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-rw-r--r--erts/emulator/beam/erl_bits.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_bits.h b/erts/emulator/beam/erl_bits.h
index 0f67733fa4..388d943755 100644
--- a/erts/emulator/beam/erl_bits.h
+++ b/erts/emulator/beam/erl_bits.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1999-2010. All Rights Reserved.
+ * Copyright Ericsson AB 1999-2011. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
@@ -150,7 +150,7 @@ void erts_bits_destroy_state(ERL_BITS_PROTO_0);
* NBYTES(x) returns the number of bytes needed to store x bits.
*/
-#define NBYTES(x) (((x) + 7) >> 3)
+#define NBYTES(x) (((Uint64)(x) + (Uint64) 7) >> 3)
#define BYTE_OFFSET(ofs) ((Uint) (ofs) >> 3)
#define BIT_OFFSET(ofs) ((ofs) & 7)