Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

cause : e4c_exception
data : e4c_exception
debug : e4c_exception
default_message : e4c_exception_type
error_number : e4c_exception
file : e4c_debug_info
finalize_exception : e4c_context
function : e4c_debug_info
initialize_exception : e4c_context
line : e4c_debug_info
message : e4c_exception
name : e4c_exception
supertype : e4c_exception_type
termination_handler : e4c_context
type : e4c_exception
uncaught_handler : e4c_context