Provided by: systemtap-doc_2.3-1ubuntu1.4_all bug

NAME

       function::warn - Send a line to the warning stream

SYNOPSIS

           warn(msg:string)

ARGUMENTS

       msg
           The formatted message string

DESCRIPTION

       This function sends a warning message immediately to staprun. It is also sent over the
       bulk transport (relayfs) if it is being used. If the last characater is not a newline, the
       one is added.