integer conversion passing 'void *'
       For the purpose of this test, pass 1 instead.
     */
    old_style_f(1, 2, 3.0);
#else
    old_style_f((void *)1, 2, 3.0);
#endif
    decl_func1(NULL);
    decl_func2(NULL);
}

void alloca_test()
{
#if defined __i386__ || defined __x86_64__ || defined __arm__
    char *p = alloca(16);
    strcpy(p,"123456789012345");
    printf("alloca: p is %s\n", p);
    char *demo = "This is only a test.\n";
    /* Test alloca embedded in a larger expression */
    printf("alloca: %s\n", strcpy(alloca(strlen(demo)+1),demo) );
#endif
}

void *bounds_checking_is_enabled()
{
    char ca[10], *cp = ca-1;
    return (ca != cp + 1) ? cp : NULL;
}

typedef int constant_negative_array_size_as_compile_time_assertion_idiom[(1 ? 2 : 0) - 1];

void c99_vla_test_1(int size1, int size2)
{
    int size = size1 * size2;
    int tab1[size][2], tab2[10][2];
    void *tab1_ptr, *tab2_ptr, *bad_ptr;

    /* "size" should have been 'captured' at tab1 declaration, 
        so modifying it should have no effect on VLA behaviour. */
    size = size-1;
    
    printf("Test C99 VLA 1 (sizeof): ");
    printf("%s\n", (sizeof tab1 == size1 * size2 * 2 * sizeof(int)) ? "PASSED" : "FAILED");
    tab1_ptr = tab1;
    tab2_ptr = tab2;
    printf("Test C99 VLA 2 (ptrs subtract): ");
    printf("%s\n", (tab2 - tab1 == (tab2_ptr - tab1_ptr) / (sizeof(int) * 2)) ? "PASSED" : "FAILED");
    printf("Test C99 VLA 3 (ptr add): ");
    printf("%s\n", &tab1[5][1] == (tab1_ptr + (5 * 2 + 1) * sizeof(int)) ? "PASSED" : "FAILED");
    printf("Test C99 VLA 4 (ptr access): ");
    tab1[size1][1] = 42;
    printf("%s\n", (*((int *) (tab1_ptr + (size1 * 2 + 1) * sizeof(int))) == 42) ? "PASSED" : "FAILED");

    printf("Test C99 VLA 5 (bounds checking (might be disabled)): ");
    if (bad_ptr = bounds_checking_is_enabled()) {
        int *t1 = &tab1[size1 * size2 - 1][3];
        int *t2 = &tab2[9][3];
        printf("%s ", bad_ptr == t1 ? "PASSED" : "FAILED");
        printf("%s ", bad_ptr == t2 ? "PASSED" : "FAILED");

        char*c1 = 1 + sizeof(tab1) + (char*)tab1;
        char*c2 = 1 + sizeof(tab2) + (char*)tab2;
        printf("%s ", bad_ptr == c1 ? "PASSED" : "FAILED");
        printf("%s ", bad_ptr == c2 ? "PASSED" : "FAILED");

        int *i1 = tab1[-1];
        int *i2 = tab2[-1];
        printf("%s ", bad_ptr == i1 ? "PASSED" : "FAILED");
        printf("%s ", bad_ptr == i2 ? "PASSED" : "FAILED");

        int *x1 = tab1[size1 * size2 + 1];
        int *x2 = tab2[10 + 1];
        printf("%s ", bad_ptr == x1 ? "PASSED" : "FAILED");
        printf("%s ", bad_ptr == x2 ? "PASSED" : "FAILED");
    } else {
        printf("PASSED PASSED PASSED PASSED PASSED PASSED PASSED PASSED ");
    }
    printf("\n");
}

void c99_vla_test_2(int d, int h, int w)
{
    int x, y, z;
    int (*arr)[h][w] = malloc(sizeof(int) * d*h*w);
    int c = 1;
    static int (*starr)[h][w];

    printf("Test C99 VLA 6 (pointer)\n");

    for (z=0; z<d; z++) {
        for (y=0; y<h; y++) {
            for (x=0; x<w; x++) {
                arr[z][y][x] = c++;
            }
        }
    }
    for (z=0; z<d; z++) {
        for (y=0; y<h; y++) {
            for (x=0; x<w; x++) {
                printf(" %2d", arr[z][y][x]);
            }
            puts("");
        }
        puts("");
    }
    starr = &arr[1];
    printf(" sizes : %d %d %d\n"
           " pdiff : %d %d\n"
           " tests : %d %d %d\n",
        sizeof (*arr), sizeof (*arr)[0], sizeof (*arr)[0][0],
        arr + 2 - arr, *arr + 3 - *arr,
        0 == sizeof (*arr + 1) - sizeof arr,
        0 == sizeof sizeof *arr - sizeof arr,
        starr[0][2][3] == arr[1][2][3]
        );
    free (arr);
}

void c99_vla_test_3a (int arr[2][3][4])
{
    printf ("%d\n", arr[1][2][3]);
}

void c99_vla_test_3b(int s, int arr[s][3][4])
{
    printf ("%d\n", arr[1][2][3]);
}

void c99_vla_test_3c(int s, int arr[2][s][4])
{
    printf ("%d\n", arr[1][2][3]);
}

void c99_vla_test_3d(int s, int arr[2][3][s])
{
    printf ("%d\n", arr[1][2][3]);
}

void c99_vla_test_3e(int s, int arr[][3][--s])
{
    printf ("%d %d %d\n", sizeof arr, s, arr[1][2][3]);
}

void c99_vla_test_3(void)
{
    int a[2][3][4];

    memset (a, 0, sizeof(a));
    a[1][2][3] = 123;
    c99_vla_test_3a(a);
    c99_vla_test_3b(2, a);
    c99_vla_test_3c(3, a);
    c99_vla_test_3d(4, a);
    c99_vla_test_3e(5, a);
}

void c99_vla_test(void)
{
    c99_vla_test_1(5, 2);
    c99_vla_test_2(3, 4, 5);
    c99_vla_test_3();
}


void sizeof_test(void)
{
    int a;
    int **ptr;

    printf("sizeof(int) = %d\n", sizeof(int));
    printf("sizeof(unsigned int) = %d\n", sizeof(unsigned int));
    printf("sizeof(long) = %d\n", sizeof(long));
    printf("sizeof(unsigned long) = %d\n", sizeof(unsigned long));
    printf("sizeof(short) = %d\n", sizeof(short));
    printf("sizeof(unsigned short) = %d\n", sizeof(unsigned short));
    printf("sizeof(char) = %d\n", sizeof(char));
    printf("sizeof(unsigned char) = %d\n", sizeof(unsigned char));
    printf("sizeof(func) = %d\n", sizeof sizeof_test());
    a = 1;
    printf("sizeof(a++) = %d\n", sizeof a++);
    printf("a=%d\n", a);
    ptr = NULL;
    printf("sizeof(**ptr) = %d\n", sizeof (**ptr));

    /* The type of sizeof should be as large as a pointer, actually
       it should be size_t.  */
    printf("sizeof(sizeof(int) = %d\n", sizeof(sizeof(int)));
    uintptr_t t = 1;
    uintptr_t t2;
    /* Effectively <<32, but defined also on 32bit machines.  */
    t <<= 16;
    t <<= 16;
    t++;
    /* This checks that sizeof really can be used to manipulate 
       uintptr_t objects, without truncation.  */
    t2 = t & -sizeof(uintptr_t);
    printf ("%lu %lu\n", t, t2);

    /* some alignof tests */
    printf("__alignof__(int) = %d\n", __alignof__(int));
    printf("__alignof__(unsigned int) = %d\n", __alignof__(unsigned int));
    printf("__alignof__(short) = %d\n", __alignof__(short));
    printf("__alignof__(unsigned short) = %d\n", __alignof__(unsigned short));
    printf("__alignof__(char) = %d\n", __alignof__(char));
    printf("__alignof__(unsigned char) = %d\n", __alignof__(unsigned char));
    printf("__alignof__(func) = %d\n", __alignof__ sizeof_test());

    /* sizes of VLAs need to be evaluated even inside sizeof: */
    a = 2;
    printf("sizeof(char[1+2*a]) = %d\n", sizeof(char[1+2*a]));
    /* And checking if sizeof compound literal works.  Parenthesized: */
    printf("sizeof( (struct {int i; int j;}){4,5} ) = %d\n",
           sizeof( (struct {int i; int j;}){4,5} ));
    /* And as direct sizeof argument (as unary expression): */
    printf("sizeof (struct {short i; short j;}){4,5} = %d\n",
           sizeof (struct {short i; short j;}){4,5} );

    /* sizeof(x && y) should be sizeof(int), even if constant
       evaluating is possible. */
    printf("sizeof(t && 0) = %d\n", sizeof(t && 0));
    printf("sizeof(1 && 1) = %d\n", sizeof(1 && 1));
    printf("sizeof(t || 1) = %d\n", sizeof(t || 1));
    printf("sizeof(0 || 0) = %d\n", sizeof(0 || 0));

    int arr[4], fn();
    printf("sizeof(0, arr) = %d\n", sizeof(0, arr));
    printf("sizeof(0, fn) = %d\n", sizeof(0, fn));
}

void typeof_test(void)
{
    double a;
    typeof(a) b;
    typeof(float) c;

    a = 1.5;
    b = 2.5;
    c = 3.5;
    printf("a=%f b=%f c=%f\n", a, b, c);
}


struct hlist_node;
struct hlist_head {
    struct hlist_node *first, *last;
};

void consume_ulong (unsigned long i)
{
    i = 0;
}

void statement_expr_test(void)
{
    int a, i;

    /* Basic stmt expr test */
    a = 0;
    for(i=0;i<10;i++) {
        a += 1 + 
            ( { int b, j; 
                b = 0; 
                for(j=0;j<5;j++) 
                    b += j; b; 
            } );
    }
    printf("a=%d\n", a);
    
    /* Test that symbols aren't freed prematurely.
       With SYM_DEBUG valgrind will show a read from a freed
       symbol, and tcc will show an (invalid) warning on the initialization
       of 'ptr' below, if symbols are popped after the stmt expr.  */
    void *v = (void*)39;
    typeof(({
            (struct hlist_node *)v;
            })) x;
    typeof (x)
        ptr = (struct hlist_node *)v;

    /* This part used to segfault when symbols were popped prematurely.
       The symbols for the static local would be overwritten with
       helper symbols from the pre-processor expansions in between.  */
#define some_attr     __attribute__((aligned(1)))
#define tps(str) ({                  \
            static const char *t some_attr = str; \
            t;                                    \
          })
    printf ("stmtexpr: %s %s\n",
            tps("somerandomlongstring"),
            tps("anotherlongstring"));

    /* Test that the three decls of 't' don't interact.  */
    int t = 40;
    int b = ({ int t = 41; t; });
    int c = ({ int t = 42; t; });

    /* Test that aggregate return values work.  */
    struct hlist_head h
        = ({
           typedef struct hlist_head T;
           long pre = 48;
           T t = { (void*)43, (void*)44 };
           long post = 49;
           t;
           });
    printf ("stmtexpr: %d %d %d\n", t, b, c);
    printf ("stmtexpr: %ld %ld\n", (long)h.first, (long)h.last);

    /* Test that we can give out addresses of local labels.  */
    consume_ulong(({ __label__ __here; __here: (unsigned long)&&__here; }));

    /* Test interaction between local and global label stacks and the
       need to defer popping symbol from them when within statement
       expressions.  Note how the labels are both named LBL.  */
    i = 0;
    ({
      {
        __label__ LBL;
       LBL: if (i++ == 0) goto LBL;
      }
      /* jump to a classical label out of an expr-stmt that had previously
         overshadowed that classical label */
      goto LBL;
    });
  LBL:
    printf("stmtexpr: %d should be 2\n", i);
}

void local_label_test(void)
{
    int a;
    goto l1;
 l2:
    a = 1 + ({
        __label__ l1, l2, l3, l4;
        goto l1;
    l4:
        printf("aa1\n");
        goto l3;
    l2:
        printf("aa3\n");
        goto l4;
    l1:
        printf("aa2\n");
        goto l2;
    l3:;
        1;
    });
    printf("a=%d\n", a);
    return;
 l4:
    printf("bb1\n");
    goto l2;
 l1:
    printf("bb2\n");
    goto l4;
}

/* inline assembler test */
#if defined(__i386__) || defined(__x86_64__)

typedef __SIZE_TYPE__ word;

/* from linux kernel */
static char * strncat1(char * dest,const char * src,size_t count)
{
word d0, d1, d2, d3;
__asm__ __volatile__(
        "repne\n\t"
        "scasb\n\t"
        "dec %1\n\t"
        "mov %8,%3\n"
        "1:\tdec %3\n\t"
        "js 2f\n\t"
        "lodsb\n\t"
        "stosb\n\t"
        "testb %%al,%%al\n\t"
        "jne 1b\n"
        "2:\txor %2,%2\n\t"
        "stosb"
        : "=&S" (d0), "=&D" (d1), "=&a" (d2), "=&c" (d3)
        : "0" (src),"1" (dest),"2" (0),"3" (0xffffffff), "g" (count)
        : "memory");
return dest;
}

static char * strncat2(char * dest,const char * src,size_t count)
{
word d0, d1, d2, d3;
__asm__ __volatile__(
        "repne scasb\n\t" /* one-line repne prefix + string op */
        "dec %1\n\t"
        "mov %8,%3\n"
        "1:\tdec %3\n\t"
        "js 2f\n\t"
        "lodsb\n\t"
        "stosb\n\t"
        "testb %%al,%%al\n\t"
        "jne 1b\n"
        "2:\txor %2,%2\n\t"
        "stosb"
        : "=&S" (d0), "=&D" (d1), "=&a" (d2), "=&c" (d3)
        : "0" (src),"1" (dest),"2" (0),"3" (0xffffffff), "g" (count)
        : "memory");
return dest;
}

static inline void * memcpy1(void * to, const void * from, size_t n)
{
word d0, d1, d2;
__asm__ __volatile__(
        "rep ; movsl\n\t"
        "testb $2,%b4\n\t"
        "je 1f\n\t"
        "movsw\n"
        "1:\ttestb $1,%b4\n\t"
        "je 2f\n\t"
        "movsb\n"
        "2:"
        : "=&c" (d0), "=&D" (d1), "=&S" (d2)
        :"0" (n/4), "q" (n),"1" ((word) to),"2" ((word) from)
        : "memory");
return (to);
}

static inline void * memcpy2(void * to, const void * from, size_t n)
{
word d0, d1, d2;
__asm__ __volatile__(
        "rep movsl\n\t"  /* one-line rep prefix + string op */
        "testb $2,%b4\n\t"
        "je 1f\n\t"
        "movsw\n"
        "1:\ttestb $1,%b4\n\t"
        "je 2f\n\t"
        "movsb\n"
        "2:"
        : "=&c" (d0), "=&D" (d1), "=&S" (d2)
        :"0" (n/4), "q" (n),"1" ((word) to),"2" ((word) from)
        : "memory");
return (to);
}

static __inline__ void sigaddset1(unsigned int *set, int _sig)
{
        __asm__("btsl %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc");
}

static __inline__ void sigdelset1(unsigned int *set, int _sig)
{
        asm("btrl %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc", "flags");
}

#ifdef __clang__
/* clang's inline asm is uncapable of 'xchgb %b0,%h0' */
static __inline__ __const__ unsigned int swab32(unsigned int x)
{
        return ((x >> 24) & 0xff) |
               ((x >> 8) & 0xff00) |
               ((x << 8) & 0xff0000) |
               ((x << 24) & 0xff000000);
}
#else
static __inline__ __const__ unsigned int swab32(unsigned int x)
{
        __asm__("xchgb %b0,%h0\n\t"     /* swap lower bytes     */
                "rorl $16,%0\n\t"       /* swap words           */
                "xchgb %b0,%h0"         /* swap higher bytes    */
                :"=" "q" (x)
                : "0" (x));
        return x;
}
#endif

static __inline__ unsigned long long mul64(unsigned int a, unsigned int b)
{
    unsigned long long res;
#ifdef __x86_64__
    /* Using the A constraint is wrong (it means rdx:rax, which is too large)
       but still test the 32bit->64bit mull.  */
    unsigned int resh, resl;
    __asm__("mull %2" : "=a" (resl), "=d" (resh) : "a" (a), "r" (b));
    res = ((unsigned long long)resh << 32) | resl;
#else
    __asm__("mull %2" : "=A" (res) : "a" (a), "r" (b));
#endif
    return res;
}

static __inline__ unsigned long long inc64(unsigned long long a)
{
    unsigned long long res;
#ifdef __x86_64__
    /* Using the A constraint is wrong, and increments are tested
       elsewhere.  */
    res = a + 1;
#else
    __asm__("addl $1, %%eax ; adcl $0, %%edx" : "=A" (res) : "A" (a));
#endif
    return res;
}

struct struct123 {
    int a;
    int b;
};
struct struct1231 {
    word addr;
};

word mconstraint_test(struct struct1231 *r)
{
    word ret;
    unsigned int a[2];
    a[0] = 0;
    __asm__ volatile ("lea %2,%0; movl 4(%0),%k0; addl %2,%k0; movl $51,%2; movl $52,4%2; movl $63,%1"
                     : "=&r" (ret), "=m" (a)
                     : "m" (*(struct struct123 *)r->addr));
    return ret + a[0];
}

#ifdef __x86_64__
int fls64(unsigned long long x)
{
  int bitpos = -1;
  asm("bsrq %1,%q0"
      : "+r" (bitpos)
      : "rm" (x));
  return bitpos + 1;
}
#endif

void other_constraints_test(void)
{
    word ret;
    int var;
#if CC_NAME != CC_clang
    __asm__ volatile ("mov %P1,%0" : "=r" (ret) : "p" (&var));
    printf ("oc1: %d\n", ret == (word)&var);
#endif
}

#ifndef _WIN32
/* Test global asm blocks playing with aliases.  */
void base_func(void)
{
  printf ("asmc: base\n");
}

#ifndef __APPLE__
extern void override_func1 (void);
extern void override_func2 (void);

asm(".weak override_func1\n.set override_func1, base_func");
asm(".set override_func1, base_func");
asm(".set override_func2, base_func");

void override_func2 (void)
{
  printf ("asmc: override2\n");
}

/* This checks a construct used by the linux kernel to encode
   references to strings by PC relative references.  */
extern int bug_table[] __attribute__((section("__bug_table")));
char * get_asm_string (void)
{
  /* On i386 when -fPIC is enabled this would cause a compile error with GCC,
     the problem being the "i" constraint used with a symbolic operand
     resolving to a local label.  That check is overly zealous as the code
     within the asm makes sure to use it only in PIC-possible contexts,
     but all GCC versions behave like so.  We arrange for PIC to be disabled
     for compiling tcctest.c in the Makefile.

     Additionally the usage of 'c' in "%c0" in the template is actually wrong,
     as that would expect an operand that is a condition code.  The operand
     as is (a local label) is accepted by GCC in non-PIC mode, and on x86-64.
     What the linux kernel really wanted is 'p' to disable the addition of '$'
     to the printed operand (as in "$.LC0" where the template only wants the
     bare operand ".LC0").  But the code below is what the linux kernel
     happens to use and as such is the one we want to test.  */
#ifndef __clang__
  extern int some_symbol;
  asm volatile (".globl some_symbol\n"
                "jmp .+6\n"
                "1:\n"
                "some_symbol: .long 0\n"
                ".pushsection __bug_table, \"a\"\n"
                ".globl bug_table\n"
                "bug_table:\n"
                /* The first entry (1b-2b) is unused in this test,
                   but we include it to check if cross-section
                   PC-relative references work.  */
                "2:\t.long 1b - 2b, %c0 - 2b\n"
                ".popsection\n" : : "i" ("A string"));
  char * str = ((char*)bug_table) + bug_table[1];
  return str;
#else
  return (char *) "A string";
#endif
}

/* This checks another constructs with local labels.  */
extern unsigned char alld_stuff[];
asm(".data\n"
    ".byte 41\n"
    "alld_stuff:\n"
    "661:\n"
    ".byte 42\n"
    "662:\n"
    ".pushsection .data.ignore\n"
    ".long 661b - .\n" /* This reference to 661 generates an external sym
                          which shouldn't somehow overwrite the offset that's
                          already determined for it.  */
    ".popsection\n"
    ".byte 662b - 661b\n"  /* So that this value is undeniably 1.  */);

void asm_local_label_diff (void)
{
  printf ("asm_local_label_diff: %d %d\n", alld_stuff[0], alld_stuff[1]);
}
#endif
#endif

/* This checks that static local variables are available from assembler.  */
void asm_local_statics (void)
{
  static int localint = 41;
  asm("incl %0" : "+m" (localint));
  printf ("asm_local_statics: %d\n", localint);
}

static
unsigned int set;

void fancy_copy (unsigned *in, unsigned *out)
{
  asm volatile ("" : "=r" (*out) : "0" (*in));
}

void fancy_copy2 (unsigned *in, unsigned *out)
{
  asm volatile ("mov %0,(%1)" : : "r" (*in), "r" (out) : "memory");
}

#if defined __x86_64__
void clobber_r12(void)
{
    asm volatile("mov $1, %%r12" ::: "r12");
}
#endif

void test_high_clobbers_really(void)
{
#if defined __x86_64__
    register word val asm("r12");
    word val2;
    /* This tests if asm clobbers correctly save/restore callee saved
       registers if they are clobbered and if it's the high 8 x86-64
       registers.  This is fragile for GCC as the constraints do not
       correctly capture the data flow, but good enough for us.  */
    asm volatile("mov $0x4542, %%r12" : "=r" (val):: "memory");
    clobber_r12();
    asm volatile("mov %%r12, %0" : "=r" (val2) : "r" (val): "memory");
    printf("asmhc: 0x%x\n", val2);
#endif
}

void test_high_clobbers(void)
{
#if defined __x86_64__
    word x1, x2;
    asm volatile("mov %%r12,%0" :: "m" (x1)); /* save r12 */
    test_high_clobbers_really();
    asm volatile("mov %%r12,%0" :: "m" (x2)); /* new r12 */
    asm volatile("mov %0,%%r12" :: "m" (x1)); /* restore r12 */
    /* should be 0 but tcc doesn't save r12 automatically, which has
       bad effects when gcc helds TCCState *s in r12 in tcc.c:main */
    //printf("r12-clobber-diff: %lx\n", x2 - x1);
#endif
}

static long cpu_number;
void trace_console(long len, long len2)
{
#ifdef __x86_64__
    /* This generated invalid code when the emission of the switch
       table isn't disabled.  The asms are necessary to show the bug,
       normal statements don't work (they need to generate some code
       even under nocode_wanted, which normal statements don't do,
       but asms do).  Also at least these number of cases is necessary
       to generate enough "random" bytes.  They ultimately are enough
       to create invalid instruction patterns to which the first
       skip-to-decision-table jump jumps.  If decision table emission
       is disabled all of this is no problem.

       It also is necessary that the switches are in a statement expression
       (which has the property of not being enterable from outside. no
       matter what).  */
    if (0
        &&
            ({
              long pscr_ret__;
              switch(len) {
                case 4:
                    {
                       long pfo_ret__;
                       switch (len2) {
                         case 8:        printf("bla"); pfo_ret__ = 42; break;
                       }
                       pscr_ret__ = pfo_ret__;
                    }
                  break;
                case 8:
                    {
                       long pfo_ret__;
                       switch (len2) {
                         case 1:asm("movq %1,%0": "=r" (pfo_ret__)      : "m" (cpu_number));    break;
                         case 2:asm("movq %1,%0": "=r" (pfo_ret__)      : "m" (cpu_number));    break;
                         case 4:asm("movq %1,%0": "=r" (pfo_ret__)      : "m" (cpu_number));    break;
                         case 8:asm("movq %1,%0": "=r" (pfo_ret__)      : "m" (cpu_number));    break;
                         default: printf("impossible\n");
                       }
                       pscr_ret__ = pfo_ret__;
                    };
                  break;
              }
              pscr_ret__;
            }))
      {
        printf("huh?\n");
      }
#endif
}

void test_asm_dead_code(void)
{
  word rdi;
  /* Try to make sure that xdi contains a zero, and hence will
     lead to a segfault if the next asm is evaluated without
     arguments being set up.  */
  asm volatile ("" : "=D" (rdi) : "0" (0));
  (void)sizeof (({
      int var;
      /* This shouldn't trigger a segfault, either the argument
         registers need to be set up and the asm emitted despite
         this being in an unevaluated context, or both the argument
         setup _and_ the asm emission need to be suppressed.  The latter
         is better.  Disabling asm code gen when suppression is on
         also fixes the above trace_console bug, but that came earlier
         than asm suppression.  */
      asm volatile ("movl $0,(%0)" : : "D" (&var) : "memory");
      var;
  }));
}

void test_asm_call(void)
{
#if defined __x86_64__ && !defined _WIN64  && !defined(__APPLE__)
  static char str[] = "PATH";
  char *s;
  /* This tests if a reference to an undefined symbol from an asm
     block, which isn't otherwise referenced in this file, is correctly
     regarded as global symbol, so that it's resolved by other object files
     or libraries.  We chose getenv here, which isn't used anywhere else
     in this file.  (If we used e.g. printf, which is used we already
     would have a global symbol entry, not triggering the bug which is
     tested here).  */
  /* two pushes so stack remains aligned */
  asm volatile ("push %%rdi; push %%rdi; mov %0, %%rdi;"
#if 1 && !defined(__TINYC__) && (defined(__PIC__) || defined(__PIE__))
                "call getenv@plt;"
#else
                "call getenv;"
#endif
                "pop %%rdi; pop %%rdi"
                : "=a" (s) : "r" (str));
  printf("asmd: %s\n", s);
#endif
}

#if defined __x86_64__
# define RX "(%rip)"
#else
# define RX
#endif

void asm_dot_test(void)
{
#ifndef __APPLE__
    int x;
    for (x = 1;; ++x) {
        int r = x;
        switch (x) {
        case 1:
            asm(".text; lea S"RX",%eax; lea ."RX",%ecx; sub %ecx,%eax; S=.; jmp p0");
        case 2:
#ifndef __clang__
            /* clangs internal assembler is broken */
            asm(".text; jmp .+6; .int 123; mov .-4"RX",%eax; jmp p0");
#else
            asm(".text; mov $123, %eax; jmp p0");
#endif
        case 3:
#if !defined(_WIN32) && !defined(__clang__)
            asm(".pushsection \".data\"; Y=.; .int 999; X=Y; .int 456; X=.-4; .popsection");
#else
            asm(".data; Y=.; .int 999; X=Y; .int 456; X=.-4; .text");
#endif
            asm(".text; mov X"RX",%eax; jmp p0");
        case 4:
#ifdef __clang__
            /* Bah!  Clang!  Doesn't want to redefine 'X'  */
            asm(".text; mov $789,%eax; jmp p0");
#else
#ifndef _WIN32
            asm(".data; X=.; .int 789; Y=.; .int 999; .previous");
#else
            asm(".data; X=.; .int 789; Y=.; .int 999; .text");
#endif
            asm(".text; mov X"RX",%eax; X=Y; jmp p0");
#endif
        case 0:
            asm(".text; p0=.; mov %%eax,%0;" : "=m"(r)); break;
        }
        if (r == x)
            break;
        printf("asm_dot_test %d: %d\n", x, r);
    }
#endif
}

void asm_pcrel_test(void)
{
    unsigned o1, o2;
    /* subtract text-section label from forward or other-section label */
    asm("1: mov $2f-1b,%%eax; mov %%eax,%0" : "=m"(o1));
    /* verify ... */
    asm("2: lea 2b"RX",%eax; lea 1b"RX",%ecx; sub %ecx,%eax");
    asm("mov %%eax,%0" : "=m"(o2));
    printf("%s : %x\n", __FUNCTION__, o1 - o2); /* should be zero */
}

void asm_test(void)
{
    char buf[128];
    unsigned int val, val2;
    struct struct123 s1;
    struct struct1231 s2 = { (word)&s1 };
    /* Hide the outer base_func, but check later that the inline
       asm block gets the outer one.  */
    int base_func = 42;
    void override_func3 (void);
    word asmret;
#ifdef BOOL_ISOC99
    _Bool somebool;
#endif
    register int regvar asm("%esi");

    // parse 0x1E-1 as 3 tokens in asm mode
    asm volatile ("mov $0x1E-1,%eax");

    /* test the no operand case */
    asm volatile ("xorl %eax, %eax");

    memcpy1(buf, "hello", 6);
    strncat1(buf, " worldXXXXX", 3);
    printf("%s\n", buf);

    memcpy2(buf, "hello", 6);
    strncat2(buf, " worldXXXXX", 3);
    printf("%s\n", buf);

    /* 'A' constraint test */
    printf("mul64=0x%Lx\n", mul64(0x12345678, 0xabcd1234));
    printf("inc64=0x%Lx\n", inc64(0x12345678ffffffff));

    s1.a = 42;
    s1.b = 43;
    printf("mconstraint: %d", mconstraint_test(&s2));
    printf(" %d %d\n", s1.a, s1.b);
    other_constraints_test();
    set = 0xff;
    sigdelset1(&set, 2);
    sigaddset1(&set, 16);
    /* NOTE: we test here if C labels are correctly restored after the
       asm statement */
    goto label1;
 label2:
    __asm__("btsl %1,%0" : "=m"(set) : "Ir"(20) : "cc");
    printf("set=0x%x\n", set);
    val = 0x01020304;
    printf("swab32(0x%08x) = 0x%0x\n", val, swab32(val));
#ifndef _WIN32
#ifndef __APPLE__
    override_func1();
    override_func2();
    /* The base_func ref from the following inline asm should find
       the global one, not the local decl from this function.  */
    asm volatile(".weak override_func3\n.set override_func3, base_func");
    override_func3();
    printf("asmstr: %s\n", get_asm_string());
    asm_local_label_diff();
#endif
#endif
    asm_local_statics();
#ifndef __clang__
    /* clang can't deal with the type change */
    /* Check that we can also load structs of appropriate layout
       into registers.  */
    asm volatile("" : "=r" (asmret) : "0"(s2));
    if (asmret != s2.addr)
      printf("asmstr: failed\n");
#endif
#ifdef BOOL_ISOC99
    /* Check that the typesize correctly sets the register size to
       8 bit.  */
    asm volatile("cmp %1,%2; sete %0" : "=a"(somebool) : "r"(1), "r"(2));
    if (!somebool)
      printf("asmbool: failed\n");
#endif
    val = 43;
    fancy_copy (&val, &val2);
    printf ("fancycpy(%d)=%d\n", val, val2);
    val = 44;
    fancy_copy2 (&val, &val2);
    printf ("fancycpy2(%d)=%d\n", val, val2);
    asm volatile ("mov $0x4243, %%esi" : "=r" (regvar));
    printf ("regvar=%x\n", regvar);
    test_high_clobbers();
    trace_console(8, 8);
    test_asm_dead_code();
    test_asm_call();
    asm_dot_test();
    asm_pcrel_test();
    return;
 label1:
    goto label2;
}

#else

void asm_test(void)
{
}

#endif

#define COMPAT_TYPE(type1, type2) \
{\
    printf("__builtin_types_compatible_p(%s, %s) = %d\n", #type1, #type2, \
           __builtin_types_compatible_p (type1, type2));\
}

int constant_p_var;

int func(void);


/* __builtin_clz and __builtin_ctz return random values for 0 */
static void builtin_test_bits(unsigned long long x, int cnt[])
{
#if GCC_MAJOR >= 4
    cnt[0] += __builtin_ffs(x);
    cnt[1] += __builtin_ffsl(x);
    cnt[2] += __builtin_ffsll(x);

    if ((unsigned int) x) cnt[3] += __builtin_clz(x);
    if ((unsigned long) x) cnt[4] += __builtin_clzl(x);
    if ((unsigned long long) x) cnt[5] += __builtin_clzll(x);

    if ((unsigned int) x) cnt[6] += __builtin_ctz(x);
    if ((unsigned long) x) cnt[7] += __builtin_ctzl(x);
    if ((unsigned long long) x) cnt[8] += __builtin_ctzll(x);

#if GCC_MAJOR >= 6 && (CC_NAME != CC_clang || GCC_MAJOR >= 11)
/* Apple clang 10 does not have __builtin_clrsb[l[l]] */
    cnt[9] += __builtin_clrsb(x);
    cnt[10] += __builtin_clrsbl(x);
    cnt[11] += __builtin_clrsbll(x);
#endif

    cnt[12] += __builtin_popcount(x);
    cnt[13] += __builtin_popcountl(x);
    cnt[14] += __builtin_popcountll(x);

    cnt[15] += __builtin_parity(x);
    cnt[16] += __builtin_parityl(x);
    cnt[17] += __builtin_parityll(x);
#endif
}

void builtin_test(void)
{
    short s;
    int i;
    long long ll;
#if GCC_MAJOR >= 3
    COMPAT_TYPE(int, int);
    COMPAT_TYPE(int, unsigned int);
    COMPAT_TYPE(int, char);
    COMPAT_TYPE(int, const int);
    COMPAT_TYPE(int, volatile int);
    COMPAT_TYPE(int *, int *);
    COMPAT_TYPE(int *, void *);
    COMPAT_TYPE(int *, const int *);
    COMPAT_TYPE(char *, unsigned char *);
    COMPAT_TYPE(char *, signed char *);
    COMPAT_TYPE(char *, char *);
    COMPAT_TYPE(char **, void *);
#endif
    printf("res1 = %d\n", __builtin_constant_p(1));
    printf("res2 = %d\n", __builtin_constant_p(1 + 2));
    printf("res3 = %d\n", __builtin_constant_p(&constant_p_var));
    printf("res4 = %d\n", __builtin_constant_p(constant_p_var));
    printf("res5 = %d\n", __builtin_constant_p(100000 / constant_p_var));
    printf("res6 = %d\n", __builtin_constant_p(i && 1));
    printf("res7 = %d\n", __builtin_constant_p("hi"));
    printf("res8 = %d\n", __builtin_constant_p(func()));
#ifndef __clang__
    printf("res10 = %d\n", __builtin_constant_p(i && 0));
    printf("res11 = %d\n", __builtin_constant_p(i * 0));
    printf("res12 = %d\n", __builtin_constant_p(i && 0 ? i : 34));
    printf("res13 = %d\n", __builtin_constant_p((1,7)));
#else
    /* clang doesn't regard these as constant expression */
    printf("res10 = 1\n");
    printf("res11 = 1\n");
    printf("res12 = 1\n");
    printf("res13 = 0\n");
#endif

    s = 1;
    ll = 2;
    i = __builtin_choose_expr (1 != 0, ll, s);
    printf("bce: %d\n", i);
    i = __builtin_choose_expr (1 != 1, ll, s);
    printf("bce: %d\n", i);
    i = sizeof (__builtin_choose_expr (1, ll, s));
    printf("bce: %d\n", i);
    i = sizeof (__builtin_choose_expr (0, ll, s));
    printf("bce: %d\n", i);

    //printf("bera: %p\n", __builtin_extract_return_addr((void*)43));

    {
        int cnt[18];
        unsigned long long r = 0;

        memset(cnt, 0, sizeof(cnt));
        builtin_test_bits(0, cnt);
        builtin_test_bits(0xffffffffffffffffull, cnt);
        for (i = 0; i < 64; i++)
            builtin_test_bits(1ull << i, cnt);
        for (i = 0; i < 1000; i++) {
            r = 0x5851f42d4c957f2dull * r + 0x14057b7ef767814full;
            builtin_test_bits(r, cnt);
        }
        for (i = 0; i < 18; i++)
            printf ("%d %d\n", i, cnt[i]);
    }
}

#if defined _WIN32 || (defined __APPLE__ && GCC_MAJOR >= 15)
void weak_test(void) {}
#else
extern int __attribute__((weak)) weak_f1(void);
extern int __attribute__((weak)) weak_f2(void);
extern int                       weak_f3(void);
extern int __attribute__((weak)) weak_v1;
extern int __attribute__((weak)) weak_v2;
extern int                       weak_v3;

extern int                           (*weak_fpa)() __attribute__((weak));
extern int __attribute__((weak))     (*weak_fpb)();
extern     __attribute__((weak)) int (*weak_fpc)();

extern int                     weak_asm_f1(void) asm("weak_asm_f1x") __attribute((weak));
extern int __attribute((weak)) weak_asm_f2(void) asm("weak_asm_f2x")                    ;
extern int __attribute((weak)) weak_asm_f3(void) asm("weak_asm_f3x") __attribute((weak));
extern int                     weak_asm_v1       asm("weak_asm_v1x") __attribute((weak));
extern int __attribute((weak)) weak_asm_v2       asm("weak_asm_v2x")                    ;
extern int __attribute((weak)) weak_asm_v3(void) asm("weak_asm_v3x") __attribute((weak));

#ifndef __clang__
static const size_t dummy = 0;
extern __typeof(dummy) weak_dummy1 __attribute__((weak, alias("dummy")));
extern __typeof(dummy) __attribute__((weak, alias("dummy"))) weak_dummy2;
extern __attribute__((weak, alias("dummy"))) __typeof(dummy) weak_dummy3;
#endif

int some_lib_func(void);
int dummy_impl_of_slf(void) { return 444; }
#ifndef __clang__
int some_lib_func(void) __attribute__((weak, alias("dummy_impl_of_slf")));
#endif

int weak_toolate() __attribute__((weak));
int weak_toolate() { return 0; }

void __attribute__((weak)) weak_test(void)
{
        printf("weak_f1=%d\n", weak_f1 ? weak_f1() : 123);
        printf("weak_f2=%d\n", weak_f2 ? weak_f2() : 123);
        printf("weak_f3=%d\n", weak_f3 ? weak_f3() : 123);
        printf("weak_v1=%d\n",&weak_v1 ? weak_v1   : 123);
        printf("weak_v2=%d\n",&weak_v2 ? weak_v2   : 123);
        printf("weak_v3=%d\n",&weak_v3 ? weak_v3   : 123);

        printf("weak_fpa=%d\n",&weak_fpa ? weak_fpa() : 123);
        printf("weak_fpb=%d\n",&weak_fpb ? weak_fpb() : 123);
        printf("weak_fpc=%d\n",&weak_fpc ? weak_fpc() : 123);
        
        printf("weak_asm_f1=%d\n", weak_asm_f1 != NULL);
        printf("weak_asm_f2=%d\n", weak_asm_f2 != NULL);
        printf("weak_asm_f3=%d\n", weak_asm_f3 != NULL);
        printf("weak_asm_v1=%d\n",&weak_asm_v1 != NULL);
        printf("weak_asm_v2=%d\n",&weak_asm_v2 != NULL);
        printf("weak_asm_v3=%d\n",&weak_asm_v3 != NULL);
#ifdef __clang__
        printf("some_lib_func=444\n");
#else
        printf("some_lib_func=%d\n", &some_lib_func ? some_lib_func() : 0);
#endif
}

int __attribute__((weak)) weak_f2() { return 222; }
int __attribute__((weak)) weak_f3() { return 333; }
int __attribute__((weak)) weak_v2 = 222;
int __attribute__((weak)) weak_v3 = 333;
#endif

void const_func(const int a)
{
}

void const_warn_test(void)
{
    const_func(1);
}

struct condstruct {
  int i;
};

int getme (struct condstruct *s, int i)
{
  int i1 = (i == 0 ? 0 : s)->i;
  int i2 = (i == 0 ? s : 0)->i;
  int i3 = (i == 0 ? (void*)0 : s)->i;
  int i4 = (i == 0 ? s : (void*)0)->i;
  return i1 + i2 + i3 + i4;
}

struct global_data
{
  int a[40];
  int *b[40];
};

struct global_data global_data;

int global_data_getstuff (int *, int);

void global_data_callit (int i)
{
  *global_data.b[i] = global_data_getstuff (global_data.b[i], 1);
}

int global_data_getstuff (int *p, int i)
{
  return *p + i;
}

void global_data_test (void)
{
  global_data.a[0] = 42;
  global_data.b[0] = &global_data.a[0];
  global_data_callit (0);
  printf ("%d\n", global_data.a[0]);
}

struct cmpcmpS
{
  unsigned char fill : 3;
  unsigned char b1 : 1;
  unsigned char b2 : 1;
  unsigned char fill2 : 3;
};

int glob1, glob2, glob3;

void compare_comparisons (struct cmpcmpS *s)
{
  if (s->b1 != (glob1 == glob2)
      || (s->b2 != (glob1 == glob3)))
    printf ("comparing comparisons broken\n");
}

void cmp_comparison_test(void)
{
  struct cmpcmpS s;
  s.b1 = 1;
  glob1 = 42; glob2 = 42;
  s.b2 = 0;
  glob3 = 43;
  compare_comparisons (&s);
}

int fcompare (double a, double b, int code)
{
  switch (code) {
    case 0: return a == b;
    case 1: return a != b;
    case 2: return a < b;
    case 3: return a >= b;
    case 4: return a > b;
    case 5: return a <= b;
  }
  return 0;
}

void math_cmp_test(void)
{
  double nan = 0.0/0.0;
  double one = 1.0;
  double two = 2.0;
  int comp = 0;
  int v;
#define bug(a,b,op,iop,part) printf("Test broken: %s %s %s %s %d\n", #a, #b, #op, #iop, part)

  /* This asserts that "a op b" is _not_ true, but "a iop b" is true.
     And it does this in various ways so that all code generation paths
     are checked (generating inverted tests, or non-inverted tests, or
     producing a 0/1 value without jumps (that's done in the fcompare
     function).  */
#define FCMP(a,b,op,iop,code) \
  if (fcompare (a,b,code))    \
    bug (a,b,op,iop,1); \
  if (a op b) \
    bug (a,b,op,iop,2); \
  if (a iop b) \
    ; \
  else \
    bug (a,b,op,iop,3); \
  if ((a op b) || comp) \
    bug (a,b,op,iop,4); \
  if ((a iop b) || comp) \
    ; \
  else \
    bug (a,b,op,iop,5); \
  if (v = !(a op b), !v) bug(a,b,op,iop,7);

  /* Equality tests.  */
  FCMP(nan, nan, ==, !=, 0);
  FCMP(one, two, ==, !=, 0);
  FCMP(one, one, !=, ==, 1);
  /* Non-equality is a bit special.  */
  if (!fcompare (nan, nan, 1))
    bug (nan, nan, !=, ==, 6);

  /* Relational tests on numbers.  */
  FCMP(two, one, <, >=, 2);
  FCMP(one, two, >=, <, 3);
  FCMP(one, two, >, <=, 4);
  FCMP(two, one, <=, >, 5);

  /* Relational tests on NaNs.  Note that the inverse op here is
     always !=, there's no operator in C that is equivalent to !(a < b),
     when NaNs are involved, same for the other relational ops.  */
  FCMP(nan, nan, <, !=, 2);
  FCMP(nan, nan, >=, !=, 3);
  FCMP(nan, nan, >, !=, 4);
  FCMP(nan, nan, <=, !=, 5);
}

double get100 () { return 100.0; }

void callsave_test(void)
{
#if defined __i386__ || defined __x86_64__ || defined __arm__
  int i, s; double *d; double t;
  s = sizeof (double);
  printf ("callsavetest: %d\n", s);
  d = alloca (sizeof(double));
  d[0] = 10.0;
  /* x86-64 had a bug were the next call to get100 would evict
     the lvalue &d[0] as VT_LLOCAL, and the reload would be done
     in int type, not pointer type.  When alloca returns a pointer
     with the high 32 bit set (which is likely on x86-64) the access
     generates a segfault.  */
  i = d[0] > get100 ();
  printf ("%d\n", i);
#endif
}


void bfa3(ptrdiff_t str_offset)
{
    printf("bfa3: %s\n", (char *)__builtin_frame_address(3) + str_offset);
}
void bfa2(ptrdiff_t str_offset)
{
    printf("bfa2: %s\n", (char *)__builtin_frame_address(2) + str_offset);
    bfa3(str_offset);
}
void bfa1(ptrdiff_t str_offset)
{
    printf("bfa1: %s\n", (char *)__builtin_frame_address(1) + str_offset);
    bfa2(str_offset);
}

void builtin_frame_address_test(void)
{
/* builtin_frame_address fails on ARM with gcc which make test3 fail */
#ifndef __arm__
    char str[] = "__builtin_frame_address";
    char *fp0 = __builtin_frame_address(0);

    printf("str: %s\n", str);
#ifndef __riscv // gcc dumps core. tcc, clang work
    bfa1(str-fp0);
#endif
#endif
}

char via_volatile (char i)
{
  char volatile vi;
  vi = i;
  return vi;
}

void volatile_test(void)
{
    if (via_volatile (42) != 42)
      printf (" broken\n");
    else
      printf (" ok\n");
}

struct __attribute__((__packed__)) Spacked {
    char a;
    short b;
    int c;
};
struct Spacked spacked;
typedef struct __attribute__((__packed__)) {
    char a;
    short b;
    int c;
} Spacked2;
Spacked2 spacked2;
typedef struct Spacked3_s {
    char a;
    short b;
    int c;
} __attribute__((__packed__)) Spacked3;
Spacked3 spacked3;
struct gate_struct64 {
    unsigned short offset_low;
    unsigned short segment;
    unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
    unsigned short offset_middle;
    unsigned offset_high;
    unsigned zero1;
} __attribute__((packed));
typedef struct gate_struct64 gate_desc;
gate_desc a_gate_desc;
void attrib_test(void)
{
#ifndef _WIN32
  printf("attr: %d %d %d %d\n", sizeof(struct Spacked),
         sizeof(spacked), sizeof(Spacked2), sizeof(spacked2));
  printf("attr: %d %d\n", sizeof(Spacked3), sizeof(spacked3));
  printf("attr: %d %d\n", sizeof(gate_desc), sizeof(a_gate_desc));
#endif
}
extern __attribute__((__unused__)) char * __attribute__((__unused__)) *
strange_attrib_placement (void);

void * __attribute__((__unused__)) get_void_ptr (void *a)
{
  return a;
}

/* This part checks for a bug in TOK_GET (used for inline expansion),
   where the large long long constant left the the high bits set for
   the integer constant token.  */
static inline
int __get_order(unsigned long long size)
{
  int order;
  size -= 0xffff880000000000ULL; // this const left high bits set in the token
    {
      struct S { int i : 1; } s; // constructed for this '1'
    }
  order = size;
  return order;
}

/* This just forces the above inline function to be actually emitted.  */
int force_get_order(unsigned long s)
{
    return __get_order(s);
}

#define pv(m) printf(sizeof (s->m + 0) == 8 ? "%016llx\n" : "%02x\n", s->m)

/* Test failed when using bounds checking */
void bounds_check1_test (void)
{
    struct s {
        int x;
        long long y;
    } _s, *s = &_s;
    s->x = 10;
    s->y = 20;
    pv(x);
    pv(y);
}

/* This failed on arm64/riscv64 */
void map_add(int a, int b, int c, int d, int e, int f, int g, int h, int i)
{
  printf ("%d %d %d %d %d %d %d %d %d\n", a, b, c, d, e, f, g, h, i);
}

void func_arg_test(void)
{
    int a = 0;
    int b = 1;
    map_add(0, 1, 2, 3, 4, 5, 6, 7, a && b);
}

/* gcc 2.95.3 does not handle correctly CR in strings or after strays */
#define CORRECT_CR_HANDLING

/* deprecated and no longer supported in gcc 3.3 */
/* no longer supported by default in TinyCC */
#ifdef __TINYC__
/* # define ACCEPT_LF_IN_STRINGS */
#endif

#define tcc_test()

/* keep this as the last test because GCC messes up line-numbers
   with the ^L^K^M characters below */
void whitespace_test(void)
{
    char *str;
    int tcc_test = 1;

\f\v
#if 1
    pri\
ntf("whitspace:\n");\f\v
#endif
    pf("N=%d\n", 2);

#ifdef CORRECT_CR_HANDLING
    pri\
ntf("aaa=%d\n", 3);
#endif

    pri\
\
ntf("min=%d\n", 4);

#ifdef ACCEPT_LF_IN_STRINGS
    printf("len1=%d\n", strlen("
"));
#ifdef CORRECT_CR_HANDLING
    str = "
";
    printf("len1=%d str[0]=%d\n", strlen(str), str[0]);
#endif
    printf("len1=%d\n", strlen("
a
"));
#else
    printf("len1=1\nlen1=1 str[0]=10\nlen1=3\n");
#endif /* ACCEPT_LF_IN_STRINGS */

#ifdef __LINE__
    printf("__LINE__ defined\n");
#endif

#if 0
    /* wrong with GCC */
    printf("__LINE__=%d __FILE__=%s\n", __LINE__, __FILE__);
#line 1111
    printf("__LINE__=%d __FILE__=%s\n", __LINE__, __FILE__);
#line 2222 "test"
    printf("__LINE__=%d __FILE__=%s\n", __LINE__, __FILE__);
#endif

    printf("\\
"12\\
063\\
n 456\"\n");

    printf ("%d\n",
#if 1
            tcc_test
#endif
            );

}

#define RUN(test) puts("---- " #test " ----"), test(), puts("")

int main(int argc, char **argv)
{
    RUN(whitespace_test);
    RUN(macro_test);
    RUN(recursive_macro_test);
    RUN(string_test);
    RUN(expr_test);
    RUN(scope_test);
    RUN(scope2_test);
    RUN(forward_test);
    RUN(funcptr_test);
    RUN(if_test);
    RUN(loop_test);
    RUN(switch_test);
    RUN(goto_test);
    RUN(enum_test);
    RUN(typedef_test);
    RUN(struct_test);
    RUN(array_test);
    RUN(expr_ptr_test);
    RUN(bool_test);
    RUN(optimize_out_test);
    RUN(expr2_test);
    RUN(constant_expr_test);
    RUN(expr_cmp_test);
    RUN(char_short_test);
    RUN(init_test);
    RUN(compound_literal_test);
    RUN(kr_test);
    RUN(struct_assign_test);
    RUN(cast_test);
    RUN(bitfield_test);
    RUN(c99_bool_test);
    RUN(float_test);
    RUN(longlong_test);
    RUN(manyarg_test);
    RUN(stdarg_test);
    RUN(relocation_test);
    RUN(old_style_function_test);
    RUN(alloca_test);
    RUN(c99_vla_test);
    RUN(sizeof_test);
    RUN(typeof_test);
    RUN(statement_expr_test);
    RUN(local_label_test);
    RUN(asm_test);
    RUN(builtin_test);
    RUN(weak_test);
    RUN(global_data_test);
    RUN(cmp_comparison_test);
    RUN(math_cmp_test);
    RUN(callsave_test);
    RUN(builtin_frame_address_test);
    RUN(volatile_test);
    RUN(attrib_test);
    RUN(bounds_check1_test);
    RUN(func_arg_test);

    return 0;
}