diff -r a264ef19217e usr/src/uts/common/sys/fs/pc_node.h
--- a/usr/src/uts/common/sys/fs/pc_node.h	Thu May 03 15:56:05 2012 +0200
+++ b/usr/src/uts/common/sys/fs/pc_node.h	Sun May 06 21:43:09 2012 +0200
@@ -81,8 +81,8 @@
  * Make a unique integer for a file
  */
 #define	pc_makenodeid(BN, OFF, ATTR, SCLUSTER, ENTPS) \
-	(ino_t)((ATTR) & PCA_DIR ? \
-		(uint32_t)(-(SCLUSTER) - 1) : \
+	(ino_t)(uint32_t)((ATTR) & PCA_DIR ?	      \
+		(-(SCLUSTER) - 1) : \
 		((BN) * (ENTPS)) + ((OFF) / sizeof (struct pcdir)))
 
 #define	NPCHASH 1