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diff --git a/libcutl/cutl/fs/exception.hxx b/libcutl/cutl/fs/exception.hxx
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+// file : cutl/fs/exception.hxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef CUTL_FS_EXCEPTION_HXX
+#define CUTL_FS_EXCEPTION_HXX
+
+#include <cutl/exception.hxx>
+
+namespace cutl
+{
+ namespace fs
+ {
+ struct LIBCUTL_EXPORT error: exception
+ {
+ error (int code): code_ (code) {}
+
+ // Error code (errno).
+ //
+ int
+ code () const
+ {
+ return code_;
+ }
+
+ virtual char const*
+ what () const throw ();
+
+ private:
+ int code_;
+ };
+ }
+}
+
+#endif // CUTL_FS_EXCEPTION_HXX