ctunullpointer
ftp://ftp.de.debian.org/debian/pool/main/c/cvs/cvs_1.12.13+real.orig.tar.gz
head cvs-1.12.13/src/subr.c:210:13: error: Null pointer dereference: s [ctunullpointer]
2.22.0 cvs-1.12.13/src/subr.c:210:13: error: Null pointer dereference: s [ctunullpointer]