[Bug c++/40975] [4.3/4.4/4.5/4.6 Regression] ICE in copy_tree_r on array new

[dnovillo at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40975

--- Comment #8 from dnovillo at google dot com <dnovillo at google dot com> 2011-04-28 17:37:29 UTC ---
On Thu, Apr 28, 2011 at 13:01, jason at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40975
>
> Jason Merrill <jason at gcc dot gnu.org> changed:
>
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                 CC|                            |dnovillo at gcc dot gnu.org
>
> --- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> 2011-04-28 15:57:06 UTC ---
> This was broken by the tree-ssa merge, r81764, which introduced STATEMENT_LIST
> and caused copy_tree_r to abort on it.  Diego, do you happen to remember the
> rationale for that?  Why can't we copy a STATEMENT_LIST in a
> statement-expression?

Oh, boy.  Sorry.  I do not remember why we added that assertion.  It
may have been to avoid recursing twice, since copy_tree_r is typically
called to copy individual statements in a list.  So, we never expected
to find STATEMENT_LISTs inside a single statement.

This may be largely unnecessary now.


Diego.
>
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