> if (tree t = maybe_new_partial_specialization (type))
> {
> + if (processing_template_parmlist)
> + {
> + /* Some syntactically invalid code can confuse the compiler into
> + defining a specialization from inside a template parameter
> + list. Bail out now so that we won't ICE later. */
> + gcc_assert (seen_error ());
> + return error_mark_node;
> + }
Rather than decide it's a specialization and then fail, let's avoid
treating it as a specialization in the first place. I think we can
add a processing_template_parmlist check at the top where we avoid
trying to specialize lambdas.
Jason
