shiftNegative
ftp://ftp.de.debian.org/debian/pool/main/c/cmucl/cmucl_21d.orig.tar.bz2
src/lisp/s_expm1.c:215:49: error: Shifting by a negative value is undefined behaviour [shiftNegative]
ftp://ftp.de.debian.org/debian/pool/main/c/colmap/colmap_3.10.orig.tar.gz
colmap-3.10/src/thirdparty/PoissonRecon/MultiGridOctreeData.h:148:115: error: Shifting by a negative value is undefined behaviour [shiftNegative]