[Bug c++/83778] [8 regression] g++.dg/ext/altivec-cell-2.C fails starting with r256448

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83778

--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I still haven't been able to reproduce this; sorry.