NetBSD-5.0.2/regress/usr.bin/xlint/lint1/test4.c

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/* cast initialization as the rhs of a - operand */
struct sockaddr_dl {
	char sdl_data[2];
};

int             npdl_datasize = sizeof(struct sockaddr_dl) -
((int) ((unsigned long)&((struct sockaddr_dl *) 0)->sdl_data[0]));