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-rw-r--r--lib/debugger/test/int_eval_SUITE.erl35
-rw-r--r--lib/debugger/test/int_eval_SUITE_data/stacktrace.erl130
2 files changed, 163 insertions, 2 deletions
diff --git a/lib/debugger/test/int_eval_SUITE.erl b/lib/debugger/test/int_eval_SUITE.erl
index f36ed213d1..99af1a8a2e 100644
--- a/lib/debugger/test/int_eval_SUITE.erl
+++ b/lib/debugger/test/int_eval_SUITE.erl
@@ -28,7 +28,7 @@
bifs_outside_erlang/1, spawning/1, applying/1,
catch_and_throw/1, external_call/1, test_module_info/1,
apply_interpreted_fun/1, apply_uninterpreted_fun/1,
- interpreted_exit/1, otp_8310/1]).
+ interpreted_exit/1, otp_8310/1, stacktrace/1]).
%% Helpers.
-export([applier/3]).
@@ -44,7 +44,7 @@ all() ->
[bifs_outside_erlang, spawning, applying,
catch_and_throw, external_call, test_module_info,
apply_interpreted_fun, apply_uninterpreted_fun,
- interpreted_exit, otp_8310].
+ interpreted_exit, otp_8310, stacktrace].
groups() ->
[].
@@ -277,6 +277,37 @@ applier(M, F, A) ->
io:format("~p:~p(~p) => ~p\n", [M,F,A,Res]),
Res.
+stacktrace(Config) when is_list(Config) ->
+ ?line {done,Stk} = do_eval(Config, stacktrace),
+ ?line 13 = length(Stk),
+ ?line OldStackTraceFlag = int:stack_trace(),
+ ?line int:stack_trace(no_tail),
+ try
+ ?line Res = spawn_eval(fun() -> stacktrace:stacktrace() end),
+ ?line io:format("\nInterpreted (no_tail):\n~p", [Res]),
+ ?line {done,Stk} = Res
+ after
+ ?line int:stack_trace(OldStackTraceFlag)
+ end,
+ ok.
+
+
+do_eval(Config, Mod) ->
+ ?line DataDir = ?config(data_dir, Config),
+ ?line ok = file:set_cwd(DataDir),
+
+ ?line {ok,Mod} = compile:file(Mod, [report,debug_info]),
+ ?line {module,Mod} = code:load_file(Mod),
+ ?line CompiledRes = Mod:Mod(),
+ ?line ok = io:format("Compiled:\n~p", [CompiledRes]),
+ io:nl(),
+
+ ?line {module,Mod} = int:i(Mod),
+ ?line IntRes = Mod:Mod(),
+ ?line ok = io:format("Interpreted:\n~p", [IntRes]),
+
+ ?line CompiledRes = IntRes.
+
%%
%% Evaluate in another process, to prevent the test_case process to become
%% interpreted.
diff --git a/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl b/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl
new file mode 100644
index 0000000000..a42dfca433
--- /dev/null
+++ b/lib/debugger/test/int_eval_SUITE_data/stacktrace.erl
@@ -0,0 +1,130 @@
+-module(stacktrace).
+-export([?MODULE/0]).
+
+?MODULE() ->
+ OldDepth = erlang:system_flag(backtrace_depth, 32),
+ done = (catch do_try()),
+ Stk = trim(erlang:get_stacktrace()),
+ erlang:system_flag(backtrace_depth, OldDepth),
+ {done,Stk}.
+
+trim([{int_eval_SUITE,_,_}|_]) ->
+ [];
+trim([H|T]) ->
+ [H|trim(T)];
+trim([]) -> [].
+
+do_try() ->
+ try
+ 0 = id(42)
+ catch
+ error:{badmatch,42} ->
+ do_try2() %Tail-recursive
+ end.
+
+do_try2() ->
+ try
+ 0 = id(42)
+ catch
+ error:{badmatch,42} ->
+ do_try3() %Not tail-recursive
+ end,
+ ?LINE.
+
+do_try3() ->
+ try id(42) of
+ 42 -> do_try4() %Tail-recursive
+ catch
+ error:ignore -> %Should never catch
+ ?LINE
+ end.
+
+do_try4() ->
+ try
+ do_recv() %Not tail-recursive
+ catch
+ error:ignore -> %Should never catch
+ ?LINE
+ end.
+
+do_recv() ->
+ self() ! x,
+ receive
+ x -> do_recv2() %Not tail-recursive
+ end,
+ ?LINE.
+
+do_recv2() ->
+ self() ! y,
+ receive
+ y -> do_recv3() %Tail-recursive
+ end.
+
+do_recv3() ->
+ receive
+ after 0 -> do_recv4() %Tail-recursive
+ end.
+
+do_recv4() ->
+ receive
+ after 0 -> do_if(true) %Not tail-recursive
+ end,
+ ?LINE.
+
+do_if(Bool) ->
+ if
+ Bool -> do_if2(Bool) %Tail-recursive
+ end.
+
+do_if2(Bool) ->
+ if
+ Bool -> do_case(Bool) %Not tail-recursive
+ end,
+ ?LINE.
+
+
+do_case(Bool) ->
+ case Bool of
+ true -> do_case2(Bool) %Tail-recursive
+ end.
+
+do_case2(Bool) ->
+ case Bool of
+ true -> do_fun(Bool) %Not tail-recursive
+ end,
+ ?LINE.
+
+do_fun(Bool) ->
+ F = fun(true) ->
+ do_fun2(Bool) %Tail-recursive
+ end,
+ F(Bool). %Tail-recursive
+
+do_fun2(Bool) ->
+ F = fun(true) ->
+ cons(Bool) %Tail-recursive
+ end,
+ F(Bool), %Not tail-recursive
+ ?LINE.
+
+cons(Bool) ->
+ [Bool|tuple()].
+
+tuple() ->
+ {ok,op()}.
+
+op() ->
+ 1 + lc().
+
+lc() ->
+ [done() || true].
+
+done() ->
+ tail(100),
+ throw(done).
+
+tail(0) -> ok;
+tail(N) -> tail(N-1).
+
+id(I) ->
+ I.