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The missing support for renumbering labels in recv_mark
and recv_set did not seem to cause any problems, probably because
the insructions are introduced late and their labels would keep
their numbers. But it there will definitely be a problem if the
recv_mark and recv_set instructions would be introduced much earlier.
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For unclear reasons, v3_kernel attempts to guarantee that #k_try{}
always has at least one return value, even if it will never be
used. I said "attempts", because the handler block that is executed
when an exception is caught does not have the same guarantee. That
means that if an exception is thrown, the return value will not
actually be set.
In practice, however, this is not a problem for the existing code
generator (v3_codegen). The generated code will still be safe.
If we are to rewrite the code generator to generate an SSA-based
intermediate format, this inconsistency *will* cause problems
when creating phi nodes.
While at it, also remove an unecessary creation of new variables
in generation of #k_try_enter{}.
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Conflicts:
OTP_VERSION
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* ingela/ssl/no-sslv2-hello-support/OTP-14824:
ssl: Remove interoperability option v2_hello_compatible
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Remove low memory need for HiPE on x86_64
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* sverker/send-tick/OTP-14681:
kernel: Fix and improve send_tick logic
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* rickard/dirty-work-gone/OTP-14978:
Reschedule on ordinary scheduler if dirty work is gone
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* rickard/pre-alloc-alignment/OTP-14977:
Force 64-bit alignment for pre-allocators unless x86
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* rickard/remove-approx-started/OTP-14975:
Remove process start time for crash dumps
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* sverker/dict-put-immed-opt:
erts: Optimize erlang:put/2 for hash collision lists
erts: Optimize erlang:put/2 for immed values
erts: Refactor erlang:put/2
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* hasse/dialyzer/extra-range/OTP-14970:
ssl: Correct some specs
os_mon: Correct a spec
Fix broken spec in beam_asm
Dialyzer should not throw away spec information because of overspec
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Allow multiple modifier characters in io:format control sequences
OTP-14971
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This makes it possible to print unicode atoms at the same time as
suppressing detection of printable lists.
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* hans/ssh/acceptor_restart/OTP-14955:
ssh: Retry and exponentially backoff listener restart
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* hans/crypto/remove_unused_functions/OTP-14956:
crypto: Remove undocumented, unused and erroneous functions
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* john/erts/tuple-arityval-fixes/OTP-14963/ERL-577:
Make doc entry for maximum tuple size reflect reality
Assert that sz <= MAX_ARITYVAL in make_arityval(sz)
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* john/erts/assert-on-memcpy-memset-etc:
Always use sys_memcpy/cmp/etc instead of plain memcpy/cmp/etc
Check the arguments to sys_memcpy and friends
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process_info/1 retrieves a number of properties related to a process,
including the list of messages in its mailbox. This is potentially
unsafe if the target process has a large number of queued messages:
- there is no a priori upper bound on the amount of memory being
allocated to hold that list, and
- the loop to retrieve the messages is uninterruptible, so the
Erlang scheduler where this executes blocks for the duration
We've seen process_info/1 bring down heavily loaded nodes on more
than one occasion. At least once it appeared to have blocked the
Erlang heart process from executing, causing the external heart to
kill the VM.
Consequently this removes 'messages' from the list of process_info
tags to retrieve for process_info/1. Note that process_info/1 still
retrieves 'message_queue_len', and process_info/2 can still retrieve
'messages' when asked to.
A few places in the OTP libraries need minor adjustments, since they
want 'message_queue_len' but compute it from the length of the list
of messages.
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* peterdmv/use_uri_string/OTP-14902:
common_test: Use uri_string
ssl: Use uri_string
public_key: Use uri_string
observer: Use uri_string
Change-Id: I4beac2289db039cc7d566807727c5aaf7fadf942
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This is essentially PR 102, https://github.com/erlang/otp/pull/102.
The OTP Technical Board decided to change the name of the function to
search/2.
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Make io_lib:unscan_format/1 work with pad char and default precision
OTP-14958
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* hasse/stdlib/improve_limit_term:
stdlib: Improve io_lib:limit_term/2
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Do not treat binaries as top level in dbg_ieval
OTP-14957
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crypto:dh_generate_parameters and crypto:dh_check
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Passing NULL is undefined behavior and unconditionally executing these
may result in the compiler optimizing away a later NULL check. It can
often work since the pointer isn't touched when the length is 0, but
it's a major footgun. See ERL-573.
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Improve handling of maps. Addendum to b57e890.
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Improve documentation of io:format ~p when Unicode is involved
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