diff options
Diffstat (limited to 'lib/dialyzer/test/plt_SUITE.erl')
| -rw-r--r-- | lib/dialyzer/test/plt_SUITE.erl | 58 |
1 files changed, 57 insertions, 1 deletions
diff --git a/lib/dialyzer/test/plt_SUITE.erl b/lib/dialyzer/test/plt_SUITE.erl index ecbac14e5d..16180a7435 100644 --- a/lib/dialyzer/test/plt_SUITE.erl +++ b/lib/dialyzer/test/plt_SUITE.erl @@ -7,12 +7,15 @@ -include("dialyzer_test_constants.hrl"). -export([suite/0, all/0, build_plt/1, beam_tests/1, update_plt/1, + local_fun_same_as_callback/1, run_plt_check/1, run_succ_typings/1]). suite() -> [{timetrap, ?plt_timeout}]. -all() -> [build_plt, beam_tests, update_plt, run_plt_check, run_succ_typings]. +all() -> + [build_plt, beam_tests, update_plt, run_plt_check, run_succ_typings, + local_fun_same_as_callback]. build_plt(Config) -> OutDir = ?config(priv_dir, Config), @@ -158,6 +161,59 @@ update_plt(Config) -> {init_plt, Plt}] ++ Opts), ok. +%%% If a behaviour module contains an non-exported function with the same name +%%% as one of the behaviour's callbacks, the callback info was inadvertently +%%% deleted from the PLT as the dialyzer_plt:delete_list/2 function was cleaning +%%% up the callback table. This bug was reported by Brujo Benavides. + +local_fun_same_as_callback(Config) when is_list(Config) -> + PrivDir = ?config(priv_dir, Config), + Prog1 = + <<"-module(bad_behaviour). + -callback bad() -> bad. + -export([publicly_bad/0]). + + %% @doc This function is here just to avoid the 'unused' warning for bad/0 + publicly_bad() -> bad(). + + %% @doc This function overlaps with the callback with the same name, and + %% that was an issue for dialyzer since it's a private function. + bad() -> bad.">>, + {ok, Beam} = compile(Config, Prog1, bad_behaviour, []), + + ErlangBeam = case code:where_is_file("erlang.beam") of + non_existing -> + filename:join([code:root_dir(), + "erts", "preloaded", "ebin", + "erlang.beam"]); + EBeam -> + EBeam + end, + Plt = filename:join(PrivDir, "plt_bad_behaviour.plt"), + Opts = [{check_plt, true}, {from, byte_code}], + [] = dialyzer:run([{analysis_type, plt_build}, + {files, [Beam, ErlangBeam]}, + {output_plt, Plt}] ++ Opts), + + Prog2 = + <<"-module(bad_child). + -behaviour(bad_behaviour). + + -export([bad/0]). + + %% @doc This function incorreclty implements bad_behaviour. + bad() -> not_bad.">>, + {ok, TestBeam} = compile(Config, Prog2, bad_child, []), + + [{warn_behaviour, _, + {callback_type_mismatch, + [bad_behaviour,bad,0,"'not_bad'","'bad'"]}}] = + dialyzer:run([{analysis_type, succ_typings}, + {files, [TestBeam]}, + {init_plt, Plt}] ++ Opts), + ok. + + compile(Config, Prog, Module, CompileOpts) -> Source = lists:concat([Module, ".erl"]), PrivDir = ?config(priv_dir,Config), |