Coast was much too slow and ineffiecient, especially for large modules. Also, it was discovered that Coast in some cases returned erroneous values.
Consequently, Coast has been discontinued and is replaced with a new tool Cover with similar interface and functionality. Refer to the Tools User's Guide and Reference Manual for more information about Cover.
xref:m/1 and xref:d/1 return a
list of undefined functions in case the BEAM files do not contain debug
information.
xref represents unresolved calls with calls where the
module, the function or the number of arguments are atoms and integers
that are unlikely to occur in an Erlang system. Calls to
erlang:apply/2 and the like are included among the
external calls. This is in contrast to R7 where calls to
apply and spawn were used for representing
unresolved calls.
verbose has been
changed from true to false. The function
xm/1, which cross reference checks a module by calling
xref:m/1, has been added to the c module.
exref has now been removed,
use the new tool xref instead.