Inital Release: OTP 25.0
Git Tag: OTP-25.0
Date: 2022-04-13
Trouble Report Id: OTP-15991, OTP-15993, OTP-16464, OTP-16607,
OTP-16643, OTP-16644, OTP-16702, OTP-16852,
OTP-16982, OTP-17119, OTP-17151, OTP-17224,
OTP-17304, OTP-17318, OTP-17323, OTP-17351,
OTP-17370, OTP-17414, OTP-17447, OTP-17471,
OTP-17479, OTP-17480, OTP-17481, OTP-17504,
OTP-17518, OTP-17523, OTP-17524, OTP-17544,
OTP-17550, OTP-17551, OTP-17554, OTP-17555,
OTP-17556, OTP-17558, OTP-17561, OTP-17562,
OTP-17566, OTP-17569, OTP-17589, OTP-17592,
OTP-17608, OTP-17612, OTP-17617, OTP-17627,
OTP-17630, OTP-17636, OTP-17644, OTP-17654,
OTP-17660, OTP-17661, OTP-17667, OTP-17669,
OTP-17676, OTP-17681, OTP-17682, OTP-17683,
OTP-17684, OTP-17685, OTP-17701, OTP-17704,
OTP-17705, OTP-17710, OTP-17717, OTP-17720,
OTP-17728, OTP-17729, OTP-17733, OTP-17752,
OTP-17753, OTP-17755, OTP-17758, OTP-17762,
OTP-17772, OTP-17778, OTP-17779, OTP-17784,
OTP-17802, OTP-17810, OTP-17819, OTP-17820,
OTP-17821, OTP-17824, OTP-17826, OTP-17832,
OTP-17836, OTP-17841, OTP-17842, OTP-17846,
OTP-17855, OTP-17860, OTP-17866, OTP-17869,
OTP-17870, OTP-17878, OTP-17881, OTP-17882,
OTP-17884, OTP-17885, OTP-17889, OTP-17890,
OTP-17892, OTP-17894, OTP-17897, OTP-17899,
OTP-17901, OTP-17908, OTP-17909, OTP-17910,
OTP-17911, OTP-17915, OTP-17920, OTP-17921,
OTP-17923, OTP-17925, OTP-17927, OTP-17930,
OTP-17935, OTP-17939, OTP-17945, OTP-17950,
OTP-17951, OTP-17953, OTP-17958, OTP-17961,
OTP-17964, OTP-17965, OTP-17968, OTP-17969,
OTP-17970, OTP-17974, OTP-17976, OTP-17977,
OTP-17980, OTP-17984, OTP-17985, OTP-17986,
OTP-17988, OTP-17990, OTP-17991, OTP-17996,
OTP-17997, OTP-17999, OTP-18000, OTP-18001,
OTP-18003, OTP-18008, OTP-18009, OTP-18011,
OTP-18012, OTP-18014, OTP-18015, OTP-18020,
OTP-18027, OTP-18033, OTP-18034, OTP-18035,
OTP-18036, OTP-18038, OTP-18039, OTP-18047
Seq num: ERIERL-590, ERIERL-663, ERIERL-760, ERL-1347,
GH-2375, GH-2690, GH-4143, GH-4492, GH-4622,
GH-4673, GH-4759, GH-4784, GH-4819, GH-4853,
GH-4915, GH-4965, GH-4968, GH-4971, GH-5016,
GH-5071, GH-5093, GH-5094, GH-5140, GH-5204,
GH-5214, GH-5297, GH-5368, GH-5376, GH-5379,
GH-5402, GH-5403, GH-5463, GH-5513, GH-5606,
GH-5617, GH-5655, GH-5683, GH-5728, GH-5780,
GH-5782, GH-5801, GH-5828
System: OTP
Release: 25
Application: asn1-5.0.19, common_test-1.23, compiler-8.2,
crypto-5.1, debugger-5.3, dialyzer-5.0,
diameter-2.2.6, edoc-1.2, erl_docgen-1.3,
erl_interface-5.3, erts-13.0, eunit-2.7.1,
inets-8.0, jinterface-1.13, kernel-8.4,
megaco-4.4, mnesia-4.21, observer-2.12,
odbc-2.14, parsetools-2.4, public_key-1.13,
runtime_tools-1.19, sasl-4.2, snmp-5.13,
ssh-4.14, ssl-10.8, stdlib-4.0,
syntax_tools-3.0, tools-3.5.3, wx-2.2,
xmerl-1.3.29
Predecessor: OTP
Check out the git tag OTP-25.0, and build a full OTP system including
documentation.
---------------------------------------------------------------------
--- HIGHLIGHTS ------------------------------------------------------
---------------------------------------------------------------------
OTP-15991 Application(s): erts, stdlib
Related Id(s): PR-5208
Users can now configure ETS tables with the
{write_concurrency, auto} option. This option forces
tables to automatically change the number of locks that
are used at run-time depending on how much concurrency
is detected. The {decentralized_counters, true} option
is enabled by default when {write_concurrency, auto} is
active.
Benchmark results comparing this option with the other
ETS optimization options are available here:
https://erlang.org/bench/ets_bench_result_lock_config.html
OTP-16702 Application(s): compiler, erts
To enable more optimizations, BEAM files compiled with
OTP 21 and earlier cannot be loaded in OTP 25.
OTP-16982 Application(s): erts
Related Id(s): PR-5020
The signal queue of a process with
message_queue_data=off_heap* has been optimized to
allow parallel reception of signals from multiple
processes.
This is possible to do as Erlang only guarantees that
signals (i.e., message signals and non-message signals)
sent from a single process to another process are
ordered in send order. However, there are no ordering
guarantees for signals sent from different processes to
a particular process. Therefore, several processes can
send signals in parallel to a specific process without
synchronizing with each other. However, such signal
sending was previously always serialized as the senders
had to acquire the lock for the outer signal queue of
the receiving process. This parallel signal sending
optimization yields much better scalability for signal
sending than what was previously possible, see
https://erlang.org/bench/sigq_bench_result.html for
benchmark results.
* Information about how to enable the
message_queue_data=off_heap setting can be found in the
documentation of the function erlang:process_flag/2.
OTP-17119 Application(s): erts
Related Id(s): PR-4869
The JIT now works for 64-bit ARM processors.
OTP-17151 Application(s): compiler, erts
Related Id(s): ERIERL-590, PR-5479
Added support for the compile attribute -nifs() to
empower compiler and loader with information about
which functions may be overridden as NIFs by
erlang:load_nif/2. It is recommended to use this
attribute in all modules that load NIF libraries.
OTP-17351 Application(s): stdlib
Related Id(s): GH-4673, PR-4952
The format_status/2 callback for gen_server, gen_statem
and gen_event has been deprecated in favor of the new
format_status/1 callback.
The new callback adds the possibility to limit and
change many more things than the just the state, such
as the last received message, the reason for
terminating and more events specific to each type of
behavior. See the respective modules documentation for
more details.
OTP-17481 Application(s): stdlib
Related Id(s): PR-4811
The timer module has been modernized and made more
efficient, which makes the timer server less
susceptible to being overloaded. The timer:sleep/1
function now accepts an arbitrarily large integer.
OTP-17504 Application(s): compiler, erts
Related Id(s): GH-4971, PR-5281, PR-5752
When binary construction using the binary syntax fails,
the error message printed in the shell and by
erl_error:format_exception/3,4 will contain more
detailed information about what went wrong.
OTP-17684 Application(s): compiler, erts
Related Id(s): PR-5316, PR-5664
The Erlang compiler now includes type information in
BEAM files, and the JIT can now use that type
information to do optimizations such as eliminating or
simplifying type tests.
OTP-17705 Application(s): compiler
Related Id(s): PR-5411
The maybe ... end construction proposed in EEP-49 has
been implemented. It can simplify complex code where
otherwise deeply nested cases would have to be used.
To enable maybe, give the option -enable-feature
maybe_expr to erlc or add -feature(enable, maybe_expr).
inside the module.
OTP-17710 Application(s): otp
Related Id(s): PR-5597
A new DEVELOPMENT how-to guide has been added that
describes how to build and test Erlang/OTP when fixing
bugs or developing new functionality.
The makefile system has been extended to make it easier
to run tests at different granulates directly from the
command line. This new functionality is described in
the development how-to.
Using the extended makefile system, testing has been
added to the Github actions run for each opened PR so
that more bugs are caught earlier when bug fixes and
new features are proposed.
OTP-17720 Application(s): common_test, kernel, stdlib
Related Id(s): PR-5162
The new module peer supersedes the slave module. The
slave module is now deprecated and will be removed in
OTP 27.
peer contains an extended and more robust API for
starting erlang nodes.
OTP-17784 Application(s): kernel, stdlib
Related Id(s): PR-5792
In order to make it easier for the user to manage
multiple outstanding asynchronous call requests, new
functionality utilizing request identifier collections
have been introduced in erpc, gen_server, gen_statem,
and gen_event.
OTP-17841 Application(s): compiler, erts
Related Id(s): PR-5694
When a record matching or record update fails, a
{badrecord,ExpectedRecordTag} exception used to be
raised. In this release, the exception has been changed
to {badrecord,ActualValue}, where ActualValue is the
actual that was found instead of the expected record.
OTP-17911 Application(s): kernel
Related Id(s): OTP-17843, PR-5611, PR-5687
*** POTENTIAL INCOMPATIBILITY ***
As of OTP 25, global will by default prevent
overlapping partitions due to network issues by
actively disconnecting from nodes that reports that
they have lost connections to other nodes. This will
cause fully connected partitions to form instead of
leaving the network in a state with overlapping
partitions.
Prevention of overlapping partitions can be disabled
using the prevent_overlapping_partitions kernel(6)
parameter, making global behave like it used to do.
This is, however, problematic for all applications
expecting a fully connected network to be provided,
such as for example mnesia, but also for global itself.
A network of overlapping partitions might cause the
internal state of global to become inconsistent. Such
an inconsistency can remain even after such partitions
have been brought together to form a fully connected
network again. The effect on other applications that
expects that a fully connected network is maintained
may vary, but they might misbehave in very subtle hard
to detect ways during such a partitioning. Since you
might get hard to detect issues without this fix, you
are strongly advised not to disable this fix. Also note
that this fix has to be enabled on all nodes in the
network in order to work properly.
OTP-17953 Application(s): stdlib
Related Id(s): PR-5621
Added filelib:ensure_path/1 that ensures that all
directories for the given path exists (unlike
filelib:ensure_dir/1, which will not create the last
segment of the path).
OTP-17969 Application(s): stdlib
Related Id(s): PR-5588
The functions groups_from_list/2 and groups_from_list/3
have been added to the maps module.
OTP-17977 Application(s): stdlib
Related Id(s): GH-5606, PR-5766
The functions uniq/1 and uniq/2 for removing duplicates
have been added to the lists module.
OTP-17988 Application(s): compiler, kernel, stdlib, syntax_tools
Added support for selectable features as described in
EEP-60. Features can be enabled/disabled during
compilation with options (ordinary and +term) to erlc
as well as with directives in the file. Similar options
can be used to erl for enabling/disabling features
allowed at runtime. The new maybe expression (EEP-49)
is fully supported as the feature maybe_expr.
OTP-18039 Application(s): compiler
Change format of feature options and directives for
better consistency. Options to erlc and the
-compile(..) directive now has the format {feature,
feature-name, enable | disable}. The -feature(..) now
has the format -feature(feature-name, enable |
disable).
---------------------------------------------------------------------
--- POTENTIAL INCOMPATIBILITIES -------------------------------------
---------------------------------------------------------------------
OTP-17544 Application(s): stdlib
Related Id(s): PR-5008
Fix gen_server:call with the first argument as self()
to throw an error instead of failing with a timeout.
The same fix has also been done for gen_statem:call/3,
gen_event:sync_notify/2 and any other functionality
relying on the internal gen:call/3 function.
A similar fix was also done when using io:format/2 and
the current group_leader was set to the current
process.
OTP-17569 Application(s): erts
Related Id(s): PR-4793
The growth rate of writable binaries has been adjusted
to only increase by 20% after 16MB in size. Before this
change the size would always double.
This change may degrade write performance of large
binaries.
OTP-17627 Application(s): inets, stdlib
Adjust uri_string:normalize behavior for URIs with
undefined port (URI string with a port colon but no
port value or URI map with port => undefined).
Remove redundant normalization from http_request
module.
Before this change, normalize would not remove port
subcomponent in such cases and could for example return
"http://localhost:" URI.
OTP-17644 Application(s): dialyzer
Related Id(s): PR-5223
Fixed a bug that could cause the type analyzer to enter
an infinite loop.
OTP-17681 Application(s): kernel
Related Id(s): PR-5307
The most, or at least the most used, rpc operations now
require erpc support in order to communicate with other
Erlang nodes. erpc was introduced in OTP 23. That is,
rpc operations against Erlang nodes of releases prior
to OTP 23 will fail.
OTP-17683 Application(s): erts
Related Id(s): PR-5306
Distributed spawn operations now require distributed
spawn_request() support. Distributed spawn_request()
was introduced in OTP 23. That is, distributed spawn
operations against Erlang nodes of releases prior to
OTP 23 will fail.
OTP-17821 Application(s): dialyzer
Related Id(s): GH-5016, OTP-17554, PR-5408
The default location of the plt has been changed from
$HOME to filename:basedir(user_cache,"erlang").
OTP-17866 Application(s): inets
This change removes deprecated functions:
http_uri:parse/1, http_uri:parse/2 and
http_uri:scheme_defaults/0.
This change delays until OTP-26 removal of deprecated
functions: http_uri:encode/1 and http_uri:decode/1.
This change marks httpd_util:decode_hex/1 and
httpd_util:encode_hex/1 as deprecated.
OTP-17889 Application(s): inets
Fixed typo in Reason term returned from
httpc_handler:handle_http_body.
After this change, could_not_establish_ssl_tunnel atom
is returned within Reason term.
OTP-17894 Application(s): syntax_tools
Related Id(s): PR-5509
The erl_syntax_lib:analyze_attribute/1 function would
return {Name, {Name, Value}} instead of {Name, Value}
(which is the documented return value).
OTP-17911 Application(s): kernel
Related Id(s): OTP-17843, PR-5611, PR-5687
*** HIGHLIGHT ***
As of OTP 25, global will by default prevent
overlapping partitions due to network issues by
actively disconnecting from nodes that reports that
they have lost connections to other nodes. This will
cause fully connected partitions to form instead of
leaving the network in a state with overlapping
partitions.
Prevention of overlapping partitions can be disabled
using the prevent_overlapping_partitions kernel(6)
parameter, making global behave like it used to do.
This is, however, problematic for all applications
expecting a fully connected network to be provided,
such as for example mnesia, but also for global itself.
A network of overlapping partitions might cause the
internal state of global to become inconsistent. Such
an inconsistency can remain even after such partitions
have been brought together to form a fully connected
network again. The effect on other applications that
expects that a fully connected network is maintained
may vary, but they might misbehave in very subtle hard
to detect ways during such a partitioning. Since you
might get hard to detect issues without this fix, you
are strongly advised not to disable this fix. Also note
that this fix has to be enabled on all nodes in the
network in order to work properly.
OTP-17920 Application(s): ssh
The representation of Edward curves (ed25519 and ed448)
inside ssh had a temporary representation (ed_pri and
ed_pub).
That is now changed to the public_key form. See the
manual for more information.
OTP-17921 Application(s): public_key
The deprecated public_key functions ssh_decode/2,
ssh_encode/2, ssh_hostkey_fingerprint/1 and
ssh_hostkey_fingerprint/2 are removed.
They are replaced by ssh_file:decode/2,
ssh_file:encode/2, ssh:hostkey_fingerprint/1 and
ssh:hostkey_fingerprint/2 respectively.
Note that the decode/2 and encode/2 are not exact
replacement functions, some minor changes may be
needed. Se the manual for more information.
OTP-17925 Application(s): stdlib
Related Id(s): PR-5631
The non-local function handler for the erl_eval can now
be called with either two or three arguments. When
called with three arguments, the first argument is the
annotation for the node in the abstract format.
All errors during evaluation will now be passed through
erlang:raise/3. If the restricted shell is active and
it does not let erlang:raise/3 through, evaluation
errors will be printed in less clear way. See the
documentation for restricted shell in shell.
OTP-17950 Application(s): wx
Added aux1Down and aux2Down fields to the wxMouseState
record. Since one record have been changed a
recompilation of user code might be required.
OTP-17965 Application(s): crypto
The infomation in error messages are increased.
Previously the error was signaled with en error class
exception badarg, notsup or error, and also in some
more ways like an other exception or a return value in
a non-standardized format.
Now it is an error-class exception
{notsup|badarg|error, InfoFromCfile,
Description::string()}.
The InfoFromCfile is a term with name and line number
of the C-file where the error was found. This is
primarily intended for a crypto maitntainer or an
advanced user to find the cause of complicated errors -
maybe in crypto itself. The contents of that term might
be changed in the future.
The Description is a clear text string that describes
the error. In case of badarg and notsup the intention
is that it should help the user to find the cause ("Bad
key size" as an example). Specially for some error that
are unlikely, the string may not be possible to
understand without deep knowledge of the underlying
cryptolib. Such messages are intended for a crypto
maintainer.
The first element on call stack (the S in try ... catch
error:E:S .... end) gives more information like the
actual argument list in the call of crypto and the
argument number (if possible) in the call to the NIF
inside crypto.
The functions in crypto affected by this change are:
sign/4, sign/5, verify/5, verify/6,
generate_key/2, generate_key/3, compute_key/4,
hash/2, hash/4, hash_init/1, hash_update/4,
hash_final/1,
mac/3,4, mac_init/3, mac_update/2, mac_final/2,
pbkdf2_hmac/5,
public_encrypt/4, private_decrypt/4, private_encrypt/4,
public_decrypt/4
This schema was introduced earlier in:
crypto_init/3, crypto_init/4, crypto_update/2,
crypto_final/1, crypto_get_data/1,
crypto_one_time/4, crypto_one_time/5,
crypto_one_time_aead/6, crypto_one_time_aead/7
OTP-17991 Application(s): stdlib
The function filename:safe_relative_path/1, which has
been deprecated since OTP 25, has been removed. Use
filelib:safe_relative_path/2 instead.
OTP-18009 Application(s): stdlib
Related Id(s): PR-5785
Fixed string:next_grapheme/1 to return an empty binary
in the tail for binary input for the last grapheme
cluster.
---------------------------------------------------------------------
--- OTP-25.0 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17224 Application(s): erts, otp
A test case has been added to the otp_SUITE that test
that the dependency versions for OTP's applications are
correct. The test case uses xref to check if the used
functions are available in the specified dependency
versions. The test case depends on the Erlang/OTP
team's testing infrastructure and will be skipped if
its dependencies are not met.
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17669 Application(s): erl_docgen, otp
Related Id(s): PR-5226
Any exported, but private function or module in
Erlang/OTP now generate an EEP-48 style documentation
entry with the content set to hidden.
Before this change, exported but private functions and
modules did not have any entry at all.
OTP-17710 Application(s): otp
Related Id(s): PR-5597
*** HIGHLIGHT ***
A new DEVELOPMENT how-to guide has been added that
describes how to build and test Erlang/OTP when fixing
bugs or developing new functionality.
The makefile system has been extended to make it easier
to run tests at different granulates directly from the
command line. This new functionality is described in
the development how-to.
Using the extended makefile system, testing has been
added to the Github actions run for each opened PR so
that more bugs are caught earlier when bug fixes and
new features are proposed.
---------------------------------------------------------------------
--- asn1-5.0.19 -----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17980 Application(s): asn1
The atom maybe has been quoted in the source code.
Full runtime dependencies of asn1-5.0.19: erts-11.0, kernel-7.0,
stdlib-3.13
---------------------------------------------------------------------
--- common_test-1.23 ------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17881 Application(s): common_test
Related Id(s): PR-5581
Fix bug when running parallel testcases and together
with one or more ct hooks that would cause the hook
lock process to crash and produce printouts in the ct
logs.
--- Improvements and New Features ---
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17676 Application(s): common_test
Related Id(s): PR-5021
Remove unused and undocumented tracer node
functionality.
OTP-17720 Application(s): common_test, kernel, stdlib
Related Id(s): PR-5162
*** HIGHLIGHT ***
The new module peer supersedes the slave module. The
slave module is now deprecated and will be removed in
OTP 27.
peer contains an extended and more robust API for
starting erlang nodes.
OTP-17882 Application(s): common_test
Related Id(s): PR-5581
The cth_surefire ct hook has been updated to include
the file and line number of the executed test case in
the xml output.
The performance of the hook has also been improved
greatly for test runs with many test cases.
Full runtime dependencies of common_test-1.23: compiler-6.0,
crypto-4.5, debugger-4.1, erts-7.0, ftp-1.0, inets-6.0, kernel-8.4,
observer-2.1, runtime_tools-1.8.16, sasl-2.5, snmp-5.1.2, ssh-4.0,
stdlib-4.0, syntax_tools-1.7, tools-3.2, xmerl-1.3.8
---------------------------------------------------------------------
--- compiler-8.2 ----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17820 Application(s): compiler
Fixed a rare bug that would crash the compiler during
type optimization.
OTP-17860 Application(s): compiler
Related Id(s): GH-5513, OTP-17226
Starting in OTP 24, when a fun was created and
immediately used, it would be inlined. An unintended
consequence of the inlining was that what would be a
function_clause exception without the inlining would
now be a rather confusing case_clause exception. This
has been corrected, so that function_clause exceptions
remain function_clause exceptions in inlined code.
--- Improvements and New Features ---
OTP-16702 Application(s): compiler, erts
*** HIGHLIGHT ***
To enable more optimizations, BEAM files compiled with
OTP 21 and earlier cannot be loaded in OTP 25.
OTP-17151 Application(s): compiler, erts
Related Id(s): ERIERL-590, PR-5479
*** HIGHLIGHT ***
Added support for the compile attribute -nifs() to
empower compiler and loader with information about
which functions may be overridden as NIFs by
erlang:load_nif/2. It is recommended to use this
attribute in all modules that load NIF libraries.
OTP-17504 Application(s): compiler, erts
Related Id(s): GH-4971, PR-5281, PR-5752
*** HIGHLIGHT ***
When binary construction using the binary syntax fails,
the error message printed in the shell and by
erl_error:format_exception/3,4 will contain more
detailed information about what went wrong.
OTP-17684 Application(s): compiler, erts
Related Id(s): PR-5316, PR-5664
*** HIGHLIGHT ***
The Erlang compiler now includes type information in
BEAM files, and the JIT can now use that type
information to do optimizations such as eliminating or
simplifying type tests.
OTP-17685 Application(s): compiler, erts
Improved the JIT's support for external tools like perf
and gdb, allowing them to show line numbers and even
the original Erlang source code when that can be found.
To aid them in finding the source code, the
absolute_path compiler option has been added to embed
the absolute file path of a module.
OTP-17705 Application(s): compiler
Related Id(s): PR-5411
*** HIGHLIGHT ***
The maybe ... end construction proposed in EEP-49 has
been implemented. It can simplify complex code where
otherwise deeply nested cases would have to be used.
To enable maybe, give the option -enable-feature
maybe_expr to erlc or add -feature(enable, maybe_expr).
inside the module.
OTP-17810 Application(s): compiler
Related Id(s): GH-5379
A subtle bug regarding variable scoping has been
corrected. Consider this example:
(A=1) + fun() -> A = 2() end
In the shell, the expression correctly evaluates to 3.
In compiled code, it raised a {badmatch, 2} exception.
OTP-17841 Application(s): compiler, erts
Related Id(s): PR-5694
*** HIGHLIGHT ***
When a record matching or record update fails, a
{badrecord,ExpectedRecordTag} exception used to be
raised. In this release, the exception has been changed
to {badrecord,ActualValue}, where ActualValue is the
actual that was found instead of the expected record.
OTP-17842 Application(s): compiler
Improved optimization of try/catch expressions.
OTP-17885 Application(s): compiler
Related Id(s): GH-5140
The beam_trim pass of the compiler could be extremely
slow for huge straight-line functions. It will now
compile such functions much faster (down to seconds
from minutes for some huge functions).
OTP-17988 Application(s): compiler, kernel, stdlib, syntax_tools
*** HIGHLIGHT ***
Added support for selectable features as described in
EEP-60. Features can be enabled/disabled during
compilation with options (ordinary and +term) to erlc
as well as with directives in the file. Similar options
can be used to erl for enabling/disabling features
allowed at runtime. The new maybe expression (EEP-49)
is fully supported as the feature maybe_expr.
OTP-18039 Application(s): compiler
*** HIGHLIGHT ***
Change format of feature options and directives for
better consistency. Options to erlc and the
-compile(..) directive now has the format {feature,
feature-name, enable | disable}. The -feature(..) now
has the format -feature(feature-name, enable |
disable).
Full runtime dependencies of compiler-8.2: crypto-5.1, erts-13.0,
kernel-8.4, stdlib-4.0
---------------------------------------------------------------------
--- crypto-5.1 ------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17984 Application(s): crypto
Remove faulty types run_time_error() and
descriptive_error().
--- Improvements and New Features ---
OTP-16643 Application(s): crypto
Related Id(s): OTP-16282
The deprecated low-level DH API is not used when crypto
is compiled with OpenSSL 3.0.
OTP-16644 Application(s): crypto
Related Id(s): OTP-16282
The deprecated low-level RSA API is not used when
crypto is compiled with OpenSSL 3.0.
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17471 Application(s): crypto
Related Id(s): PR-4750
Add crypto:hash_equals/2
OTP-17561 Application(s): crypto
Add /opt/homebrew/opt/openssl to standard locations to
search for OpenSSL cryptolib.
OTP-17701 Application(s): crypto
Related Id(s): OTP-16282
The deprecated low-level DSA API is not used when
crypto is compiled with OpenSSL 3.0.
OTP-17704 Application(s): crypto
Related Id(s): OTP-16282
The deprecated BN_pseudo_rand_range is not used when
crypto is compiled with OpenSSL 3.0.
OTP-17870 Application(s): crypto
crypto_dyn_iv_init/3 and crypto_dyn_iv_update/3 are
deprecated.
OTP-17965 Application(s): crypto
*** POTENTIAL INCOMPATIBILITY ***
The infomation in error messages are increased.
Previously the error was signaled with en error class
exception badarg, notsup or error, and also in some
more ways like an other exception or a return value in
a non-standardized format.
Now it is an error-class exception
{notsup|badarg|error, InfoFromCfile,
Description::string()}.
The InfoFromCfile is a term with name and line number
of the C-file where the error was found. This is
primarily intended for a crypto maitntainer or an
advanced user to find the cause of complicated errors -
maybe in crypto itself. The contents of that term might
be changed in the future.
The Description is a clear text string that describes
the error. In case of badarg and notsup the intention
is that it should help the user to find the cause ("Bad
key size" as an example). Specially for some error that
are unlikely, the string may not be possible to
understand without deep knowledge of the underlying
cryptolib. Such messages are intended for a crypto
maintainer.
The first element on call stack (the S in try ... catch
error:E:S .... end) gives more information like the
actual argument list in the call of crypto and the
argument number (if possible) in the call to the NIF
inside crypto.
The functions in crypto affected by this change are:
sign/4, sign/5, verify/5, verify/6,
generate_key/2, generate_key/3, compute_key/4,
hash/2, hash/4, hash_init/1, hash_update/4,
hash_final/1,
mac/3,4, mac_init/3, mac_update/2, mac_final/2,
pbkdf2_hmac/5,
public_encrypt/4, private_decrypt/4, private_encrypt/4,
public_decrypt/4
This schema was introduced earlier in:
crypto_init/3, crypto_init/4, crypto_update/2,
crypto_final/1, crypto_get_data/1,
crypto_one_time/4, crypto_one_time/5,
crypto_one_time_aead/6, crypto_one_time_aead/7
Full runtime dependencies of crypto-5.1: erts-9.0, kernel-5.3,
stdlib-3.9
---------------------------------------------------------------------
--- debugger-5.3 ----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17554 Application(s): debugger, erts, kernel, observer,
stdlib
Related Id(s): GH-5016, OTP-17821, PR-5408
The configuration files .erlang, .erlang.cookie and
.erlang.crypt can now be located in the XDG Config Home
directory.
See the documentation for each file and
filename:basedir/2 for more details.
Full runtime dependencies of debugger-5.3: compiler-8.0, erts-12.0,
kernel-8.0, stdlib-3.15, wx-2.0
---------------------------------------------------------------------
--- dialyzer-5.0 ----------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17644 Application(s): dialyzer
Related Id(s): PR-5223
*** POTENTIAL INCOMPATIBILITY ***
Fixed a bug that could cause the type analyzer to enter
an infinite loop.
--- Improvements and New Features ---
OTP-17524 Application(s): dialyzer
Optimize operations in the erl_types module.
Parallelize the Dialyzer pass remote.
OTP-17654 Application(s): dialyzer
Related Id(s): GH-5214
Added the missing_return and extra_return options to
raise warnings when specifications differ from inferred
types. These are similar to, but not quite as verbose
as overspecs and underspecs.
OTP-17819 Application(s): dialyzer
The race_conditions option has been removed.
OTP-17821 Application(s): dialyzer
Related Id(s): GH-5016, OTP-17554, PR-5408
*** POTENTIAL INCOMPATIBILITY ***
The default location of the plt has been changed from
$HOME to filename:basedir(user_cache,"erlang").
OTP-17826 Application(s): dialyzer
Related Id(s): PR-5498
dialyzer will now honor dependencies inside type
declarations. That is, if the declaration of an
exported type changes, all modules using said type will
be revisited.
OTP-17897 Application(s): dialyzer
Related Id(s): PR-5651
Dialyzer now better understands the types for min/2,
max/2, and erlang:raise/3. Because of that, Dialyzer
can potentially generate new warnings. In particular,
functions that use erlang:raise/3 could now need a spec
with a no_return() return type to avoid an unwanted
warning.
OTP-17964 Application(s): dialyzer
Related Id(s): PR-5660
The typer_core module has been added to provide an
Erlang API for running typer.
OTP-18035 Application(s): dialyzer
Related Id(s): PR-5802
Added the --annotate-in-place option to typer, which
can be used to annotate the specs that the tool
inferred directly into the source code files.
Full runtime dependencies of dialyzer-5.0: compiler-8.0, erts-12.0,
kernel-8.0, stdlib-3.15, syntax_tools-2.0, wx-2.0
---------------------------------------------------------------------
--- diameter-2.2.6 --------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17976 Application(s): diameter
Related Id(s): GH-5463
Fix decode of non-IP address types; that is, of values
of the derived AVP data format Address whose first two
octets specify an address family other than 1 (IP) or 2
(IP6). Such values have never been decoded, and were
treated as decode errors. They're now decoded to a
2-tuple of the integer() address family and binary()
remaining octets, with no family-specific decode. The
2-tuple distinguishes the decode from the 4-tuple and
8-tuple IP address decodes. 2-tuples are also now
encoded.
Note that even currently unassigned address families
are decoded: only the reserved values, 0 and 65535, are
treated as errors.
Full runtime dependencies of diameter-2.2.6: erts-10.0, kernel-3.2,
ssl-9.0, stdlib-3.0
---------------------------------------------------------------------
--- edoc-1.2 --------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17550 Application(s): edoc
Related Id(s): GH-5094, PR-5106
Fix unused types warnings in internal edoc module.
--- Improvements and New Features ---
OTP-17556 Application(s): edoc
Related Id(s): PR-5023
Add source file to the warning on skipped tags when
generating EEP-48 style docs.
OTP-17733 Application(s): edoc
Related Id(s): PR-5205
Fix the doc chunks generators to emit documentation
even if there is not module level documentation.
Fix the doc chunks generators to respect the @hidden
and @private tags properly for both modules and
functions.
Full runtime dependencies of edoc-1.2: erts-6.0, inets-5.10,
kernel-3.0, stdlib-3.15, syntax_tools-2.0, xmerl-1.3.7
---------------------------------------------------------------------
--- erl_docgen-1.3 --------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17669 Application(s): erl_docgen, otp
Related Id(s): PR-5226
Any exported, but private function or module in
Erlang/OTP now generate an EEP-48 style documentation
entry with the content set to hidden.
Before this change, exported but private functions and
modules did not have any entry at all.
Full runtime dependencies of erl_docgen-1.3: edoc-1.0, erts-11.0,
kernel-8.0, stdlib-3.15, xmerl-1.3.7
---------------------------------------------------------------------
--- erl_interface-5.3 -----------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17846 Application(s): erl_interface
Related Id(s): PR-5558
erl_call no longer links against nsl on platforms where
gethostbyname is provided by libc.
--- Improvements and New Features ---
OTP-17318 Application(s): erl_interface, erts, jinterface,
kernel
Related Id(s): PR-4972
The following distribution flags are now mandatory:
DFLAG_BIT_BINARIES, DFLAG_EXPORT_PTR_TAG,
DFLAG_MAP_TAGS, DFLAG_NEW_FLOATS, and DFLAG_FUN_TAGS.
This mainly concerns libraries or application that
implement the distribution protocol themselves.
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17682 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-5347
Removed use of node creation value zero as a wildcard.
Also prevent zero from being used as creation by
erl_interface and jinterface nodes.
OTP-17802 Application(s): erl_interface
Related Id(s): PR-5347
Changed creation arguments, of function ei_connet_init
and friends, from type short to unsigned int for full
32-bit range.
--- Known Bugs and Problems ---
OTP-16607 Application(s): erl_interface
Related Id(s): OTP-16608
The ei API for decoding/encoding terms is not fully
64-bit compatible since terms that have a
representation on the external term format larger than
2 GB cannot be handled.
---------------------------------------------------------------------
--- erts-13.0 -------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17447 Application(s): erts, kernel
Related Id(s): GH-4819
The socket option 'reuseaddr' is *no longer* ignored on
Windows.
OTP-17569 Application(s): erts
Related Id(s): PR-4793
*** POTENTIAL INCOMPATIBILITY ***
The growth rate of writable binaries has been adjusted
to only increase by 20% after 16MB in size. Before this
change the size would always double.
This change may degrade write performance of large
binaries.
OTP-17661 Application(s): erts, stdlib
Related Id(s): PR-5165
Fix reduction counting bug in re:run that caused the
function to yield too frequently when doing global
matches.
OTP-17758 Application(s): erts
Related Id(s): PR-5391
Fix spelling mistakes in epmd error messages.
OTP-17779 Application(s): erts
Related Id(s): GH-5403, PR-5599
Fix bug where the "newshell" would trigger a newline at
the column width of the terminal, even if the next
character to be printed was a newline. This would cause
the terminal to render two newlines instead of one.
OTP-17832 Application(s): erts, stdlib
Related Id(s): PR-5494
Fix the memory value returned from ets:info(Tid,memory)
when the read_concurrency option is used.
Before this fix the memory used by the scheduler
specific lock cache lines was not counted towards the
total. This caused the returned memory usage to be very
incorrect on systems with many schedulers for tables
with man locks.
OTP-17836 Application(s): erts
Related Id(s): PR-5546
Fix the undocumented --profile_boot option to work
again.
OTP-17970 Application(s): erts
Related Id(s): PR-5762
Let EPMD tolerate failure when binding to IPv4/IPv6
loopback intefaces in addition to user-supplied
addresses via ERL_EPMD_ADDRESS or the -address option.
This can happen, for example, if the host system has
ipv6 disabled via the disable_ipv6 sysctl.
OTP-18020 Application(s): erts, kernel
[socket] Encode of sockaddr has been improved.
OTP-18027 Application(s): erts
Fixed a bug in binary_to_term/1,
enif_make_map_from_arrays, erl_drv_send_term, and
Erlang distribution that could crash the emulator.
OTP-18047 Application(s): erts
Related Id(s): PR-5861
Fix erl_child_setup (the program used by
open_port({spawn,...}) and os:cmd/1) to better handle
partial reads from the Erlang VM.
--- Improvements and New Features ---
OTP-15991 Application(s): erts, stdlib
Related Id(s): PR-5208
*** HIGHLIGHT ***
Users can now configure ETS tables with the
{write_concurrency, auto} option. This option forces
tables to automatically change the number of locks that
are used at run-time depending on how much concurrency
is detected. The {decentralized_counters, true} option
is enabled by default when {write_concurrency, auto} is
active.
Benchmark results comparing this option with the other
ETS optimization options are available here:
https://erlang.org/bench/ets_bench_result_lock_config.html
OTP-16464 Application(s): erts, kernel
The net module now works on Windows.
OTP-16702 Application(s): compiler, erts
*** HIGHLIGHT ***
To enable more optimizations, BEAM files compiled with
OTP 21 and earlier cannot be loaded in OTP 25.
OTP-16852 Application(s): erts
Related Id(s): ERL-1347, PR-5195
Optimize minor garbage collection for processes with
large number of binaries, funs and/or external
pids/ports/refs. This is a continuation of the
optimization (OTP-17602) released in OTP-24.1.
OTP-16982 Application(s): erts
Related Id(s): PR-5020
*** HIGHLIGHT ***
The signal queue of a process with
message_queue_data=off_heap* has been optimized to
allow parallel reception of signals from multiple
processes.
This is possible to do as Erlang only guarantees that
signals (i.e., message signals and non-message signals)
sent from a single process to another process are
ordered in send order. However, there are no ordering
guarantees for signals sent from different processes to
a particular process. Therefore, several processes can
send signals in parallel to a specific process without
synchronizing with each other. However, such signal
sending was previously always serialized as the senders
had to acquire the lock for the outer signal queue of
the receiving process. This parallel signal sending
optimization yields much better scalability for signal
sending than what was previously possible, see
https://erlang.org/bench/sigq_bench_result.html for
benchmark results.
* Information about how to enable the
message_queue_data=off_heap setting can be found in the
documentation of the function erlang:process_flag/2.
OTP-17119 Application(s): erts
Related Id(s): PR-4869
*** HIGHLIGHT ***
The JIT now works for 64-bit ARM processors.
OTP-17151 Application(s): compiler, erts
Related Id(s): ERIERL-590, PR-5479
*** HIGHLIGHT ***
Added support for the compile attribute -nifs() to
empower compiler and loader with information about
which functions may be overridden as NIFs by
erlang:load_nif/2. It is recommended to use this
attribute in all modules that load NIF libraries.
OTP-17224 Application(s): erts, otp
A test case has been added to the otp_SUITE that test
that the dependency versions for OTP's applications are
correct. The test case uses xref to check if the used
functions are available in the specified dependency
versions. The test case depends on the Erlang/OTP
team's testing infrastructure and will be skipped if
its dependencies are not met.
OTP-17304 Application(s): erts, kernel, sasl
An Erlang installation directory is now relocatable on
the file system given that the paths in the
installation's RELEASES file are paths that are
relative to the installations root directory. The
`release_handler:create_RELEASES/4 function can
generate a RELEASES file with relative paths if its
RootDir parameter is set to the empty string.
OTP-17318 Application(s): erl_interface, erts, jinterface,
kernel
Related Id(s): PR-4972
The following distribution flags are now mandatory:
DFLAG_BIT_BINARIES, DFLAG_EXPORT_PTR_TAG,
DFLAG_MAP_TAGS, DFLAG_NEW_FLOATS, and DFLAG_FUN_TAGS.
This mainly concerns libraries or application that
implement the distribution protocol themselves.
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17504 Application(s): compiler, erts
Related Id(s): GH-4971, PR-5281, PR-5752
*** HIGHLIGHT ***
When binary construction using the binary syntax fails,
the error message printed in the shell and by
erl_error:format_exception/3,4 will contain more
detailed information about what went wrong.
OTP-17554 Application(s): debugger, erts, kernel, observer,
stdlib
Related Id(s): GH-5016, OTP-17821, PR-5408
The configuration files .erlang, .erlang.cookie and
.erlang.crypt can now be located in the XDG Config Home
directory.
See the documentation for each file and
filename:basedir/2 for more details.
OTP-17555 Application(s): erts
Related Id(s): PR-5027
Make byte_size/1 and binary_part/2/3 callable from
match specs (in ETS and tracing).
OTP-17558 Application(s): erts, kernel
Related Id(s): GH-5402, OTP-17538, PR-5111
Dynamic node name improvements: erlang:is_alive/0
changed to return true for pending dynamic node name
and new function net_kernel:get_state/0.
OTP-17562 Application(s): erts
Related Id(s): GH-4492
A new option called short has been added to the
functions erlang:float_to_list and
erlang:float_to_binary. This option creates the
shortest correctly rounded string representation of the
given float that can be converted back to the same
float again.
OTP-17608 Application(s): erts, kernel, stdlib
The tagged tuple tests and fun-calls have been
optimized and are now a little bit cheaper than
previously.
These optimizations become possible after making sure
that all boxed terms have at least one word allocated
after the arity word. This has been accomplished by
letting all empty tuples refer to the same empty tuple
literal which also reduces memory usage for empty
tuples.
OTP-17630 Application(s): erts, stdlib
The signal queue benchmark in parallel_messages_SUITE
and the ETS benchmark in ets_SUITE have benchmark
result visualization HTML pages with "fill-screen"
buttons to make the graphs bigger. This button did not
work as intended before. When pressing the button for a
graph, the last graph got replaced with a bigger
version and not the one over the button. This is now
fixed.
OTP-17636 Application(s): erts
The test case num_bif_SUITE:t_float_to_string
previously failed sometimes as it assumed a certain
rounding of floats printed with sprintf but the
rounding type is platform specific.
OTP-17660 Application(s): erts
Related Id(s): PR-5164
Optimize interpreter to create heap binaries of small
match contexts if possible.
This optimization was already done in the JIT.
OTP-17667 Application(s): erts
Related Id(s): PR-5237
Optimize integer multiplication for x86 JIT
OTP-17682 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-5347
Removed use of node creation value zero as a wildcard.
Also prevent zero from being used as creation by
erl_interface and jinterface nodes.
OTP-17683 Application(s): erts
Related Id(s): PR-5306
*** POTENTIAL INCOMPATIBILITY ***
Distributed spawn operations now require distributed
spawn_request() support. Distributed spawn_request()
was introduced in OTP 23. That is, distributed spawn
operations against Erlang nodes of releases prior to
OTP 23 will fail.
OTP-17684 Application(s): compiler, erts
Related Id(s): PR-5316, PR-5664
*** HIGHLIGHT ***
The Erlang compiler now includes type information in
BEAM files, and the JIT can now use that type
information to do optimizations such as eliminating or
simplifying type tests.
OTP-17685 Application(s): compiler, erts
Improved the JIT's support for external tools like perf
and gdb, allowing them to show line numbers and even
the original Erlang source code when that can be found.
To aid them in finding the source code, the
absolute_path compiler option has been added to embed
the absolute file path of a module.
OTP-17717 Application(s): erts
Related Id(s): PR-5290
Add [32-bit] to the Erlang shell title row for 32-bit
VMs.
OTP-17728 Application(s): erts
Related Id(s): PR-5284
Instructions for how to build the runtime system for
iOS/iPadOS can now be found in HOWTO/INSTALL.md.
OTP-17729 Application(s): erts
Related Id(s): PR-5477
Add support for static Elixir NIF modules with
non-alphanumeric characters by using new macro
STATIC_ERLANG_NIF_LIBNAME.
OTP-17753 Application(s): erts
Related Id(s): GH-5297, PR-5305
Add new function caller_line to for trace match
specifications used by erlang:trace_pattern/3.
This new option puts the line number of the caller into
the trace message sent to the trace receiver.
OTP-17762 Application(s): erts
Related Id(s): GH-5204, PR-5219
A new erl command line argument +ssrct has been
introduced which will cause the runtime system to skip
reading CPU topology information. This reduce startup
time especially when the CPU topology is large. Reading
of CPU topology information is now also skipped if a
user defined CPU topology is set using the +sct command
line argument.
OTP-17772 Application(s): erts
Related Id(s): GH-4965, PR-5644
The default time warp mode will change in Erlang/OTP
26. Added a warning about this upcoming potential
incompatibility to the documentation.
OTP-17824 Application(s): erts
The emulator will no longer mark unused memory as
discardable (e.g. through madvise(2)), as it caused
more problems than it solved.
OTP-17841 Application(s): compiler, erts
Related Id(s): PR-5694
*** HIGHLIGHT ***
When a record matching or record update fails, a
{badrecord,ExpectedRecordTag} exception used to be
raised. In this release, the exception has been changed
to {badrecord,ActualValue}, where ActualValue is the
actual that was found instead of the expected record.
OTP-17892 Application(s): erts, tools
Related Id(s): PR-5591
Removed the previously undocumented and unsupported
emem tool.
OTP-17899 Application(s): erts
Related Id(s): PR-5524
Remove version number from the default install path on
Windows.
OTP-17927 Application(s): erts
Related Id(s): PR-5283
On Windows apply the limit flag
JOB_OBJECT_LIMIT_BREAKAWAY_OK in the Erlang service to
be able to start a OS child process with a different
session number.
OTP-17945 Application(s): erts
Related Id(s): GH-4759, PR-5809
New erl command line option +IOs. It can be used to
disable scheduler thread poll optimization, which has
been seen to cause degraded event latency in some use
cases.
OTP-17951 Application(s): erts, kernel
Related Id(s): PR-5656
An API for multihomed SCTP connect has been added in
the guise of gen_sctp:connectx_init/*
OTP-17968 Application(s): erts, kernel
Related Id(s): OTP-16464
[socket] Add encoding of the field hatype of the type
sockaddr_ll (family 'packet').
OTP-17985 Application(s): erts
Related Id(s): GH-5728
A cross compilation issue has been fixed about finding
libdlpi during the configure phase.
OTP-17999 Application(s): erts
Related Id(s): PR-5768
process_info/2 now also accepts parent as argument.
When passed, the process identifier of the parent
process will be returned.
OTP-18033 Application(s): erts
Related Id(s): GH-5376, PR-2926
The exported type erlang:send_destination/0 has been
introduced.
OTP-18036 Application(s): erts
Related Id(s): PR-5846
Building of the C/C++ make dependencies on Windows has
been optimized to be a lot faster.
OTP-18038 Application(s): erts
file:sync/1 will now use the F_BARRIERFSYNC flag when
available on Mac OS.
Full runtime dependencies of erts-13.0: kernel-8.3, sasl-3.3,
stdlib-4.0
---------------------------------------------------------------------
--- eunit-2.7.1 -----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17884 Application(s): eunit
Related Id(s): GH-5617
Minor internal improvements.
Full runtime dependencies of eunit-2.7.1: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- inets-8.0 -------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17627 Application(s): inets, stdlib
*** POTENTIAL INCOMPATIBILITY ***
Adjust uri_string:normalize behavior for URIs with
undefined port (URI string with a port colon but no
port value or URI map with port => undefined).
Remove redundant normalization from http_request
module.
Before this change, normalize would not remove port
subcomponent in such cases and could for example return
"http://localhost:" URI.
OTP-17889 Application(s): inets
*** POTENTIAL INCOMPATIBILITY ***
Fixed typo in Reason term returned from
httpc_handler:handle_http_body.
After this change, could_not_establish_ssl_tunnel atom
is returned within Reason term.
--- Improvements and New Features ---
OTP-17866 Application(s): inets
*** POTENTIAL INCOMPATIBILITY ***
This change removes deprecated functions:
http_uri:parse/1, http_uri:parse/2 and
http_uri:scheme_defaults/0.
This change delays until OTP-26 removal of deprecated
functions: http_uri:encode/1 and http_uri:decode/1.
This change marks httpd_util:decode_hex/1 and
httpd_util:encode_hex/1 as deprecated.
OTP-17997 Application(s): inets
Related Id(s): GH-5782
After this change, connect_timeout value is re-used
when upgrading TCP connection to TLS over a proxy.
Full runtime dependencies of inets-8.0: erts-6.0, kernel-6.0,
mnesia-4.12, runtime_tools-1.8.14, ssl-9.0, stdlib-4.0
---------------------------------------------------------------------
--- jinterface-1.13 -------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17318 Application(s): erl_interface, erts, jinterface,
kernel
Related Id(s): PR-4972
The following distribution flags are now mandatory:
DFLAG_BIT_BINARIES, DFLAG_EXPORT_PTR_TAG,
DFLAG_MAP_TAGS, DFLAG_NEW_FLOATS, and DFLAG_FUN_TAGS.
This mainly concerns libraries or application that
implement the distribution protocol themselves.
OTP-17682 Application(s): erl_interface, erts, jinterface
Related Id(s): PR-5347
Removed use of node creation value zero as a wildcard.
Also prevent zero from being used as creation by
erl_interface and jinterface nodes.
OTP-17961 Application(s): jinterface
Related Id(s): PR-4839
Add new abstract class OtpGenericTransportFactory to
allow implementation of any transport protocol without
dependency on epmd.
---------------------------------------------------------------------
--- kernel-8.4 ------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17323 Application(s): kernel
The DNS resolver implementation has been rewritten to
validate replies more thoroughly, and a bit optimized
to create less garbage.
OTP-17447 Application(s): erts, kernel
Related Id(s): GH-4819
The socket option 'reuseaddr' is *no longer* ignored on
Windows.
OTP-17551 Application(s): kernel
Related Id(s): GH-5071, PR-5075
Fix bug where using the atoms string or report as the
format when calling logger:log(Level, Format, Args) (or
any other logging function) would cause a crash or
incorrect logging.
OTP-17911 Application(s): kernel
Related Id(s): OTP-17843, PR-5611, PR-5687
*** HIGHLIGHT ***
*** POTENTIAL INCOMPATIBILITY ***
As of OTP 25, global will by default prevent
overlapping partitions due to network issues by
actively disconnecting from nodes that reports that
they have lost connections to other nodes. This will
cause fully connected partitions to form instead of
leaving the network in a state with overlapping
partitions.
Prevention of overlapping partitions can be disabled
using the prevent_overlapping_partitions kernel(6)
parameter, making global behave like it used to do.
This is, however, problematic for all applications
expecting a fully connected network to be provided,
such as for example mnesia, but also for global itself.
A network of overlapping partitions might cause the
internal state of global to become inconsistent. Such
an inconsistency can remain even after such partitions
have been brought together to form a fully connected
network again. The effect on other applications that
expects that a fully connected network is maintained
may vary, but they might misbehave in very subtle hard
to detect ways during such a partitioning. Since you
might get hard to detect issues without this fix, you
are strongly advised not to disable this fix. Also note
that this fix has to be enabled on all nodes in the
network in order to work properly.
OTP-17958 Application(s): kernel
Related Id(s): OTP-17978
Starting the helper program for name resolving;
inet_gethost, has been improved to use an absolute file
system path to ensure that the right program is
started.
If the helper program can not be started - the system
now halts, to avoid running with a silently broken name
resolver.
OTP-17986 Application(s): kernel
Related Id(s): PR-5412
The type specification for inet_res:getbyname/2,3 has
been corrected to reflect that it can return peculiar
#hostent{} records.
OTP-17990 Application(s): kernel
Related Id(s): GH-5801
code:module_status/1 would always report BEAM files
loaded from an archive as modified, and
code:modified_modules/0 would always return the name of
all modules loaded from archives.
OTP-18001 Application(s): kernel
Related Id(s): GH-5780, PR-5829
In logger fix file handler shutdown delay by using
erlang timers instead of the timer modul's timers.
OTP-18003 Application(s): kernel
Related Id(s): PR-5771
Fix the metadata in log events generated by logger on
failure to not contain the original log event's
metadata.
OTP-18015 Application(s): kernel
Related Id(s): GH-5828, PR-5845
Fix logger file backend to re-create the log folder if
it has been deleted.
OTP-18020 Application(s): erts, kernel
[socket] Encode of sockaddr has been improved.
--- Improvements and New Features ---
OTP-16464 Application(s): erts, kernel
The net module now works on Windows.
OTP-17304 Application(s): erts, kernel, sasl
An Erlang installation directory is now relocatable on
the file system given that the paths in the
installation's RELEASES file are paths that are
relative to the installations root directory. The
`release_handler:create_RELEASES/4 function can
generate a RELEASES file with relative paths if its
RootDir parameter is set to the empty string.
OTP-17318 Application(s): erl_interface, erts, jinterface,
kernel
Related Id(s): PR-4972
The following distribution flags are now mandatory:
DFLAG_BIT_BINARIES, DFLAG_EXPORT_PTR_TAG,
DFLAG_MAP_TAGS, DFLAG_NEW_FLOATS, and DFLAG_FUN_TAGS.
This mainly concerns libraries or application that
implement the distribution protocol themselves.
OTP-17479 Application(s): kernel
Related Id(s): PR-4917
Fix os:cmd to work on Android OS.
OTP-17554 Application(s): debugger, erts, kernel, observer,
stdlib
Related Id(s): GH-5016, OTP-17821, PR-5408
The configuration files .erlang, .erlang.cookie and
.erlang.crypt can now be located in the XDG Config Home
directory.
See the documentation for each file and
filename:basedir/2 for more details.
OTP-17558 Application(s): erts, kernel
Related Id(s): GH-5402, OTP-17538, PR-5111
Dynamic node name improvements: erlang:is_alive/0
changed to return true for pending dynamic node name
and new function net_kernel:get_state/0.
OTP-17589 Application(s): kernel
Related Id(s): PR-4926
The types for callback result types in gen_statem has
bee augmented with arity 2 types where it is possible
for a callback module to specify the type of the
callback data, so the callback module can get type
validation of it.
OTP-17608 Application(s): erts, kernel, stdlib
The tagged tuple tests and fun-calls have been
optimized and are now a little bit cheaper than
previously.
These optimizations become possible after making sure
that all boxed terms have at least one word allocated
after the arity word. This has been accomplished by
letting all empty tuples refer to the same empty tuple
literal which also reduces memory usage for empty
tuples.
OTP-17617 Application(s): kernel
Related Id(s): PR-5069
A net_ticker_spawn_options kernel configuration
parameter with which one can set spawn options for the
distribution channel ticker processes has been
introduced.
OTP-17681 Application(s): kernel
Related Id(s): PR-5307
*** POTENTIAL INCOMPATIBILITY ***
The most, or at least the most used, rpc operations now
require erpc support in order to communicate with other
Erlang nodes. erpc was introduced in OTP 23. That is,
rpc operations against Erlang nodes of releases prior
to OTP 23 will fail.
OTP-17720 Application(s): common_test, kernel, stdlib
Related Id(s): PR-5162
*** HIGHLIGHT ***
The new module peer supersedes the slave module. The
slave module is now deprecated and will be removed in
OTP 27.
peer contains an extended and more robust API for
starting erlang nodes.
OTP-17784 Application(s): kernel, stdlib
Related Id(s): PR-5792
*** HIGHLIGHT ***
In order to make it easier for the user to manage
multiple outstanding asynchronous call requests, new
functionality utilizing request identifier collections
have been introduced in erpc, gen_server, gen_statem,
and gen_event.
OTP-17915 Application(s): kernel, stdlib
Related Id(s): GH-2375, GH-2690, PR-5751
Type specifications have been added to the gen_server,
and the documentation has been updated to utilize this.
This surfaced a few type violations that has been
corrected in global, logger_olp and rpc.
OTP-17923 Application(s): kernel
Related Id(s): PR-5646
IP address validation functions is_ipv4_address/1,
is_ipv6_address/1 and is_ip_address/1 have been added
to the module inet in Kernel.
OTP-17951 Application(s): erts, kernel
Related Id(s): PR-5656
An API for multihomed SCTP connect has been added in
the guise of gen_sctp:connectx_init/*
OTP-17968 Application(s): erts, kernel
Related Id(s): OTP-16464
[socket] Add encoding of the field hatype of the type
sockaddr_ll (family 'packet').
OTP-17988 Application(s): compiler, kernel, stdlib, syntax_tools
*** HIGHLIGHT ***
Added support for selectable features as described in
EEP-60. Features can be enabled/disabled during
compilation with options (ordinary and +term) to erlc
as well as with directives in the file. Similar options
can be used to erl for enabling/disabling features
allowed at runtime. The new maybe expression (EEP-49)
is fully supported as the feature maybe_expr.
Full runtime dependencies of kernel-8.4: crypto-5.0, erts-13.0,
sasl-3.0, stdlib-4.0
---------------------------------------------------------------------
--- megaco-4.4 ------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17910 Application(s): megaco
Megaco test suite(s) use the new peer module for node
starts.
Full runtime dependencies of megaco-4.4: asn1-3.0, debugger-4.0,
erts-12.0, et-1.5, kernel-8.0, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- mnesia-4.21 -----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17930 Application(s): mnesia
Documentation fixes.
Full runtime dependencies of mnesia-4.21: erts-9.0, kernel-5.3,
stdlib-3.4
---------------------------------------------------------------------
--- observer-2.12 ---------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17996 Application(s): observer
Related Id(s): PR-5795
Fixed default handling of Mac specific menus.
OTP-18012 Application(s): observer, runtime_tools
Related Id(s): #5798
Reading port socket options on macOS and Windows
"skips" invalid options.
--- Improvements and New Features ---
OTP-17554 Application(s): debugger, erts, kernel, observer,
stdlib
Related Id(s): GH-5016, OTP-17821, PR-5408
The configuration files .erlang, .erlang.cookie and
.erlang.crypt can now be located in the XDG Config Home
directory.
See the documentation for each file and
filename:basedir/2 for more details.
Full runtime dependencies of observer-2.12: erts-11.0, et-1.5,
kernel-8.1, runtime_tools-1.19, stdlib-3.13, wx-1.2
---------------------------------------------------------------------
--- odbc-2.14 -------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
Full runtime dependencies of odbc-2.14: erts-6.0, kernel-3.0,
stdlib-2.0
---------------------------------------------------------------------
--- parsetools-2.4 --------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17755 Application(s): parsetools
In the generated code, yecc will now quote all atoms
coming from terminals in the grammar, in order to avoid
conflicts with future reserved words.
Full runtime dependencies of parsetools-2.4: erts-6.0, kernel-3.0,
stdlib-3.4
---------------------------------------------------------------------
--- public_key-1.13 -------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17890 Application(s): public_key, ssl
Allow key file passwords to be input as a single
binary, that is we change the datatype to be the more
for the purpose logical data type iodata() instead of
string().
OTP-17921 Application(s): public_key
*** POTENTIAL INCOMPATIBILITY ***
The deprecated public_key functions ssh_decode/2,
ssh_encode/2, ssh_hostkey_fingerprint/1 and
ssh_hostkey_fingerprint/2 are removed.
They are replaced by ssh_file:decode/2,
ssh_file:encode/2, ssh:hostkey_fingerprint/1 and
ssh:hostkey_fingerprint/2 respectively.
Note that the decode/2 and encode/2 are not exact
replacement functions, some minor changes may be
needed. Se the manual for more information.
Full runtime dependencies of public_key-1.13: asn1-3.0, crypto-4.6,
erts-6.0, kernel-3.0, stdlib-3.5
---------------------------------------------------------------------
--- runtime_tools-1.19 ----------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-18012 Application(s): observer, runtime_tools
Related Id(s): #5798
Reading port socket options on macOS and Windows
"skips" invalid options.
--- Improvements and New Features ---
OTP-17909 Application(s): runtime_tools
Related Id(s): ERIERL-760
dbg:stop/0 now behaves like dbg:stop_clear/0, clearing
all global trace patterns for all functions.
OTP-17939 Application(s): runtime_tools
erts_alloc_config has been scheduled for removal in OTP
26. It has not produced good configurations for a very
long time, and unfortunately it cannot be fixed in a
backwards compatible manner.
Full runtime dependencies of runtime_tools-1.19: erts-11.0,
kernel-8.1, mnesia-4.12, stdlib-3.13
---------------------------------------------------------------------
--- sasl-4.2 --------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17752 Application(s): sasl
Related Id(s): PR-5302
Fix systools:make* to recursively search for source
code when doing a src_tests.
--- Improvements and New Features ---
OTP-17304 Application(s): erts, kernel, sasl
An Erlang installation directory is now relocatable on
the file system given that the paths in the
installation's RELEASES file are paths that are
relative to the installations root directory. The
`release_handler:create_RELEASES/4 function can
generate a RELEASES file with relative paths if its
RootDir parameter is set to the empty string.
Full runtime dependencies of sasl-4.2: erts-10.2, kernel-6.0,
stdlib-3.4, tools-2.6.14
---------------------------------------------------------------------
--- snmp-5.13 -------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17612 Application(s): snmp
Removed deprecated functions slated for removal in
OTP-25. Also removed "dead" code, kept for backward
compatibility reasons.
Full runtime dependencies of snmp-5.13: crypto-4.6, erts-12.0,
kernel-8.0, mnesia-4.12, runtime_tools-1.8.14, stdlib-2.5
---------------------------------------------------------------------
--- ssh-4.14 --------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17920 Application(s): ssh
*** POTENTIAL INCOMPATIBILITY ***
The representation of Edward curves (ed25519 and ed448)
inside ssh had a temporary representation (ed_pri and
ed_pub).
That is now changed to the public_key form. See the
manual for more information.
Full runtime dependencies of ssh-4.14: crypto-5.0, erts-11.0,
kernel-6.0, public_key-1.6.1, runtime_tools-1.15.1, stdlib-3.15
---------------------------------------------------------------------
--- ssl-10.8 --------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-18014 Application(s): ssl
Now also accepts the signature_algs_cert option in
TLS-1.2 configuration.
--- Improvements and New Features ---
OTP-15993 Application(s): ssl
Related Id(s): GH-4143
With this change, it is possible to provide several
certificates. Most appropriate will be selected based
on extensions.
OTP-17855 Application(s): ssl
Related Id(s): PR-5328
Add options for users to be able to set spawn_opts for
TLS processes (sender and receiver) this may be useful
for tuning trade-offs between CPU and Memory usage.
OTP-17890 Application(s): public_key, ssl
Allow key file passwords to be input as a single
binary, that is we change the datatype to be the more
for the purpose logical data type iodata() instead of
string().
OTP-18000 Application(s): ssl
Related Id(s): PR-5790
Logging enhancement, add location information to the
warning log message.
Full runtime dependencies of ssl-10.8: crypto-5.0, erts-10.0,
inets-5.10.7, kernel-8.4, public_key-1.11.3, runtime_tools-1.15.1,
stdlib-3.12
---------------------------------------------------------------------
--- stdlib-4.0 ------------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17370 Application(s): stdlib
Related Id(s): GH-4784
Improve the Erlang code linter's check of unused types.
OTP-17480 Application(s): stdlib
Related Id(s): GH-4853, PR-4872
Fix race condition in proc_lib:stop/3 where the process
is not stopped when the timeout given is very short.
OTP-17518 Application(s): stdlib
Related Id(s): GH-4915
Maps are now fully supported in by ms_transform.
OTP-17544 Application(s): stdlib
Related Id(s): PR-5008
*** POTENTIAL INCOMPATIBILITY ***
Fix gen_server:call with the first argument as self()
to throw an error instead of failing with a timeout.
The same fix has also been done for gen_statem:call/3,
gen_event:sync_notify/2 and any other functionality
relying on the internal gen:call/3 function.
A similar fix was also done when using io:format/2 and
the current group_leader was set to the current
process.
OTP-17566 Application(s): stdlib
Related Id(s): GH-5093, PR-5095
erl_pp printed unary - and + operators with a space
between the operator and the operand. This is fixed by
not having any space in between.
OTP-17627 Application(s): inets, stdlib
*** POTENTIAL INCOMPATIBILITY ***
Adjust uri_string:normalize behavior for URIs with
undefined port (URI string with a port colon but no
port value or URI map with port => undefined).
Remove redundant normalization from http_request
module.
Before this change, normalize would not remove port
subcomponent in such cases and could for example return
"http://localhost:" URI.
OTP-17661 Application(s): erts, stdlib
Related Id(s): PR-5165
Fix reduction counting bug in re:run that caused the
function to yield too frequently when doing global
matches.
OTP-17832 Application(s): erts, stdlib
Related Id(s): PR-5494
Fix the memory value returned from ets:info(Tid,memory)
when the read_concurrency option is used.
Before this fix the memory used by the scheduler
specific lock cache lines was not counted towards the
total. This caused the returned memory usage to be very
incorrect on systems with many schedulers for tables
with man locks.
OTP-17878 Application(s): stdlib
Avoid confusion by correcting the argument order in the
gen_event crash log printout.
OTP-18009 Application(s): stdlib
Related Id(s): PR-5785
*** POTENTIAL INCOMPATIBILITY ***
Fixed string:next_grapheme/1 to return an empty binary
in the tail for binary input for the last grapheme
cluster.
OTP-18034 Application(s): stdlib
Related Id(s): GH-4622, PR-4661
Fixed type specifications of the supervisor:sup_name/0
and supervisor:sup_ref/0 types.
--- Improvements and New Features ---
OTP-15991 Application(s): erts, stdlib
Related Id(s): PR-5208
*** HIGHLIGHT ***
Users can now configure ETS tables with the
{write_concurrency, auto} option. This option forces
tables to automatically change the number of locks that
are used at run-time depending on how much concurrency
is detected. The {decentralized_counters, true} option
is enabled by default when {write_concurrency, auto} is
active.
Benchmark results comparing this option with the other
ETS optimization options are available here:
https://erlang.org/bench/ets_bench_result_lock_config.html
OTP-17351 Application(s): stdlib
Related Id(s): GH-4673, PR-4952
*** HIGHLIGHT ***
The format_status/2 callback for gen_server, gen_statem
and gen_event has been deprecated in favor of the new
format_status/1 callback.
The new callback adds the possibility to limit and
change many more things than the just the state, such
as the last received message, the reason for
terminating and more events specific to each type of
behavior. See the respective modules documentation for
more details.
OTP-17481 Application(s): stdlib
Related Id(s): PR-4811
*** HIGHLIGHT ***
The timer module has been modernized and made more
efficient, which makes the timer server less
susceptible to being overloaded. The timer:sleep/1
function now accepts an arbitrarily large integer.
OTP-17523 Application(s): stdlib
Related Id(s): PR-4928
Add lists:enumerate/[1,2].
OTP-17554 Application(s): debugger, erts, kernel, observer,
stdlib
Related Id(s): GH-5016, OTP-17821, PR-5408
The configuration files .erlang, .erlang.cookie and
.erlang.crypt can now be located in the XDG Config Home
directory.
See the documentation for each file and
filename:basedir/2 for more details.
OTP-17592 Application(s): stdlib
Related Id(s): ERIERL-663, PR-5243
Support native time unit in calendar functions
system_time_to_rfc3339/2 and rfc3339_to_system_time.
OTP-17608 Application(s): erts, kernel, stdlib
The tagged tuple tests and fun-calls have been
optimized and are now a little bit cheaper than
previously.
These optimizations become possible after making sure
that all boxed terms have at least one word allocated
after the arity word. This has been accomplished by
letting all empty tuples refer to the same empty tuple
literal which also reduces memory usage for empty
tuples.
OTP-17630 Application(s): erts, stdlib
The signal queue benchmark in parallel_messages_SUITE
and the ETS benchmark in ets_SUITE have benchmark
result visualization HTML pages with "fill-screen"
buttons to make the graphs bigger. This button did not
work as intended before. When pressing the button for a
graph, the last graph got replaced with a bigger
version and not the one over the button. This is now
fixed.
OTP-17720 Application(s): common_test, kernel, stdlib
Related Id(s): PR-5162
*** HIGHLIGHT ***
The new module peer supersedes the slave module. The
slave module is now deprecated and will be removed in
OTP 27.
peer contains an extended and more robust API for
starting erlang nodes.
OTP-17778 Application(s): stdlib
Related Id(s): GH-5368
This change introduces quote and unquote functions in
uri_string module - a replacement for deprecated encode
and decode functions from http_uri.
OTP-17784 Application(s): kernel, stdlib
Related Id(s): PR-5792
*** HIGHLIGHT ***
In order to make it easier for the user to manage
multiple outstanding asynchronous call requests, new
functionality utilizing request identifier collections
have been introduced in erpc, gen_server, gen_statem,
and gen_event.
OTP-17869 Application(s): stdlib
Related Id(s): PR-5595
Update to the Unicode 14.0 specification.
OTP-17901 Application(s): stdlib
Related Id(s): GH-4968, PR-5649
The following ets types have been renamed to a clearer
name: tab/0 to table/0 and comp_match_spec/0 to
compiled_match_spec/0.
The types table_access/0 and table_type/0 have been
exported.
OTP-17908 Application(s): stdlib
Related Id(s): GH-5655, PR-5669
Add support for locating .asn1 files to the default
search rules of filelib:find_file/1 and
filelib:find_source/1.
OTP-17915 Application(s): kernel, stdlib
Related Id(s): GH-2375, GH-2690, PR-5751
Type specifications have been added to the gen_server,
and the documentation has been updated to utilize this.
This surfaced a few type violations that has been
corrected in global, logger_olp and rpc.
OTP-17925 Application(s): stdlib
Related Id(s): PR-5631
*** POTENTIAL INCOMPATIBILITY ***
The non-local function handler for the erl_eval can now
be called with either two or three arguments. When
called with three arguments, the first argument is the
annotation for the node in the abstract format.
All errors during evaluation will now be passed through
erlang:raise/3. If the restricted shell is active and
it does not let erlang:raise/3 through, evaluation
errors will be printed in less clear way. See the
documentation for restricted shell in shell.
OTP-17953 Application(s): stdlib
Related Id(s): PR-5621
*** HIGHLIGHT ***
Added filelib:ensure_path/1 that ensures that all
directories for the given path exists (unlike
filelib:ensure_dir/1, which will not create the last
segment of the path).
OTP-17969 Application(s): stdlib
Related Id(s): PR-5588
*** HIGHLIGHT ***
The functions groups_from_list/2 and groups_from_list/3
have been added to the maps module.
OTP-17974 Application(s): stdlib
Related Id(s): GH-5683
gen_server has been refactored to throw more readable
exceptions when a callback returns bad values in the
Timeout field (timeout() | 'hibernate' |
{'continue,_}), and also to verify that argument in the
gen_server:enter_loop/3,4,5 API function.
OTP-17977 Application(s): stdlib
Related Id(s): GH-5606, PR-5766
*** HIGHLIGHT ***
The functions uniq/1 and uniq/2 for removing duplicates
have been added to the lists module.
OTP-17988 Application(s): compiler, kernel, stdlib, syntax_tools
*** HIGHLIGHT ***
Added support for selectable features as described in
EEP-60. Features can be enabled/disabled during
compilation with options (ordinary and +term) to erlc
as well as with directives in the file. Similar options
can be used to erl for enabling/disabling features
allowed at runtime. The new maybe expression (EEP-49)
is fully supported as the feature maybe_expr.
OTP-17991 Application(s): stdlib
*** POTENTIAL INCOMPATIBILITY ***
The function filename:safe_relative_path/1, which has
been deprecated since OTP 25, has been removed. Use
filelib:safe_relative_path/2 instead.
OTP-18011 Application(s): stdlib
Two ancient well-known PRNG:s have been added to the
rand module: mcg35 and lcg35. These are intended for
applications that need really fast pseudo-random
numbers and are not sensitive to lesser quality ones.
Two internal functions for the exsp generator have also
been exported so they can be used outside the rand
plug-in framework to shave off some overhead.
The internal splitmix64 generator has also been
exported which can be useful for seeding other kinds of
PRNG:s than its own.
Full runtime dependencies of stdlib-4.0: compiler-5.0, crypto-4.5,
erts-12.0, kernel-8.4, sasl-3.0
---------------------------------------------------------------------
--- syntax_tools-3.0 ------------------------------------------------
---------------------------------------------------------------------
--- Fixed Bugs and Malfunctions ---
OTP-17894 Application(s): syntax_tools
Related Id(s): PR-5509
*** POTENTIAL INCOMPATIBILITY ***
The erl_syntax_lib:analyze_attribute/1 function would
return {Name, {Name, Value}} instead of {Name, Value}
(which is the documented return value).
--- Improvements and New Features ---
OTP-17988 Application(s): compiler, kernel, stdlib, syntax_tools
*** HIGHLIGHT ***
Added support for selectable features as described in
EEP-60. Features can be enabled/disabled during
compilation with options (ordinary and +term) to erlc
as well as with directives in the file. Similar options
can be used to erl for enabling/disabling features
allowed at runtime. The new maybe expression (EEP-49)
is fully supported as the feature maybe_expr.
Full runtime dependencies of syntax_tools-3.0: compiler-7.0,
erts-9.0, kernel-5.0, stdlib-4.0
---------------------------------------------------------------------
--- tools-3.5.3 -----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17892 Application(s): erts, tools
Related Id(s): PR-5591
Removed the previously undocumented and unsupported
emem tool.
Full runtime dependencies of tools-3.5.3: compiler-5.0, erts-11.0,
erts-9.1, kernel-5.4, runtime_tools-1.8.14, stdlib-3.4
---------------------------------------------------------------------
--- wx-2.2 ----------------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17414 Application(s): common_test, crypto, erl_interface,
erts, megaco, odbc, otp, snmp, wx
Related Id(s): PR-4967
Input for configure scripts adapted to autoconf 2.71.
OTP-17950 Application(s): wx
*** POTENTIAL INCOMPATIBILITY ***
Added aux1Down and aux2Down fields to the wxMouseState
record. Since one record have been changed a
recompilation of user code might be required.
OTP-18008 Application(s): wx
Related Id(s): PR-5816
Add mac specific menubar functions.
Full runtime dependencies of wx-2.2: erts-12.0, kernel-8.0,
stdlib-3.15
---------------------------------------------------------------------
--- xmerl-1.3.29 ----------------------------------------------------
---------------------------------------------------------------------
--- Improvements and New Features ---
OTP-17935 Application(s): xmerl
Related Id(s): PR-5590
Fixed misspellings in both documentation, comments and
code (internal data structures).
Full runtime dependencies of xmerl-1.3.29: erts-6.0, kernel-3.0,
stdlib-2.5
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