class myclass
{
public:
     myclass() { тра-та-та }
};

#include   <new>
void test()
{
      myclass * Tmp = new(nothrow) myclass;
      if(!Tmp)
      {
           cout < "тра-та-та не удалось";
      }

}

    known_message<decoded_message>* pElement = new(std::nothrow) known_message<decoded_message>(RSSI);
    if(pElement)
    {
  107100:    e3a0001c     mov    r0, #28
  107104:    e59f1068     ldr    r1, [pc, #104]; 107174 <decoder::received(unsigned char)+0x84>
  107108:    eb00079b     bl    108f7c <operator new(unsigned int, std::nothrow_t const&)>
    INLINE known_message(uint_fast8_t rssi) : raw_message(T::ID, sizeof(T), rssi) {}
  10710c:    e1a03007     mov    r3, r7
  107110:    e3a01002     mov    r1, #2
  107114:    e3a02008     mov    r2, #8
  107118:    e1a05000     mov    r5, r0
  10711c:    eb0002ca     bl    107c4c <raw_message::raw_message(rf_message::id, unsigned int, unsigned int)>

class test_t
{
public:
    test_t()
    {
        std::cout << "\r\n in constructor";
    }
private:
    char arr[20];
};

void command_NTEST_handler(char*)
{
    test_t * Tmp = new(std::nothrow) test_t;
    if(!Tmp)
        std::cout << "тра-та-та не удалось";
}

0000000000401220 <command_NTEST_handler(char*)>:
  401220:   48 83 ec 08             sub    $0x8,%rsp
  401224:   be f0 22 60 00          mov    $0x6022f0,%esi
  401229:   bf 14 00 00 00          mov    $0x14,%edi
  40122e:   e8 4d f9 ff ff          callq  400b80 <operator new(unsigned long, std::nothrow_t const&)@plt>
  401233:   48 85 c0                test   %rax,%rax
  401236:   74 20                   je     401258 <command_NTEST_handler(char*)+0x38>
  401238:   ba 11 00 00 00          mov    $0x11,%edx
  40123d:   be 42 18 40 00          mov    $0x401842,%esi
  401242:   bf e0 21 60 00          mov    $0x6021e0,%edi
  401247:   e8 84 f9 ff ff          callq  400bd0 <std::basic_ostream<char, std::char_traits<char> >& std::__ostream_insert<char, st

class test_t
{
public:
    test_t()
    {
        uart << "\r\n in constructor";
    }
private:
    char arr[20];
};

void command_NTEST_handler(char*)
{
    test_t * Tmp = new(std::nothrow) test_t;
    if(!Tmp)
        uart << "тра-та-та не удалось";
}

08000ff4 <command_NTEST_handler(char*)>:
8000ff4:   f641 51b0   movw    r1, #7600  ; 0x1db0
8000ff8:   b510        push    {r4, lr}
8000ffa:   2014        movs    r0, #20
8000ffc:   f6c0 0100   movt    r1, #2048  ; 0x800
8001000:   f000 f86e   bl  80010e0 <operator new(unsigned int, std::nothrow_t const&)>
8001004:   b180        cbz r0, 8001028 <command_NTEST_handler(char*)+0x34>