[Bug libstdc++/62119] dangling reference : gslice_array's copy constructor

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62119

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
PR 63314 points out the same problem exists in mask_array and indirect_array.