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-rw-r--r--lib/compiler/test/core_fold_SUITE.erl13
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl
index ce1aea5de0..bca8afb1b0 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -242,6 +242,8 @@ do_guard_try_catch(K, V) ->
false
end.
+-record(cover_opt_guard_try, {list=[]}).
+
coverage(Config) when is_list(Config) ->
?line {'EXIT',{{case_clause,{a,b,c}},_}} =
(catch cover_will_match_list_type({a,b,c})),
@@ -251,6 +253,9 @@ coverage(Config) when is_list(Config) ->
?line error = cover_will_match_lit_list(),
{ok,[a]} = cover_is_safe_bool_expr(a),
+ ok = cover_opt_guard_try(#cover_opt_guard_try{list=[a]}),
+ error = cover_opt_guard_try(#cover_opt_guard_try{list=[]}),
+
%% Make sure that we don't attempt to make literals
%% out of pids. (Putting a pid into a #c_literal{}
%% would crash later compiler passes.)
@@ -304,6 +309,14 @@ cover_is_safe_bool_expr(X) ->
false
end.
+cover_opt_guard_try(Msg) ->
+ if
+ length(Msg#cover_opt_guard_try.list) =/= 1 ->
+ error;
+ true ->
+ ok
+ end.
+
bsm_an_inlined(<<_:8>>, _) -> ok;
bsm_an_inlined(_, _) -> error.