Provided by: systemtap-doc_2.9-2ubuntu2_all 

NAME
function::assert - evaluate assertion
SYNOPSIS
assert(expression:,msg:)
ARGUMENTS
expression
The expression to evaluate
msg
The formatted message string
DESCRIPTION
This function checks the expression and aborts the current running probe if expression evaluates to zero.
Uses error and may be caught by try{} catch{}.
SEE ALSO
tapset::logging(3stap)
SystemTap Tapset Reference April 2016 FUNCTION::ASSERT(3stap)