[Bug c++/84424] [8 Regression] ICE on C++ code: tree check: expected record_type or union_type or qual_union_type, have vector_type in reduced_constant_expression_p, at cp/constexpr.c:1766

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84424

--- Comment #2 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Martin Sebor from comment #1)
> I can confirm it with r257668 but not with the top of trunk (r257768).  The
> regression was introduced in r251948.  I vaguely remember a bug with a test
> case similar to this one go by but I can't find it.  Can you please retry
> with a newer revision and report back?

My latest build is r257757, which still ICEs on this test. 

I am building the top of the trunk.