https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88795

David Malcolm <dmalcolm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |dmalcolm at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |dmalcolm at gcc dot 
gnu.org

--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
ICE occurs at gcc/tree.c:6811 here:

6809        case FUNCTION_TYPE:
6810          for (tree t = TYPE_ARG_TYPES (type); t; t = TREE_CHAIN (t))
6811            if (TREE_VALUE (t) != error_mark_node)
6812              hstate.add_object (TYPE_HASH (TREE_VALUE (t)));
6813          break;

where "t" itself is error_mark_node, and so the TREE_VALUE (t) is erroneous.

Am working on a fix

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