Quoting Paul Edwards to Ian Binnie:



 PE> int *x;

 PE> int y;

 

 PE> y = 3 * x;

 

 IB> is illegal - the only legal arithmetic operations on pointers are:-

 IB> addition or subtraction of an integer (including increment/decrement)

 IB> the difference between pointers.

 

 PE> y = * x;

 PE> y = *x;

 

 IB> are equivalent, whitespace is ignored.

 

 IB> (As I am quite sure you already know.)



 PE> I am not sure anyone knows everything about C.  I didn't know the

 PE> above.  Another thing I only found out recently is that you have

 PE> to go unsigned int xxx:1;

 PE> in a structure, rather than unsigned short xxx:1;



Is that in the standard or something you've observed? This compiled without

error with EMX/GCC:



int main()

{

  struct fred {

    unsigned short xxx:1;

    unsigned int yyy:1;

    unsigned short int zzz:1;

  };

}



It might be the compiler (or maybe GCC does something it shouldn't. Does

"unsigned short int" work?



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