int FUN_00405914(int *param_1,uint param_2,int param_3)

{

  uint uVar1;

  int iVar2;

  undefined4 *puVar3;

  char *pcVar4;

  uint uVar5;

  if ((param_3 == 0) || (param_2 == 0)) {

    return param_1[1];

  }

  if ((char)param_1[5] == '\0') {

    uVar5 = (int)param_1 + 0xbU & 3;

    uVar1 = (uint)(param_1 + 2) & 3;

    uVar5 = (*(int *)(((int)param_1 + 0xbU) - uVar5) << (3 - uVar5) * 8 |

            (uint)param_1 & 0xffffffffU >> (uVar5 + 1) * 8) & -1 << (4 - uVar1) * 8 |

            *(uint *)((int)(param_1 + 2) - uVar1) >> uVar1 * 8;

    if (param_2 <= uVar5 - param_1[3]) goto LAB_00405a44;

    iVar2 = FUN_0048470c(uVar5 + 0x100);

    if (iVar2 != 0) {

      FUN_00483c90(iVar2,*param_1,param_1[3]);

      *param_1 = iVar2;

      param_1[1] = iVar2 + param_1[3];

      param_1[2] = param_1[2] + 0x100;

      *(undefined1 *)(param_1 + 5) = 1;

      goto LAB_00405a44;

    }

    puVar3 = (undefined4 *)FUN_0047082c(4);

    pcVar4 = "memory allocate error";

    uVar5 = 0;

LAB_00405abc:

    *puVar3 = pcVar4;

    FUN_00472734(puVar3,&PTR_PTR_FUN_004af2b0,0);

  }

  else {

LAB_00405a44:

    if (param_2 <= (uint)(param_1[2] - param_1[3])) goto LAB_00405b08;

    uVar5 = param_2;

    if (param_2 < 0x100) {

      uVar5 = 0x100;

    }

    iVar2 = FUN_00485290(*param_1,uVar5 + param_1[3]);

    *param_1 = iVar2;

    if (iVar2 == 0) {

      puVar3 = (undefined4 *)FUN_0047082c(4);

      pcVar4 = "Realloc error";

      goto LAB_00405abc;

    }

  }

  param_1[2] = uVar5 + param_1[3];

  param_1[1] = *param_1 + param_1[3];

LAB_00405b08:

  FUN_00483c90(param_1[1],param_3,param_2);

  param_1[1] = param_1[1] + param_2;

  param_1[3] = param_2 + param_1[3];

  param_1[4] = param_1[1] - *param_1;

  return param_1[1] - param_2;

}