I just disabled lint -w on libradius. One of the problems is that it warns
about constructs like

  vsnprintf(errmsg, 128, ....);

with:

radlib.c(111): warning: conversion to 'unsigned long' due to prototype, arg #2 [259]

Actually the 128 is a macro there, but it shouldn't matter.

Can anybody explain the value of this warning for int literals and conversion
to bigger size? IMHO it is a bug in lint that should be fixed.

Martin