Erlang/OTP 22 is a new major release with new features and improvements as well as incompatibilities.
For a deeper dive into the hightligts of the OTP 22 release, you can read our blog here:
http://blog.erlang.org/OTP-22-Highlights/
Potential Incompatibilities
gen_* behaviours: If logging of the last N messages through sys:log/2,3 is active for the server, this log is included in the terminate report.
reltool: A new element, Opts, can now be included in a rel tuple in the reltool release specific configuration format: {rel, Name, Vsn, RelApps, Opts}.
All external pids/ports/refs created by erlang:list_to_pid and similar functions now compare equal to any other pid/port/ref with same number from that node.
The old legacy erl_interface library is deprecated as of OTP 22, and will be removed in OTP 23. This does not apply to the ei library.
VxWorks is deprecated as of OTP 22 and will be removed in OTP 23.
Erts:
Support for Erlang Distribution protocol to split the payload of large signals into several fragments.
ETS option write_concurrency now also effects and improves scalability of ordered_set tables.
The length/1 BIF used to calculate the length of the list in one go without yielding, even if the list was very long. Now it yields when called with long lists.
A new (still experimental) module socket is introduced. It is implemented as a NIF and the idea is that it shall be as "close as possible" to the OS level socket interface.
Added the NIF function enif_term_type, which helps avoid long sequences of enif_is_xyz by returning the type of the given term. This is especially helpful for NIFs that serialize terms, such as JSON encoders, where it can improve both performance and readability.
Compiler:
The compiler has been rewritten to internally use an intermediate representation based on Static Single Assignment (SSA). The new intermediate representation makes more optimizations possible.
The binary matching optimizations are now applicable in many more circumstances than before.
Type optimizations are now applied across local function calls, and will remove a lot more redundant type tests than before.
All compiler options that can be given in the source file can now be given in the option list on the command line for erlc.
In OTP 22, HiPE (the native code compiler) is not fully functional. The reasons for this are new BEAM instructions for binary matching that the HiPE native code compiler does not support. If erlc is invoked with the +native option, and if any of the new binary matching instructions are used, the compiler will issue a warning and produce a BEAM file without native code.
Standard libraries:
Cover now uses the counters module instead of ets for updating counters. The new function cover:local_only/0 allows running Cover in a restricted but faster local-only mode. The increase in speed will vary depending on the type of code being cover-compiled, as an example the compiler test suite runs more than twice as fast with the new Cover.
A simple socket API is provided through the socket module. This is a low level API that does *not* replace gen_[tcp|udp|sctp]. It is intended to *eventually* replace the inet driver. It also provides a basic API that facilitates the implementation of other protocols than TCP, UDP and SCTP. Known issues are; No support for the Windows OS (currently), a small term leakage. This feature will be classed as experimental in OTP 22.
SSL: now uses the new logger API, including log levels and verbose debug logging.
SSL: Basic support for TLS 1.3 Server for experimental use.
crypto: The new hash_info/1 and cipher_info/1 functions returns maps with information about the hash or cipher in the argument.
Highlights from erlang 21.2 to 21.3:
Kernel:
The standard logger handler, logger_std_h, now has a new internal
feature for log rotation. For full information see the documentation.
SSL:
The Reason part of the error return from the functions connect and
handshake has a better and documented format. This is a potential
incompatibility. See the documentation.
Refactoring of state handling has improved the TLS application data
throughput and reduced CPU overhead
Code optimizations has reduced CPU load for encryption/decryption,
especially for Erlang's distribution protocol over TLS
Now supports active N
Erl_interface:
Support for plugin of a user supplied socket implementation has been added.
OTP:
The HTML reference documentation now shows the OTP version where
modules and functions were first introduced. Versions of OTP older than R13B04 is not shown in the reference
documentation
Changes:
---------------------------------------------------------------------
--- erts-10.2.4 -----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-14728 Application(s): erts
Related Id(s): ERIERL-303
When using the {linger,{true,T}} option;
gen_tcp:listen/2 used the full linger time before
returning for example eaddrinuse. This bug has now been
corrected.
---------------------------------------------------------------------
--- stdlib-3.7.1 ----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15573 Application(s): stdlib
Related Id(s): ERIERL-306
Optimize pretty printing of terms. The slower behaviour
was introduced in Erlang/OTP 20.
Changes:
---------------------------------------------------------------------
--- inets-7.0.5 -----------------------------------------------------
---------------------------------------------------------------------
The inets-7.0.5 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15554 Application(s): inets
Related Id(s): ERIERL-289
Fixed bug that causes a crash in http client when using
hostnames (e.g. localhost) with the the option
ipv6_host_with_brackets set to true.
This change also fixes a regression: httpc:request
fails with connection error (nxdomain) if option
ipv6_host_with_brackets set to true and host component
of the URI is an IPv6 address.
Full runtime dependencies of inets-7.0.5: erts-6.0, kernel-3.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
Changes:
---------------------------------------------------------------------
--- erts-10.2.3 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.2.3 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependencies have to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
-- sasl-3.3 (first satisfied in OTP 21.2)
--- Fixed Bugs and Malfunctions ---
OTP-15536 Application(s): erts
Related Id(s): ERL-827
Fix bug where doing a gen_tcp:send on a socket with
delay_send set to true could cause a segfault if the
other side closes the connection.
Bug was introduced in erts-10.2 (OTP-21.2).
OTP-15537 Application(s): erts
Fix a race condition when a port program closes that
could result in the next started port to hang during
startup.
When this fault happens the following error is normally
(but not always) logged:
=ERROR REPORT==== 14-Jan-2019::10:45:52.868246 ===
Bad input fd in erts_poll()! fd=11, port=#Port<0.505>,
driver=spawn, name=/bin/sh -s unix:cmd
Bug was introduced in erts-10.0 (OTP-21.0).
OTP-15538 Application(s): erts
Related Id(s): ERIERL-229
Fix a bug where polling for external events could be
delayed for a very long time if all active schedulers
were 100% loaded.
Bug was introduced in erts-10.2 (OTP-21.2).
Full runtime dependencies of erts-10.2.3: kernel-6.1, sasl-3.3,
stdlib-3.5
---------------------------------------------------------------------
--- inets-7.0.4 -----------------------------------------------------
---------------------------------------------------------------------
The inets-7.0.4 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15544 Application(s): inets
Related Id(s): ERIERL-289
Make sure ipv6 addresses with brackets in URIs are
converted correctly before passing to lower level
functions like gen_tcp and ssl functions. Could cause
connection to fail.
Full runtime dependencies of inets-7.0.4: erts-6.0, kernel-3.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- compiler-7.3.1 --------------------------------------------------
---------------------------------------------------------------------
The compiler-7.3.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15501 Application(s): compiler
Related Id(s): ERL-514, ERL-807, OTP-14808
An optimization that avoided allocation of a stack
frame for some case expressions was introduced in OTP
21. (ERL-504/OTP-14808) It turns out that in rare
circumstances, this optimization is not safe.
Therefore, this optimization has been disabled.
A similar optimization will be included in OTP 22 in a
safe way.
Full runtime dependencies of compiler-7.3.1: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
---------------------------------------------------------------------
--- erts-10.2.2 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.2.2 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependencies have to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
-- sasl-3.3 (first satisfied in OTP 21.2)
--- Fixed Bugs and Malfunctions ---
OTP-15495 Application(s): erts
Related Id(s): ERL-821
Fixed a crash when dangling files were closed after
init:restart/0.
OTP-15509 Application(s): erts
Related Id(s): PR-2027, PR-2093
A bug that could cause dirty schedulers to become
unresponsive has been fixed.
Full runtime dependencies of erts-10.2.2: kernel-6.1, sasl-3.3,
stdlib-3.5
---------------------------------------------------------------------
--- ssl-9.1.2 -------------------------------------------------------
---------------------------------------------------------------------
The ssl-9.1.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15477 Application(s): ssl
Related Id(s): ERL-790
Fix encoding of the SRP extension length field in ssl.
The old encoding of the SRP extension length could
cause interoperability problems with third party SSL
implementations when SRP was used.
OTP-15504 Application(s): ssl
Related Id(s): ERL-371
Guarantee active once data delivery, handling TCP
stream properly.
OTP-15505 Application(s): ssl
Correct gen_statem returns for some error cases
Full runtime dependencies of ssl-9.1.2: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.5, stdlib-3.5
---------------------------------------------------------------------
--- xmerl-1.3.19 ----------------------------------------------------
---------------------------------------------------------------------
The xmerl-1.3.19 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15492 Application(s): xmerl
Related Id(s): ERIERL-283
The charset detection parsing crash in some cases when
the XML directive is not syntactic correct.
Full runtime dependencies of xmerl-1.3.19: erts-6.0, kernel-3.0,
stdlib-2.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- erts-10.2.1 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.2.1 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependencies have to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
-- sasl-3.3 (first satisfied in OTP 21.2)
--- Fixed Bugs and Malfunctions ---
OTP-15485 Application(s): erts
Fixed bug on big endian architectures when changing
file permissions or ownership with file:change_mode,
change_owner, change_group or write_file_info. Bug
exists since OTP-21.0.
OTP-15486 Application(s): erts
Related Id(s): PR-2061
Fixed bug in atomics with option {signed,false} when
returned values are (1 bsl 63) or larger. Could cause
heap corruption leading to VM crash or other unpleasant
symptoms. Bug exists since OTP-21.2 when module atomics
was introduced.
OTP-15487 Application(s): erts
Related Id(s): ERL-804
Fixed bug in operator band of two negative operands
causing erroneous result if the absolute value of one
of the operands have the lowest N*W bits as zero and
the other absolute value is not larger than N*W bits. N
is an integer of 1 or larger and W is 32 or 64
depending on word size.
Full runtime dependencies of erts-10.2.1: kernel-6.1, sasl-3.3,
stdlib-3.5
---------------------------------------------------------------------
--- ssl-9.1.1 -------------------------------------------------------
---------------------------------------------------------------------
The ssl-9.1.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15489 Application(s): ssl
Related Id(s): ERL-308
Fixed renegotiation bug. Client did not handle server
initiated renegotiation correctly after rewrite to two
connection processes, due to ERL-622 commit
d87ac1c55188f5ba5cdf72384125d94d42118c18. This could
manifest it self as a " bad_record_mac" alert.
Also included are some optimizations
Full runtime dependencies of ssl-9.1.1: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.5, stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- ssh-4.7.3 -------------------------------------------------------
---------------------------------------------------------------------
The ssh-4.7.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15397 Application(s): ssh
Related Id(s): ERL-801
Fixed port leakage if a ssh:daemon call failed.
Full runtime dependencies of ssh-4.7.3: crypto-4.2, erts-6.0,
kernel-3.0, public_key-1.5.2, stdlib-3.3
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- HIGHLIGHTS ------------------------------------------------------
---------------------------------------------------------------------
OTP-13468 Application(s): erts, sasl
New counters and atomics modules supplies access to
highly efficient operations on mutable fixed word sized
variables.
OTP-14669 Application(s): erts
Related Id(s): PR-1989
There is a new module persistent_term that implements a
term storage suitable for terms that are frequently
used but never or infrequently updated. Lookups are
done in constant time without copying the terms.
OTP-15094 Application(s): ssh
Related Id(s): OTP-15419
Added public key methods ssh-ed25519 and ssh-ed448.
Requires OpenSSL 1.1.1 or higher as cryptolib under the
OTP application crypto.
OTP-15449 Application(s): ssl
*** POTENTIAL INCOMPATIBILITY ***
ssl now uses active n internally to boost performance.
Old active once behavior can be restored by setting
application variable see manual page for ssl
application (man 6).
OTP-15475 Application(s): erts
Related Id(s): ERIERL-229
Add a new pollset that is made to handle sockets that
use {active, true} or {active, N}. The new pollset will
not be polled by a pollthread, but instead polled by a
normal scheduler.
This change was made because of the overhead associated
with constantly having to re-apply the ONESHOT
mechanism on fds that all input events were
interesting.
The new pollset is only active on platforms that
support concurrent kernel poll updates, i.e. Linux and
BSD.
---------------------------------------------------------------------
--- POTENTIAL INCOMPATIBILITIES -------------------------------------
---------------------------------------------------------------------
OTP-15364 Application(s): kernel
A new function, logger:update_handler_config/3 is
added, and the handler callback changing_config now has
a new argument, SetOrUpdate, which indicates if the
configuration change comes from set_handler_config/2,3
or update_handler_config/2,3.
This allows the handler to consistently merge the new
configuration with the old (if the change comes from
update_handler_config/2,3) or with the default (if the
change comes from set_handler_config/2,3).
The built-in handlers logger_std_h and
logger_disk_log_h are updated accordingly. A bug which
could cause inconsistency between the handlers'
internal state and the stored configuration is also
corrected.
OTP-15449 Application(s): ssl
*** HIGHLIGHT ***
ssl now uses active n internally to boost performance.
Old active once behavior can be restored by setting
application variable see manual page for ssl
application (man 6).
---------------------------------------------------------------------
--- asn1-5.0.8 ------------------------------------------------------
---------------------------------------------------------------------
The asn1-5.0.8 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15470 Application(s): asn1
Related Id(s): ERIERL-278
Handle erroneous length during decode (BER only)
without crashing.
Full runtime dependencies of asn1-5.0.8: erts-7.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- compiler-7.3 ----------------------------------------------------
---------------------------------------------------------------------
The compiler-7.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15400 Application(s): compiler
Related Id(s): ERL-759
Fixed a rare internal consistency failure caused by a
bug in the beam_jump pass. (Thanks to Simon Cornish for
reporting this bug.)
OTP-15435 Application(s): compiler
Related Id(s): ERL-778
The compiler could fail with an internal consistency
check failure when compiling code that used the
is_function/2 BIF.
OTP-15437 Application(s): compiler, stdlib
Related Id(s): ERL-762
When an external fun was used, warnings for unused
variables could be suppressed.
OTP-15481 Application(s): compiler
The compiler would crash when compiling an after block
that called erlang:raise/3 like this:
erlang:raise(Class, Stacktrace, Stacktrace)
--- Improvements and New Features ---
OTP-15245 Application(s): compiler, stdlib
Related Id(s): ERL-706
When specified, the +{source,Name} option will now
override the actual file name in stack traces, instead
of only affecting the return value of
Mod:module_info().
The +deterministic flag will also affect stack traces
now, omitting all path information except the file
name, fixing a long-standing issue where deterministic
builds required deterministic paths.
Full runtime dependencies of compiler-7.3: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
---------------------------------------------------------------------
--- crypto-4.4 ------------------------------------------------------
---------------------------------------------------------------------
The crypto-4.4 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15302 Application(s): crypto
Updated the RSA options part in the crypto
application's C-code, documentation and tests.
--- Improvements and New Features ---
OTP-15419 Application(s): crypto, public_key
Related Id(s): OTP-15094
Added ed25519 and ed448 sign/verify.
Requires OpenSSL 1.1.1 or higher as cryptolib under the
OTP application crypto.
OTP-15467 Application(s): crypto
Fixed valgrind warnings.
Full runtime dependencies of crypto-4.4: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- erts-10.2 -------------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.2 application can *not* be applied independently of
other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependencies have to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
-- sasl-3.3 (first satisfied in OTP 21.2)
--- Fixed Bugs and Malfunctions ---
OTP-12242 Application(s): erts
Related Id(s): ERL-561
When a process was waiting for a TCP socket send
operation to complete, and another process closed the
socket during that send, the sending process could
hang. This bug has now been corrected.
OTP-15343 Application(s): erts, stdlib
Related Id(s): PR-1962
Document bit_size in match specifications and allow it
in ets:fun2ms.
OTP-15346 Application(s): erts
Fixed bug in ets:select_replace when called with a
fully bound key could cause a following call to
ets:next or ets:prev to crash the emulator or return
invalid result.
OTP-15360 Application(s): erts
When a module has been purged from memory, any literals
belonging to that module will be copied to all
processes that hold references to them. The max heap
size limit would be ignored in the garbage collection
initiated when copying literals to a process. If the
max heap size was exceeded, the process would typically
be terminated in the following garbage collection.
Corrected to terminate the process directly if copying
a literal would exceed the max heap size.
OTP-15389 Application(s): erts
Fix compilation of run_erl on Solaris 11.4 and later.
OTP-15436 Application(s): erts
Fixed a bug where lists:reverse/1-2 could use far too
many reductions. This bug was introduced in OTP 21.1.
OTP-15446 Application(s): erts
Related Id(s): PR-2024
Fixed a bug where a dirty scheduler could stay awake
forever if a distribution entry was removed as part of
a dirty GC.
OTP-15450 Application(s): erts
Related Id(s): ERIERL-229
Fix microstate accounting handing in various places.
Most importantly the GC states when the GC is run on a
dirty scheduler are now managed correctly.
OTP-15461 Application(s): erts
Related Id(s): ERL-784
Fixed bug in file:sendfile when the send operation
failed. For sockets in active modes it could cause
emulator crash or a hanging call. For sockets with
{active,false} an unexpected {inet_reply, _, _} message
could be sent to the calling process. The bug exists
since OTP-21.0.
OTP-15465 Application(s): erts
The erts configure script has been updated to reject
any CFLAGS that does not have -O. This in order to
prevent the common mistake of forgetting to add -O2 to
custom CFLAGS.
OTP-15474 Application(s): erts, stdlib
Related Id(s): ERIERL-229
Fix reduction count in lists:member/2
--- Improvements and New Features ---
OTP-13468 Application(s): erts, sasl
*** HIGHLIGHT ***
New counters and atomics modules supplies access to
highly efficient operations on mutable fixed word sized
variables.
OTP-14669 Application(s): erts
Related Id(s): PR-1989
*** HIGHLIGHT ***
There is a new module persistent_term that implements a
term storage suitable for terms that are frequently
used but never or infrequently updated. Lookups are
done in constant time without copying the terms.
OTP-15121 Application(s): erts, kernel
Related Id(s): ERIERL-189, PR-1974
A function inet:getifaddrs/1 that takes a list with a
namespace option has been added, for platforms that
support that feature, for example Linux (only?).
OTP-15357 Application(s): erts, kernel
Related Id(s): ERL-698
Added the nopush option for TCP sockets, which
corresponds to TCP_NOPUSH on *BSD and TCP_CORK on
Linux.
This is also used internally in file:sendfile to reduce
latency on subsequent send operations.
OTP-15371 Application(s): erts, stdlib
List subtraction (The -- operator) will now yield
properly on large inputs.
OTP-15471 Application(s): erts, kernel
Related Id(s): ERIERL-229
Optimize handling of send_delay for tcp sockes to
better work with the new pollthread implementation
introduced in OTP-21.
OTP-15472 Application(s): erts
Related Id(s): ERIERL-229
Optimize driver_set_timer with a zero timeout to
short-circuit and not create any timer structure, but
instead schedule the timer immediately.
OTP-15473 Application(s): erts
Related Id(s): ERIERL-229
Add erl_xcomp_code_model_small as a cross configure
variable in order to let the emulator be build with the
assumption that a small code model will be used on the
target machine.
OTP-15475 Application(s): erts
Related Id(s): ERIERL-229
*** HIGHLIGHT ***
Add a new pollset that is made to handle sockets that
use {active, true} or {active, N}. The new pollset will
not be polled by a pollthread, but instead polled by a
normal scheduler.
This change was made because of the overhead associated
with constantly having to re-apply the ONESHOT
mechanism on fds that all input events were
interesting.
The new pollset is only active on platforms that
support concurrent kernel poll updates, i.e. Linux and
BSD.
OTP-15478 Application(s): erts
Related Id(s): ERL-741
Fix bug where emulator would segfault if a literal
message was sent when sequence tracing was enabled.
Full runtime dependencies of erts-10.2: kernel-6.1, sasl-3.3,
stdlib-3.5
---------------------------------------------------------------------
--- et-1.6.4 --------------------------------------------------------
---------------------------------------------------------------------
The et-1.6.4 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15463 Application(s): et
Related Id(s): ERL-780
The scroll bar of the et_viewer window could not be
dragged all the way to the top of the window. It would
always stop at the second event. This is now corrected.
Full runtime dependencies of et-1.6.4: erts-9.0, kernel-5.3,
runtime_tools-1.10, stdlib-3.4, wx-1.2
---------------------------------------------------------------------
--- hipe-3.18.2 -----------------------------------------------------
---------------------------------------------------------------------
The hipe-3.18.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15482 Application(s): hipe
The code was updated to avoid causing a dialyzer
warning because of a tightened spec for
beam_lib:info/1.
Full runtime dependencies of hipe-3.18.2: compiler-5.0, erts-9.3,
kernel-5.3, stdlib-3.4, syntax_tools-1.6.14
---------------------------------------------------------------------
--- inets-7.0.3 -----------------------------------------------------
---------------------------------------------------------------------
The inets-7.0.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15338 Application(s): inets
Related Id(s): ERL-733
Fixed http client to not send 'content-length' header
in chunked encoded requests.
OTP-15339 Application(s): inets
Related Id(s): ERL-736
Fixed http client to not drop explicit 'Content-Type'
header in requests without a body such as requests with
the 'Content-Type' of
application/x-www-form-urlencoded.
Full runtime dependencies of inets-7.0.3: erts-6.0, kernel-3.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5
---------------------------------------------------------------------
--- kernel-6.2 ------------------------------------------------------
---------------------------------------------------------------------
Note! The kernel-6.2 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- erts-10.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-15364 Application(s): kernel
*** POTENTIAL INCOMPATIBILITY ***
A new function, logger:update_handler_config/3 is
added, and the handler callback changing_config now has
a new argument, SetOrUpdate, which indicates if the
configuration change comes from set_handler_config/2,3
or update_handler_config/2,3.
This allows the handler to consistently merge the new
configuration with the old (if the change comes from
update_handler_config/2,3) or with the default (if the
change comes from set_handler_config/2,3).
The built-in handlers logger_std_h and
logger_disk_log_h are updated accordingly. A bug which
could cause inconsistency between the handlers'
internal state and the stored configuration is also
corrected.
OTP-15388 Application(s): kernel
Related Id(s): PR-1983
Fix fallback when custom erl_epmd client does not
implement address_please.
OTP-15453 Application(s): kernel
Related Id(s): ERL-782
The logger ets table did not have the read_concurrency
option. This is now added.
OTP-15466 Application(s): kernel
Related Id(s): ERL-788
During system start, logger has a simple handler which
prints to stdout. After the kernel supervision is
started, this handler is removed and replaced by the
default handler. Due to a bug, logger earlier issued a
debug printout saying it received an unexpected
message, which was the EXIT message from the simple
handler's process. This is now corrected. The simple
handler's process now unlinks from the logger process
before terminating.
OTP-15469 Application(s): kernel
The logger handler logger_std_h would not re-create
it's log file if it was removed. Due to this it could
not be used with tools like 'logrotate'. This is now
corrected.
--- Improvements and New Features ---
OTP-15121 Application(s): erts, kernel
Related Id(s): ERIERL-189, PR-1974
A function inet:getifaddrs/1 that takes a list with a
namespace option has been added, for platforms that
support that feature, for example Linux (only?).
OTP-15357 Application(s): erts, kernel
Related Id(s): ERL-698
Added the nopush option for TCP sockets, which
corresponds to TCP_NOPUSH on *BSD and TCP_CORK on
Linux.
This is also used internally in file:sendfile to reduce
latency on subsequent send operations.
OTP-15471 Application(s): erts, kernel
Related Id(s): ERIERL-229
Optimize handling of send_delay for tcp sockes to
better work with the new pollthread implementation
introduced in OTP-21.
Full runtime dependencies of kernel-6.2: erts-10.1, sasl-3.0,
stdlib-3.5
---------------------------------------------------------------------
--- observer-2.8.2 --------------------------------------------------
---------------------------------------------------------------------
The observer-2.8.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15365 Application(s): observer
Related Id(s): ERL-722
Literals such as #{"one"=>1} dumped to a crash dump
would cause crashdump_viewer to crash.
OTP-15377 Application(s): observer
crashdump_viewer would sometimes crash when processing
a dump which was truncated in the literals area. This
is now corrected.
OTP-15391 Application(s): observer
Since OTP-20.2, crashdump_viewer was very slow when
opening a crash dump with many processes. An ets:select
per process could be removed, which improved the
performance a lot.
A bug when parsing heap data in a crashdump caused
crashdump_viewer to crash when multiple Yc lines
referenced the same reference counted binary. This is
now corrected.
Full runtime dependencies of observer-2.8.2: erts-7.0, et-1.5,
kernel-3.0, runtime_tools-1.8.14, stdlib-3.5, wx-1.2
---------------------------------------------------------------------
--- os_mon-2.4.7 ----------------------------------------------------
---------------------------------------------------------------------
The os_mon-2.4.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15387 Application(s): os_mon
Related Id(s): PR-1966
Due to /proc restrictions in newer Android releases
enforced by SELinux, cpu_sup is fixed so that it gets
some basic CPU stats using the sysinfo syscall rather
than reading /proc/loadavg.
Full runtime dependencies of os_mon-2.4.7: erts-6.0, kernel-3.0,
mnesia-4.12, otp_mibs-1.0.9, sasl-2.4, snmp-4.25.1, stdlib-2.0
---------------------------------------------------------------------
--- public_key-1.6.4 ------------------------------------------------
---------------------------------------------------------------------
The public_key-1.6.4 application can be applied independently of
other applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15419 Application(s): crypto, public_key
Related Id(s): OTP-15094
Added ed25519 and ed448 sign/verify.
Requires OpenSSL 1.1.1 or higher as cryptolib under the
OTP application crypto.
Full runtime dependencies of public_key-1.6.4: asn1-3.0, crypto-3.8,
erts-6.0, kernel-3.0, stdlib-3.5
---------------------------------------------------------------------
--- reltool-0.7.8 ---------------------------------------------------
---------------------------------------------------------------------
The reltool-0.7.8 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15454 Application(s): reltool
Reltool would earlier erroneously split paths like
"c:\foo" into ["c","\foo"] when reading the $ERL_LIBS
variable on windows. This is now corrected.
Full runtime dependencies of reltool-0.7.8: erts-7.0, kernel-3.0,
sasl-2.4, stdlib-3.4, tools-2.6.14, wx-1.2
---------------------------------------------------------------------
--- sasl-3.3 --------------------------------------------------------
---------------------------------------------------------------------
Note! The sasl-3.3 application can *not* be applied independently of
other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- erts-10.2 (first satisfied in OTP 21.2)
--- Improvements and New Features ---
OTP-13468 Application(s): erts, sasl
*** HIGHLIGHT ***
New counters and atomics modules supplies access to
highly efficient operations on mutable fixed word sized
variables.
Full runtime dependencies of sasl-3.3: erts-10.2, kernel-5.3,
stdlib-3.4, tools-2.6.14
---------------------------------------------------------------------
--- ssh-4.7.2 -------------------------------------------------------
---------------------------------------------------------------------
The ssh-4.7.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15413 Application(s): ssh
Incompatibility with newer OpenSSH fixed. Previously
versions 7.8 and later could cause Erlang SSH to exit.
OTP-15416 Application(s): ssh
The 'exec' option for ssh daemons had wrong format in
the documentation.
--- Improvements and New Features ---
OTP-15094 Application(s): ssh
Related Id(s): OTP-15419
*** HIGHLIGHT ***
Added public key methods ssh-ed25519 and ssh-ed448.
Requires OpenSSL 1.1.1 or higher as cryptolib under the
OTP application crypto.
OTP-15312 Application(s): ssh
The SSH property tests are now adapted to the PropEr
testing tool.
OTP-15314 Application(s): ssh
The term "user" was not documented in the SSH app. A
new chapter with terminology is added to the User's
Manual where the term "user" is defined.
A reference manual page about the module ssh_file is
also added. This is the default callback module for
user's keys, host keys etc.
OTP-15424 Application(s): ssh
Host and user key checking is made more robust.
Full runtime dependencies of ssh-4.7.2: crypto-4.2, erts-6.0,
kernel-3.0, public_key-1.5.2, stdlib-3.3
---------------------------------------------------------------------
--- ssl-9.1 ---------------------------------------------------------
---------------------------------------------------------------------
The ssl-9.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15368 Application(s): ssl
PEM cache was not evicting expired entries due to due
to timezone confusion.
OTP-15384 Application(s): ssl
Related Id(s): ERL-756
Make sure an error is returned if a "transport_accept
socket" is used in some other call than ssl:handshake*
or ssl:controlling_process
OTP-15402 Application(s): ssl
Fix timestamp handling in the PEM-cache could cause
entries to not be invalidated at the correct time.
OTP-15412 Application(s): ssl
Related Id(s): ERL-731
Extend check for undelivered data at closing, could
under some circumstances fail to deliver all data that
was actually received.
OTP-15415 Application(s): ssl
Related Id(s): ERL-763
Correct signature check for TLS-1.2 that allows
different algorithms for signature of peer cert and
peer cert key. Not all allowed combinations where
accepted.
OTP-15418 Application(s): ssl
Related Id(s): ERL-770
Correct gen_statem return value, could cause
renegotiation to fail.
--- Improvements and New Features ---
OTP-15420 Application(s): ssl
Related Id(s): ERIERL-268
Add engine support for RSA key exchange
OTP-15449 Application(s): ssl
*** HIGHLIGHT ***
*** POTENTIAL INCOMPATIBILITY ***
ssl now uses active n internally to boost performance.
Old active once behavior can be restored by setting
application variable see manual page for ssl
application (man 6).
Full runtime dependencies of ssl-9.1: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.5, stdlib-3.5
---------------------------------------------------------------------
--- stdlib-3.7 ------------------------------------------------------
---------------------------------------------------------------------
The stdlib-3.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15343 Application(s): erts, stdlib
Related Id(s): PR-1962
Document bit_size in match specifications and allow it
in ets:fun2ms.
OTP-15378 Application(s): stdlib
Related Id(s): ERL-696
The beam() type in beam_lib is defined as module() |
file:filename() | binary(). The module() is misleading.
Giving the module name as an atom will only work if the
BEAM file is in a current directory.
To avoid confusion, module() has been removed from the
type. That means that there will be a Dialyzer warning
for code that call beam_lib with an atom as filename,
but the calls will still work.
OTP-15428 Application(s): stdlib
Related Id(s): ERL-777
unicode_util crashed on certain emoji grapheme clusters
in binary strings.
OTP-15437 Application(s): compiler, stdlib
Related Id(s): ERL-762
When an external fun was used, warnings for unused
variables could be suppressed.
OTP-15474 Application(s): erts, stdlib
Related Id(s): ERIERL-229
Fix reduction count in lists:member/2
--- Improvements and New Features ---
OTP-15245 Application(s): compiler, stdlib
Related Id(s): ERL-706
When specified, the +{source,Name} option will now
override the actual file name in stack traces, instead
of only affecting the return value of
Mod:module_info().
The +deterministic flag will also affect stack traces
now, omitting all path information except the file
name, fixing a long-standing issue where deterministic
builds required deterministic paths.
OTP-15371 Application(s): erts, stdlib
List subtraction (The -- operator) will now yield
properly on large inputs.
OTP-15464 Application(s): stdlib
calendar:system_time_to_rfc3339/1,2 no longer remove
trailing zeros from fractions.
Full runtime dependencies of stdlib-3.7: compiler-5.0, crypto-3.3,
erts-10.0, kernel-6.0, sasl-3.0
---------------------------------------------------------------------
--- tools-3.0.2 -----------------------------------------------------
---------------------------------------------------------------------
The tools-3.0.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15476 Application(s): tools
Remove emacs warnings and added more tests.
Full runtime dependencies of tools-3.0.2: compiler-5.0, erts-9.1,
kernel-5.4, runtime_tools-1.8.14, stdlib-3.4
---------------------------------------------------------------------
--- wx-1.8.6 --------------------------------------------------------
---------------------------------------------------------------------
The wx-1.8.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15426 Application(s): wx
Related Id(s): ERL-755
Fixed delayed delete bug which caused wx applications
to crash on Mojave.
Full runtime dependencies of wx-1.8.6: erts-6.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
Changes:
---------------------------------------------------------------------
--- kernel-6.1.1 ----------------------------------------------------
---------------------------------------------------------------------
Note! The kernel-6.1.1 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- erts-10.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-15438 Application(s): kernel
Related Id(s): ERL-781
Fix bug causing net_kernel process crash on connection
attempt from node with name identical to local node.
Full runtime dependencies of kernel-6.1.1: erts-10.1, sasl-3.0,
stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- erts-10.1.3 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.1.3 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
--- Improvements and New Features ---
OTP-15430 Application(s): erts
Related Id(s): ERIERL-237
Added an optional ./configure flag to compile the
emulator with spectre mitigation:
--with-spectre-mitigation
Note that this requires a recent version of GCC with
support for spectre mitigation and the
--mindirect-branch=thunk flag, such as 8.1.
Full runtime dependencies of erts-10.1.3: kernel-6.1, sasl-3.0.1,
stdlib-3.5
---------------------------------------------------------------------
--- compiler-7.2.7 --------------------------------------------------
---------------------------------------------------------------------
The compiler-7.2.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15353 Application(s): compiler
Related Id(s): ERL-753
Fixed a bug where incorrect code was generated
following a binary match guard.
Full runtime dependencies of compiler-7.2.7: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
---------------------------------------------------------------------
--- erts-10.1.2 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.1.2 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-15421 Application(s): erts
Fixed a rare bug where files could be closed on a
normal instead of an IO scheduler, resulting in system
instability if the operation blocked.
Full runtime dependencies of erts-10.1.2: kernel-6.1, sasl-3.0.1,
stdlib-3.5
---------------------------------------------------------------------
--- public_key-1.6.3 ------------------------------------------------
---------------------------------------------------------------------
The public_key-1.6.3 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15367 Application(s): public_key
Add DSA SHA2 oids in public_keys ASN1-spec and
public_key:pkix_sign_types/1
Full runtime dependencies of public_key-1.6.3: asn1-3.0, crypto-3.8,
erts-6.0, kernel-3.0, stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
changes in erlang/OTP 21.1.1:
---------------------------------------------------------------------
--- compiler-7.2.6 --------------------------------------------------
---------------------------------------------------------------------
The compiler-7.2.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15335 Application(s): compiler
Related Id(s): ERL-689, OTP-15219
In rare circumstances, the matched out tail of a binary
could be the entire original binary. (There was partial
correction to this problem in version 7.2.5 of the
compiler application.)
Full runtime dependencies of compiler-7.2.6: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
---------------------------------------------------------------------
--- eldap-1.2.6 -----------------------------------------------------
---------------------------------------------------------------------
The eldap-1.2.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15342 Application(s): eldap
Related Id(s): ERIERL-242
A race condition at close could cause the eldap client
to exit with a badarg message as cause.
Full runtime dependencies of eldap-1.2.6: asn1-3.0, erts-6.0,
kernel-3.0, ssl-5.3.4, stdlib-2.0
---------------------------------------------------------------------
--- erts-10.1.1 -----------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.1.1 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-14297 Application(s): erts
Related Id(s): OTP-15141
A bug where the socket option 'pktoptions' caused a
read of uninitialized memory has been fixed. Would
cause malfunction on FreeBSD.
OTP-15318 Application(s): erts
Fixed a memory leak on errors when reading files.
OTP-15333 Application(s): erts
Related Id(s): ERL-737
File access through UNC paths works again on Windows.
This regression was introduced in OTP 21.
Full runtime dependencies of erts-10.1.1: kernel-6.1, sasl-3.0.1,
stdlib-3.5
---------------------------------------------------------------------
--- ssl-9.0.3 -------------------------------------------------------
---------------------------------------------------------------------
The ssl-9.0.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15337 Application(s): ssl
Related Id(s): ERL-738
Correct alert handling with new TLS sender process,
from ssl-9.0.2. CLOSE ALERTS could under some
circumstances be encoded using an incorrect cipher
state. This would cause the peer to regard them as
unknown messages.
OTP-15348 Application(s): ssl
Related Id(s): ERL-747
Correct handling of socket packet option with new TLS
sender process, from ssl-9.0.2. When changing the
socket option {packet, 1|2|3|4} with ssl:setopts/2 the
option must internally be propagated to the sender
process as well as the reader process as this
particular option also affects the data to be sent.
Full runtime dependencies of ssl-9.0.3: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.5, stdlib-3.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
changes in erlang/OTP 21.1:
---------------------------------------------------------------------
--- HIGHLIGHTS ------------------------------------------------------
---------------------------------------------------------------------
OTP-15133 Application(s): ssh
Related Id(s): OTP-15240
The key exchange methods
'curve25519-sha256@libssh.org', 'curve25519-sha256' and
'curve448-sha512' are implemented. The last two are
defined in
https://tools.ietf.org/html/draft-ietf-curdle-ssh-curves
They all depends on that OpenSSL 1.1.1 or higher is
used as cryptolib.
OTP-15134 Application(s): crypto, public_key
The typing in the CRYPTO and PUBLIC_KEY applications
are reworked and a few mistakes are corrected.
The documentation is now generated from the typing and
some clarifications are made.
A new chapter on Algorithm Details such as key sizes
and availability is added to the CRYPTO User's Guide.
OTP-15145 Application(s): erts, kernel
Related Id(s): ERIERL-187
The socket options recvtos, recvttl, recvtclass and
pktoptions have been implemented in the socket modules.
See the documentation for the gen_tcp, gen_udp and inet
modules. Note that support for these in the runtime
system is platform dependent. Especially for pktoptions
which is very Linux specific and obsoleted by the RFCs
that defined it.
OTP-15209 Application(s): ssh
Related Id(s): OTP-15164
The cipher 'chacha20-poly1305@openssh.com' is now
supported if OpenSSL 1.1.1 or higher is used as
cryptolib.
---------------------------------------------------------------------
--- asn1-5.0.7 ------------------------------------------------------
---------------------------------------------------------------------
The asn1-5.0.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-14440 Application(s): asn1
Related Id(s): ERIERL-220
A bug in ASN.1 BER decoding has been fixed. When
decoding a recursively enclosed term the length was not
propagated to that term decoding, so if the length of
the enclosed term was longer than the enclosing that
error was not detected.
A hard coded C stack limitation for decoding recursive
ASN.1 terms has been introduced. This is currently set
to 8 kWords giving a nesting depth of about 1000
levels. Deeper terms can not be decoded, which should
not be much of a real world limitation.
Full runtime dependencies of asn1-5.0.7: erts-7.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- common_test-1.16.1 ----------------------------------------------
---------------------------------------------------------------------
The common_test-1.16.1 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15307 Application(s): common_test
The Logger handler cth_log_redirect earlier called the
report callback (report_cb) before calling the logger
formatter. In some cases this would fail, since
cth_log_redirect could not handle report callbacks with
two arguments. This is now corrected, so only the
formatter will call the report callback.
Full runtime dependencies of common_test-1.16.1: compiler-6.0,
crypto-3.6, debugger-4.1, erts-7.0, ftp-1.0.0, inets-6.0, kernel-4.0,
observer-2.1, runtime_tools-1.8.16, sasl-2.4.2, snmp-5.1.2, ssh-4.0,
stdlib-3.5, syntax_tools-1.7, tools-2.8, xmerl-1.3.8
---------------------------------------------------------------------
--- compiler-7.2.5 --------------------------------------------------
---------------------------------------------------------------------
The compiler-7.2.5 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15186 Application(s): compiler
Related Id(s): ERL-665
Fixed a bug that prevented certain variable-sized
binary comprehensions from compiling.
OTP-15188 Application(s): compiler
Related Id(s): ERL-658
When compiling from Core Erlang, funs created in
certain expressions that were only used for their
side-effects were subtly broken.
OTP-15218 Application(s): compiler
Related Id(s): ERL-684
There could be an internal consistency failure when a
receive was nested in a try/catch.
OTP-15219 Application(s): compiler
Related Id(s): ERL-689
In rare circumstances, the matched out tail of a binary
could be the entire original binary.
OTP-15227 Application(s): compiler
Related Id(s): ERL-699
When is_map_key/2 was used in a guard together with the
not/1 or or/2 operators, the error behavior could be
wrong when is_map_key/2 was passed a non-map as the
second argument.
In rare circumstances, compiling code that uses
is_map_key/2 could cause an internal consistency check
failure.
OTP-15235 Application(s): compiler
Related Id(s): ERL-703
The compiler could crash when compiling a function with
multiple receives in multiple clauses.
Full runtime dependencies of compiler-7.2.5: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
---------------------------------------------------------------------
--- crypto-4.3.3 ----------------------------------------------------
---------------------------------------------------------------------
The crypto-4.3.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15212 Application(s): crypto
Related Id(s): ERL-675, PR1899, PR838
The RSA options rsa_mgf1_md, rsa_oaep_md, and
rsa_oaep_label were always disabled. They will now be
enabled when a suitable cryptolib is used.
They are still experimental and may change without
prior notice.
OTP-15283 Application(s): crypto
The ciphers aes_ige256 and blowfish_cbc had naming
issues in crypto:next_iv/2.
OTP-15303 Application(s): crypto
the RSA_SSLV23_PADDING is disabled if LibreSSL is used
as cryptlib. This is due to compilation problems.
This will be investigated further in the future.
--- Improvements and New Features ---
OTP-14717 Application(s): crypto
Related Id(s): OTP-15244
The supported named elliptic curves are now reported in
crypto:supports/0 in a new entry tagged by 'curves'.
The function crypto:ec_curves/0 is kept for
compatibility.
OTP-15134 Application(s): crypto, public_key
*** HIGHLIGHT ***
The typing in the CRYPTO and PUBLIC_KEY applications
are reworked and a few mistakes are corrected.
The documentation is now generated from the typing and
some clarifications are made.
A new chapter on Algorithm Details such as key sizes
and availability is added to the CRYPTO User's Guide.
OTP-15153 Application(s): crypto
Support for SHA3 both as a separate hash and in HMAC is
now available if OpenSSL 1.1.1 or higher is used as
cryptolib.
Available lengths are reported in the 'hashs' entry in
crypto:supports/0 as sha3_*.
OTP-15164 Application(s): crypto
Related Id(s): OTP-15209
The mac algorithm poly1305 and the cipher algorithm
chacha20 are now supported if OpenSSL 1.1.1 or higher
is used as cryptolib.
OTP-15240 Application(s): crypto
Related Id(s): OTP-15133
The key exchange Edward curves x25519 and x448 are now
supported if OpenSSL 1.1.1 or higher is used as
cryptolib.
OTP-15260 Application(s): crypto
The supported RSA options for sign/verify and
encrypt/decrypt are now reported in crypto:supports/0
in a new entry tagged by 'rsa_opts'.
The exakt set is still experimental and may change
without prior notice.
OTP-15286 Application(s): crypto
The cipher aes_ccm is added.
Full runtime dependencies of crypto-4.3.3: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- debugger-4.2.6 --------------------------------------------------
---------------------------------------------------------------------
The debugger-4.2.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of debugger-4.2.6: compiler-5.0, erts-9.0,
kernel-5.3, stdlib-3.4, wx-1.2
---------------------------------------------------------------------
--- dialyzer-3.3.1 --------------------------------------------------
---------------------------------------------------------------------
The dialyzer-3.3.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15268 Application(s): dialyzer
Related Id(s): ERL-680
Optimize Dialyzer's handling of left-associative use of
andalso and orelse in guards.
Full runtime dependencies of dialyzer-3.3.1: compiler-7.0, erts-9.0,
hipe-3.16.1, kernel-5.3, stdlib-3.4, syntax_tools-2.0, wx-1.2
---------------------------------------------------------------------
--- diameter-2.1.6 --------------------------------------------------
---------------------------------------------------------------------
The diameter-2.1.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15198 Application(s): diameter
Related Id(s): ERIERL-213
Fix function_clause when sending an outgoing request
after DPA has been sent in response to an incoming DPR.
The caused the diameter_peer_fsm gen_server associated
with the peer connection to fail, which could then
result in the transport connection being reset before
the peer closed it upon reception of DPA.
Full runtime dependencies of diameter-2.1.6: erts-10.0, kernel-3.2,
ssl-9.0, stdlib-2.4
---------------------------------------------------------------------
--- edoc-0.9.4 ------------------------------------------------------
---------------------------------------------------------------------
The edoc-0.9.4 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of edoc-0.9.4: erts-6.0, inets-5.10,
kernel-3.0, stdlib-2.5, syntax_tools-1.6.14, xmerl-1.3.7
---------------------------------------------------------------------
--- eldap-1.2.5 -----------------------------------------------------
---------------------------------------------------------------------
The eldap-1.2.5 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of eldap-1.2.5: asn1-3.0, erts-6.0,
kernel-3.0, ssl-5.3.4, stdlib-2.0
---------------------------------------------------------------------
--- erl_docgen-0.8.1 ------------------------------------------------
---------------------------------------------------------------------
The erl_docgen-0.8.1 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-14406 Application(s): erl_docgen
Indexing for the online search function has been
corrected for CREF documents.
Full runtime dependencies of erl_docgen-0.8.1: edoc-0.7.13, erts-9.0,
stdlib-3.4, xmerl-1.3.7
---------------------------------------------------------------------
--- erl_interface-3.10.4 --------------------------------------------
---------------------------------------------------------------------
The erl_interface-3.10.4 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15161 Application(s): erl_interface
Related Id(s): ERIERL-191
Make ei_connect and friends also accept state
ok_simultaneous during handshake, which means the other
node has initiated a connection setup that will be
cancelled in favor of this connection.
OTP-15171 Application(s): erl_interface
Fixed bug in ei_receive_msg, ei_xreceive_msg,
ei_receive_msg_tmo and ei_xreceive_msg_tmo. The
x->index was set to entire buffer size instead of the
number of bytes actually received.
OTP-15191 Application(s): erl_interface
Fixed bug in ei_connect_init which could be provoked if
called by concurrent threads. ei_connect_init called
posix interface gethostbyname which is documented as
not thread safe.
OTP-15277 Application(s): erl_interface
Related Id(s): PR-1929
Fixed bug in erl_compare_ext() ignoring the tail of
lists of otherwise equal content. Example: [a | b] and
[a | c] compared equal and {[a], b} and {[a], c}
compared equal.
---------------------------------------------------------------------
--- erts-10.1 -------------------------------------------------------
---------------------------------------------------------------------
Note! The erts-10.1 application can *not* be applied independently of
other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- kernel-6.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-15038 Application(s): erts
Related Id(s): ERL-602
Fix the seq_trace token to not be cleared when a
process receives messages sent by erts. Some examples
of when this could happen is all port BIFs, i.e.
open_port, port_command etc etc.
Fix so that messages sent by nifs can be traced using
normal and seq_trace tracing.
OTP-15180 Application(s): erts
Related Id(s): ERL-648
Fixed specs and documentation for process_info item
monitored_by to include port identifiers and nif
resources as possible types.
OTP-15181 Application(s): erts
Fix bug in generation of erl_crash.dump, which could
cause VM to crash.
Bug exist since erts-9.2 (OTP-20.2).
OTP-15205 Application(s): erts
Fix bug where ctrl-break or ctrl-c would not trigger
the break mode properly on Windows. This bug was
introduced in erts-10.0 (OTP-21).
OTP-15206 Application(s): erts
Fix a performance bug for reception of UDP packages,
where a memory buffer would be reallocated when it
should not have been.
Introduce a limit on the maximum automatic increase of
the UDP user-space buffer to the theoretical max of the
network PATH, i.e. 65535.
OTP-15208 Application(s): erts
Related Id(s): ERL-677, PR-1897
Fix alignment of erts allocator state internally in
erts. With the improper alignment the emulator would
refuse to start when compiled with clang on 32-bit
systems.
OTP-15210 Application(s): erts
Fix bug where too many concurrent calls to
erlang:open_port({spawn,"cmd"},...) would result in the
emulator terminating with the reason "Failed to write
to erl_child_setup: ". After this fix the open_port
call will throw an emfile exception instead.
OTP-15217 Application(s): erts
Upgraded the ERTS internal PCRE library from version
8.41 to version 8.42. See
http://pcre.org/original/changelog.txt for information
about changes made to PCRE. This library implements
major parts of the re regular expressions module.
OTP-15236 Application(s): erts
Related Id(s): ERL-692
Fix open_port({fd,X,Y}, ...) to release the file
descriptors from the pollset when closing the port.
Without this fix the same file descriptor number could
not be reused when doing multiple open_port and
port_close sequences.
OTP-15276 Application(s): erts
Related Id(s): PR-1920
Fixed bug in float_to_list/2 and float_to_binary/2 with
options [{decimals,0},compact] causing totally wrong
results. Bug exists since OTP-21.0.
OTP-15278 Application(s): erts
Fixed bug in erlang:memory causing ets to report too
much. This small false memory leak (16 bytes each time)
can only happen when a specific race condition occurs
between scheduler threads on a table with option
write_concurrency.
OTP-15282 Application(s): erts
Minor configure test fixes
OTP-15297 Application(s): erts, kernel
Related Id(s): OTP-15279, OTP-15280
Improved robustness of distribution connection setup.
In OTP-21.0 a truly asynchronous connection setup was
introduced. This is further improvement on that work to
make the emulator more robust and also be able to
recover in cases when involved Erlang processes
misbehave.
--- Improvements and New Features ---
OTP-15145 Application(s): erts, kernel
Related Id(s): ERIERL-187
*** HIGHLIGHT ***
The socket options recvtos, recvttl, recvtclass and
pktoptions have been implemented in the socket modules.
See the documentation for the gen_tcp, gen_udp and inet
modules. Note that support for these in the runtime
system is platform dependent. Especially for pktoptions
which is very Linux specific and obsoleted by the RFCs
that defined it.
Full runtime dependencies of erts-10.1: kernel-6.1, sasl-3.0.1,
stdlib-3.5
---------------------------------------------------------------------
--- et-1.6.3 --------------------------------------------------------
---------------------------------------------------------------------
The et-1.6.3 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of et-1.6.3: erts-9.0, kernel-5.3,
runtime_tools-1.10, stdlib-3.4, wx-1.2
---------------------------------------------------------------------
--- eunit-2.3.7 -----------------------------------------------------
---------------------------------------------------------------------
The eunit-2.3.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of eunit-2.3.7: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- ftp-1.0.1 -------------------------------------------------------
---------------------------------------------------------------------
The ftp-1.0.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of ftp-1.0.1: erts-7.0, kernel-6.0,
stdlib-3.5
---------------------------------------------------------------------
--- hipe-3.18.1 -----------------------------------------------------
---------------------------------------------------------------------
The hipe-3.18.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of hipe-3.18.1: compiler-5.0, erts-9.3,
kernel-5.3, stdlib-3.4, syntax_tools-1.6.14
---------------------------------------------------------------------
--- inets-7.0.2 -----------------------------------------------------
---------------------------------------------------------------------
The inets-7.0.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15192 Application(s): inets
Enhance error handling, that is mod_get will return 403
if a path is a directory and not a file.
OTP-15241 Application(s): inets
Do not use chunked-encoding with 1xx, 204 and 304
responses when using mod_esi. Old behavior was not
compliant with HTTP/1.1 RFC and could cause clients to
hang when they received 1xx, 204 or 304 responses that
included an empty chunked-encoded body.
OTP-15242 Application(s): inets
Add robust handling of chunked-encoded HTTP responses
with an empty body (1xx, 204, 304). Old behavior could
cause the client to hang when connecting to a faulty
server implementation.
Full runtime dependencies of inets-7.0.2: erts-6.0, kernel-3.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-5.3.4, stdlib-3.5
---------------------------------------------------------------------
--- jinterface-1.9.1 ------------------------------------------------
---------------------------------------------------------------------
The jinterface-1.9.1 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
---------------------------------------------------------------------
--- kernel-6.1 ------------------------------------------------------
---------------------------------------------------------------------
Note! The kernel-6.1 application can *not* be applied independently
of other applications on an arbitrary OTP 21 installation.
On a full OTP 21 installation, also the following runtime
dependency has to be satisfied:
-- erts-10.1 (first satisfied in OTP 21.1)
--- Fixed Bugs and Malfunctions ---
OTP-15143 Application(s): kernel
The values all and none are documented as valid value
for the Kernel configuration parameter logger_level,
but would cause a crash during node start. This is now
corrected.
OTP-15162 Application(s): kernel
Related Id(s): ERIERL-191
Fix some potential buggy behavior in how ticks are sent
on inter node distribution connections. Tick is now
sent to c-node even if there are unsent buffered data,
as c-nodes need ticks in order to send reply ticks. The
amount of sent data was also calculated wrongly when
ticks were suppressed due to unsent buffered data.
OTP-15170 Application(s): kernel
Non semantic change in dist_util.erl to silence
dialyzer warning.
OTP-15182 Application(s): kernel
Related Id(s): ERL-643
Fixed net_kernel:connect_node(node()) to return true
(and do nothing) as it always has before OTP-21.0. Also
documented this successful "self connect" as the
expected behavior.
OTP-15228 Application(s): kernel
The single_line option on logger_formatter would in
some cases add an unwanted comma after the association
arrows in a map. This is now corrected.
OTP-15297 Application(s): erts, kernel
Related Id(s): OTP-15279, OTP-15280
Improved robustness of distribution connection setup.
In OTP-21.0 a truly asynchronous connection setup was
introduced. This is further improvement on that work to
make the emulator more robust and also be able to
recover in cases when involved Erlang processes
misbehave.
--- Improvements and New Features ---
OTP-15132 Application(s): kernel
A new macro, ?LOG(Level,...), is added. This is
equivalent to the existing ?LOG_<LEVEL>(...) macros.
A new variant of Logger report callback is added, which
takes an extra argument containing options for size
limiting and line breaks. Module proc_lib in STDLIB
uses this for crash reports.
Logger configuration is now checked a bit more for
errors.
OTP-15145 Application(s): erts, kernel
Related Id(s): ERIERL-187
*** HIGHLIGHT ***
The socket options recvtos, recvttl, recvtclass and
pktoptions have been implemented in the socket modules.
See the documentation for the gen_tcp, gen_udp and inet
modules. Note that support for these in the runtime
system is platform dependent. Especially for pktoptions
which is very Linux specific and obsoleted by the RFCs
that defined it.
OTP-15146 Application(s): kernel
Add logger:set_application_level/2 for setting the
logger level of all modules in one application.
Full runtime dependencies of kernel-6.1: erts-10.1, sasl-3.0,
stdlib-3.5
---------------------------------------------------------------------
--- megaco-3.18.4 ---------------------------------------------------
---------------------------------------------------------------------
The megaco-3.18.4 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of megaco-3.18.4: asn1-3.0, debugger-4.0,
erts-7.0, et-1.5, kernel-3.0, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- mnesia-4.15.5 ---------------------------------------------------
---------------------------------------------------------------------
The mnesia-4.15.5 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15201 Application(s): mnesia
Related Id(s): PR-1881
Fixed type spec for mnesia:change_config/2.
OTP-15221 Application(s): mnesia
Related Id(s): ERIERL-217
When master node is set do not force a load from
ram_copies replica when there are no available
disc_copies, since that would load an empty table. Wait
until a disk replica is available or until user
explicitly force_loads the table.
OTP-15226 Application(s): mnesia
Related Id(s): ERIERL-221
Allow to add replicas even if all other replicas are
down when the other replicas are not stored on disk.
OTP-15231 Application(s): mnesia
Related Id(s): PR-1858
Fixed mnesia:delete_object/1 bug, where delete_object
was deleting the record if it was written in the same
transaction even if it was written to a different
value.
OTP-15243 Application(s): mnesia
Fixed a bug where the bag table index data was not
deleted when objects were deleted.
Full runtime dependencies of mnesia-4.15.5: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- observer-2.8.1 --------------------------------------------------
---------------------------------------------------------------------
The observer-2.8.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of observer-2.8.1: erts-7.0, et-1.5,
kernel-3.0, runtime_tools-1.8.14, stdlib-3.5, wx-1.2
---------------------------------------------------------------------
--- odbc-2.12.2 -----------------------------------------------------
---------------------------------------------------------------------
The odbc-2.12.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of odbc-2.12.2: erts-6.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- os_mon-2.4.6 ----------------------------------------------------
---------------------------------------------------------------------
The os_mon-2.4.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of os_mon-2.4.6: erts-6.0, kernel-3.0,
mnesia-4.12, otp_mibs-1.0.9, sasl-2.4, snmp-4.25.1, stdlib-2.0
---------------------------------------------------------------------
--- otp_mibs-1.2.1 --------------------------------------------------
---------------------------------------------------------------------
The otp_mibs-1.2.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of otp_mibs-1.2.1: erts-6.0, kernel-3.0,
mnesia-4.12, snmp-4.25.1, stdlib-2.0
---------------------------------------------------------------------
--- parsetools-2.1.8 ------------------------------------------------
---------------------------------------------------------------------
The parsetools-2.1.8 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of parsetools-2.1.8: erts-6.0, kernel-3.0,
stdlib-2.5
---------------------------------------------------------------------
--- public_key-1.6.2 ------------------------------------------------
---------------------------------------------------------------------
The public_key-1.6.2 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15284 Application(s): public_key
Removed #DSAPrivateKey{} as acceptable input to
public_key:verify/5.
--- Improvements and New Features ---
OTP-15134 Application(s): crypto, public_key
*** HIGHLIGHT ***
The typing in the CRYPTO and PUBLIC_KEY applications
are reworked and a few mistakes are corrected.
The documentation is now generated from the typing and
some clarifications are made.
A new chapter on Algorithm Details such as key sizes
and availability is added to the CRYPTO User's Guide.
Full runtime dependencies of public_key-1.6.2: asn1-3.0, crypto-3.8,
erts-6.0, kernel-3.0, stdlib-3.5
---------------------------------------------------------------------
--- reltool-0.7.7 ---------------------------------------------------
---------------------------------------------------------------------
The reltool-0.7.7 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of reltool-0.7.7: erts-7.0, kernel-3.0,
sasl-2.4, stdlib-3.4, tools-2.6.14, wx-1.2
---------------------------------------------------------------------
--- runtime_tools-1.13.1 --------------------------------------------
---------------------------------------------------------------------
The runtime_tools-1.13.1 application can be applied independently of
other applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15163 Application(s): runtime_tools
Related Id(s): PR-1844
Optimize observer by using new system_info(ets_count)
instead of more expensive length(ets:all()).
Full runtime dependencies of runtime_tools-1.13.1: erts-8.0,
kernel-5.0, mnesia-4.12, stdlib-3.0
---------------------------------------------------------------------
--- sasl-3.2.1 ------------------------------------------------------
---------------------------------------------------------------------
The sasl-3.2.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of sasl-3.2.1: erts-9.0, kernel-5.3,
stdlib-3.4, tools-2.6.14
---------------------------------------------------------------------
--- snmp-5.2.12 -----------------------------------------------------
---------------------------------------------------------------------
The snmp-5.2.12 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15287 Application(s): snmp
Related Id(s): ERIERL-206
Conversion of (agent) Audit Trail Log (ATL) failed due
to invalid log entries.
The conversion aborted completely midway because the
ATL contained invalid entries. The conversion has been
improved so that it now firstly handles encountered
errors and write an informative message (into the
converted stream) and secondly keeps count of the
number of successful or failed entry conversions. See
log_to_txt for more info.
The reason the ATL contained invalid entries have also
been fixed. The reason was that for some outgoing
messages (not response):
-- encrypted (v3 messages)
Was logged "as is" (encrypted) without the info to
decrypt, making conversion impossible (which was the
reason the log contained bad entries).
-- un-encrypted
Was not logged at all.
OTP-15290 Application(s): snmp
[compiler] Spurious version message removed. The snmp
mib compiler printed an spurious version message if the
'version' option was provided.
Full runtime dependencies of snmp-5.2.12: crypto-3.3, erts-6.0,
kernel-3.0, mnesia-4.12, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- ssh-4.7.1 -------------------------------------------------------
---------------------------------------------------------------------
The ssh-4.7.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15020 Application(s): ssh
Extended the undocumented ssh_dbg debug module with an
api for a circular trace buffer. This makes it easy to
record the last low-level events before an error is
detected. It is intended for solving difficult errors.
OTP-15133 Application(s): ssh
Related Id(s): OTP-15240
*** HIGHLIGHT ***
The key exchange methods
'curve25519-sha256@libssh.org', 'curve25519-sha256' and
'curve448-sha512' are implemented. The last two are
defined in
https://tools.ietf.org/html/draft-ietf-curdle-ssh-curves
They all depends on that OpenSSL 1.1.1 or higher is
used as cryptolib.
OTP-15209 Application(s): ssh
Related Id(s): OTP-15164
*** HIGHLIGHT ***
The cipher 'chacha20-poly1305@openssh.com' is now
supported if OpenSSL 1.1.1 or higher is used as
cryptolib.
Full runtime dependencies of ssh-4.7.1: crypto-4.2, erts-6.0,
kernel-3.0, public_key-1.5.2, stdlib-3.3
---------------------------------------------------------------------
--- ssl-9.0.2 -------------------------------------------------------
---------------------------------------------------------------------
The ssl-9.0.2 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15122 Application(s): ssl
Use separate processes for sending and receiving
application data for TLS connections to avoid potential
deadlock that was most likely to occur when using TLS
for Erlang distribution. Note does not change the API.
OTP-15168 Application(s): ssl
Correct handling of empty server SNI extension
OTP-15172 Application(s): ssl
Correct PSK cipher suite handling and add
selected_cipher_suite to connection information
OTP-15173 Application(s): ssl
Adopt to the fact that cipher suite sign restriction
are relaxed in TLS-1.2
OTP-15174 Application(s): ssl
Enhance error handling of non existing PEM files
OTP-15216 Application(s): ssl
Correct close handling of transport accepted sockets in
the error state
OTP-15224 Application(s): ssl
Correct PEM cache to not add references to empty
entries when PEM file does not exist.
OTP-15285 Application(s): ssl
Correct handling of all PSK cipher suites
Before only some PSK suites would be correctly
negotiated and most PSK ciphers suites would fail the
connection.
--- Improvements and New Features ---
OTP-12983 Application(s): ssl
TLS will now try to order certificate chains if they
appear to be unordered. That is prior to TLS 1.3,
тАЬcertificate_listтАЭ ordering was required to be strict,
however some implementations already allowed for some
flexibility. For maximum compatibility, all
implementations SHOULD be prepared to handle
potentially extraneous certificates and arbitrary
orderings from any TLS version.
OTP-15060 Application(s): ssl
TLS will now try to reconstructed an incomplete
certificate chains from its local CA-database and use
that data for the certificate path validation. This
especially makes sense for partial chains as then the
peer might not send an intermediate CA as it is
considered the trusted root in that case.
OTP-15193 Application(s): ssl
Option keyfile defaults to certfile and should be
trumped with key. This failed for engine keys.
OTP-15234 Application(s): ssl
Error message improvement when own certificate has
decoding issues, see also issue ERL-668.
OTP-15281 Application(s): ssl
Correct dialyzer spec for key option
Full runtime dependencies of ssl-9.0.2: crypto-4.2, erts-10.0,
inets-5.10.7, kernel-6.0, public_key-1.5, stdlib-3.5
---------------------------------------------------------------------
--- stdlib-3.6 ------------------------------------------------------
---------------------------------------------------------------------
The stdlib-3.6 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15252 Application(s): stdlib
Related Id(s): ERL-667
The specs of filename:basedir/2,3 are corrected.
--- Improvements and New Features ---
OTP-15253 Application(s): stdlib
Related Id(s): ERL-55, OTP-13229
Let dets:open_file() exit with a badarg message if
given a raw file name (a binary).
OTP-15304 Application(s): stdlib
The Format argument of the formatting functions in
modules io and io_lib is accepted even if it is, for
example, a list of binaries. This is how it used to be
before Erlang/OTP 21.0.
Full runtime dependencies of stdlib-3.6: compiler-5.0, crypto-3.3,
erts-10.0, kernel-6.0, sasl-3.0
---------------------------------------------------------------------
--- syntax_tools-2.1.6 ----------------------------------------------
---------------------------------------------------------------------
The syntax_tools-2.1.6 application can be applied independently of
other applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15207 Application(s): syntax_tools
Related Id(s): PR-1888
Fix the TypeName type in erl_syntax_lib.
OTP-15291 Application(s): syntax_tools
Related Id(s): ERL-719
Correct unfolding of the stacktrace variable.
OTP-15294 Application(s): syntax_tools
Correct erl_syntax:revert/1 bug regarding the types
map() and tuple().
--- Improvements and New Features ---
OTP-15165 Application(s): syntax_tools
Related Id(s): PR-1842
Support bitstrings as literals in module erl_syntax.
Full runtime dependencies of syntax_tools-2.1.6: compiler-7.0,
erts-9.0, kernel-5.0, stdlib-3.4
---------------------------------------------------------------------
--- tftp-1.0.1 ------------------------------------------------------
---------------------------------------------------------------------
The tftp-1.0.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of tftp-1.0.1: kernel-6.0, stdlib-3.5
---------------------------------------------------------------------
--- tools-3.0.1 -----------------------------------------------------
---------------------------------------------------------------------
The tools-3.0.1 application can be applied independently of other
applications on a full OTP 21 installation.
--- Improvements and New Features ---
OTP-15213 Application(s): tools
Related Id(s): PR-1807
The HTML pages generated by cover:analyse_to_file/1 and
related functions is improved for readability.
OTP-15239 Application(s): tools
Related Id(s): PR-1728
Add alignment functionality in emacs.
Full runtime dependencies of tools-3.0.1: compiler-5.0, erts-9.1,
kernel-5.4, runtime_tools-1.8.14, stdlib-3.4
---------------------------------------------------------------------
--- wx-1.8.5 --------------------------------------------------------
---------------------------------------------------------------------
The wx-1.8.5 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15230 Application(s): wx
Related Id(s): PR-1860
Fixed compilation warning on Darwin.
Full runtime dependencies of wx-1.8.5: erts-6.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- xmerl-1.3.18 ----------------------------------------------------
---------------------------------------------------------------------
The xmerl-1.3.18 application can be applied independently of other
applications on a full OTP 21 installation.
--- Fixed Bugs and Malfunctions ---
OTP-15190 Application(s): debugger, edoc, eldap, et, eunit, ftp,
hipe, jinterface, megaco, observer, odbc, os_mon,
otp_mibs, parsetools, reltool, sasl, tftp, xmerl
Improved documentation.
Full runtime dependencies of xmerl-1.3.18: erts-6.0, kernel-3.0,
stdlib-2.5
---------------------------------------------------------------------
---------------------------------------------------------------------
---------------------------------------------------------------------
--- POTENTIAL INCOMPATIBILITIES -------------------------------------
OTP-15225 Application(s): erts
Fixed a bug causing some Erlang references to be
inconsistently ordered. This could for example cause
failure to look up certain elements with references as
keys in search data structures. This bug was introduced
in R13B02.
Thanks to Simon Cornish for finding the bug and
supplying a fix.
--- compiler-7.2.4 --------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15292 Application(s): compiler
Fix a regression in OTP-15204 that removed .beam file
metadata that some external build tools relied on.
OTP-15204 Application(s): compiler
Related Id(s): ERL-679
Fixed an issue where files compiled with the
+deterministic option differed if they were compiled in
a different directory but were otherwise identical.
OTP-15156 Application(s): compiler
Related Id(s): ERL-655
In rare cases involving matching of binary literal
strings, the compiler could optimize away code that
should be executed.
OTP-15157 Application(s): compiler
There could be an internal consistency check failure
when compiling code that called map_get(Key, Map) and
then updated the same map.
OTP-15166 Application(s): compiler
Related Id(s): ERL-660
In rare circumstances, the compiler could crash in
beam_jump when compiling a floating point operation.
OTP-15150 Application(s): compiler
Related Id(s): ERL-650
The compiler could could crash when compiling a
complicated function that used the binary syntax.
Full runtime dependencies of compiler-7.2.4: crypto-3.6, erts-9.0,
hipe-3.12, kernel-4.0, stdlib-2.5
--- erts-10.0.8 -----------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15289 Application(s): erts
Related Id(s): ERIERL-235, ERL-576, OTP-14943
As of ERTS version 10.0 (OTP 21.0) the erl_child_setup
program, which creates port programs, ignores TERM
signals. This setting was unintentionally inherited by
port programs. Handling of TERM signals in port
programs has now been restored to the default behavior.
That is, terminate the process.
OTP-15296 Application(s): erts
Related Id(s): ERIERL-226, OTP-15279
The fix made for OTP-15279 in erts-10.07 (OTP-21.0.8)
was not complete. It could cause a new connection
attempt to be incorrectly aborted in certain cases.
This fix will amend that flaw.
OTP-15275 Application(s): erts
Related Id(s): PR-1943
A process could get stuck in an infinite rescheduling
loop between normal and dirty schedulers. This bug was
introduced in ERTS version 10.0.
Thanks to Maxim Fedorov for finding and fixing this
issue.
OTP-15279 Application(s): erts
Related Id(s): ERIERL-226
Garbage collection of a distribution entry could cause
an emulator crash if net_kernel had not brought
previous connection attempts on it down properly.
OTP-15237 Application(s): erts
A race between termination of a process and resume of
the same process via erlang:resume_process/1 could
cause the VM to crash. This bug was introduced in erts
version 10.0 (OTP 21.0).
OTP-15269 Application(s): erts
Related Id(s): ERL-713
When tracing on running, in trace events could be lost
when a process was rescheduled between a dirty and a
normal scheduler.
OTP-15223 Application(s): erts
Fixed a bug which caused an emulator crash when
enif_send() was called by a NIF that executed on a
dirty scheduler. The bug was either triggered when the
NIF called enif_send() without a message environment,
or when the process executing the NIF was send traced.
OTP-15225 Application(s): erts
*** POTENTIAL INCOMPATIBILITY ***
Fixed a bug causing some Erlang references to be
inconsistently ordered. This could for example cause
failure to look up certain elements with references as
keys in search data structures. This bug was introduced
in R13B02.
Thanks to Simon Cornish for finding the bug and
supplying a fix.
OTP-15169 Application(s): erts
Fixed a bug that prevented the noshell option from
working correctly on Mac OS X and BSD.
OTP-15184 Application(s): erts
Fixed a crash when matching directly against a literal
map using a single key that had been saved on the
stack.
OTP-15196 Application(s): erts
Fix node crash when passing a bad time option to
file:read_file_info/2.
OTP-15154 Application(s): erts
Fixed a scheduler bug that caused normal schedulers to
run dirty code.
OTP-15183 Application(s): erts
Related Id(s): ERL-670
Fixed a bug in erlang:trace_info/2 which caused the
emulator to crash when a bad argument was passed. The
bug was introduced in ERTS version 10.0.
OTP-15067 Application(s): erts
Related Id(s): ERL-573
Fixed a rare bug that could cause processes to be
scheduled after they had been freed.
OTP-15158 Application(s): erts
Related Id(s): ERL-654
Fixed a race condition in the inet driver that could
cause receive to hang when the emulator was compiled
with gcc 8.
OTP-15147 Application(s): erts
Related Id(s): ERL-644
The keys used in os:getenv and os:putenv are
case-insensitive again on Windows.
Full runtime dependencies of erts-10.0.8: kernel-6.0, sasl-3.0.1,
stdlib-3.5
--- kernel-6.0.1 ----------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15280 Application(s): kernel
Related Id(s): ERIERL-226, OTP-15279
Fixed bug in net_kernel that could cause an emulator
crash if certain connection attempts failed. Bug exists
since kernel-6.0 (OTP-21.0).
Full runtime dependencies of kernel-6.0.1: erts-10.0, sasl-3.0,
stdlib-3.5
--- crypto-4.3.2 ----------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-15233 Application(s): crypto
Update the crypto engine functions to handle multiple
loads of an engine.
engine_load/3/4 is updated so it doesn't add the engine
ID to OpenSSLs internal list of engines which makes it
possible to run the engine_load more than once if it
doesn't contain global data.
Added ensure_engine_loaded/2/3 which guarantees that
the engine just is loaded once and the following calls
just returns a reference to it. This is done by add the
ID to the internal OpenSSL list and check if it is
already registered when the function is called.
Added ensure_engine_unloaded/1/2 to unload engines
loaded with ensure_engine_loaded.
Then some more utility functions are added.
engine_add/1, adds the engine to OpenSSL internal list
engine_remove/1, remove the engine from OpenSSL
internal list
engine_get_id/1, fetch the engines id
engine_get_name/1, fetch the engine name
OTP-15194 Application(s): crypto
Related Id(s): ERL-673
Fixed a node crash in crypto:compute_key(ecdh, ...)
when passing a wrongly typed Others argument.
Full runtime dependencies of crypto-4.3.2: erts-9.0, kernel-5.3,
stdlib-3.4
--- public_key-1.6.1 ------------------------------------------------
OTP-15151 Application(s): public_key
Related Id(s): OTP-15113
Some of the keylengths in the newly generated moduli
file in public_key are not universally supported. This
could cause the SSH key exchange
diffie-hellman-group-exchange-sha* to fail.
Those keylengths are now removed.
Full runtime dependencies of public_key-1.6.1: asn1-3.0, crypto-3.8,
erts-6.0, kernel-3.0, stdlib-3.5
--- stdlib-3.5.1 ----------------------------------------------------
OTP-15159 Application(s): stdlib
Fix a bug that could cause a crash when formatting a
list of non-characters using the control sequences p or
P and limiting the output with the option chars_limit.
Full runtime dependencies of stdlib-3.5.1: compiler-5.0, crypto-3.3,
erts-10.0, kernel-6.0, sasl-3.0
Performing substitutions during post-patch breaks tools such as mkpatches,
making it very difficult to regenerate correct patches after making changes,
and often leading to substituted string replacements being committed.
Potential Incompatibilities
- All Corba applications are now moved from the OTP repository
- A new Corba repository will be created https://github.com/erlang
- New applications ftp and tftp, moved from inets
- ssl no longer supports 3_DES cipher suites or RSA-key exchange
cipher suites by default
- Erlang:monitor on a primitive node (erl_interface, jinterface, etc)
will no longer fail with badarg exception. Instead a monitor will be
created, but it will only supervise the connection to the node.
Erts:
- Enhanced IO scalability
- Support for usage of distribution controller processes for
alternative transports, routing etc
- compact instructions on 64bit systems for code below 4GB 20% less
memory for loaded code
- Rewrite of the efile-driver with NIFs and "Dirty schedulers"
resulting in faster file operations
- non-smp VM removed
- link and monitor optimized for scalability
- os:getenv/putenv now work on thread-safe emulation. No longer in
sync with libc getenv(3). Manual synchronization will be needed.
Compiler:
- Misc compiler optimizations including contributions from the Elixir
team resulting in 10% improvements in benchmarks
- "Tuple calls" have been removed from the run-time system.
- Code such as f({ok, Val}) -> {ok, Val} is now automatically
rewritten to f({ok, Val} = Tuple) -> Tuple. this reduces code size,
execution time, and removed GC pressure.
- More information in stacktrace from a number of operators
- erlang:get_stacktrace/0 deprecated to be replaced with try ... catch
C:R:Stacktrace -> ...
- Creation of small maps with literal keys optimized.
- A new predefined macro OTP_RELEASE and preprocessor directives -if
and -elif
Security:
- DTLS is now supported in the SSL application
- Enhanced support for distribution over TLS
- "unsecure" ciphers removed from defaults in SSL and SSH.
- A new option value defined to facilitate implementing exec servers.
Old option kept for compatibility, but now gives errors on stderror.
Standard libraries:
- New API for logging, logger
- New uri_string module for parsing URIs according to "The standard"
- New function lists:search(list,fun/1) -> {ok, Value} | false
- Changed default behaviour of .erlang loading. escript, erlc,
dialyzer and typer no longer load an .erlang at all.
ssl:
- Added new API functions to facilitate cipher suite
handling
erts, observer:
- More crash dump info such as: process binary virtual
heap stats, full info for process causing out-of-mem
during GC, more port related info, and dirty scheduler
info.
inets:
- Add support for unix domain sockets in the http client.
Some highlights:
crypto, ssl:
- The crypto API is extended to use private/public keys
stored in an Engine for sign/verify or encrypt/decrypt
operations.
- The ssl application provides an API to use this new
engine concept in TLS.
ssh:
- SSH can now fetch the host key from the private keys
stored in an Engine. See the crypto application for
details about Engines.
ssl:
- A new command line option -ssl_dist_optfile has been
added to facilitate specifying the many options needed
when using SSL as the distribution protocol.
stdlib:
- Improve performance of the new string functionality
when handling ASCII characters.
Full release notes:
http://www.erlang.org/download/otp_src_20.2.readme
Some highlights for 20.1:
- crypto, public_key: Extend crypto and public_key functions sign and
verify with:
- support for RSASSA-PS padding for signatures and for saltlength
setting
- X9.31 RSA padding.
- sha, sha224, sha256, sha384, and sha512 for dss signatures as
mentioned in NIST SP 800-57 Part 1.
- ripemd160 to be used for rsa signatures.
- A new tuple in crypto:supports/0 reports supported MAC algorithms.
- diameter:
- Add service option decode_format to allow incoming messages to be
decoded into maps instead of records.
- Decode performance has been improved.
- Add service/transport option avp_dictionaries to give better
support for dictionaries only defining AVPs.
- erts: Upgraded the ERTS internal PCRE library from version 8.40 to
version 8.41.
- erts, kernel, tools: Profiling with lock counting can now be fully
toggled at runtime in the lock counting emulator (-emu_type lcnt).
- erts: The zlib module has been refactored and all its operations
will now yield appropriately, allowing them to be used freely in
concurrent applications.
- erts, tools: Add erlang:iolist_to_iovec/1, which converts an
iolist() to an erlang:iovec(), which is suitable for use with
enif_inspect_iovec().
- erts: Add new nif API functions for managing an I/O Queue.
- observer/crashdump_viewer:
- Reading of crash dumps with many binaries is optimized.
- A progress bar is shown when the detail view for a process is
opened.
- The cdv script now sets ERL_CRASH_DUMP_SECONDS=0 to avoid
generating a new crash dump from the node running the Crashdump
Viewer.
- observer: Add system statistics and limits to frontpage in observer.
- public_key, ssl**: Improved error propagation and reports
- ssh: A new option modify_algorithms is implemented. It enables
specifying changes on the default algorithms list.
- tools/xref: The predefined Xref analysis locals_not_used now
understands the -on_load() attribute and does not report unused
functions.
- tools/fprof: When sampling multiple processes and analyzing with
totals set to true, the output now sums together all caller and
callee entries which concerns the same function.
Potential Incompatibilities
---------------------------
- ERTS:
- The non SMP Erlang VM is deprecated and not built by default
- Remove deprecated erlang:hash/2
- erlang:statistics/1 with scheduler_wall_time now also includes
info about dirty CPU schedulers.
- The new purge strategy introduced in OTP 19.1 is mandatory and
slightly incompatible for processes holding funs
- The NIF library reload is not supported anymore.
- Atoms can now contain arbitrary unicode characters which means
that the DFLAG_UTF8_ATOMS capability in the distribution protocol
must be supported if an OTP 20 node should accept the connection
with another node or library.
- Asn1: Deprecated module and functions removed (asn1rt,
asn1ct:encode/3 and decode/3)
- Ssh: client only option in a call to start a daemon will now fail
Highlights
----------
- Erts:
- Dirty schedulers enabled and supported on VM with SMP support.
- support for "dirty" BIFs and "dirty" GC.
- erlang:garbage_collect/2 for control of minor or major GC
- Erlang literals are no longer copied when sending messages.
- Improved performance for large ETS tables, >256 entries (except
ordered_set)
- erlang:system_info/1 atom_count and atom_limit
- Reduced memory pressure by converting sub-binaries to
heap-binaries during GC
- enif_select, map an external event to message
- Improvements of timers internally in the VM resulting in reduced
memory consumption and more efficient administration for timers
- Compiler:
- Code generation for complicated guards is improved.
- Warnings for repeated identical map keys. #{'a'=>1, 'b'=>2,
'a'=>3} will warn for the repeated key a.
- By default there is now a warning when export_all is used. Can be
disabled
- Pattern matching for maps is optimized
- New option deterministic to omit path to source + options info the
BEAM file.
- Atoms may now contain arbitrary unicode characters.
- compile:file/2 has an option to include extra chunks in the BEAM
file.
- Misc other applications
- Significantly updated string module with unicode support and many
new functions
- crypto now supports OpenSSL 1.1
- Unnamed ets tables optimized
- gen_fsm is deprecated and replaced by gen_statem
- A new event manager to handle a subset of OS signals in Erlang
- Optimized sets add_element, del_element and union
- Added rand:jump/0-1
- When a gen_server crashes, the stacktrace for the client will be
printed to facilitate debugging.
- take/2 has been added to dict, orddict, and gb_trees.
- take_any/2 has been added to gb_trees
- erl_tar support for long path names and new file formats
- asn1: the new maps option changes the representation of SEQUENCE
to be maps instead of records
- A TLS client will by default call
public_key:pkix_verify_hostname/2 to verify the hostname
- ssl: DTLS documented in the API, experimental
- ssh: improving security, removing and adding algorithms
- New math:fmod/2
Some highlights for 19.3:
- crypto, ssh: The implementation of the key exchange algorithms
diffie-hellman-group-exchange-sha* are optimized, up to a factor of 11
for the slowest ( = biggest and safest) group size.
- dialyzer: The peak memory consumption is reduced. Analyzing modules
with binary construction with huge strings is now much faster.
- erts: A received SIGTERM signal to beam will generate a 'stop' message
to the init process and terminate the Erlang VM nicely. This is
equivalent to calling init:stop/0.
- kernel: The functions in the 'file' module that take a list of paths
(e.g. file:path_consult/2) will now continue to search in the path if
the path contains something that is not a directory.
- public_key: New function pkix_verify_hostname/2,3 Implements
certificate hostname checking. See the manual and RFC 6125.
- public_key, ssh: The ssh host key fingerprint generation now also
takes a list of algorithms and returns a list of corresponding
fingerprints. See public_key:ssh_hostkey_fingerprint/2 and the option
silently_accept_hosts in ssh:connect.
- ssl: Move PEM cache to a dedicated process, to avoid making the SSL
manager process a bottleneck. This improves scalability of TLS
connections.
- stdlib: filename:safe_relative_path/1 to sanitize a relative path has
been added.
Full release notes:
http://erlang.org/download/otp_src_19.3.readme
Erlang/OTP 19.2 is the second service release for the 19 major release.
The service release contains mostly bug fixes and characteristics
improvements.
Some highlights for 19.2
* STDLIB: The new behaviour gen_statem has been improved with 3 new
features: the possibility to use old style non-proxy timeouts
for gen_statem:call/2,3, state entry code, and state
timeouts. These are backwards compatible. Minor code and
documentation improvements has been performed including a
borderline semantics correction of timeout zero handling.
* SSL: Experimental version of DTLS. It is runnable but not complete
and cannot be considered reliable for production usage. To use
DTLS add the option {protocol, dtls} to ssl:connect and ssl:listen.
* SSH: Extended the option silently_accept_hosts for ssh:connect to
make it possible for the client to check the SSH host key
fingerprint string. Se the reference manual for SSH.
* ~40 contributions since the previous service release OTP 19.1
You can find the README and the full listing of changes for this
service release at
http://www.erlang.org/download/otp_src_19.2.readme
Some highlights of the release are:
- erts: Improved dirty scheduler support. A purge of a module will
- not have to wait for completion of all ongoing dirty NIF calls.
- erts: Improved accuracy of timeouts on MacOS X.
- kernel: Add net_kernel:setopts/2 and net_kernel:getopts/2 to
- control options for distribution sockets in runtime.
- asn1: Compiling multiple ASN.1 modules in the same directory with
- parallel make (make -j) should now be safe.
- httpd: support for PUT and DELETE in mod_esi
- ~30 contributions since 19.0
You can find the Release Notes with more detailed info at
http://www.erlang.org/download/otp_src_19.1.readme
- compiler, stdlib:
- New preprocessor macros ?FUNCTION_NAME, ?FUNCTION_ARITY
- New preprocessor directives -error(Term) and -warning(Term) to
cause a compilation error or warning, respectively.
- gen_statem a new state machine behavior
- mnesia_ext: plugin of external storage solutions to mnesia
- crypto: uses EVP interface in OpenSSL resulting in generally
better performance and support for HW acceleration
- ssh: performance improvements, uses the new gen_statem behavior
- ssl: enhanced error log messages
- dialyzer: the support for maps is very much extended both the
type specification syntax and the type analysis.
- erts:
- erlang:open_port(spawn, ...) 3-5 times faster
- tracing, extensive improvements (scalability, speed, match
specifications on send/receive, support for lttng, ...)
- dirty schedulers improved
- per process configurable handling of message_queue
- fast loading of multiple modules
- max_heap_size process flag
- erts/kernel: Experimental support for Unix Domain Sockets
Full changelog:
http://erlang.org/download/otp_src_19.0.readme
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