[Bug tree-optimization/57385] [tree-ssa] Possible segfault in fully_constant_vn_reference_p

[aivchenk at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57385

--- Comment #4 from Alexander Ivchenko <aivchenk at gmail dot com> ---
Bootstrapped and tested on x86_64 linux, sent to gcc-patches.

http://patchwork.ozlabs.org/patch/246036/