On Jun 30,  4:44pm, lukem@NetBSD.org (Luke Mewburn) wrote:
-- Subject: Re: __UNCONST(a)

| On Tue, Jun 29, 2004 at 11:53:25PM -0400, Christos Zoulas wrote:
|   | I would like to add:
|   |=20
|   |     /* No intptr_t dependency here */
|   |     #define __UNCONST(a) ((void *)(unsigned long)(const void *)(a))
|   |=20
|   | in <sys/cdefs.h>
|   |=20
|   | Any objections?
| 
| Is this to work around gcc and/or lint being overly aggressive
| in enforcing "const"ness of a type?  Or bugs in those tools?

No, the tools do what they were asked for. Write strchr(),
and make it work without warnings setting WARNS=3... The problem
is const castaways are parts of the apis of functions such as
strchr(), strtol() etc:

Here's our current strchr...

char *
strchr(const char *p, int ch)
{
	for (;; ++p) {
		if (*p == ch) {
			/* LINTED const cast-away */
			return((char *)p);
		}
		if (!*p)
			return((char *)NULL);
	}
}

christos