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-rw-r--r--lib/compiler/src/beam_bsm.erl13
-rw-r--r--lib/compiler/src/sys_core_bsm.erl62
-rw-r--r--lib/compiler/test/bs_match_SUITE.erl38
-rw-r--r--lib/eldap/src/eldap.erl15
-rw-r--r--lib/kernel/test/file_SUITE.erl31
-rw-r--r--lib/kernel/test/gen_tcp_misc_SUITE.erl4
-rw-r--r--lib/kernel/test/prim_file_SUITE.erl3
7 files changed, 142 insertions, 24 deletions
diff --git a/lib/compiler/src/beam_bsm.erl b/lib/compiler/src/beam_bsm.erl
index abc6e96c85..1c8e0e9854 100644
--- a/lib/compiler/src/beam_bsm.erl
+++ b/lib/compiler/src/beam_bsm.erl
@@ -310,18 +310,7 @@ btb_reaches_match_2([{test,bs_start_match2,{f,F},Live,[Bin,_],Ctx}|Is],
end;
btb_reaches_match_2([{test,_,{f,F},Ss}=I|Is], Regs, D0) ->
btb_ensure_not_used(Ss, I, Regs),
- D1 = btb_follow_branch(F, Regs, D0),
- D = case Is of
- [{bs_context_to_binary,_}|_] ->
- %% bs_context_to_binary following a test instruction
- %% probably needs the current position to be saved as
- %% the new start position, but we can't be sure.
- %% Therefore, conservatively disable the optimization
- %% (instead of forcing a saving of the position).
- D1#btb{must_save=true,must_not_save=true};
- _ ->
- D1
- end,
+ D = btb_follow_branch(F, Regs, D0),
btb_reaches_match_1(Is, Regs, D);
btb_reaches_match_2([{test,_,{f,F},_,Ss,_}=I|Is], Regs, D0) ->
btb_ensure_not_used(Ss, I, Regs),
diff --git a/lib/compiler/src/sys_core_bsm.erl b/lib/compiler/src/sys_core_bsm.erl
index d7b26c3a56..62657933ee 100644
--- a/lib/compiler/src/sys_core_bsm.erl
+++ b/lib/compiler/src/sys_core_bsm.erl
@@ -44,6 +44,14 @@ function([{#c_var{name={F,Arity}}=Name,B0}|Fs], FsAcc, Ws0) ->
{B,Ws} ->
function(Fs, [{Name,B}|FsAcc], Ws)
catch
+ throw:unsafe_bs_context_to_binary ->
+ %% Unsafe bs_context_to_binary (in the sense that the
+ %% contents of the binary will probably be wrong).
+ %% Disable binary optimizations for the entire function.
+ %% We don't generate an INFO message, because this happens
+ %% very infrequently and it would be hard to explain in
+ %% a comprehensible way in an INFO message.
+ function(Fs, [{Name,B0}|FsAcc], Ws0);
Class:Error:Stack ->
io:fwrite("Function: ~w/~w\n", [F,Arity]),
erlang:raise(Class, Error, Stack)
@@ -116,12 +124,66 @@ move_from_col(Pos, L) ->
[Col|First] ++ Rest.
bsm_do_an([#c_var{name=Vname}=V0|Vs0], Cs0, Case) ->
+ bsm_inner_context_to_binary(Cs0),
Cs = bsm_do_an_var(Vname, Cs0),
V = bsm_annotate_for_reuse(V0),
Vs = core_lib:make_values([V|Vs0]),
Case#c_case{arg=Vs,clauses=Cs};
bsm_do_an(_Vs, _Cs, Case) -> Case.
+bsm_inner_context_to_binary([#c_clause{body=B}|Cs]) ->
+ %% Consider:
+ %%
+ %% foo(<<Length, Data/binary>>) -> %Line 1
+ %% case {Data, Length} of %Line 2
+ %% {_, 0} -> Data; %Line 3
+ %% {<<...>>, 4} -> ... %Line 4
+ %% end.
+ %%
+ %% No sub binary will be created for Data in line 1. The match
+ %% context will be passed on to the `case` in line 2. In line 3,
+ %% this pass inserts a `bs_context_to_binary` instruction to
+ %% convert the match context representing Data to a binary before
+ %% returning it. The problem is that the binary created will be
+ %% the original binary (including the matched out Length field),
+ %% not the tail of the binary as it is supposed to be.
+ %%
+ %% Here follows a heuristic to disable the binary optimizations
+ %% for the entire function if this code kind of code is found.
+
+ case cerl_trees:free_variables(B) of
+ [] ->
+ %% Since there are no free variables in the body of
+ %% this clause, there can't be any troublesome
+ %% bs_context_to_binary instructions.
+ bsm_inner_context_to_binary(Cs);
+ [_|_]=Free ->
+ %% One of the free variables could refer to a match context
+ %% created by the outer binary match.
+ F = fun(#c_primop{name=#c_literal{val=bs_context_to_binary},
+ args=[#c_var{name=V}]}, _) ->
+ case member(V, Free) of
+ true ->
+ %% This bs_context_to_binary instruction will
+ %% make a binary of the match context from an
+ %% outer binary match. It is very likely that
+ %% the contents of the binary will be wrong
+ %% (the original binary as opposed to only
+ %% the tail binary).
+ throw(unsafe_bs_context_to_binary);
+ false ->
+ %% Safe. This bs_context_to_binary instruction
+ %% will make a binary from a match context
+ %% defined in the body of the clause.
+ ok
+ end;
+ (_, _) ->
+ ok
+ end,
+ cerl_trees:fold(F, ok, B)
+ end;
+bsm_inner_context_to_binary([]) -> ok.
+
bsm_do_an_var(V, [#c_clause{pats=[P|_],guard=G,body=B0}=C0|Cs]) ->
case P of
#c_var{name=VarName} ->
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index 7814738449..e97dbac8a6 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -1690,30 +1690,62 @@ non_opt_eq([], <<>>) ->
%% ERL-689
-erl_689(Config) ->
+erl_689(_Config) ->
{{0, 0, 0}, <<>>} = do_erl_689_1(<<0>>, ?MODULE),
{{2018, 8, 7}, <<>>} = do_erl_689_1(<<4,2018:16/little,8,7>>, ?MODULE),
{{0, 0, 0}, <<>>} = do_erl_689_2(?MODULE, <<0>>),
{{2018, 8, 7}, <<>>} = do_erl_689_2(?MODULE, <<4,2018:16/little,8,7>>),
ok.
-do_erl_689_1(<<Length, Data/binary>>, _) ->
+do_erl_689_1(Arg1, Arg2) ->
+ Res = do_erl_689_1a(Arg1, Arg2),
+ Res = do_erl_689_1b(Arg1, Arg2).
+
+do_erl_689_2(Arg1, Arg2) ->
+ Res = do_erl_689_2a(Arg1, Arg2),
+ Res = do_erl_689_2b(Arg1, Arg2).
+
+do_erl_689_1a(<<Length, Data/binary>>, _) ->
+ case {Data, Length} of
+ {_, 0} ->
+ %% bs_context_to_binary would incorrectly set Data to the original
+ %% binary (before matching in the function head).
+ {{0, 0, 0}, Data};
+ {<<Y:16/little, M, D, Rest/binary>>, 4} ->
+ {{Y, M, D}, Rest}
+ end.
+
+do_erl_689_1b(<<Length, Data/binary>>, _) ->
case {Data, Length} of
{_, 0} ->
%% bs_context_to_binary would incorrectly set Data to the original
%% binary (before matching in the function head).
+ id(0),
{{0, 0, 0}, Data};
{<<Y:16/little, M, D, Rest/binary>>, 4} ->
+ id(1),
+ {{Y, M, D}, Rest}
+ end.
+
+do_erl_689_2a(_, <<Length, Data/binary>>) ->
+ case {Length, Data} of
+ {0, _} ->
+ %% bs_context_to_binary would incorrectly set Data to the original
+ %% binary (before matching in the function head).
+ {{0, 0, 0}, Data};
+ {4, <<Y:16/little, M, D, Rest/binary>>} ->
{{Y, M, D}, Rest}
end.
-do_erl_689_2(_, <<Length, Data/binary>>) ->
+do_erl_689_2b(_, <<Length, Data/binary>>) ->
case {Length, Data} of
{0, _} ->
%% bs_context_to_binary would incorrectly set Data to the original
%% binary (before matching in the function head).
+ id(0),
{{0, 0, 0}, Data};
{4, <<Y:16/little, M, D, Rest/binary>>} ->
+ id(1),
{{Y, M, D}, Rest}
end.
diff --git a/lib/eldap/src/eldap.erl b/lib/eldap/src/eldap.erl
index 2b84872b92..6497922852 100644
--- a/lib/eldap/src/eldap.erl
+++ b/lib/eldap/src/eldap.erl
@@ -957,10 +957,19 @@ do_modify_dn_0(Data, Entry, NewRDN, DelOldRDN, NewSup, Controls) ->
do_unbind(Data) ->
Req = "",
log2(Data, "unbind request = ~p (has no reply)~n", [Req]),
- send_request(Data#eldap.fd, Data, Data#eldap.id, {unbindRequest, Req}),
case Data#eldap.using_tls of
- true -> ssl:close(Data#eldap.fd);
- false -> gen_tcp:close(Data#eldap.fd)
+ true ->
+ send_request(Data#eldap.fd, Data, Data#eldap.id, {unbindRequest, Req}),
+ ssl:close(Data#eldap.fd);
+ false ->
+ OldTrapExit = process_flag(trap_exit, true),
+ catch send_request(Data#eldap.fd, Data, Data#eldap.id, {unbindRequest, Req}),
+ catch gen_tcp:close(Data#eldap.fd),
+ receive
+ {'EXIT', _From, _Reason} -> ok
+ after 0 -> ok
+ end,
+ process_flag(trap_exit, OldTrapExit)
end,
{no_reply, Data#eldap{binddn = (#eldap{})#eldap.binddn,
passwd = (#eldap{})#eldap.passwd,
diff --git a/lib/kernel/test/file_SUITE.erl b/lib/kernel/test/file_SUITE.erl
index e784c06865..a51025cba6 100644
--- a/lib/kernel/test/file_SUITE.erl
+++ b/lib/kernel/test/file_SUITE.erl
@@ -100,7 +100,7 @@
-export([unicode_mode/1]).
--export([volume_relative_paths/1]).
+-export([volume_relative_paths/1,unc_paths/1]).
-export([tiny_writes/1, tiny_writes_delayed/1,
large_writes/1, large_writes_delayed/1,
@@ -129,7 +129,7 @@ suite() ->
all() ->
[unicode, altname, read_write_file, {group, dirs},
- {group, files}, delete, rename, names, volume_relative_paths,
+ {group, files}, delete, rename, names, volume_relative_paths, unc_paths,
{group, errors}, {group, compression}, {group, links}, copy,
delayed_write, read_ahead, segment_read, segment_write,
ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
@@ -2182,6 +2182,30 @@ volume_relative_paths(Config) when is_list(Config) ->
{skip, "This test is Windows-specific."}
end.
+unc_paths(Config) when is_list(Config) ->
+ case os:type() of
+ {win32, _} ->
+ %% We assume administrative shares are set up and reachable, and we
+ %% settle for testing presence as some of the returned data is
+ %% different.
+ {ok, _} = file:read_file_info("C:\\Windows\\explorer.exe"),
+ {ok, _} = file:read_file_info("\\\\localhost\\c$\\Windows\\explorer.exe"),
+
+ {ok, Cwd} = file:get_cwd(),
+
+ try
+ ok = file:set_cwd("\\\\localhost\\c$\\Windows\\"),
+ {ok, _} = file:read_file_info("explorer.exe")
+ after
+ file:set_cwd(Cwd)
+ end,
+
+ [] = flush(),
+ ok;
+ _ ->
+ {skip, "This test is Windows-specific."}
+ end.
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -2210,7 +2234,8 @@ e_delete(Config) when is_list(Config) ->
case os:type() of
{win32, _} ->
%% Remove a character device.
- {error, eacces} = ?FILE_MODULE:delete("nul");
+ expect({error, eacces}, {error, einval},
+ ?FILE_MODULE:delete("nul"));
_ ->
?FILE_MODULE:write_file_info(
Base, #file_info {mode=0}),
diff --git a/lib/kernel/test/gen_tcp_misc_SUITE.erl b/lib/kernel/test/gen_tcp_misc_SUITE.erl
index 358ca872f7..194522c009 100644
--- a/lib/kernel/test/gen_tcp_misc_SUITE.erl
+++ b/lib/kernel/test/gen_tcp_misc_SUITE.erl
@@ -1981,8 +1981,8 @@ recvtclass(_Config) ->
%% pktoptions is not supported for IPv4
recvtos_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
recvtos_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
-recvtos_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
%% Using the option returns einval, so it is not implemented.
+recvtos_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
recvtos_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
%% Does not return any value - not implemented for pktoptions
recvtos_ok({unix,linux}, OSVer) -> not semver_lt(OSVer, {3,1,0});
@@ -1993,8 +1993,8 @@ recvtos_ok(_, _) -> false.
%% pktoptions is not supported for IPv4
recvttl_ok({unix,openbsd}, OSVer) -> not semver_lt(OSVer, {6,4,0});
recvttl_ok({unix,darwin}, OSVer) -> not semver_lt(OSVer, {17,6,0});
-recvttl_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
%% Using the option returns einval, so it is not implemented.
+recvttl_ok({unix,freebsd}, OSVer) -> not semver_lt(OSVer, {11,2,0});
recvttl_ok({unix,sunos}, OSVer) -> not semver_lt(OSVer, {5,12,0});
%%
recvttl_ok({unix,linux}, _) -> true;
diff --git a/lib/kernel/test/prim_file_SUITE.erl b/lib/kernel/test/prim_file_SUITE.erl
index a02b5f87d1..2f465a15bc 100644
--- a/lib/kernel/test/prim_file_SUITE.erl
+++ b/lib/kernel/test/prim_file_SUITE.erl
@@ -1300,7 +1300,8 @@ e_delete(Config) when is_list(Config) ->
case os:type() of
{win32, _} ->
%% Remove a character device.
- {error, eacces} = ?PRIM_FILE:delete("nul");
+ expect({error, eacces}, {error, einval},
+ ?PRIM_FILE:delete("nul"));
_ ->
?PRIM_FILE:write_file_info(
Base, #file_info {mode=0}),
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 20:49:53 +0000