diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/dialyzer/src/dialyzer_plt.erl | 20 | ||||
-rw-r--r-- | lib/kernel/test/erl_distribution_SUITE.erl | 8 | ||||
-rw-r--r-- | lib/kernel/test/inet_SUITE.erl | 8 | ||||
-rw-r--r-- | lib/observer/src/cdv_port_cb.erl | 17 | ||||
-rw-r--r-- | lib/observer/src/cdv_proc_cb.erl | 4 | ||||
-rw-r--r-- | lib/observer/src/cdv_sched_cb.erl | 18 | ||||
-rw-r--r-- | lib/observer/src/crashdump_viewer.erl | 188 | ||||
-rw-r--r-- | lib/observer/src/crashdump_viewer.hrl | 16 | ||||
-rw-r--r-- | lib/stdlib/src/beam_lib.erl | 3 | ||||
-rw-r--r-- | lib/stdlib/test/re_SUITE.erl | 15 |
10 files changed, 224 insertions, 73 deletions
diff --git a/lib/dialyzer/src/dialyzer_plt.erl b/lib/dialyzer/src/dialyzer_plt.erl index 95c8b5ebce..2af4534396 100644 --- a/lib/dialyzer/src/dialyzer_plt.erl +++ b/lib/dialyzer/src/dialyzer_plt.erl @@ -531,17 +531,19 @@ compute_md5_from_files(Files) -> lists:keysort(1, [{F, compute_md5_from_file(F)} || F <- Files]). compute_md5_from_file(File) -> - case filelib:is_regular(File) of - false -> + case beam_lib:all_chunks(File) of + {ok, _, Chunks} -> + %% We cannot use beam_lib:md5 because it does not consider + %% the debug_info chunk, where typespecs are likely stored. + %% So we consider almost all chunks except the useless ones. + Filtered = [[ID, Chunk] || {ID, Chunk} <- Chunks, ID =/= "CInf", ID =/= "Docs"], + erlang:md5(lists:sort(Filtered)); + {error, beam_lib, {file_error, _, enoent}} -> Msg = io_lib:format("Not a regular file: ~ts\n", [File]), throw({dialyzer_error, Msg}); - true -> - case dialyzer_utils:get_core_from_beam(File) of - {error, Error} -> - throw({dialyzer_error, Error}); - {ok, Core} -> - erlang:md5(term_to_binary(Core)) - end + {error, beam_lib, _} -> + Msg = io_lib:format("Could not compute MD5 for .beam: ~ts\n", [File]), + throw({dialyzer_error, Msg}) end. init_diff_list(RemoveFiles, AddFiles) -> diff --git a/lib/kernel/test/erl_distribution_SUITE.erl b/lib/kernel/test/erl_distribution_SUITE.erl index 073b391288..f6791adf86 100644 --- a/lib/kernel/test/erl_distribution_SUITE.erl +++ b/lib/kernel/test/erl_distribution_SUITE.erl @@ -95,7 +95,11 @@ init_per_group(_GroupName, Config) -> end_per_group(_GroupName, Config) -> Config. - +init_per_testcase(TC, Config) when TC == hostnames; + TC == nodenames -> + file:make_dir("hostnames_nodedir"), + file:write_file("hostnames_nodedir/ignore_core_files",""), + Config; init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) -> Config. @@ -251,7 +255,7 @@ test_node(Name, Illigal) -> end, net_kernel:monitor_nodes(true), BinCommand = unicode:characters_to_binary(Command, utf8), - Prt = open_port({spawn, BinCommand}, [stream]), + Prt = open_port({spawn, BinCommand}, [stream,{cd,"hostnames_nodedir"}]), Node = list_to_atom(Name), receive {nodeup, Node} -> diff --git a/lib/kernel/test/inet_SUITE.erl b/lib/kernel/test/inet_SUITE.erl index 3b502be8b8..ba0d075ef2 100644 --- a/lib/kernel/test/inet_SUITE.erl +++ b/lib/kernel/test/inet_SUITE.erl @@ -1083,11 +1083,9 @@ ifaddrs([{If,Opts}|IOs]) -> #ifopts{flags=F} = Ifopts = check_ifopts(Opts, #ifopts{name=If}), case F of {flags,Flags} -> - case lists:member(up, Flags) of - true -> - Ifopts#ifopts.addrs; - false -> - [] + case lists:member(running, Flags) of + true -> Ifopts#ifopts.addrs; + false -> [] end ++ ifaddrs(IOs); undefined -> ifaddrs(IOs) diff --git a/lib/observer/src/cdv_port_cb.erl b/lib/observer/src/cdv_port_cb.erl index b5cbe8132d..6bb8f07a74 100644 --- a/lib/observer/src/cdv_port_cb.erl +++ b/lib/observer/src/cdv_port_cb.erl @@ -34,7 +34,8 @@ -define(COL_CONN, ?COL_ID+1). -define(COL_NAME, ?COL_CONN+1). -define(COL_CTRL, ?COL_NAME+1). --define(COL_SLOT, ?COL_CTRL+1). +-define(COL_QUEUE, ?COL_CTRL+1). +-define(COL_SLOT, ?COL_QUEUE+1). @@ -44,6 +45,7 @@ col_to_elem(?COL_ID) -> #port.id; col_to_elem(?COL_CONN) -> #port.connected; col_to_elem(?COL_NAME) -> #port.name; col_to_elem(?COL_CTRL) -> #port.controls; +col_to_elem(?COL_QUEUE) -> #port.queue; col_to_elem(?COL_SLOT) -> #port.slot. col_spec() -> @@ -51,6 +53,7 @@ col_spec() -> {"Connected", ?wxLIST_FORMAT_LEFT, 120}, {"Name", ?wxLIST_FORMAT_LEFT, 150}, {"Controls", ?wxLIST_FORMAT_LEFT, 200}, + {"Queue", ?wxLIST_FORMAT_RIGHT, 100}, {"Slot", ?wxLIST_FORMAT_RIGHT, 50}]. get_info(_) -> @@ -96,9 +99,17 @@ format(D) -> info_fields() -> [{"Overview", [{"Name", name}, + {"State", state}, + {"Task Flags", task_flags}, {"Connected", {click,connected}}, {"Slot", slot}, - {"Controls", controls}]}, + {"Controls", controls}, + {"Input bytes", input}, + {"Output bytes", output}, + {"Queue bytes", queue}, + {"Port data", port_data}]}, {scroll_boxes, [{"Links",1,{click,links}}, - {"Monitors",1,{click,monitors}}]}]. + {"Monitors",1,{click,monitors}}, + {"Suspended",1,{click,suspended}} + ]}]. diff --git a/lib/observer/src/cdv_proc_cb.erl b/lib/observer/src/cdv_proc_cb.erl index f10650bbb7..0ea23dd7cb 100644 --- a/lib/observer/src/cdv_proc_cb.erl +++ b/lib/observer/src/cdv_proc_cb.erl @@ -149,6 +149,10 @@ info_fields() -> {"Old Heap", old_heap}, {"Heap Unused", heap_unused}, {"Old Heap Unused", old_heap_unused}, + {"Binary vheap", bin_vheap}, + {"Old Binary vheap", old_bin_vheap}, + {"Binary vheap unused", bin_vheap_unused}, + {"Old Binary vheap unused", old_bin_vheap_unused}, {"Number of Heap Fragements", num_heap_frag}, {"Heap Fragment Data",heap_frag_data}, {"New Heap Start", new_heap_start}, diff --git a/lib/observer/src/cdv_sched_cb.erl b/lib/observer/src/cdv_sched_cb.erl index 192aaf31a7..d2696a276f 100644 --- a/lib/observer/src/cdv_sched_cb.erl +++ b/lib/observer/src/cdv_sched_cb.erl @@ -31,7 +31,8 @@ %% Columns -define(COL_ID, 0). --define(COL_PROC, ?COL_ID+1). +-define(COL_TYPE, ?COL_ID+1). +-define(COL_PROC, ?COL_TYPE+1). -define(COL_PORT, ?COL_PROC+1). -define(COL_RQL, ?COL_PORT+1). -define(COL_PQL, ?COL_RQL+1). @@ -39,6 +40,7 @@ %% Callbacks for cdv_virtual_list_wx col_to_elem(id) -> col_to_elem(?COL_ID); col_to_elem(?COL_ID) -> #sched.name; +col_to_elem(?COL_TYPE) -> #sched.type; col_to_elem(?COL_PROC) -> #sched.process; col_to_elem(?COL_PORT) -> #sched.port; col_to_elem(?COL_RQL) -> #sched.run_q; @@ -46,6 +48,7 @@ col_to_elem(?COL_PQL) -> #sched.port_q. col_spec() -> [{"Id", ?wxLIST_FORMAT_RIGHT, 50}, + {"Type", ?wxLIST_FORMAT_CENTER, 100}, {"Current Process", ?wxLIST_FORMAT_CENTER, 130}, {"Current Port", ?wxLIST_FORMAT_CENTER, 130}, {"Run Queue Length", ?wxLIST_FORMAT_RIGHT, 180}, @@ -73,7 +76,8 @@ detail_pages() -> [{"Scheduler Information", fun init_gen_page/2}]. init_gen_page(Parent, Info0) -> - Fields = info_fields(), + Type = proplists:get_value(type, Info0), + Fields = info_fields(Type), Details = proplists:get_value(details, Info0), Info = if is_map(Details) -> Info0 ++ maps:to_list(Details); true -> Info0 @@ -81,15 +85,16 @@ init_gen_page(Parent, Info0) -> cdv_info_wx:start_link(Parent,{Fields,Info,[]}). %%% Internal -info_fields() -> +info_fields(Type) -> [{"Scheduler Overview", [{"Id", id}, + {"Type", type}, {"Current Process",process}, {"Current Port", port}, {"Sleep Info Flags", sleep_info}, {"Sleep Aux Work", sleep_aux} ]}, - {"Run Queues", + {run_queues_header(Type), [{"Flags", runq_flags}, {"Priority Max Length", runq_max}, {"Priority High Length", runq_high}, @@ -116,3 +121,8 @@ info_fields() -> {" ", {currp_stack, 11}} ]} ]. + +run_queues_header(normal) -> + "Run Queues"; +run_queues_header(DirtyX) -> + "Run Queues (common for all '" ++ atom_to_list(DirtyX) ++ "' schedulers)". diff --git a/lib/observer/src/crashdump_viewer.erl b/lib/observer/src/crashdump_viewer.erl index bba97624a7..d0c14db486 100644 --- a/lib/observer/src/crashdump_viewer.erl +++ b/lib/observer/src/crashdump_viewer.erl @@ -116,6 +116,10 @@ -define(allocator,allocator). -define(atoms,atoms). -define(binary,binary). +-define(dirty_cpu_scheduler,dirty_cpu_scheduler). +-define(dirty_cpu_run_queue,dirty_cpu_run_queue). +-define(dirty_io_scheduler,dirty_io_scheduler). +-define(dirty_io_run_queue,dirty_io_run_queue). -define(ende,ende). -define(erl_crash_dump,erl_crash_dump). -define(ets,ets). @@ -1222,6 +1226,18 @@ all_procinfo(Fd,Fun,Proc,WS,LineHead) -> "OldHeap unused" -> Bytes = list_to_integer(bytes(Fd))*WS, get_procinfo(Fd,Fun,Proc#proc{old_heap_unused=Bytes},WS); + "BinVHeap" -> + Bytes = list_to_integer(bytes(Fd))*WS, + get_procinfo(Fd,Fun,Proc#proc{bin_vheap=Bytes},WS); + "OldBinVHeap" -> + Bytes = list_to_integer(bytes(Fd))*WS, + get_procinfo(Fd,Fun,Proc#proc{old_bin_vheap=Bytes},WS); + "BinVHeap unused" -> + Bytes = list_to_integer(bytes(Fd))*WS, + get_procinfo(Fd,Fun,Proc#proc{bin_vheap_unused=Bytes},WS); + "OldBinVHeap unused" -> + Bytes = list_to_integer(bytes(Fd))*WS, + get_procinfo(Fd,Fun,Proc#proc{old_bin_vheap_unused=Bytes},WS); "New heap start" -> get_procinfo(Fd,Fun,Proc#proc{new_heap_start=bytes(Fd)},WS); "New heap top" -> @@ -1632,6 +1648,10 @@ port_to_tuple("#Port<"++Port) -> get_portinfo(Fd,Port) -> case line_head(Fd) of + "State" -> + get_portinfo(Fd,Port#port{state=bytes(Fd)}); + "Task Flags" -> + get_portinfo(Fd,Port#port{task_flags=bytes(Fd)}); "Slot" -> %% stored as integer so we can sort on it get_portinfo(Fd,Port#port{slot=list_to_integer(bytes(Fd))}); @@ -1656,6 +1676,10 @@ get_portinfo(Fd,Port) -> {Pid,Pid++" ("++Ref++")"} end || Mon <- Monitors0], get_portinfo(Fd,Port#port{monitors=Monitors}); + "Suspended" -> + Pids = split_pid_list_no_space(bytes(Fd)), + Suspended = [{Pid,Pid} || Pid <- Pids], + get_portinfo(Fd,Port#port{suspended=Suspended}); "Port controls linked-in driver" -> Str = lists:flatten(["Linked in driver: " | string(Fd)]), get_portinfo(Fd,Port#port{controls=Str}); @@ -1671,6 +1695,15 @@ get_portinfo(Fd,Port) -> "Port is UNIX fd not opened by emulator" -> Str = lists:flatten(["UNIX fd not opened by emulator: "| string(Fd)]), get_portinfo(Fd,Port#port{controls=Str}); + "Input" -> + get_portinfo(Fd,Port#port{input=list_to_integer(bytes(Fd))}); + "Output" -> + get_portinfo(Fd,Port#port{output=list_to_integer(bytes(Fd))}); + "Queue" -> + get_portinfo(Fd,Port#port{queue=list_to_integer(bytes(Fd))}); + "Port Data" -> + get_portinfo(Fd,Port#port{port_data=string(Fd)}); + "=" ++ _next_tag -> Port; Other -> @@ -2503,73 +2536,142 @@ get_indextableinfo1(Fd,IndexTable) -> %%----------------------------------------------------------------- %% Page with scheduler table information schedulers(File) -> - case lookup_index(?scheduler) of - [] -> - []; - Schedulers -> - Fd = open(File), - R = lists:map(fun({Name,Start}) -> - get_schedulerinfo(Fd,Name,Start) - end, - Schedulers), - close(Fd), - R - end. + Fd = open(File), -get_schedulerinfo(Fd,Name,Start) -> + Schds0 = case lookup_index(?scheduler) of + [] -> + []; + Normals -> + [{Normals, #sched{type=normal}}] + end, + Schds1 = case lookup_index(?dirty_cpu_scheduler) of + [] -> + Schds0; + DirtyCpus -> + [{DirtyCpus, get_dirty_runqueue(Fd, ?dirty_cpu_run_queue)} + | Schds0] + end, + Schds2 = case lookup_index(?dirty_io_scheduler) of + [] -> + Schds1; + DirtyIos -> + [{DirtyIos, get_dirty_runqueue(Fd, ?dirty_io_run_queue)} + | Schds1] + end, + + R = schedulers1(Fd, Schds2, []), + close(Fd), + R. + +schedulers1(_Fd, [], Acc) -> + Acc; +schedulers1(Fd, [{Scheds,Sched0} | Tail], Acc0) -> + Acc1 = lists:foldl(fun({Name,Start}, AccIn) -> + [get_schedulerinfo(Fd,Name,Start,Sched0) | AccIn] + end, + Acc0, + Scheds), + schedulers1(Fd, Tail, Acc1). + +get_schedulerinfo(Fd,Name,Start,Sched0) -> pos_bof(Fd,Start), - get_schedulerinfo1(Fd,#sched{name=Name}). + get_schedulerinfo1(Fd,Sched0#sched{name=list_to_integer(Name)}). -get_schedulerinfo1(Fd,Sched=#sched{details=Ds}) -> +sched_type(?dirty_cpu_run_queue) -> dirty_cpu; +sched_type(?dirty_io_run_queue) -> dirty_io. + +get_schedulerinfo1(Fd, Sched) -> + case get_schedulerinfo2(Fd, Sched) of + {more, Sched2} -> + get_schedulerinfo1(Fd, Sched2); + {done, Sched2} -> + Sched2 + end. + +get_schedulerinfo2(Fd, Sched=#sched{details=Ds}) -> case line_head(Fd) of "Current Process" -> - get_schedulerinfo1(Fd,Sched#sched{process=bytes(Fd, "None")}); + {more, Sched#sched{process=bytes(Fd, "None")}}; "Current Port" -> - get_schedulerinfo1(Fd,Sched#sched{port=bytes(Fd, "None")}); + {more, Sched#sched{port=bytes(Fd, "None")}}; + + "Scheduler Sleep Info Flags" -> + {more, Sched#sched{details=Ds#{sleep_info=>bytes(Fd, "None")}}}; + "Scheduler Sleep Info Aux Work" -> + {more, Sched#sched{details=Ds#{sleep_aux=>bytes(Fd, "None")}}}; + + "Current Process State" -> + {more, Sched#sched{details=Ds#{currp_state=>bytes(Fd)}}}; + "Current Process Internal State" -> + {more, Sched#sched{details=Ds#{currp_int_state=>bytes(Fd)}}}; + "Current Process Program counter" -> + {more, Sched#sched{details=Ds#{currp_prg_cnt=>string(Fd)}}}; + "Current Process CP" -> + {more, Sched#sched{details=Ds#{currp_cp=>string(Fd)}}}; + "Current Process Limited Stack Trace" -> + %% If there shall be last in scheduler information block + {done, Sched#sched{details=get_limited_stack(Fd, 0, Ds)}}; + + "=" ++ _next_tag -> + {done, Sched}; + + Other -> + case Sched#sched.type of + normal -> + get_runqueue_info2(Fd, Other, Sched); + _ -> + unexpected(Fd,Other,"dirty scheduler information"), + {done, Sched} + end + end. + +get_dirty_runqueue(Fd, Tag) -> + case lookup_index(Tag) of + [{_, Start}] -> + pos_bof(Fd,Start), + get_runqueue_info1(Fd,#sched{type=sched_type(Tag)}); + [] -> + #sched{} + end. + +get_runqueue_info1(Fd, Sched) -> + case get_runqueue_info2(Fd, line_head(Fd), Sched) of + {more, Sched2} -> + get_runqueue_info1(Fd, Sched2); + {done, Sched2} -> + Sched2 + end. + +get_runqueue_info2(Fd, LineHead, Sched=#sched{details=Ds}) -> + case LineHead of "Run Queue Max Length" -> RQMax = list_to_integer(bytes(Fd)), RQ = RQMax + Sched#sched.run_q, - get_schedulerinfo1(Fd,Sched#sched{run_q=RQ, details=Ds#{runq_max=>RQMax}}); + {more, Sched#sched{run_q=RQ, details=Ds#{runq_max=>RQMax}}}; "Run Queue High Length" -> RQHigh = list_to_integer(bytes(Fd)), RQ = RQHigh + Sched#sched.run_q, - get_schedulerinfo1(Fd,Sched#sched{run_q=RQ, details=Ds#{runq_high=>RQHigh}}); + {more, Sched#sched{run_q=RQ, details=Ds#{runq_high=>RQHigh}}}; "Run Queue Normal Length" -> RQNorm = list_to_integer(bytes(Fd)), RQ = RQNorm + Sched#sched.run_q, - get_schedulerinfo1(Fd,Sched#sched{run_q=RQ, details=Ds#{runq_norm=>RQNorm}}); + {more, Sched#sched{run_q=RQ, details=Ds#{runq_norm=>RQNorm}}}; "Run Queue Low Length" -> RQLow = list_to_integer(bytes(Fd)), RQ = RQLow + Sched#sched.run_q, - get_schedulerinfo1(Fd,Sched#sched{run_q=RQ, details=Ds#{runq_low=>RQLow}}); + {more, Sched#sched{run_q=RQ, details=Ds#{runq_low=>RQLow}}}; "Run Queue Port Length" -> RQ = list_to_integer(bytes(Fd)), - get_schedulerinfo1(Fd,Sched#sched{port_q=RQ}); - - "Scheduler Sleep Info Flags" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{sleep_info=>bytes(Fd, "None")}}); - "Scheduler Sleep Info Aux Work" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{sleep_aux=>bytes(Fd, "None")}}); + {more, Sched#sched{port_q=RQ}}; "Run Queue Flags" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{runq_flags=>bytes(Fd, "None")}}); + {more, Sched#sched{details=Ds#{runq_flags=>bytes(Fd, "None")}}}; - "Current Process State" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{currp_state=>bytes(Fd)}}); - "Current Process Internal State" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{currp_int_state=>bytes(Fd)}}); - "Current Process Program counter" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{currp_prg_cnt=>string(Fd)}}); - "Current Process CP" -> - get_schedulerinfo1(Fd,Sched#sched{details=Ds#{currp_cp=>string(Fd)}}); - "Current Process Limited Stack Trace" -> - %% If there shall be last in scheduler information block - Sched#sched{details=get_limited_stack(Fd, 0, Ds)}; "=" ++ _next_tag -> - Sched; + {done, Sched}; Other -> unexpected(Fd,Other,"scheduler information"), - Sched + {done, Sched} end. get_limited_stack(Fd, N, Ds) -> @@ -3000,6 +3102,10 @@ tag_to_atom("allocated_areas") -> ?allocated_areas; tag_to_atom("allocator") -> ?allocator; tag_to_atom("atoms") -> ?atoms; tag_to_atom("binary") -> ?binary; +tag_to_atom("dirty_cpu_scheduler") -> ?dirty_cpu_scheduler; +tag_to_atom("dirty_cpu_run_queue") -> ?dirty_cpu_run_queue; +tag_to_atom("dirty_io_scheduler") -> ?dirty_io_scheduler; +tag_to_atom("dirty_io_run_queue") -> ?dirty_io_run_queue; tag_to_atom("end") -> ?ende; tag_to_atom("erl_crash_dump") -> ?erl_crash_dump; tag_to_atom("ets") -> ?ets; diff --git a/lib/observer/src/crashdump_viewer.hrl b/lib/observer/src/crashdump_viewer.hrl index 6a93a089fd..252e19379d 100644 --- a/lib/observer/src/crashdump_viewer.hrl +++ b/lib/observer/src/crashdump_viewer.hrl @@ -80,6 +80,10 @@ old_heap, heap_unused, old_heap_unused, + bin_vheap, + old_bin_vheap, + bin_vheap_unused, + old_bin_vheap_unused, new_heap_start, new_heap_top, stack_top, @@ -95,19 +99,27 @@ -record(port, {id, + state, + task_flags=0, slot, connected, links, name, monitors, - controls}). + suspended, + controls, + input, + output, + queue, + port_data}). -record(sched, {name, + type, process, port, run_q=0, - port_q=0, + port_q, details=#{} }). diff --git a/lib/stdlib/src/beam_lib.erl b/lib/stdlib/src/beam_lib.erl index 06c15fceda..24349c74e8 100644 --- a/lib/stdlib/src/beam_lib.erl +++ b/lib/stdlib/src/beam_lib.erl @@ -148,7 +148,8 @@ chunks(File, Chunks, Options) -> try read_chunk_data(File, Chunks, Options) catch Error -> Error end. --spec all_chunks(beam()) -> {'ok', 'beam_lib', [{chunkid(), dataB()}]}. +-spec all_chunks(beam()) -> + {'ok', 'beam_lib', [{chunkid(), dataB()}]} | {'error', 'beam_lib', info_rsn()}. all_chunks(File) -> read_all_chunks(File). diff --git a/lib/stdlib/test/re_SUITE.erl b/lib/stdlib/test/re_SUITE.erl index 71f86e32e5..7b82647416 100644 --- a/lib/stdlib/test/re_SUITE.erl +++ b/lib/stdlib/test/re_SUITE.erl @@ -894,10 +894,13 @@ match_limit(Config) when is_list(Config) -> %% Test that we get sub-binaries if subject is a binary and we capture %% binaries. sub_binaries(Config) when is_list(Config) -> - Bin = list_to_binary(lists:seq(1,255)), - {match,[B,C]}=re:run(Bin,"(a)",[{capture,all,binary}]), - 255 = binary:referenced_byte_size(B), - 255 = binary:referenced_byte_size(C), - {match,[D]}=re:run(Bin,"(a)",[{capture,[1],binary}]), - 255 = binary:referenced_byte_size(D), + %% The GC can auto-convert tiny sub-binaries to heap binaries, so we + %% extract large sequences to make the test more stable. + Bin = << <<I>> || I <- lists:seq(1, 4096) >>, + {match,[B,C]}=re:run(Bin,"a(.+)$",[{capture,all,binary}]), + true = byte_size(B) =/= byte_size(C), + 4096 = binary:referenced_byte_size(B), + 4096 = binary:referenced_byte_size(C), + {match,[D]}=re:run(Bin,"a(.+)$",[{capture,[1],binary}]), + 4096 = binary:referenced_byte_size(D), ok. |