diff options
Diffstat (limited to 'lib')
4 files changed, 48 insertions, 5 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index ce292e1140..83ce875280 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -2,7 +2,7 @@ %%-------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2016. All Rights Reserved. +%% Copyright Ericsson AB 2006-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -1351,8 +1351,6 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State, Warns) -> {Msg, Force} = case t_is_none(ArgType0) of true -> - PatString = format_patterns(Pats), - PatTypes = [PatString, format_type(OrigArgType, State1)], %% See if this is covered by an earlier clause or if it %% simply cannot match OrigArgTypes = @@ -1360,14 +1358,24 @@ do_clause(C, Arg, ArgType0, OrigArgType, Map, State, Warns) -> true -> Any = t_any(), [Any || _ <- Pats]; false -> t_to_tlist(OrigArgType) end, + PatString = format_patterns(Pats), + ArgTypeString = format_type(OrigArgType, State1), + BindResOrig = + bind_pat_vars(Pats, OrigArgTypes, [], Map1, State1), Tag = - case bind_pat_vars(Pats, OrigArgTypes, [], Map1, State1) of + case BindResOrig of {error, bind, _, _, _} -> pattern_match; {error, record, _, _, _} -> record_match; {error, opaque, _, _, _} -> opaque_match; {_, _} -> pattern_match_cov end, - {{Tag, PatTypes}, false}; + PatTypes = case BindResOrig of + {error, opaque, _, _, OpaqueType} -> + [PatString, ArgTypeString, + format_type(OpaqueType, State1)]; + _ -> [PatString, ArgTypeString] + end, + {{Tag, PatTypes}, false}; false -> %% Try to find out if this is a default clause in a list %% comprehension and supress this. A real Hack(tm) diff --git a/lib/dialyzer/test/opaque_SUITE_data/results/weird b/lib/dialyzer/test/opaque_SUITE_data/results/weird new file mode 100644 index 0000000000..cffba85b9f --- /dev/null +++ b/lib/dialyzer/test/opaque_SUITE_data/results/weird @@ -0,0 +1,3 @@ + +weird_warning1.erl:15: The attempt to match a term of type #b{q::queue:queue(_)} against the pattern {'a', Dict} breaks the opacity of queue:queue(_) +weird_warning2.erl:13: The attempt to match a term of type <#a{d::dict:dict(_,_)},'my_key','my_value'> against the pattern <{'b', Queue}, Key, Value> breaks the opacity of dict:dict(_,_) diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning1.erl b/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning1.erl new file mode 100644 index 0000000000..094138e72b --- /dev/null +++ b/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning1.erl @@ -0,0 +1,18 @@ +-module(weird_warning1). +-export([public_func/0]). + +-record(a, { + d = dict:new() :: dict:dict() + }). + +-record(b, { + q = queue:new() :: queue:queue() + }). + +public_func() -> + add_element(#b{}, my_key, my_value). + +add_element(#a{d = Dict}, Key, Value) -> + dict:store(Key, Value, Dict); +add_element(#b{q = Queue}, Key, Value) -> + queue:in({Key, Value}, Queue). diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning2.erl b/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning2.erl new file mode 100644 index 0000000000..4e4512157b --- /dev/null +++ b/lib/dialyzer/test/opaque_SUITE_data/src/weird/weird_warning2.erl @@ -0,0 +1,14 @@ +-module(weird_warning2). +-export([public_func/0]). + +-record(a, {d = dict:new() :: dict:dict()}). + +-record(b, {q = queue:new() :: queue:queue()}). + +public_func() -> + add_element(#a{}, my_key, my_value). + +add_element(#a{d = Dict}, Key, Value) -> + dict:store(Key, Value, Dict); +add_element(#b{q = Queue}, Key, Value) -> + queue:in({Key, Value}, Queue). |