Merge branch 'maint'

14 files changed, 95 insertions, 16 deletions

diff --git a/lib/dialyzer/test/Makefile b/lib/dialyzer/test/Makefile
index 47deb17f1d..6a1abce943 100644
--- a/lib/dialyzer/test/Makefile
+++ b/lib/dialyzer/test/Makefile
@@ -30,5 +30,5 @@ release_tests_spec:
 	$(INSTALL_DATA) $(AUXILIARY_FILES) $(RELSYSDIR)
 	@tar cf - *_SUITE_data | (cd $(RELSYSDIR); tar xf -)
 	cd $(RELSYSDIR);\
-	erl -make;\
+	erlc dialyzer_common.erl file_utils.erl;\
 	erl -noshell -run dialyzer_common create_all_suites -s erlang halt
diff --git a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour
index a38e662ccf..8cecabccaa 100644
--- a/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour
+++ b/lib/dialyzer/test/behaviour_SUITE_data/results/sample_behaviour
@@ -1,9 +1,9 @@
 
-sample_callback_wrong.erl:15: The inferred return type of sample_callback_2/0 (42) has nothing in common with atom(), which is the expected return type for the callback of sample_behaviour behaviour
-sample_callback_wrong.erl:16: The inferred return type of sample_callback_3/0 ('fair') has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour
-sample_callback_wrong.erl:17: The inferred return type of sample_callback_4/1 ('fail') has nothing in common with 'ok', which is the expected return type for the callback of sample_behaviour behaviour
-sample_callback_wrong.erl:19: The inferred return type of sample_callback_5/1 (string()) has nothing in common with 'fail' | 'ok', which is the expected return type for the callback of sample_behaviour behaviour
-sample_callback_wrong.erl:19: The inferred type for the 1st argument of sample_callback_5/1 (atom()) is not a supertype of 1..255, which is expected type for this argument in the callback of the sample_behaviour behaviour
-sample_callback_wrong.erl:21: The inferred return type of sample_callback_6/3 ({'okk',number()}) has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour
-sample_callback_wrong.erl:21: The inferred type for the 3rd argument of sample_callback_6/3 (atom()) is not a supertype of string(), which is expected type for this argument in the callback of the sample_behaviour behaviour
-sample_callback_wrong.erl:3: Undefined callback function sample_callback_1/0 (behaviour 'sample_behaviour')
+sample_callback_wrong.erl:16: The inferred return type of sample_callback_2/0 (42) has nothing in common with atom(), which is the expected return type for the callback of sample_behaviour behaviour
+sample_callback_wrong.erl:17: The inferred return type of sample_callback_3/0 ('fair') has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour
+sample_callback_wrong.erl:18: The inferred return type of sample_callback_4/1 ('fail') has nothing in common with 'ok', which is the expected return type for the callback of sample_behaviour behaviour
+sample_callback_wrong.erl:20: The inferred return type of sample_callback_5/1 (string()) has nothing in common with 'fail' | 'ok', which is the expected return type for the callback of sample_behaviour behaviour
+sample_callback_wrong.erl:20: The inferred type for the 1st argument of sample_callback_5/1 (atom()) is not a supertype of 1..255, which is expected type for this argument in the callback of the sample_behaviour behaviour
+sample_callback_wrong.erl:22: The inferred return type of sample_callback_6/3 ({'okk',number()}) has nothing in common with 'fail' | {'ok',1..255}, which is the expected return type for the callback of sample_behaviour behaviour
+sample_callback_wrong.erl:22: The inferred type for the 3rd argument of sample_callback_6/3 (atom()) is not a supertype of string(), which is expected type for this argument in the callback of the sample_behaviour behaviour
+sample_callback_wrong.erl:4: Undefined callback function sample_callback_1/0 (behaviour 'sample_behaviour')
diff --git a/lib/dialyzer/test/behaviour_SUITE_data/src/custom_sup.erl b/lib/dialyzer/test/behaviour_SUITE_data/src/custom_sup.erl
new file mode 100644
index 0000000000..8ec84d798f
--- /dev/null
+++ b/lib/dialyzer/test/behaviour_SUITE_data/src/custom_sup.erl
@@ -0,0 +1,37 @@
+%%% Dialyzer was giving a warning with this input because of a bug in the
+%%% substitution of remote types in specs. Remote types in the first element of
+%%% a tuple would not update the tuple's tag set and we could end up with a
+%%% non-normalized representation.
+%%%
+%%% Reported by Damian Dobroczyński on 29/02/2012
+
+-module(custom_sup).
+
+-behavior(supervisor).
+
+-export([init/1]).
+
+-spec init(atom()) ->
+	{ok, {{supervisor:strategy(), non_neg_integer(), non_neg_integer()},
+	      [supervisor:child_spec()]}} | ignore.
+
+init(StorageName) ->
+  Strategy = {one_for_all, 100, 1},
+  %% get application-wide storage parameters
+  case application:get_env(storage) of
+    undefined ->
+      ignore;
+    {ok, Storage} ->
+      BackendId   = proplists:get_value(backend, Storage),
+      BackendArgs = proplists:get_value(args, Storage),
+      if
+        (BackendId =:= undefined) orelse (BackendArgs =:= undefined) ->
+          ignore;
+        true ->
+          {ok, {Strategy,
+                 [{id1, {a_module, start_link, []},
+		   permanent, 5000, worker, [a_module]},
+                  {id2, {another_module, start_link, []},
+		   permanent, 5000, worker, [another_module]}]}}
+      end
+  end.
diff --git a/lib/dialyzer/test/behaviour_SUITE_data/src/sample_behaviour/sample_callback_wrong.erl b/lib/dialyzer/test/behaviour_SUITE_data/src/sample_behaviour/sample_callback_wrong.erl
index 02a063fab7..430494c48c 100644
--- a/lib/dialyzer/test/behaviour_SUITE_data/src/sample_behaviour/sample_callback_wrong.erl
+++ b/lib/dialyzer/test/behaviour_SUITE_data/src/sample_behaviour/sample_callback_wrong.erl
@@ -1,6 +1,7 @@
 -module(sample_callback_wrong).
 
--behaviour(sample_behaviour).
+%% This attribute uses the american spelling of 'behaviour'.
+-behavior(sample_behaviour).
 
 -export([
 %	 sample_callback_1/0,
diff --git a/lib/dialyzer/test/dialyzer_common.erl b/lib/dialyzer/test/dialyzer_common.erl
index 51766a4604..d2b1026c06 100644
--- a/lib/dialyzer/test/dialyzer_common.erl
+++ b/lib/dialyzer/test/dialyzer_common.erl
@@ -216,10 +216,13 @@ get_suites(Dir) ->
     end.
 
 suffix(String, Suffix) ->
-    Index = string:rstr(String, Suffix),
-    case string:substr(String, Index) =:= Suffix of
-	true -> {yes, string:sub_string(String,1,Index-1)};
-	false -> no
+    case string:rstr(String, Suffix) of
+	0 -> no;
+	Index ->
+	    case string:substr(String, Index) =:= Suffix of
+		true -> {yes, string:sub_string(String,1,Index-1)};
+		false -> no
+	    end
     end.
 
 -spec create_suite(string()) -> 'ok'.
diff --git a/lib/dialyzer/test/opaque_SUITE_data/results/multiple_wrong_opaques b/lib/dialyzer/test/opaque_SUITE_data/results/multiple_wrong_opaques
new file mode 100644
index 0000000000..18ece8820c
--- /dev/null
+++ b/lib/dialyzer/test/opaque_SUITE_data/results/multiple_wrong_opaques
@@ -0,0 +1,2 @@
+
+multiple_wrong_opaques.erl:5: Invalid type specification for function multiple_wrong_opaques:weird/1. The success typing is ('gazonk') -> 42
diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/multiple_wrong_opaques.erl b/lib/dialyzer/test/opaque_SUITE_data/src/multiple_wrong_opaques.erl
new file mode 100644
index 0000000000..9e695cec1d
--- /dev/null
+++ b/lib/dialyzer/test/opaque_SUITE_data/src/multiple_wrong_opaques.erl
@@ -0,0 +1,8 @@
+-module(multiple_wrong_opaques).
+
+-export([weird/1]).
+
+-spec weird(dict() | gb_tree()) -> 42.
+
+weird(gazonk) -> 42.
+
diff --git a/lib/dialyzer/test/options1_SUITE_data/results/compiler b/lib/dialyzer/test/options1_SUITE_data/results/compiler
index e82087ae86..6399e3e36b 100644
--- a/lib/dialyzer/test/options1_SUITE_data/results/compiler
+++ b/lib/dialyzer/test/options1_SUITE_data/results/compiler
@@ -20,6 +20,7 @@ cerl_inline.erl:2333: The pattern 'true' can never match the type 'false'
 cerl_inline.erl:2355: The pattern 'true' can never match the type 'false'
 cerl_inline.erl:238: The pattern 'true' can never match the type 'false'
 cerl_inline.erl:2436: Function filename/1 will never be called
+cerl_inline.erl:244: Function counter_stats/0 will never be called
 cerl_inline.erl:2700: The pattern 'true' can never match the type 'false'
 cerl_inline.erl:2730: The pattern <{F, L, D}, Vs> can never match the type <[1..255,...],[any()]>
 cerl_inline.erl:2738: The pattern <{F, L, D}, Vs> can never match the type <[1..255,...],[any()]>
diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/inets b/lib/dialyzer/test/r9c_SUITE_data/results/inets
index 0e8ddf5492..d789d8d246 100644
--- a/lib/dialyzer/test/r9c_SUITE_data/results/inets
+++ b/lib/dialyzer/test/r9c_SUITE_data/results/inets
@@ -8,6 +8,7 @@ http_lib.erl:424: The variable _ can never match since previous clauses complete
 http_lib.erl:438: The variable _ can never match since previous clauses completely covered the type any()
 http_lib.erl:99: Function getHeaderValue/2 will never be called
 httpc_handler.erl:660: Function exit_session_ok/2 has no local return
+httpc_handler.erl:676: Function format_time/0 will never be called
 httpc_manager.erl:145: The pattern {ErrorReply, State2} can never match the type {{'ok',number()},number(),#state{reqid::number()}}
 httpc_manager.erl:160: The pattern {ErrorReply, State2} can never match the type {{'ok',number()},number(),#state{reqid::number()}}
 httpc_manager.erl:478: The pattern {'error', Reason} can never match the type 'ok' | {number(),#session{clientclose::boolean(),pipeline::[],quelength::1}}
diff --git a/lib/dialyzer/test/small_SUITE_data/results/cerl_hipeify b/lib/dialyzer/test/small_SUITE_data/results/cerl_hipeify
index 87bf6f309f..06dc0d63ee 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/cerl_hipeify
+++ b/lib/dialyzer/test/small_SUITE_data/results/cerl_hipeify
@@ -1,4 +1,4 @@
 
 cerl_hipeify.erl:370: Function will never be called
-cerl_hipeify.erl:370: Guard test fun((none()) -> none()) =:= F::{_,_,_} | {_,_,_,_} | {_,_,_,_,_} | {_,_,_,_,_,_} | {_,_,_,_,_,_,_} can never succeed
+cerl_hipeify.erl:370: Guard test fun((none()) -> no_return()) =:= F::{_,_,_} | {_,_,_,_} | {_,_,_,_,_} | {_,_,_,_,_,_} | {_,_,_,_,_,_,_} can never succeed
 cerl_hipeify.erl:641: Function env__new_function_name/2 will never be called
diff --git a/lib/dialyzer/test/small_SUITE_data/results/inf_loop2 b/lib/dialyzer/test/small_SUITE_data/results/inf_loop2
index 7e9972ad98..142e4b2c37 100644
--- a/lib/dialyzer/test/small_SUITE_data/results/inf_loop2
+++ b/lib/dialyzer/test/small_SUITE_data/results/inf_loop2
@@ -1,4 +1,4 @@
 
 inf_loop2.erl:18: Function test/0 has no local return
 inf_loop2.erl:19: The call lists:reverse('gazonk') will never return since it differs in the 1st argument from the success typing arguments: ([any()])
-inf_loop2.erl:22: Function loop/0 has no local return
+inf_loop2.erl:22: Function loop/0 will never be called
diff --git a/lib/dialyzer/test/small_SUITE_data/results/no_local_return b/lib/dialyzer/test/small_SUITE_data/results/no_local_return
new file mode 100644
index 0000000000..6ca1ed51d8
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/no_local_return
@@ -0,0 +1,3 @@
+
+no_local_return.erl:11: Function bar/1 will never be called
+no_local_return.erl:8: Function foo/0 will never be called
diff --git a/lib/dialyzer/test/small_SUITE_data/src/no_local_return.erl b/lib/dialyzer/test/small_SUITE_data/src/no_local_return.erl
new file mode 100644
index 0000000000..4e1a0b015a
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/no_local_return.erl
@@ -0,0 +1,12 @@
+-module(no_local_return).
+
+%% NOTE: No function is exported.  Dialyzer produced a bogus
+%%      'Function foo/0 has no local return' warning
+%% when in fact typer was finding correct return values for both
+%% these functions.
+
+foo() ->
+ bar(42).
+
+bar(X) ->
+ lists:duplicate(X, gazonk).
diff --git a/lib/dialyzer/test/small_SUITE_data/src/on_load.erl b/lib/dialyzer/test/small_SUITE_data/src/on_load.erl
new file mode 100644
index 0000000000..16533a9caa
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/on_load.erl
@@ -0,0 +1,11 @@
+%%% This is to ensure that "on_load" functions are never reported as unused.
+
+-module(on_load).
+
+-export([foo/0]).
+
+-on_load(bar/0).
+
+foo() -> ok.
+
+bar() -> ok.