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* maint:
asn1_SUITE: Fix failure in xref_export_all/1
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The variable 'S' was used twice. If the test case failed
because there were unused functions in asn1_SUITE, there
would be an ugly badmatch exception instead of the intended
nice error message.
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Fix a broken erlang:trace/3 link in doc
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which is has been since 3d21f793538927ae88f78504a11dd898e8ca1a7a
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Conflicts:
lib/stdlib/test/stdlib_bench_SUITE.erl
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A minor fix.
If the Erlang shell saves no results (history(0) or results(0)), the
evaluator process now garbage collects itself. This means that any
huge binaries created by the evaluation are reclaimed faster than
before.
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Argument order can prevent the delayed sub binary creation.
Here is an example directly from the Efficiency Guide:
non_opt_eq([H|T1], <<H,T2/binary>>) ->
non_opt_eq(T1, T2);
non_opt_eq([_|_], <<_,_/binary>>) ->
false;
non_opt_eq([], <<>>) ->
true.
When compiling with the bin_opt_info option, there will be a
suggestion to change the argument order.
It turns out sys_core_bsm can itself change the order, not the
order of the arguments of themselves, but the order in which
the arguments are matched. Here is how it can be rewritten in
pseudo Core Erlang code:
non_opt_eq(Arg1, Arg2) ->
case < Arg2,Arg1 > of
< <<H1,T2/binary>>, [H2|T1] > when H1 =:= H2 ->
non_opt_eq(T1, T2);
< <<_,T2/binary>ffff>, [_|T1] > ->
false;
< <<>>, [] >> ->
true
end.
When rewritten like this, the bs_start_match2 instruction will be
the first instruction in the function and it will be possible to
store the match context in the same register as the binary
({x,1} in this case) and to delay the creation of sub binaries.
The switching of matching order also enables many other simplifications
in sys_core_bsm, since there is no longer any need to pass the position
of the pattern as an argument.
We will update the Efficiency Guide in a separate branch before the
release of OTP 21.
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* ingela/ssl/remove-rsa-keyexchange-from-default/OTP-14769:
ssl: RSA key exchange is considered broken do not support by default
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* hasse/stdlib/limit_gen_bench:
stdlib: Spend less time in gen_server benchmarks
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* maint:
stdlib: Handle Unicode when formatting stacktraces
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* hasse/stdlib/unicode_stacktrace/OTP-14847/ERL-553:
stdlib: Handle Unicode when formatting stacktraces
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Replace long long with Uint64
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Example symptom:
1> float_to_list(0.145, [{decimals,1}]).
"0.2"
There were two problems in sys_double_to_chars_fast
1. Most serious was adding 0.55555555 / (10^D) instead of 0.5 / (10^D)
which imposed a 5.5% risk of a faulty rounding up.
2. Using fixpoint for frac_part which lost significant bits if F < 0.5
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Sign character was not accounted for.
Ex:
float_to_list(-3.1265538967899625e+69, [{decimals,16}]).
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* bjorn/compiler/cuddle-with-tests:
beam_match_SUITE: Eliminate warnings for unused variables
bs_match_SUITE: Add tests case written when walking into a dead end
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* maint:
stdlib: Correct a filelib test case
stdlib: Let filelib:find_source() search subdirs
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* hasse/stdlib/find_src/OTP-14832/ERL-527:
stdlib: Correct a filelib test case
stdlib: Let filelib:find_source() search subdirs
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Limit the time used for the benchmarks introduced in b8f16f0.
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* maint:
ssl: Call clean version function
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* ingela/ssl/test-cuddle:
ssl: Call clean version function
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Make sure tests are run with intended version settings.
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See also ERL-553 and ERL-544 (commit c3ddb0f).
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'john/runtime_tools/reduce-sysinfo-to_file-memory-use/OTP-14816' into maint
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* maint:
crypto: Disable RSA sslv23 padding for LibreSSL >= 2.6.1
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* hans/crypto/no_rsa_pad_sym/ERL-546/OTP-14873:
crypto: Disable RSA sslv23 padding for LibreSSL >= 2.6.1
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Conflicts:
lib/observer/src/crashdump_viewer.erl
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Not supported in newer LibreSSL.
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Also modified erl_bif_types:infinity_bsl() when called with zero as
first argument. As of writing this, erlang:'bsl'/2 is modified on the
master branch to never fail if called with a huge second argument.
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Add some tests cases written when attempting some new optimizations
that turned out to be unsafe.
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* siri/cdv/many-links/OTP-14725:
[observer] Improve performance for many links or monitors
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OTP:13713: Add documentation and typespecs for inet:i/0
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This test failed every now and then since the selected max size could
be equal to actual size of the dump - so the dump was not
truncated. This is now corrected.
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Run beam_block a second time
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Clean up and improve sys_core_fold optimizations
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Refactor '%live' and '%def' annotations
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