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/* { dg-do compile } */

/* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */

/* { dg-options "-ffat-lto-objects" } */

typedef unsigned char uint8_t;

typedef unsigned int uint32_t;

typedef uint8_t byte;

typedef uint32_t u32bit;

__extension__ typedef __SIZE_TYPE__ size_t;

extern "C" {

    extern void __warn_memset_zero_len (void) __attribute__((__warning__ ("")));

    extern __inline __attribute__ ((__always_inline__)) __attribute__ ((__gnu_inline__, __artificial__))

    void * memset (void *__dest, int __ch, size_t __len) throw () {

        if (__builtin_constant_p (__len) && __len == 0)

            __warn_memset_zero_len (); /* { dg-warning "declared with attribute warning" } */

    }

}

inline void clear_mem(void* ptr, u32bit n)    {

    memset(ptr, 0, n);

}

template class MemoryRegion    {

public:

    u32bit size() const {

    }

    const T* begin() const {

    }

    void set(const T in[], u32bit n) {

        create(n);

    }

    void set(const MemoryRegion& in) {

        set(in.begin(), in.size());

    }

    void clear() {

        clear_mem(buf, allocated);

    }

    void create(u32bit);

    MemoryRegion() {

        used = allocated = 0;

    }

    mutable T* buf;

    mutable u32bit used;

    mutable u32bit allocated;

};

template void MemoryRegion::create(u32bit n)    {

    if(n <= allocated) {

        clear();

    }

}

template class SecureVector : public MemoryRegion    {

public:

    SecureVector& operator=(const MemoryRegion& in)          {

        if(this != &in) this->set(in);

    }

};

class OctetString    {

public:

    SecureVector bits_of() const {

    }

    OctetString& operator^=(const OctetString&);

    void change(const MemoryRegion& in) {

        bits = in;

    }

    OctetString(const MemoryRegion& in) {

        change(in);

    }

    SecureVector bits;

};

OctetString& OctetString::operator^=(const OctetString& k)    {

    if(&k == this) {

        bits.clear();

    }

}

bool __attribute__((flatten))

operator==(const OctetString& s1, const OctetString& s2)    {

    return (s1.bits_of() == s2.bits_of());

}