new smatch

*** 11,21 ****
          [__builtin_offsetof(struct A, a[0*0])] = 0,     // OK
          [__builtin_offsetof(struct A, a[c])] = 0        // KO
  };
  
  /*
!  * check-name: __builtin_offsetof() constness verification.
   *
   * check-error-start
  constexpr-offsetof.c:12:39: error: bad constant expression
   * check-error-end
   */
--- 11,21 ----
          [__builtin_offsetof(struct A, a[0*0])] = 0,     // OK
          [__builtin_offsetof(struct A, a[c])] = 0        // KO
  };
  
  /*
!  * check-name: constexprness __builtin_offsetof()
   *
   * check-error-start
  constexpr-offsetof.c:12:39: error: bad constant expression
   * check-error-end
   */