diff --git a/include/ChangeLog b/include/ChangeLog
index 4328b98a4..e1c333dee 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2003-12-18  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* include/fibheap.h (fibnode): Use unsigned long int for
+	bit-fields if __GNUC__ is defined.
+
 2003-12-04  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* bfdlink.h (bfd_link_info): Change relax_finalizing to
diff --git a/include/fibheap.h b/include/fibheap.h
index fc37f9ef6..addef19db 100644
--- a/include/fibheap.h
+++ b/include/fibheap.h
@@ -59,8 +59,13 @@ typedef struct fibnode
   struct fibnode *right;
   fibheapkey_t key;
   void *data;
+#ifdef __GNUC__
+  unsigned long int degree : 31;
+  unsigned long int mark : 1;
+#else
   unsigned int degree : 31;
   unsigned int mark : 1;
+#endif
 } *fibnode_t;
 
 extern fibheap_t fibheap_new PARAMS ((void));