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-rw-r--r--lib/tools/src/cover.erl2
-rw-r--r--lib/tools/test/cover_SUITE_data/b.erl8
2 files changed, 9 insertions, 1 deletions
diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl
index 113fa24bd5..31754015f7 100644
--- a/lib/tools/src/cover.erl
+++ b/lib/tools/src/cover.erl
@@ -1696,6 +1696,8 @@ fix_expr(T, Line, Bump) when is_tuple(T) ->
fix_expr(E, _Line, _Bump) ->
E.
+fix_clauses([], _Line, _Bump) ->
+ [];
fix_clauses(Cs, Line, Bump) ->
case bumps_line(lists:last(Cs), Line) of
true ->
diff --git a/lib/tools/test/cover_SUITE_data/b.erl b/lib/tools/test/cover_SUITE_data/b.erl
index 13f39b8cb9..0a418a58d8 100644
--- a/lib/tools/test/cover_SUITE_data/b.erl
+++ b/lib/tools/test/cover_SUITE_data/b.erl
@@ -1,5 +1,5 @@
-module(b).
--export([start/0, loop/0]).
+-export([start/0, loop/0, wait/0]).
start() ->
spawn(?MODULE, loop, []).
@@ -12,3 +12,9 @@ loop() ->
stop ->
done
end.
+
+%% This checks for a bug in expressions which have no
+%% "main" clauses (only after and friends) followed by
+%% a return value in the same line.
+wait() ->
+ receive after 1000 -> done end, ok.