[Bug c++/120287] internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in is_std_substitution, at cp/mangle.cc:507

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120287

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With -std=c++0x #c1 ICEs starting with r5-2991-g5e0231c231404677aa1b9