[Bug libstdc++/57997] Segmentation fault after returning valarray expression from an auto function

[gdr at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57997

--- Comment #3 from Gabriel Dos Reis <gdr at gcc dot gnu.org> ---
Also, there might be some interactions with move semantics; I don't know.