char * rtstrstr(char *param_1,char *param_2)

{

  bool bVar1;

  size_t __n;

  size_t sVar2;

  int iVar3;

  __n = strlen(param_2);

  if (__n != 0) {

    sVar2 = strlen(param_1);

    while (bVar1 = (int)__n <= (int)sVar2, sVar2 = sVar2 - 1, bVar1) {   //possible issue identified - semgrep

      iVar3 = memcmp(param_1,param_2,__n)   //possible issue identified - semgrep

      if (iVar3 == 0) {

        return param_1;

      }

      param_1 = param_1 + 1;

    }

    param_1 = (char *)0x0;

  }

  return param_1;

}