/* MessageServer_Release_x64.exe sha256 7911b15c4379625eaa12ff227708aa3a033bc6ac2cf6b34283136e3a62df25f1
 * Ghidra 12.1.2 decompiler output for 0x140003da0 FUN_140003da0
 * Pseudocode, not original source. */

longlong * FUN_140003da0(longlong *param_1,longlong *param_2,ulonglong param_3,ulonglong param_4)

{
  code *pcVar1;
  char cVar2;
  longlong *plVar3;
  ulonglong _Size;
  
  if (param_3 <= (ulonglong)param_2[2]) {
    _Size = param_2[2] - param_3;
    if (param_4 < _Size) {
      _Size = param_4;
    }
    if (param_1 == param_2) {
      FUN_1400040a0(param_1,_Size + param_3,0xffffffffffffffff);
      FUN_1400040a0(param_1,0,param_3);
    }
    else {
      cVar2 = FUN_140004140(param_1,_Size);
      if (cVar2 != '\0') {
        if (0xf < (ulonglong)param_2[3]) {
          param_2 = (longlong *)*param_2;
        }
        plVar3 = param_1;
        if (0xf < (ulonglong)param_1[3]) {
          plVar3 = (longlong *)*param_1;
        }
        memcpy(plVar3,(void *)((longlong)param_2 + param_3),_Size);
        param_1[2] = _Size;
        plVar3 = param_1;
        if (0xf < (ulonglong)param_1[3]) {
          plVar3 = (longlong *)*param_1;
        }
        *(undefined1 *)((longlong)plVar3 + _Size) = 0;
      }
    }
    return param_1;
  }
  std::_Xout_of_range("invalid string position");
  pcVar1 = (code *)swi(3);
  plVar3 = (longlong *)(*pcVar1)();
  return plVar3;
}