| Initial Release | OTP 25.0 |
| Git Tag | OTP-25.0 |
| Date | 2022-05-18 |
| Issue Id |
ERIERL-590
ERIERL-663
ERIERL-728
ERIERL-760
ERIERL-792
ERIERL-798
|
| System | OTP |
| Release | 25 |
| Application |
|
| Potential Incompatibilities |
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-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 negotiated properties.
- 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
-
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
-
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
-
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(maybe_expr, enable). 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-17798
-
- Application(s):
- public_key
- Related Id(s):
- GH-5760
Added functions to retrieve OS provided CA-certs.
- 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
-
*** 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
-
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 configurable features as described in EEP-60. Features can be enabled/disabled during compilation with options (-enable-feature Feature, -disable-feature Feature and +{feature, Feature, enable|disable}) to erlc as well as with directives (-feature(Feature, enable|disable).) 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. The features support is documented in the reference manual.
- OTP-18011
-
- Application(s):
- stdlib
A new PRNG have been added to the rand module: mwc59 which has been developed in collaboration with Sebastiano Vigna. It is intended for applications that need really fast pseudo-random numbers, and it comes with two output value scramblers, one fast and one thorough.
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.
- OTP-18086
-
- Application(s):
- crypto
- Related Id(s):
- OTP-16282 , OTP-16643 , OTP-16644 , OTP-17701 , OTP-17702 , OTP-17704
The cryptolib API deprecated in OpenSSL 3.0 is now no longer used with a few exceptions listed below.
Although OpenSSL 3.0.x itself is stable, its usage in OTP/crypto should still not be considered suitable for production code.
The use of ENGINEs is still disabled by default when using 3.0.
Deprecated functions are still called in the otp_test_engine.c (only used in tests), in mac.c (EVP_PKEY_new_CMAC_key) and five function calls in ec.c (EVP_PKEY_assign, EC_KEY_get_conv_form, EVP_PKEY_get1_EC_KEY, EC_KEY_get0_group and EC_KEY_set_public_key).
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
-
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
-
*** 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 information 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 maintainer 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 #
- 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 #
- 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 #
- OTP-17881
-
- Application(s):
- common_test
- Related Id(s):
- PR-5581
Fix bug when running parallel test cases and together with one or more ct hooks that would cause the hook lock process to crash and produce printouts in the ct logs.
- 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 #
- 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-17820
-
- Application(s):
- compiler
Fixed a rare bug that would crash the compiler during type optimization.
- OTP-17860
-
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.
- OTP-18083
-
- Application(s):
- compiler, stdlib
If a default record field initialization (_ = Expr) was used even though all records fields were explicitly initialized, Expr would not be evaluated. That would not be a problem, except when Expr would bind a variable subsequently used, in which case the compiler would crash.
As an example, if record #r{} is defined to have only one field a, the following code would crash the compiler:
#r{a=[],_=V=42}, V
To fix that problem, the compiler will make sure that Expr is always evaluated at least once. The compiler will now rewrite the example to essentially:
V=42, #r{a=[]}, V
- 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
-
*** 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
-
*** 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(maybe_expr, enable). inside the module.
- 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 configurable features as described in EEP-60. Features can be enabled/disabled during compilation with options (-enable-feature Feature, -disable-feature Feature and +{feature, Feature, enable|disable}) to erlc as well as with directives (-feature(Feature, enable|disable).) 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. The features support is documented in the reference manual.
Full runtime dependencies of compiler-8.2: crypto-5.1, erts-13.0, kernel-8.4, stdlib-4.0
crypto-5.1 #
- OTP-17858
-
- Application(s):
- crypto
- Related Id(s):
- ERIERL-728
Fix timing bug in ensure_engine_loaded
When two ensure_engine_loaded() calls were done in parallel there was a possibility that a crypto lib function was called by both instead of just one of them which resulted in an error. This is solved by moving the implementation from erlang down into a NIF function that uses a mutex to protect the sensitive part.
- OTP-17984
-
- Application(s):
- crypto
Remove faulty types run_time_error() and descriptive_error().
- 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-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 information 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 maintainer 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-18067
-
- Application(s):
- crypto
- Related Id(s):
- PR-5866
Add Output Feedback mode (OFB) support for AES encryption / decryption for key sizes of 128, 192 and 256 bits.
- OTP-18086
-
- Application(s):
- crypto
- Related Id(s):
- OTP-16282 , OTP-16643 , OTP-16644 , OTP-17701 , OTP-17702 , OTP-17704
*** HIGHLIGHT ***
The cryptolib API deprecated in OpenSSL 3.0 is now no longer used with a few exceptions listed below.
Although OpenSSL 3.0.x itself is stable, its usage in OTP/crypto should still not be considered suitable for production code.
The use of ENGINEs is still disabled by default when using 3.0.
Deprecated functions are still called in the otp_test_engine.c (only used in tests), in mac.c (EVP_PKEY_new_CMAC_key) and five function calls in ec.c (EVP_PKEY_assign, EC_KEY_get_conv_form, EVP_PKEY_get1_EC_KEY, EC_KEY_get0_group and EC_KEY_set_public_key).
Full runtime dependencies of crypto-5.1: erts-9.0, kernel-5.3, stdlib-3.9
debugger-5.3 #
- 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 #
- 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.
- 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
-
*** 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 #
- 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 #
- OTP-17550
-
Fix unused types warnings in internal edoc module.
- 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 #
- OTP-18084
-
- Application(s):
- erl_docgen
- Related Id(s):
- PR-5948
Fix types that are not derived from code to display the correct information in EEP-48 style documentation chunks.
- 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 #
- 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.
- 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_connect_init and friends, from type short to unsigned int for full 32-bit range.
- 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 #
- 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
-
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-18020
-
- Application(s):
- erts, kernel
[socket] Encode of sockaddr has been improved.
- 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.
- OTP-18068
-
- Application(s):
- erts
- Related Id(s):
- GH-5903
The runtime system would crash when attempting to create more than 33554431 atoms.
- 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
-
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
-
*** 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
-
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
-
*** 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
-
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
-
A new erl command line argument +ssrct has been introduced which will cause the runtime system to skip reading CPU topology information. This reduce start up 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
-
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
-
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-18006
-
- Application(s):
- erts
- Related Id(s):
- PR-5932
Add function attributes to erl_nif and erl_driver APis to improve compiler detection of interface misuse.
- OTP-18033
-
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
inets-8.0 #
- 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.
- OTP-18063
-
- Application(s):
- inets
- Related Id(s):
- ERIERL-798
With this change, inet6fb4 option is documented for inets/httpc. Option can be used when IP family needs to be discovered by a connection attempt.
- 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.
- OTP-18088
-
- Application(s):
- inets
- Related Id(s):
- GH-5276
Remove reference to unsupported Apache-like config file from httpd manual.
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 #
- 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 #
- 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
-
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
-
*** 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
-
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
-
In logger fix file handler shutdown delay by using erlang timers instead of the timer module's timers.
- OTP-18003
-
- Application(s):
- kernel
- Related Id(s):
- PR-5771
Fix the meta data in log events generated by logger on failure to not contain the original log event's meta data.
- OTP-18015
-
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.
- OTP-18070
-
- Application(s):
- kernel
- Related Id(s):
- PR-5885
Fix put_chars requests to the io server with incomplete unicode data to exit with no_translation error.
- 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
-
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
-
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 configurable features as described in EEP-60. Features can be enabled/disabled during compilation with options (-enable-feature Feature, -disable-feature Feature and +{feature, Feature, enable|disable}) to erlc as well as with directives (-feature(Feature, enable|disable).) 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. The features support is documented in the reference manual.
Full runtime dependencies of kernel-8.4: crypto-5.0, erts-13.0, sasl-3.0, stdlib-4.0
megaco-4.4 #
- 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 #
- 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 #
- 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.
- 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
parsetools-2.4 #
- 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 #
- OTP-17798
-
- Application(s):
- public_key
- Related Id(s):
- GH-5760
*** HIGHLIGHT ***
Added functions to retrieve OS provided CA-certs.
- OTP-17890
-
- Application(s):
- public_key, ssl
Allow key file passwords to be input as a single binary, that is we change the data type 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 #
- OTP-18012
-
- Application(s):
- observer, runtime_tools
- Related Id(s):
- #5798
Reading port socket options on macOS and Windows "skips" invalid options.
- 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 #
- OTP-17752
-
- Application(s):
- sasl
- Related Id(s):
- PR-5302
Fix systools:make* to recursively search for source code when doing a src_tests.
- 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 #
- 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 #
- 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.
- OTP-18079
-
- Application(s):
- ssh
- Related Id(s):
- GH-5767
Former internal function ssh_file:extract_public_key/1 documented publicly.
Internally it was previously in ssh_transport.
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 #
- OTP-18087
-
- Application(s):
- ssl
- Related Id(s):
- GH-5961
When a TLS-1.3 enabled client tried to talk to a TLS-1.2 server that coalesces TLS-1.2 handshake message over one TLS record, the connection could fail due to some message being handled in the wrong state, this has been fixed.
- OTP-18092
-
- Application(s):
- ssl
- Related Id(s):
- PR-5959
Fixed tls-1.3 session ticket lifetime which was discarded to quickly before.
- OTP-15993
-
- Application(s):
- ssl
- Related Id(s):
- GH-4143
*** HIGHLIGHT ***
With this change, it is possible to provide several certificates. Most appropriate will be selected based on negotiated properties.
- 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 data type 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.
- OTP-18014
-
- Application(s):
- ssl
Now also accepts the signature_algs_cert option in TLS-1.2 configuration.
- OTP-18045
-
- Application(s):
- ssl
- Related Id(s):
- ERIERL-792 , OTP-15993
Handle certificate selection correctly for server fallback and certificate authorities considerations.
- OTP-18085
-
- Application(s):
- ssl
Enhance handling of handshake decoding errors, especially for certificate authorities extension to ensure graceful termination.
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 #
- OTP-17370
-
- Application(s):
- stdlib
- Related Id(s):
- GH-4784
Improve the Erlang code linter's check of unused types.
- OTP-17480
-
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
-
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
-
Fixed type specifications of the supervisor:sup_name/0 and supervisor:sup_ref/0 types.
- OTP-18083
-
- Application(s):
- compiler, stdlib
If a default record field initialization (_ = Expr) was used even though all records fields were explicitly initialized, Expr would not be evaluated. That would not be a problem, except when Expr would bind a variable subsequently used, in which case the compiler would crash.
As an example, if record #r{} is defined to have only one field a, the following code would crash the compiler:
#r{a=[],_=V=42}, V
To fix that problem, the compiler will make sure that Expr is always evaluated at least once. The compiler will now rewrite the example to essentially:
V=42, #r{a=[]}, V
- 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
-
*** 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
-
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
-
Add support for locating .asn1 files to the default search rules of filelib:find_file/1 and filelib:find_source/1.
- OTP-17915
-
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
-
*** 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 configurable features as described in EEP-60. Features can be enabled/disabled during compilation with options (-enable-feature Feature, -disable-feature Feature and +{feature, Feature, enable|disable}) to erlc as well as with directives (-feature(Feature, enable|disable).) 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. The features support is documented in the reference manual.
- 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
*** HIGHLIGHT ***
A new PRNG have been added to the rand module: mwc59 which has been developed in collaboration with Sebastiano Vigna. It is intended for applications that need really fast pseudo-random numbers, and it comes with two output value scramblers, one fast and one thorough.
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 #
- 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).
- OTP-17988
-
- Application(s):
- compiler, kernel, stdlib, syntax_tools
*** HIGHLIGHT ***
Added support for configurable features as described in EEP-60. Features can be enabled/disabled during compilation with options (-enable-feature Feature, -disable-feature Feature and +{feature, Feature, enable|disable}) to erlc as well as with directives (-feature(Feature, enable|disable).) 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. The features support is documented in the reference manual.
Full runtime dependencies of syntax_tools-3.0: compiler-7.0, erts-9.0, kernel-5.0, stdlib-4.0
wx-2.2 #
- 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