diff options
| -rw-r--r-- | src/rebar_xref.erl | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/rebar_xref.erl b/src/rebar_xref.erl index c210486..84d422e 100644 --- a/src/rebar_xref.erl +++ b/src/rebar_xref.erl @@ -188,8 +188,14 @@ find_mfa_source({M, F, A}) -> %% Extract the original source filename from the abstract code [{attribute, 1, file, {Source, _}} | _] = Code, %% Extract the line number for a given function def - [{function, Line, F, _, _}] = [E || E <- Code, - safe_element(1, E) == function, - safe_element(3, E) == F, - safe_element(4, E) == A], - {Source, Line}. + Fn = [E || E <- Code, + safe_element(1, E) == function, + safe_element(3, E) == F, + safe_element(4, E) == A], + case Fn of + [{function, Line, F, _, _}] -> {Source, Line}; + %% do not crash if functions are exported, even though they + %% are not in the source. + %% parameterized modules add new/1 and instance/1 for example. + [] -> {Source, function_not_found} + end. |