[Bug tree-optimization/65002] [5 Regression] ICE: Segmentation fault

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65002

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Sure, the __attribute__((const)) looks very much wrong to me, as it returns
what the reference points, it necessarily reads memory and therefore is at most
pure, but certainly not const.

But, we must not ICE even on invalid or questionable code.  And misplaced const
attribute isn't something we should hard error on, perhaps warn (I think there
is some PR about that and it is definitely non-trivial).