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-rw-r--r--cpukit/libblock/src/bdbuf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpukit/libblock/src/bdbuf.c b/cpukit/libblock/src/bdbuf.c
index c8c7e65722..fb6ea45ebc 100644
--- a/cpukit/libblock/src/bdbuf.c
+++ b/cpukit/libblock/src/bdbuf.c
@@ -19,7 +19,7 @@
#include "rtems/bdbuf.h"
/* Fatal errors: */
-#define BLKDEV_FATAL_ERROR(n) (('B' << 24) | ((n) & 0x00FFFFFF))
+#define BLKDEV_FATAL_ERROR(n) (((unsigned32)'B' << 24) | ((unsigned32)(n) & (unsigned32)0x00FFFFFF))
#define BLKDEV_FATAL_BDBUF_CONSISTENCY BLKDEV_FATAL_ERROR(1)
#define BLKDEV_FATAL_BDBUF_SWAPOUT BLKDEV_FATAL_ERROR(2)