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diff --git a/utils/lzma/C/Bcj2.h b/utils/lzma/C/Bcj2.h
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+++ b/utils/lzma/C/Bcj2.h
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+/* Bcj2.h -- Converter for x86 code (BCJ2)
+2013-01-18 : Igor Pavlov : Public domain */
+
+#ifndef __BCJ2_H
+#define __BCJ2_H
+
+#include "7zTypes.h"
+
+EXTERN_C_BEGIN
+
+/*
+Conditions:
+  outSize <= FullOutputSize,
+  where FullOutputSize is full size of output stream of x86_2 filter.
+
+If buf0 overlaps outBuf, there are two required conditions:
+  1) (buf0 >= outBuf)
+  2) (buf0 + size0 >= outBuf + FullOutputSize).
+
+Returns:
+  SZ_OK
+  SZ_ERROR_DATA - Data error
+*/
+
+int Bcj2_Decode(
+    const Byte *buf0, SizeT size0,
+    const Byte *buf1, SizeT size1,
+    const Byte *buf2, SizeT size2,
+    const Byte *buf3, SizeT size3,
+    Byte *outBuf, SizeT outSize);
+
+EXTERN_C_END
+
+#endif