splint is a tool for statically checking C programs for security
vulnerabilities and programming mistakes. Splint does many of
the traditional lint checks including unused declarations, type
inconsistencies, use before definition, unreachable code, ignored
return values, execution paths with no return, likely infinite loops,
and fall through cases.

More powerful checks are made possible by additional information given
in source code annotations.  Annotations are stylized comments that
document assumptions about functions, variables, parameters and types.
In addition to the checks specifically enabled by annotations, many of
the traditional lint checks are improved by exploiting this additional
information.

As more effort is put into annotating programs, better checking
results.  Splint is designed to be flexible and allow programmers to
select appropriate points on the effort-benefit curve for particular
projects.  As different checks are turned on and more information
is given in code annotations the number of bugs that can be detected
increases dramatically.

If you want splint to be used as the system default lint, then do this
after installing splint:
  cd /usr/bin ; ln -s splint lint
  cd /usr/man/man1 ; ln -s splint.1.gz lint.1.gz