Author: jhibbits
Date: Sat Feb 20 01:34:13 2016
New Revision: 295833
URL: https://svnweb.freebsd.org/changeset/base/295833

Log:
  Fix the definition of RM_MAX_END.
  
  Even though casting from signed to unsigned is well-defined in C, it's better 
to
  first cast to the larger unsigned type, then negate.

Modified:
  head/sys/sys/rman.h

Modified: head/sys/sys/rman.h
==============================================================================
--- head/sys/sys/rman.h Sat Feb 20 01:32:58 2016        (r295832)
+++ head/sys/sys/rman.h Sat Feb 20 01:34:13 2016        (r295833)
@@ -61,7 +61,7 @@ enum  rman_type { RMAN_UNINIT = 0, RMAN_G
  */
 #define RM_TEXTLEN     32
 
-#define        RM_MAX_END      ((rman_res_t)~0)
+#define        RM_MAX_END      (~(rman_res_t)0)
 
 #define        RMAN_IS_DEFAULT_RANGE(s,e)      ((s) == 0 && (e) == RM_MAX_END)
 
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