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An external fun could inadvertently suppress warnings for
unused variables, such as in this example:
bug() ->
BugVar = foo(),
if true ->
fun m:f/1
end.
There would be no warning that `BugVar` was unused.
The bug was introduced in ff432e262e652, which was the commit
that extended external funs to allow variables.
https://bugs.erlang.org/browse/ERL-762
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* maint-18:
Updated OTP version
Prepare release
Optimize operator '--' and yield on large inputs
Conflicts:
OTP_VERSION
erts/doc/src/notes.xml
erts/emulator/beam/erl_alloc.types
erts/emulator/beam/erl_bif_lists.c
erts/vsn.mk
lib/stdlib/doc/src/notes.xml
lib/stdlib/vsn.mk
make/otp_version_tickets
otp_versions.table
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* john/erts/OTP-18.3.4/minusminus_trapping/OTP-15371:
Optimize operator '--' and yield on large inputs
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The removal set now uses a red-black tree instead of an array on
large inputs, decreasing runtime complexity from `n*n` to
`n*log(n)`. It will also exit early when there are no more items
left in the removal set, drastically improving performance and
memory use when the items to be removed are present near the head
of the list.
This got a lot more complicated than before as the overhead of
always using a red-black tree was unacceptable when either of the
inputs were small, but this compromise has okay-to-decent
performance regardless of input size.
Co-authored-by: Dmytro Lytovchenko <[email protected]>
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The removal set now uses a red-black tree instead of an array on
large inputs, decreasing runtime complexity from `n*n` to
`n*log(n)`. It will also exit early when there are no more items
left in the removal set, drastically improving performance and
memory use when the items to be removed are present near the head
of the list.
This got a lot more complicated than before as the overhead of
always using a red-black tree was unacceptable when either of the
inputs were small, but this compromise has okay-to-decent
performance regardless of input size.
Co-authored-by: Dmytro Lytovchenko <[email protected]>
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* sverker/erts/ets-select_replace-bug/OTP-15346:
erts: Fix bug in ets:select_replace for bound key
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which may cause following calls to ets:next or ets:prev to fail.
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Note that this does *not* affect -include()'d files or the -file()
directive.
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* rickard/pcre-8.42/OTP-15217:
Update PCRE from version 8.41 to version 8.42
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causing erlang:memory to report too much ets memory.
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uabboli/hb/stdlib/fix_dets_file_name/OTP-15253/ERL-555
stdlib: Let dets:open_file() crash when given raw file name
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See also ERL-55 and OTP-13229.
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* maint-21:
Updated OTP version
Update release notes
Update version numbers
Eliminate a crash in the beam_jump pass
stdlib: Fix a 'chars_limit' bug
Fix a race condition when generating async operation ids
Fix internal compiler error for map_get/2
beam_type: Fix unsafe optimization
public_key: Remove moduli 5121 and 7167 Thoose were added by 598629aeba9de98e8cdf5637043eb34e5d407751 but are not universaly supported.
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* peterdmv/stdlib/fix_uri_string_normalize/ERL-636/OTP-15112:
stdlib: Fix release_tests target in Makefile
stdlib: Fix normalization function in uri_string
Change-Id: I656a583befd8950d4326d15e60145c617acd41c3
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'make release_tests' copies the property_test directory.
Change-Id: Ife75711aec1ef6e85ef091b1ba28a221be3d1110
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* jl/sharpen-maps-tests/OTP-14012:
stdlib: Fix error reason for maps:with/without
Check for the overlap between maps and iterators
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- Fix parsing of hostnames that start with a number.
- Update uri_string:parse/1 to be only responsible for parsing
input URIs into URI components. Implicit percent-encoding
normalization has been removed.
- Implement percent-encoding normalization.
- Update uri_string:normalize/{1,2} to include percent-encoding
normalization.
- Update test suites according to the new semantics.
- Add new property test: normalize
Change-Id: I6f37dcae2b3fcb4b29d286dbb0dfc563e8f211ae
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Module and Id are now always included as fields in Config, so these
are no longer returned as separate elements.
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And add field 'module' in handler config.
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See also https://bugs.erlang.org/browse/ERL-607.
A zero field width used to insert line breaks "everywhere", but with
this patch no line breaks are inserted.
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* dgud/stdlib/string-case-bin-bug:
Fix *case bugs for binaries
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Bad optimizing code introduced in 5c51e87bee9d
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* sverker/ets-delete_all_objects-trap/OTP-15078:
erts: Rename untrapping db_free_*empty*_table
erts: Make ets:delete_all_objects yield on fixed table
erts: Optimize ets delete all in fixed table
erts: Refactor ets select iteration code
erts: Cleanup ets code
erts: Optimize ets hash object deallocactions
erts: Refactor pseudo deleted ets objects
erts: Make atomic ets:delete_all_objects yield
erts: Fix reduction bump for ets:delete/1
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Add ?OTP_RELEASE, -if and -elif to the preprocessor
OTP-15087
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OTP-14988
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Add tests which passes on Erlang release 20.0, but have changed since
then in later branches. The tests works in a "gap" between the old
test cases and the new test cases in order to make it stricter what to
return in this case.
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Libraries or applications that support more than one major
release of OTP may need to use conditional compilation of
Erlang source code. Here are few examples where it would be
necessary or desirable:
* To support a new data type or language feature only available
in the latest major release (real-world examples: maps and the
stacktrace syntax).
* To avoid warnings for deprecated functions.
* To avoid dialyzer warnings.
Previously, to do conditional compilation, one would have to
use a parse transform or some external tool such as 'autoconf'.
To simplify conditional compilation, introduce the -if and -elif
preprocessor directives, to allow code like this to be written:
-if(?OTP_RELEASE =:= 21).
%% Code that will only work in OTP 21.
-else.
%% Fallback code.
-endif.
What kind of expressions should be allowed after an -if?
We certainly don't want to allow anything with a side effect,
such as a '!' or a 'receive'. We also don't want it to be
possible to call erlang:system_info/1, as that could make the
code depedent on features of the run-time system that could
change very easily (such as the number of schedulers).
Requiring the expression to be a guard expression makes most
sense. It is to explain in the documentation and easy for users
to understand. For simplicity of implementation, only a single
guard expression will be supported; that is, the ',' and ';' syntax
for guards is not supported.
To allow some useful conditions to be written, there is a special
built-in function:
defined(Symbol) tests whether the preprocessor symbol is defined,
just like -ifdef. The reason for having this defined/1 is that
the defined test can be combined with other tests, for example:
'defined(SOME_NAME) andalso ?OTP_RELEASE > 21'.
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by using a cooperative strategy that will make
any process accessing the table execute delelete_all_objects_continue
until the table is empty.
This is not an optimal solution as concurrent threads will still
block on the table lock, but at least thread progress is made.
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Add a new pre-defined macro called OTP_RELEASE that will expand
to an integer being the OTP version. Thus, in OTP 19 the value will
be the integer 19.
The OTP_RELEASE macro is particularly useful in order to have
different source code depending on new language features or new
features in the type specification syntax. Those features are only
introduced in major versions of OTP.
To be truly useful, the -if preprocessor directive need to be
implemented. That is the purpose of the next commit.
Code that will need to work in both OTP 18 and OTP 19 can be
structured in the following way:
-ifdef(OTP_RELEASE).
%% Code that only works in OTP 19 and later.
-else.
%% Code that will work in OTP 18.
-endif.
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This replaces all uses of lib:progname/0 in tests.
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* siri/kernel/logger/OTP-13295:
Add documentation of the built-in logger handlers
Catch badarg in logger:get_format_depth/0
Add chars_limit option to logger_formatter
Don't kill logger process until all other processes are dead
Set call timeout for logger_server to infinity
Update primary bootstrap
Test cuddle for logger
Update cth_log_redirect to a logger handler
Start using logger internally in kernel and stdlib
Remove error_logger process and add logger process
Add logger
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* hasse/stdlib/rfc3339_datetime/OTP-14764:
stdlib: Add RFC 3339 functions to module calendar
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Allow installing multiple instances of sys debug function
This commit solves a bug which allowed installing {Fun,State} as sys debug function even if Fun was already installed. This happened in the case when the current State of the debug fun was undefined.
Also, the new format {Id,Fun,State} of debug functions can be installed, allowing multiple instances of the same fun.
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[stdlib/sys.erl] Fix sys module's debug statistics not including the out message count when using gen_server:call/2.
OTP-15047
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Functions for converting between RFC 3339 strings and system time
are added.
Options are lists, but we are considering using maps instead. If we
change, it will happen after Erlang/OTP 21.0-rc1 is released.
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