shiftNegative
ftp://ftp.de.debian.org/debian/pool/main/r/rust-xxhash-c-sys/rust-xxhash-c-sys_0.8.7.orig.tar.gz
xxhash-c-sys-0.8.7/src/c/xxhash.h:4576:23: error: Shifting by a negative value is undefined behaviour [shiftNegative]
ftp://ftp.de.debian.org/debian/pool/main/s/seqan-raptor/seqan-raptor_3.0.1+ds.orig.tar.xz
raptor-3.0.1-Source/lib/xxHash/xxhash.h:4186:23: error: Shifting by a negative value is undefined behaviour [shiftNegative]