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-rw-r--r--lib/dialyzer/src/dialyzer_typesig.erl22
-rw-r--r--lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy4
-rw-r--r--lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy_28
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy.erl14
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy_2.erl14
5 files changed, 55 insertions, 7 deletions
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl
index 30aec59d22..92868b6878 100644
--- a/lib/dialyzer/src/dialyzer_typesig.erl
+++ b/lib/dialyzer/src/dialyzer_typesig.erl
@@ -2161,13 +2161,21 @@ get_apply_constr(FunLabels, Dst, ArgTypes, #state{callgraph = CG} = State) ->
case lists:member(error, MFAs) of
true -> error;
false ->
- Constrs = [begin
- State1 = state__new_constraint_context(State),
- State2 = get_plt_constr(MFA, Dst, ArgTypes, State1),
- state__cs(State2)
- end || {ok, MFA} <- MFAs],
- ApplyConstr = mk_disj_constraint_list(Constrs),
- {ok, state__store_conj(ApplyConstr, State)}
+ Constrs0 =
+ [begin
+ State1 = state__new_constraint_context(State),
+ try get_plt_constr(MFA, Dst, ArgTypes, State1) of
+ State2 -> state__cs(State2)
+ catch
+ throw:error -> error
+ end
+ end || {ok, MFA} <- MFAs],
+ case [C || C <- Constrs0, C =/= error] of
+ [] -> throw(error);
+ Constrs ->
+ ApplyConstr = mk_disj_constraint_list(Constrs),
+ {ok, state__store_conj(ApplyConstr, State)}
+ end
end.
state__scc(#state{scc = SCC}) ->
diff --git a/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy b/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy
new file mode 100644
index 0000000000..7ce440a60d
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy
@@ -0,0 +1,4 @@
+
+higher_order_discrepancy.erl:11: The call higher_order_discrepancy:g('foo') will never return since it differs in the 1st argument from the success typing arguments: ('bar')
+higher_order_discrepancy.erl:14: Function g/1 has no local return
+higher_order_discrepancy.erl:14: The pattern 'bar' can never match the type 'foo'
diff --git a/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy_2 b/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy_2
new file mode 100644
index 0000000000..c1c7dbbfcc
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/higher_order_discrepancy_2
@@ -0,0 +1,8 @@
+
+higher_order_discrepancy_2.erl:11: The call higher_order_discrepancy_2:f('foo') will never return since it differs in the 1st argument from the success typing arguments: ('bar')
+higher_order_discrepancy_2.erl:11: The call higher_order_discrepancy_2:g('foo') will never return since it differs in the 1st argument from the success typing arguments: ('baz')
+higher_order_discrepancy_2.erl:13: Function f/1 has no local return
+higher_order_discrepancy_2.erl:13: The pattern 'bar' can never match the type 'foo'
+higher_order_discrepancy_2.erl:14: Function g/1 has no local return
+higher_order_discrepancy_2.erl:14: The pattern 'baz' can never match the type 'foo'
+higher_order_discrepancy_2.erl:5: Function test/1 has no local return
diff --git a/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy.erl b/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy.erl
new file mode 100644
index 0000000000..ff5ee6bac4
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy.erl
@@ -0,0 +1,14 @@
+-module(higher_order_discrepancy).
+
+-export([test/1]).
+
+test(X) ->
+ F =
+ case X of
+ 1 -> fun f/1;
+ 2 -> fun g/1
+ end,
+ F(foo).
+
+f(foo) -> ok.
+g(bar) -> ok.
diff --git a/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy_2.erl b/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy_2.erl
new file mode 100644
index 0000000000..4b0d4f6b45
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/higher_order_discrepancy_2.erl
@@ -0,0 +1,14 @@
+-module(higher_order_discrepancy_2).
+
+-export([test/1]).
+
+test(X) ->
+ F =
+ case X of
+ 1 -> fun f/1;
+ 2 -> fun g/1
+ end,
+ F(foo).
+
+f(bar) -> ok.
+g(baz) -> ok.