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authorLukas Larsson <[email protected]>2017-10-06 18:09:22 +0200
committerLukas Larsson <[email protected]>2017-10-09 11:51:28 +0200
commit01ee7763bcaf9192bedba2833f8b0717df1c4b23 (patch)
treeaa144d5030d8be5c3850db1cc9ff964aac465a16 /erts/emulator/test
parentb4b81a3342af35308e87e34380d870c2464be697 (diff)
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erts: Fix caller trace for apply bifs
Bifs that are called through the export entry using i_call_last could have their cp set to return_trace, just like any other call. So we have to unwind the trace stack to get the correct cp. Not doing this creates a lot of issues for fprof.
Diffstat (limited to 'erts/emulator/test')
-rw-r--r--erts/emulator/test/match_spec_SUITE.erl48
1 files changed, 46 insertions, 2 deletions
diff --git a/erts/emulator/test/match_spec_SUITE.erl b/erts/emulator/test/match_spec_SUITE.erl
index 92ddc23592..08a7b4560c 100644
--- a/erts/emulator/test/match_spec_SUITE.erl
+++ b/erts/emulator/test/match_spec_SUITE.erl
@@ -21,7 +21,7 @@
-module(match_spec_SUITE).
-export([all/0, suite/0, not_run/1]).
--export([test_1/1, test_2/1, test_3/1, bad_match_spec_bin/1,
+-export([test_1/1, test_2/1, test_3/1, caller_and_return_to/1, bad_match_spec_bin/1,
trace_control_word/1, silent/1, silent_no_ms/1, silent_test/1,
ms_trace2/1, ms_trace3/1, ms_trace_dead/1, boxed_and_small/1,
destructive_in_test_bif/1, guard_exceptions/1,
@@ -47,7 +47,7 @@ suite() ->
all() ->
case test_server:is_native(match_spec_SUITE) of
false ->
- [test_1, test_2, test_3, bad_match_spec_bin,
+ [test_1, test_2, test_3, caller_and_return_to, bad_match_spec_bin,
trace_control_word, silent, silent_no_ms, silent_test, ms_trace2,
ms_trace3, ms_trace_dead, boxed_and_small, destructive_in_test_bif,
guard_exceptions, unary_plus, unary_minus, fpe,
@@ -180,6 +180,50 @@ test_3(Config) when is_list(Config) ->
collect(P1, [{trace, P1, call, {?MODULE, f2, [a, b]}, [true]}]),
ok.
+%% Test that caller and return to work as they should
+%% There was a bug where caller would be undefined when return_to was set
+%% for r the bif erlang:put().
+caller_and_return_to(Config) ->
+ tr(
+ fun do_put_wrapper/0,
+ fun (Tracee) ->
+ MsgCaller = [{'_',[],[{message,{caller}}]}],
+ 1 = erlang:trace(Tracee, true, [call,return_to]),
+ 1 = erlang:trace_pattern( {?MODULE,do_put,1}, MsgCaller, [local]),
+ 1 = erlang:trace_pattern( {?MODULE,do_the_put,1}, MsgCaller, [local]),
+ 1 = erlang:trace_pattern( {erlang,integer_to_list,1}, MsgCaller, [local]),
+ 1 = erlang:trace_pattern( {erlang,put,2}, MsgCaller, [local]),
+
+ [{trace,Tracee,call,{?MODULE,do_put,[test]},{?MODULE,do_put_wrapper,0}},
+ {trace,Tracee,call,{?MODULE,do_the_put,[test]},{?MODULE,do_put,1}},
+ {trace,Tracee,call,{erlang,integer_to_list,[1]},{?MODULE,do_the_put,1}},
+ {trace,Tracee,return_to,{?MODULE,do_the_put,1}},
+ {trace,Tracee,call,{erlang,put,[test,"1"]},{?MODULE,do_put,1}},
+ {trace,Tracee,return_to,{?MODULE,do_put,1}},
+
+ %% These last trace messages are a bit strange...
+ %% if call tracing had been enabled for do_put_wrapper
+ %% then caller and return_to would have been {?MODULE,do_put_wrapper,1}
+ %% but since it is not, they are set to do_put instead, but we still
+ %% get the do_put_wrapper return_to message...
+ {trace,Tracee,call,{erlang,integer_to_list,[2]},{?MODULE,do_put,1}},
+ {trace,Tracee,return_to,{?MODULE,do_put,1}},
+ {trace,Tracee,return_to,{?MODULE,do_put_wrapper,0}}
+ ]
+ end),
+ ok.
+
+do_put_wrapper() ->
+ do_put(test),
+ ok.
+
+do_put(Var) ->
+ do_the_put(Var),
+ erlang:integer_to_list(id(2)).
+do_the_put(Var) ->
+ Lst = erlang:integer_to_list(id(1)),
+ erlang:put(Var, Lst).
+
otp_9422(Config) when is_list(Config) ->
Laps = 10000,
Fun1 = fun() -> otp_9422_tracee() end,