diff options
Diffstat (limited to 'lib/compiler/test/receive_SUITE.erl')
| -rw-r--r-- | lib/compiler/test/receive_SUITE.erl | 165 |
1 files changed, 158 insertions, 7 deletions
diff --git a/lib/compiler/test/receive_SUITE.erl b/lib/compiler/test/receive_SUITE.erl index 8304672558..752491f0f8 100644 --- a/lib/compiler/test/receive_SUITE.erl +++ b/lib/compiler/test/receive_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2016. All Rights Reserved. +%% Copyright Ericsson AB 2004-2018. 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. @@ -25,7 +25,8 @@ init_per_group/2,end_per_group/2, init_per_testcase/2,end_per_testcase/2, export/1,recv/1,coverage/1,otp_7980/1,ref_opt/1, - wait/1]). + wait/1,recv_in_try/1,double_recv/1,receive_var_zero/1, + match_built_terms/1,elusive_common_exit/1]). -include_lib("common_test/include/ct.hrl"). @@ -40,15 +41,17 @@ suite() -> {timetrap,{minutes,2}}]. all() -> - test_lib:recompile(?MODULE), [{group,p}]. groups() -> [{p,test_lib:parallel(), - [recv,coverage,otp_7980,ref_opt,export,wait]}]. + [recv,coverage,otp_7980,ref_opt,export,wait, + recv_in_try,double_recv,receive_var_zero, + match_built_terms,elusive_common_exit]}]. init_per_suite(Config) -> + test_lib:recompile(?MODULE), Config. end_per_suite(_Config) -> @@ -222,9 +225,8 @@ do_ref_opt(Source, PrivDir) -> collect_recv_opt_instrs(Code) end, ok - catch Class:Error -> - io:format("~s: ~p ~p\n~p\n", - [Source,Class,Error,erlang:get_stacktrace()]), + catch Class:Error:Stk -> + io:format("~s: ~p ~p\n~p\n", [Source,Class,Error,Stk]), error end. @@ -265,6 +267,10 @@ export(Config) when is_list(Config) -> self() ! {result,Ref,42}, 42 = export_1(Ref), {error,timeout} = export_1(Ref), + + self() ! {result,Ref}, + {ok,Ref} = export_2(), + ok. export_1(Reference) -> @@ -281,6 +287,10 @@ export_1(Reference) -> id({build,self()}), Result. +export_2() -> + receive {result,Result} -> ok end, + {ok,Result}. + wait(Config) when is_list(Config) -> self() ! <<42>>, <<42>> = wait_1(r, 1, 2), @@ -298,4 +308,145 @@ wait_1(r, _, _) -> wait_1(A, B, C) -> {A,B,C}. +recv_in_try(_Config) -> + self() ! {ok,fh}, {ok,fh} = recv_in_try(infinity, native), + self() ! {ok,ignored}, {ok,42} = recv_in_try(infinity, plain), + self() ! {error,ignored}, nok = recv_in_try(infinity, plain), + timeout = recv_in_try(1, plain), + ok. + +recv_in_try(Timeout, Format) -> + try + receive + {Status,History} -> + %% {test,is_tuple,{f,148},[{x,0}]}. + %% {test,test_arity,{f,148},[{x,0},2]}. + %% {get_tuple_element,{x,0},0,{y,1}}. %y1 is fragile. + %% + %% %% Here the fragility of y1 would be be progated to + %% %% the 'catch' below. Incorrect, since get_tuple_element + %% %% can't fail. + %% {get_tuple_element,{x,0},1,{x,2}}. + %% + %% remove_message. %y1 fragility cleared. + FH = case Format of + native -> + id(History); + plain -> + id(42) + end, + case Status of + ok -> + {ok,FH}; + error -> + nok + end + after Timeout -> + timeout + end + catch + %% The fragility of y1 incorrectly propagated to here. + %% beam_validator would complain. + throw:{error,Reason} -> + {nok,Reason} + end. + +%% ERL-703. The compiler would crash because beam_utils:anno_defs/1 +%% failed to take into account that code after loop_rec_end is +%% unreachable. + +double_recv(_Config) -> + self() ! {more,{a,term}}, + ok = do_double_recv({more,{a,term}}, any), + self() ! message, + ok = do_double_recv(whatever, message), + + error = do_double_recv({more,42}, whatever), + error = do_double_recv(whatever, whatever), + ok. + +do_double_recv({more, Rest}, _Msg) -> + receive + {more, Rest} -> + ok + after 0 -> + error + end; +do_double_recv(_, Msg) -> + receive + Msg -> + ok + after 0 -> + error + end. + +%% Test 'after Z', when Z =:= 0 been propagated as an immediate by the type +%% optimization pass. +receive_var_zero(Config) when is_list(Config) -> + self() ! x, + self() ! y, + Z = zero(), + timeout = receive + z -> ok + after Z -> timeout + end, + timeout = receive + after Z -> timeout + end, + self() ! w, + receive + x -> ok; + Other -> + ct:fail({bad_message,Other}) + end. + +zero() -> 0. + +%% ERL-862; the validator would explode when a term was constructed in a +%% receive guard. + +-define(MATCH_BUILT_TERM(Ref, Expr), + (fun() -> + Ref = make_ref(), + A = id($a), + B = id($b), + Built = id(Expr), + self() ! {Ref, A, B}, + receive + {Ref, A, B} when Expr =:= Built -> + ok + after 5000 -> + ct:fail("Failed to match message with term built in " + "receive guard.") + end + end)()). + +match_built_terms(Config) when is_list(Config) -> + ?MATCH_BUILT_TERM(Ref, [A, B]), + ?MATCH_BUILT_TERM(Ref, {A, B}), + ?MATCH_BUILT_TERM(Ref, <<A, B>>), + ?MATCH_BUILT_TERM(Ref, #{ 1 => A, 2 => B}). + +elusive_common_exit(_Config) -> + self() ! {1, a}, + self() ! {2, b}, + {[z], [{2,b},{1,a}]} = elusive_loop([x,y,z], 2, []), + ok. + +elusive_loop(List, 0, Results) -> + {List, Results}; +elusive_loop(List, ToReceive, Results) -> + {Result, RemList} = + receive + {_Pos, _R} = Res when List =/= [] -> + [_H|T] = List, + {Res, T}; + {_Pos, _R} = Res when List =:= [] -> + {Res, []} + end, + %% beam_ssa_pre_codegen:fix_receives() would fail to find + %% the common exit block for this receive. That would mean + %% that it would not insert all necessary copy instructions. + elusive_loop(RemList, ToReceive-1, [Result | Results]). + id(I) -> I. |