The function name-definition-locations
returns the locations of the definitions recorded for the name name in any of the dspec classes in classes.
For each known definition recorded-dspec names the definition that defined name in location, and location is a pathname or keyword as described in at-location.
name-definition-locations
does not use *active-finders*.
CL-USER 7 > (dspec:name-definition-locations
'(function) 'foo-bar)
(((DEFSTRUCT FOO) #P"C:/temp/hack.lisp"))
LispWorks User Guide and Reference Manual - 20 Sep 2017