1 files changed, 5 insertions, 0 deletions
diff --git a/include/fibheap.h b/include/fibheap.h
index fc37f9ef6..4eebaf13b 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__
+  __extension__ unsigned long int degree : 31;
+  __extension__ unsigned long int mark : 1;
+#else
   unsigned int degree : 31;
   unsigned int mark : 1;
+#endif
 } *fibnode_t;
 
 extern fibheap_t fibheap_new PARAMS ((void));