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-rw-r--r--lib/kernel/doc/src/notes.xml18
-rw-r--r--lib/kernel/src/kernel.appup.src8
-rw-r--r--lib/kernel/src/user.erl3
-rw-r--r--lib/kernel/src/user_drv.erl37
-rw-r--r--lib/kernel/vsn.mk2
5 files changed, 43 insertions, 25 deletions
diff --git a/lib/kernel/doc/src/notes.xml b/lib/kernel/doc/src/notes.xml
index 6f68a67174..b065cc2cd8 100644
--- a/lib/kernel/doc/src/notes.xml
+++ b/lib/kernel/doc/src/notes.xml
@@ -31,6 +31,24 @@
</header>
<p>This document describes the changes made to the Kernel application.</p>
+<section><title>Kernel 6.4.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p><c>user</c>/<c>user_drv</c> could respond to io
+ requests before they had been processed, which could
+ cause data to be dropped if the emulator was halted soon
+ after a call to <c>io:format/2</c>, such as in an
+ escript.</p>
+ <p>
+ Own Id: OTP-15805</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Kernel 6.4</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/kernel/src/kernel.appup.src b/lib/kernel/src/kernel.appup.src
index cd0397a98c..95853a7a8f 100644
--- a/lib/kernel/src/kernel.appup.src
+++ b/lib/kernel/src/kernel.appup.src
@@ -38,7 +38,9 @@
{<<"^6\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
{<<"^6\\.3$">>,[restart_new_emulator]},
{<<"^6\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
- {<<"^6\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}],
+ {<<"^6\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+ {<<"^6\\.4$">>,[restart_new_emulator]},
+ {<<"^6\\.4\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}],
[{<<"^6\\.0$">>,[restart_new_emulator]},
{<<"^6\\.0\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
{<<"^6\\.0\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
@@ -50,4 +52,6 @@
{<<"^6\\.2\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
{<<"^6\\.3$">>,[restart_new_emulator]},
{<<"^6\\.3\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]},
- {<<"^6\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]}]}.
+ {<<"^6\\.3\\.1(?:\\.[0-9]+)*$">>,[restart_new_emulator]},
+ {<<"^6\\.4$">>,[restart_new_emulator]},
+ {<<"^6\\.4\\.0(?:\\.[0-9]+)+$">>,[restart_new_emulator]}]}.
diff --git a/lib/kernel/src/user.erl b/lib/kernel/src/user.erl
index 0c9e1ea303..5a3487a9ba 100644
--- a/lib/kernel/src/user.erl
+++ b/lib/kernel/src/user.erl
@@ -296,7 +296,8 @@ io_requests([], Stat, _) ->
%% port.
put_port(List, Port) ->
- send_port(Port, {command, List}).
+ true = port_command(Port, List),
+ ok.
%% send_port(Port, Command)
diff --git a/lib/kernel/src/user_drv.erl b/lib/kernel/src/user_drv.erl
index 69ff8e7971..644aa752b6 100644
--- a/lib/kernel/src/user_drv.erl
+++ b/lib/kernel/src/user_drv.erl
@@ -543,19 +543,14 @@ set_unicode_state(Iport, Bool) ->
%% io_request(Request, InPort, OutPort)
%% io_requests(Requests, InPort, OutPort)
%% Note: InPort is unused.
-
-io_request(Request, Iport, Oport) ->
- try io_command(Request) of
- {command,_} = Command ->
- Oport ! {self(),Command},
- ok;
- {Command,Reply} ->
- Oport ! {self(),Command},
- Reply
- catch
- {requests,Rs} ->
- io_requests(Rs, Iport, Oport);
- _ ->
+io_request({requests,Rs}, Iport, Oport) ->
+ io_requests(Rs, Iport, Oport);
+io_request(Request, _Iport, Oport) ->
+ case io_command(Request) of
+ {Data, Reply} ->
+ true = port_command(Oport, Data),
+ Reply;
+ unhandled ->
ok
end.
@@ -575,19 +570,19 @@ put_int16(N, Tail) ->
%% to the console before the vm stops when calling erlang:halt(integer()).
-dialyzer({no_improper_lists, io_command/1}).
io_command({put_chars_sync, unicode,Cs,Reply}) ->
- {{command,[?OP_PUTC_SYNC|unicode:characters_to_binary(Cs,utf8)]},Reply};
+ {[?OP_PUTC_SYNC|unicode:characters_to_binary(Cs,utf8)], Reply};
io_command({put_chars, unicode,Cs}) ->
- {command,[?OP_PUTC|unicode:characters_to_binary(Cs,utf8)]};
+ {[?OP_PUTC|unicode:characters_to_binary(Cs,utf8)], ok};
io_command({move_rel,N}) ->
- {command,[?OP_MOVE|put_int16(N, [])]};
+ {[?OP_MOVE|put_int16(N, [])], ok};
io_command({insert_chars,unicode,Cs}) ->
- {command,[?OP_INSC|unicode:characters_to_binary(Cs,utf8)]};
+ {[?OP_INSC|unicode:characters_to_binary(Cs,utf8)], ok};
io_command({delete_chars,N}) ->
- {command,[?OP_DELC|put_int16(N, [])]};
+ {[?OP_DELC|put_int16(N, [])], ok};
io_command(beep) ->
- {command,[?OP_BEEP]};
-io_command(Else) ->
- throw(Else).
+ {[?OP_BEEP], ok};
+io_command(_) ->
+ unhandled.
%% gr_new()
%% gr_get_num(Group, Index)
diff --git a/lib/kernel/vsn.mk b/lib/kernel/vsn.mk
index 765e890157..e5188aa9b5 100644
--- a/lib/kernel/vsn.mk
+++ b/lib/kernel/vsn.mk
@@ -1 +1 @@
-KERNEL_VSN = 6.4
+KERNEL_VSN = 6.4.1