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Conflicts:
OTP_VERSION
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* hans/ssh/scanning/OTP-12247:
ssh: fix ssh.appup.src.
ssh: Corrected appup
ssh: fix .app and .appup errors
ssh: remove supervisors for crashed connection worker
ssh: Print supervisor tree (on demand).
ssh: prepare for release
ssh: avoid terminated but not deleted children to be counted.
ssh: simple info function (ssh_info:print/0).
ssh: Gracefully handle bad handshake messages
ssh: reduce amount of printouts
ssh: Fix port scanner problems
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* maint:
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* rickard/default-eager-check-io/OTP-12254:
Change default to "eager check I/O"
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* rickard/master/eager-check-io/OTP-12117:
No eager check I/O on OSE
Introduce support for eager check I/O scheduling
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* rickard/maint-17/eager-check-io/OTP-12117:
No eager check I/O on OSE
Introduce support for eager check I/O scheduling
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* maint:
Fix rare race condition in Dets
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* hb/stdlib/fix_dets_test:
Fix rare race condition in Dets
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The correction is due to the the evil testcase
dets_SUITE:simultaneous_open(). If the process repairing a Dets file
is killed (should normally never happen), and another process tries to
repair the file, a temporary file from the first process could live on
for a while, even after a successful call to file:delete(). This has
only been seen on W-nd-ows, where it is a known problem.
There are other ways to deal with the problem (rename the file; use
some other filename), but we continue using one certain filename in
order to be as backwards compatible as possible.
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* maint:
debugger: clean up Common Test adaption
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* hb/debugger/ct_line_cleanup:
debugger: clean up Common Test adaption
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* hb/dialyzer/compiler_option_asm_removed:
dialyzer: remove recognition of the compiler option 'asm'
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* vinoski/crashdump-sigusr1:
Clarify the use of SIGUSR1 for forcing crash dumps
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* vinoski/clarify-drv-async-return:
Clarify docs for driver_async() return value
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OTP-12256
* HansN/prop_test_updates:
Optimizations
ssh_eqc_encode_decode.erl compiles
Add timeout to a property test (Thanks John & Tobias @ QuviQ)
Reduce the total testing time for the properties to 20 seconds
No side effects in function arguments
Passing global var to QuickCheck statemachine
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OTP-12255
* vinsentru/inets_ftp_extension:
INETS FTP: EPSV and EPRT for IPv4 added
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* qrilka/patch-2/typo-fix:
Minor misprints correction
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* egil/map-type-opt/OTP-12253:
compiler: Type is_nonempty_list optimization
compiler: Type map optimization
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* peppe/common_test/crash_during_close:
Solve memory consumption problem
Fix problem with buffered async io messages executed too late
Don't generate weird exit if ct_logs has terminated before shut down
OTP-12159
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The compiler option 'asm' has been replaced by 'from_asm' in
Erlang/OTP 18.0.
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The ct_line module was removed some releases ago.
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* lukas/erts/non-blocking-shell:
Fix io:columns/0 timeout when invoked via user
kernel,ssh: Add synchronous user_drv protocol
erts: Make writing to non-tty fds non-blocking
erts: Make tty driver non-blocking
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* tuncer/compiler/finalize-asm-deprecation/OTP-12100:
compiler: finalize 18.x 'asm' deprecation
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* maint:
BER decoding: Don't allow primitives with indefinite lengths
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* bjorn/asn1/primitive-indefinite-length/OTP-12205:
BER decoding: Don't allow primitives with indefinite lengths
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* adelzhang/fix_application_master_comment:
Fix obsolete comment
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The crash_dump document mentions indirectly that delivering a SIGUSR1 to a
running emulator process can force it to crash dump. Clarify that text to
make it clear SIGUSR1 can be used for that purpose, and also add a similar
note about using SIGUSR1 to the erl documentation.
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The documentation for driver_async() still referred to the return value of
the function as a "handle", which is no longer meaningful since
driver_async_cancel() was deprecated and removed. Modify the documentation
to simply indicate that the driver_async() return value will be -1 if it
fails.
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This patch fixes an issue where io:columns/0 times out when invoked from
any application callback (or any supervisor/supervised module since the
group leader is inherited).
To reproduce the issue, one must simply call io:columns() from any
application callback. You will notice the process will block for 2 seconds
which then times out and returns {:error, :enotsup}.
Note this bug only happens inside the erlang shell (using -noshell or
escripts do not trigger the bug).
To fix the bug, it is important to understand how io requests flow from
application callback processes. Here are the steps followed:
1. Since io:columns/1 is timing out, the first step is to find out who is the
group leader for the application callback process. Using process_info/1, we
can see the parent process is the application_master and handles
io_requests by delegating them to the group_leader.
2. By inspecting the application_master process, we can find the group_leader
the message is sent is the registered process named user. The process is
running the group module which does handle io:columns/1 requests delegating
them to user_drv process.
3. The user_drv process does handle tty_geometry requests, except that a
clause above ends up short-circuiting all tty_geometry requests from the
user process.
This patch moves the user clause below the specific driver messages.
OTP-12241
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