branches/zip:

Check that pthread_t can indeed be passed to Solaris atomic functions, instead
of assuming that it can be passed if 0 can be assigned to it. It could be that:
* 0 can be assigned, but pthread_t cannot be passed and
* 0 cannot be assigned but pthread_t can be passed

Better to check what we are interested in, not something else and make
assumptions.

ut/ut0auxconf_atomic_pthread_t_solaris.c

@@ -17,8 +17,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 *****************************************************************************/
 
 /*****************************************************************************
-If this program compiles, then pthread_t objects can be used as arguments
-to Solaris libc atomic functions.
+If this program compiles and returns 0, then pthread_t objects can be used as
+arguments to Solaris libc atomic functions.
 
 Created April 18, 2009 Vasil Dimov
 *****************************************************************************/
@@ -28,7 +28,26 @@ Created April 18, 2009 Vasil Dimov
 int
 main(int argc, char** argv)
 {
-	pthread_t	x = 0;
+	pthread_t	x1;
+	pthread_t	x2;
+	pthread_t	x3;
+
+	memset(&x1, 0x0, sizeof(x1));
+	memset(&x2, 0x0, sizeof(x2));
+	memset(&x3, 0x0, sizeof(x3));
+
+	if (sizeof(pthread_t) == 4) {
+
+		atomic_cas_32(&x1, x2, x3);
+
+	} else if (sizeof(pthread_t) == 8) {
+
+		atomic_cas_64(&x1, x2, x3);
+
+	} else {
+
+		return(1);
+	}
 
 	return(0);
 }