--- a/gcc/convert.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/convert.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,5 +1,5 @@
 /* Definition of functions in convert.c.
-   Copyright (C) 1993, 2000, 2003, 2004, 2007 Free Software Foundation, Inc.
+   Copyright (C) 1993-2017 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -21,10 +21,23 @@
 #define GCC_CONVERT_H
 
 extern tree convert_to_integer (tree, tree);
+extern tree convert_to_integer_maybe_fold (tree, tree, bool);
 extern tree convert_to_pointer (tree, tree);
+extern tree convert_to_pointer_maybe_fold (tree, tree, bool);
 extern tree convert_to_real (tree, tree);
+extern tree convert_to_real_maybe_fold (tree, tree, bool);
 extern tree convert_to_fixed (tree, tree);
 extern tree convert_to_complex (tree, tree);
+extern tree convert_to_complex_maybe_fold (tree, tree, bool);
 extern tree convert_to_vector (tree, tree);
 
+extern inline tree convert_to_integer_nofold (tree t, tree x)
+{ return convert_to_integer_maybe_fold (t, x, false); }
+extern inline tree convert_to_pointer_nofold (tree t, tree x)
+{ return convert_to_pointer_maybe_fold (t, x, false); }
+extern inline tree convert_to_real_nofold (tree t, tree x)
+{ return convert_to_real_maybe_fold (t, x, false); }
+extern inline tree convert_to_complex_nofold (tree t, tree x)
+{ return convert_to_complex_maybe_fold (t, x, false); }
+
 #endif /* GCC_CONVERT_H */