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-rw-r--r--cpukit/libnetworking/sys/mbuf.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpukit/libnetworking/sys/mbuf.h b/cpukit/libnetworking/sys/mbuf.h
index 450787573c..bad425e4ae 100644
--- a/cpukit/libnetworking/sys/mbuf.h
+++ b/cpukit/libnetworking/sys/mbuf.h
@@ -63,7 +63,7 @@
*/
#define mtod(m, t) ((t)((m)->m_data))
#define dtom(x) ((struct mbuf *)((intptr_t)(x) & ~(MSIZE-1)))
-#define mtocl(x) (((u_long)(x) - (u_long)mbutl) >> MCLSHIFT)
+#define mtocl(x) (((uintptr_t)(x) - (uintptr_t)mbutl) >> MCLSHIFT)
#define cltom(x) ((caddr_t)((u_long)mbutl + ((u_long)(x) << MCLSHIFT)))
/*