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-rw-r--r--stdlib/stdlib.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index 6bf708a167..41fb7e711e 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -415,7 +415,8 @@ struct drand48_data
     unsigned short int __old_x[3]; /* Old state.  */
     unsigned short int __c;	/* Additive const. in congruential formula.  */
     unsigned short int __init;	/* Flag for initializing.  */
-    unsigned long long int __a;	/* Factor in congruential formula.  */
+    __extension__ unsigned long long int __a;	/* Factor in congruential
+						   formula.  */
   };
 
 /* Return non-negative, double-precision floating-point value in [0.0,1.0).  */