// Test for message: invalid pointer subtraction [116]
/* lint1-extra-flags: -X 351 */
/*
* Subtracting an int pointer from a double pointer does not make sense.
* The result cannot be reasonably defined since it is "the difference of
* the subscripts of the two array elements" (C99 6.5.5p9), and these two
* pointers cannot point to the same array.
*/
_Bool
example(int *a, double *b)
{
/* expect+1: error: invalid pointer subtraction [116] */
return a - b > 0;
}
/*
* Even though signed char and unsigned char have the same size,
* their pointer types are still considered incompatible.
*
* C99 6.5.5p9
*/
_Bool
subtract_character_pointers(signed char *scp, unsigned char *ucp)
{
/* expect+1: error: invalid pointer subtraction [116] */
return scp - ucp > 0;
}
