diff -u -r ../gcc-4.8.2/libcpp/files.c ./libcpp/files.c
--- ../gcc-4.8.2/libcpp/files.c	2013-03-06 17:18:40.000000000 +0100
+++ ./libcpp/files.c	2014-01-09 00:29:34.940181542 +0100
@@ -716,11 +716,13 @@
     cpp_error (pfile, CPP_DL_WARNING,
 	       "%s is shorter than expected", file->path);
 
+  off_t ot = (off_t) &file->st.st_size;
   file->buffer = _cpp_convert_input (pfile,
 				     CPP_OPTION (pfile, input_charset),
 				     buf, size + 16, total,
 				     &file->buffer_start,
-				     &file->st.st_size);
+				     &ot);
+  file->st.st_size = ot;
   file->buffer_valid = true;
 
   return true;