[Bug middle-end/77486] ubsan detects runtime error: left shift of negative value -3 at real_hash in real.c:2890

[zeccav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77486

--- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> ---
Still in trunk

/home/vitti/1tb/vitti/test/gcc-trunk-239276/gcc/real.c:2889:25: runtime error:
left shift of negative value -3