[Bug c++/124456] ICE: tree check: expected tree_vec, have array_ref in tsubst_pack_expansion, at cp/pt.cc:14138

[ppalka at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124456

--- Comment #8 from Patrick Palka <ppalka at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> Created attachment 63905 [details]
> gcc16-pr124456.patch
> 
> Actually this seems to work.
Makes sense, presumably this will make us defer the substitution via
PACK_EXPANSION_EXTRA_ARGS.