Merge branch 'sverker/valgrind-fixes/OTP-14609' into maint

* sverker/valgrind-fixes/OTP-14609:
  erts: Suppress false memory leak for dlerror
  [ct] Cleanup and rename purify related functions as valgrind
  Revert "remove unused purify functions"
  erts: Fix memory leak when sending to terminating port
  erts: Fix harmless use of uninitialised value

3 files changed, 52 insertions, 11 deletions

diff --git a/lib/common_test/src/test_server.erl b/lib/common_test/src/test_server.erl
index ee3a5e4bba..dc6b7a536c 100644
--- a/lib/common_test/src/test_server.erl
+++ b/lib/common_test/src/test_server.erl
@@ -21,7 +21,7 @@
 -define(DEFAULT_TIMETRAP_SECS, 60).
 
 %%% TEST_SERVER_CTRL INTERFACE %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--export([run_test_case_apply/1,init_target_info/0]).
+-export([run_test_case_apply/1,init_target_info/0,init_valgrind/0]).
 -export([cover_compile/1,cover_analyse/2]).
 
 %%% TEST_SERVER_SUP INTERFACE %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -49,6 +49,10 @@
 
 -export([break/1,break/2,break/3,continue/0,continue/1]).
 
+%%% DEBUGGER INTERFACE %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-export([valgrind_new_leaks/0, valgrind_format/2,
+	 is_valgrind/0]).
+
 %%% PRIVATE EXPORTED %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 -export([]).
 
@@ -69,6 +73,10 @@ init_target_info() ->
 		 username=test_server_sup:get_username(),
 		 cookie=atom_to_list(erlang:get_cookie())}.
 
+init_valgrind() ->
+    valgrind_new_leaks().
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% cover_compile(#cover{app=App,incl=Include,excl=Exclude,cross=Cross}) ->
 %%        {ok,#cover{mods=AnalyseModules}} | {error,Reason}
@@ -358,11 +366,12 @@ stick_all_sticky(Node,Sticky) ->
 %% compensate timetraps for runtime delays introduced by e.g. tools like
 %% cover.
 
-run_test_case_apply({Mod,Func,Args,Name,RunInit,TimetrapData}) ->
+run_test_case_apply({CaseNum,Mod,Func,Args,Name,RunInit,TimetrapData}) ->
     case is_valgrind() of
 	false ->
 	    ok;
 	true ->
+            valgrind_format("Test case #~w ~w:~w/1", [CaseNum, Mod, Func]),
 	    os:putenv("VALGRIND_LOGFILE_INFIX",atom_to_list(Mod)++"."++
 		      atom_to_list(Func)++"-")
     end,
@@ -370,6 +379,7 @@ run_test_case_apply({Mod,Func,Args,Name,RunInit,TimetrapData}) ->
     Result = run_test_case_apply(Mod, Func, Args, Name, RunInit,
 				 TimetrapData),
     ProcAft = erlang:system_info(process_count),
+    valgrind_new_leaks(),
     DetFail = get(test_server_detected_fail),
     {Result,DetFail,ProcBef,ProcAft}.
 
@@ -2735,11 +2745,36 @@ is_commercial() ->
 %%
 %% Returns true if valgrind is running, else false
 is_valgrind() ->
-    case os:getenv("TS_RUN_VALGRIND") of
-	false -> false;
-	_ -> true
+    case catch erlang:system_info({valgrind, running}) of
+	{'EXIT', _} -> false;
+	Res -> Res
     end.
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%                     DEBUGGER INTERFACE                    %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% valgrind_new_leaks() -> ok
+%%
+%% Checks for new memory leaks if Valgrind is active.
+valgrind_new_leaks() ->
+    catch erlang:system_info({valgrind, memory}),
+    ok.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% valgrind_format(Format, Args) -> ok
+%% Format = string()
+%% Args = lists()
+%%
+%% Outputs the formatted string to Valgrind's logfile,if Valgrind is active.
+valgrind_format(Format, Args) ->
+    (catch erlang:system_info({valgrind, io_lib:format(Format, Args)})),
+    ok.
+
+
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%
 %% Apply given function and reply to caller or proxy.
diff --git a/lib/common_test/src/test_server_ctrl.erl b/lib/common_test/src/test_server_ctrl.erl
index 9412c43187..71978c7267 100644
--- a/lib/common_test/src/test_server_ctrl.erl
+++ b/lib/common_test/src/test_server_ctrl.erl
@@ -2163,6 +2163,7 @@ do_add_end_per_suite_and_skip(LastMod, LastRef, Mod, FwMod) ->
 %% Runs the specified tests, then displays/logs the summary.
 
 run_test_cases(TestSpec, Config, TimetrapData) ->
+    test_server:init_valgrind(),
     case lists:member(no_src, get(test_server_logopts)) of
 	true ->
 	    ok;
@@ -3796,7 +3797,7 @@ run_test_case1(Ref, Num, Mod, Func, Args, RunInit,
 
     %% run the test case
     {Result,DetectedFail,ProcsBefore,ProcsAfter} =
-	run_test_case_apply(Mod, Func, [UpdatedArgs], GrName,
+	run_test_case_apply(Num, Mod, Func, [UpdatedArgs], GrName,
 			    RunInit, TimetrapData),
     {Time,RetVal,Loc,Opts,Comment} =
 	case Result of
@@ -4366,7 +4367,7 @@ do_format_exception(Reason={Error,Stack}) ->
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% run_test_case_apply(Mod, Func, Args, Name, RunInit,
+%% run_test_case_apply(CaseNum, Mod, Func, Args, Name, RunInit,
 %%                     TimetrapData) ->
 %%  {{Time,RetVal,Loc,Opts,Comment},DetectedFail,ProcessesBefore,ProcessesAfter} |
 %%  {{died,Reason,unknown,Comment},DetectedFail,ProcessesBefore,ProcessesAfter}
@@ -4380,9 +4381,9 @@ do_format_exception(Reason={Error,Stack}) ->
 %% ProcessesBefore = ProcessesAfter = integer()
 %%
 
-run_test_case_apply(Mod, Func, Args, Name, RunInit,
+run_test_case_apply(CaseNum, Mod, Func, Args, Name, RunInit,
 		    TimetrapData) ->
-    test_server:run_test_case_apply({Mod,Func,Args,Name,RunInit,
+    test_server:run_test_case_apply({CaseNum,Mod,Func,Args,Name,RunInit,
 				     TimetrapData}).
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/lib/stdlib/test/id_transform_SUITE.erl b/lib/stdlib/test/id_transform_SUITE.erl
index 3d4ae1a189..186df41d3f 100644
--- a/lib/stdlib/test/id_transform_SUITE.erl
+++ b/lib/stdlib/test/id_transform_SUITE.erl
@@ -61,8 +61,13 @@ id_transform(Config) when is_list(Config) ->
 			"erl_id_trans.erl"]),
     {ok,erl_id_trans,Bin} = compile:file(File,[binary]),
     {module,erl_id_trans} = code:load_binary(erl_id_trans, File, Bin),
-    ct:timetrap({hours,1}),
-    run_in_test_suite().
+    case test_server:is_valgrind() of
+	false ->
+	    ct:timetrap({hours,1}),
+	    run_in_test_suite();
+	true ->
+	    {skip,"Valgrind (too slow)"}
+    end.
 
 run_in_test_suite() ->
     SuperDir = filename:dirname(filename:dirname(code:which(?MODULE))),