c++/9778 -- causing patch

[Wolfgang Bangerth]

This patch

> 2003-01-16  Jeffrey D. Oldham  <oldham@codesourcery.com>
>
>       * cp-tree.h (tsubst_copy_and_build): New declaration.
>       * pt.c (tsubst_copy): Remove 'build_expr_from_tree' from comment.
>       (tsubst_expr): Use 'tsubst_copy_and_build'.  Update initial comment.
>       (tsubst_copy_and_build): New function.

seems to be causing the ICE in PR 9778. A small testcase is
----------------------------
namespace NS {
  template <int N> void foo ();
}

template <int N> struct X {
    int m;
    int g () {
      NS::foo<sizeof(m)>();
    }
};

template class X<2>;
---------------------------

Jeffrey, would you mind taking a look? This report seems to be the last 
that prevents me from building (and then testing again) my library with 
mainline...

If you are lucky, the fix to this report also fixes PR 9749, see the 
comment in 9778.

Thanks
  Wolfgang

-------------------------------------------------------------------------
Wolfgang Bangerth             email:            bangerth@ticam.utexas.edu
                              www: http://www.ticam.utexas.edu/~bangerth/