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* raimo/kernel/gen_statem-progress/OTP-14114:
Make code_change/4 optional
Implement fallback for terminate/3
Clarify code_change and callback mode change
Stop pampering with stacktraces
Clean up timer handling
Remove event timer optimization
Clean up timer handling
Reduce number of loop variables hence code mass
Optimize by using async cancel_timer
Bugfix: callback mode not cached after code change
Implement repeat_state and repeat_state_and_data
Correct type checking function for action {next_event,,}
Change arity of type to init_result/1
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* maint:
zip: Eliminate leak of open file after crash
zip: Don't crash when a zip file has an Unix extra header
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zip: Fix bugs ERL-348 and ERL-349
OTP-14246
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* maint:
stdlib: Add maps to term traversal
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Make sure that zip:extract() and zip:create() closes the zip
file if there is an error.
ERL-349
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* maint:
filename: Add safe_relative_path/1
Conflicts:
lib/stdlib/src/filename.erl
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filename: Add safe_relative_path/1
OTP-14215
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Atoms ('badarg', 'type_mismatch', &c) are used as errors instead of
tuples containing the parameters. This makes it possible for the
garbage collector to reclaim memory earlier.
Since the exact format of error tuples is undocumented no release note
is deemed necessary.
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* maint:
[xmerl] Remove faulty throws
[xmerl] Fix XML "well-formedness" bug i SAX parser
[xmerl] Correct bug handling multiple documents on a stream
stdlib: Improve pretty-printing of terms with maps
Conflicts:
lib/stdlib/test/io_SUITE.erl
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As of committing this branch maps:fold/3 calls maps:to_list/1, which
means that the time and memory needed for printing maps is not always
proportional to the size of the generated deep list of characters.
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Add safe_relative_path/1 to guard against directory traversal
attacks. It either returns a shorter path without any ".." or
"." components, or 'unsafe' if an ".." component would climb
up above the root of the relative path. Here are a few
examples:
safe_relative_path("a/b/..") => "a"
safe_relative_path("a/..") => ""
safe_relative_path("a/../..") => unsafe
safe_relative_path("/absolute/path") => unsafe
The returned path can be used directly or combined with an
absolute path using filename:join/2.
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Update erl_tar to support PAX format (redux)
OTP-14226
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This commit introduces the following key changes:
- Support for reading tar archives in formats currently in common use,
such as v7, STAR, USTAR, PAX, and GNU tar's extensions to the
STAR/USTAR format.
- Support for writing PAX archives, only when necessary, using USTAR
when possible for greater portability.
These changes result in lifting of some prior restrictions:
- Support for reading archives produced by modern tar implementations
when other restrictions described below are present.
- Support for filenames which exceed 100 bytes in length, or paths which
exceed 255 bytes (see USTAR format specification for more details on
this restriction).
- Support for filenames of arbitrary length
- Support for unicode metadata (the previous behaviour of erl_tar was
actually violating the spec, by writing unicode-encoded data to fields
which are defined to be 7-bit ASCII, even though this technically
worked when using erl_tar at source and destination, it may not have
worked with other tar utilities, and this implementation now conforms
to the spec).
- Support for uid/gid values which cannot be converted to octal
integers.
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Make "~s" fail for Unicode atoms
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* bjorn/cuddle-with-tests:
ets_tough_SUITE: Add the gen_server behavior
ets_tough_SUITE: Remove functions that are never called
ets_SUITE: Eliminate internal exports used for spawn/apply
lists_SUITE: Run the droplast/1 test case
random_{iolist,unicode_list}: Remove unused functions
stdlib test: Eliminate export_all from re_SUITE and friends
asn1_SUITE: Make sure that there are no unused functions
Simplify running of asn1 app tests
asn1_SUITE: Remove unused functions
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Add a declaration to make it clear for tools that this module
uses the gen_server behavior. While at it, also remove the
totally unnecessary 'export_all' option.
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In the future we will run xref to make sure that all functions
that are exported are also used. Having internal exports only
used for spawning or applying will mess with that.
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The testcase was never actually run.
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There is no actual need to use export_all, since very few functions
are actually called from the outside. While we are it, remove the
unused functions in run_pcre_tests.erl.
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* maint:
stdlib: Improve Erlang shell's tab-completion of long names
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Extend shell c(...) to find and recompile modules
OTP-14190
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This extends the shell function c/1 and c/2 so that if the argument is a
module name instead of a file name, it automatically locates the .beam file
and the corresponding source file, and then recompiles the module using the
same compiler options (plus any options passed to c/2). If compilation
fails, the old beam file is preserved. Also adds c(Mod, Opts, Filter),
where the Filter argument allows you to remove old compiler options before
the new options are added.
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This moves, extends and exports functionality that previously existed only
internally in filename:find_src/1/2, adding the ability to automatically
substitute file suffixes and use different rules for different suffixes.
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26b59dfe67e introduced support for arbitrary Unicode characters in
atoms. After that commit, it is possible to print any atom with
a "~s" format string:
1> io:format("~s\n", ['спутник']).
спутник
Note that the same text as a string will fail:
2> io:format("~s\n", ["спутник"]).
** exception error: bad argument
in function io:format/3
called as io:format(<0.53.0>,"~s\n",
[[1089,1087,1091,1090,1085,1080,1082]])
Being more permissive for atoms is probably beneficial for io:format/2.
However, for io_lib:format/2, the new behavior breaks this guarantee
in the documentation for io_lib:format/2:
If and only if the Unicode translation modifier is used in
the format string (that is, ~ts or ~tc), the resulting list
can contain characters beyond the ISO Latin-1 character range
(that is, numbers > 255).
The problem is that you can no longer be sure whether io_lib:format/2
will return an iolist that can be successfully passed to a port
or iolist_to_binary/1.
We see three solutions:
1. Keep the new behavior. That means that you can get non-iolist data
when you use ~s for printing an atom, but a 'badarg' when printing
Unicode strings. That is inconsistent, and it delays error detection
if the result is passed to a port or iolist_to_binary/1.
2. Always allow Unicode characters for ~s. That would be incompatible,
because ~s says that any binary is encoded in latin1, while ~ts says
that any binary is encoded in UTF-8. To implement this solution, we
could no longer support latin1 binaries; all binaries would have to
be encoded in UTF-8.
3. Only allow ~s for atoms where all characters are less than 256.
Require ~ts to print atoms such as 'спутник'.
We reject solution 1 because it is slightly incompatible and is
inconsistent.
We reject solution 2 because it too incompatible.
Therefore, this commit implements solution 3.
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* josevalim/atu8-chunk/PR-1078/OTP-14178:
Add new AtU8 beam chunk
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The new chunk stores atoms encoded in UTF-8.
beam_lib has also been modified to handle the new
'utf8_atoms' attribute while the 'atoms' attribute
may be a missing chunk from now on.
The binary_to_atom/2 BIF can now encode any utf8
binary with up to 255 characters.
The list_to_atom/1 BIF can now accept codepoints
higher than 255 with up to 255 characters (thanks
to Björn Gustavsson).
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* egil/cuddle-tests:
stdlib: Increase timetrap for rand_SUITE
common_test: Increase timetrap for cth_hooks_SUITE
compiler: Increase timetrap timeouts for lc_SUITE
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* hasse/stdlib/check_type_constraints/OTP-14070/PR-1214:
stdilb: Check for bad type constraints in function types
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* egil/stdlib/gen_event-start-2/OTP-14123:
stdlib: Document gen_event start options
stdlib: Test gen_event options
stdlib: Refactor gen_event_SUITE
stdlib: Remove whitespace error in gen_event_SUITE
stdlib: Add start options to gen_event
stdlib: Remove whitespace errors in gen_event
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* maint:
Remove faulty release note for these fixes
New test cases testing stacktrace from apply on erlang:error()
Fix stactrace for apply on error/[1,2], exit/1, or throw/1
Fix stack-trace generated by a traced process
Conflicts:
erts/emulator/beam/beam_emu.c
erts/etc/unix/etp-commands.in
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OTP-14055
* rickard/stacktrace-bugs:
Remove faulty release note for these fixes
New test cases testing stacktrace from apply on erlang:error()
Fix stactrace for apply on error/[1,2], exit/1, or throw/1
Fix stack-trace generated by a traced process
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Similar to maps:take/2, add take/2 to the other dictionary
modules in STDLIB:
orddict:take(Key, Dict) -> {Val,NewDict} | 'error'.
dict:take(Key, Dict) -> {Val,NewDict} | 'error'.
gb_trees:take(Key, Dict) -> {Val,NewDict}.
For gb_trees also add:
gb_trees:take_any(Key, Dict) -> {Val,NewDict} | 'error'.
gb_trees already has delete() and delete_any(), so we will
follow that design pattern.
Suggested by Boris Bochkaryov in https://github.com/erlang/otp/pull/1209.
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* maint:
Allow escripts with only two lines
Add project-wide Emacs settings file
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The current implementation assumes that escripts all have at least
three lines. But according to the escript documentation, comments
on the second line and emulator flags on the third line are all
optional. Thus escripts with only two lines -- shebang on the
first line and code on the second line -- will not run. This commit
fixes the problem by rearranging the escript header parsing logic,
and recognize the escript body on the second line if the header only
contains a line of shebang.
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