[Bug c++/88146] ice in tsubst_copy, at cp/pt.c:16014

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88146

Alexandre Oliva <aoliva at gcc dot gnu.org> changed:

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

--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 45162
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45162&action=edit
candidate patch

This patch fixes the additional problem.  We have a (...) ctor in a base class,
reexported with an access declaration.  We try to do_build_copy_constructor
from that, but then FUNCTION_FIRST_USER_PARM is NULL, and we attempt to
dereference it unconditionally, since copy ctors normally have at least one
user parm.  Should this one even match as a copy ctor?  Checking...