used to determine current function and module
function being called, null if called indirectly
function parameter (this if null)
initializer for param
true if the parameter is the msg argument to assert(bool, msg).
do not print error messages
true if pointers to the stack can escape via assignment
Function parameter par is being initialized to arg, and par may escape. Detect if scoped values can escape this way. Print error messages when these are detected.