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proc_lib calls erlang:get_stacktrace/0 twice, which is unnecessary,
and potentially unsafe since there are calls to many functions
in between. Any of the calls could potentially cause and catch
an exception, invalidating the stacktrace.
Only call erlang:get_stacktrace/0 once, and pass the result to
the second place where it is needed.
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It happens to work today, but it is potentially unsafe to call
io:format/2 before calling erlang:get_stacktrace/0. Make the
code safe by calling erlang:get_stacktrace/0 directly after
catching the exception.
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Fix a few minor issues in the lcnt documentation
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Simplify building a lock-counting emulator
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We generally avoid abbreviations such as "e.g." and "i.e." in
the documentation. We write "Erlang", not "erlang" (except when
referring to the erlang module).
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* ingela/dtls/opts:
ssl: Adopt setopts and getopts for DTLS
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Revise minor notation in httpc:request/[4,5]
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* ingela/remove-debug:
ssl: Remove debug printout
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* ingela/dtls/replay-protect/OTP-14077:
dtls: Implement replay protection
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See RFC 6347 section 3.3
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Warn for potentially unsafe use of get_stacktrace/0
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Add option hibernate_after to gen_server, gen_statem and gen_event.
Also added to the deprecated gen_fsm behaviour.
OTP14405
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Add unicode binary support to http_uri functions
OTP-14404
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* ingela/ssl/bench-certs:
ssl: Disable Server Name verification in bench tests for now
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Conflicts:
OTP_VERSION
lib/inets/vsn.mk
lib/ssl/vsn.mk
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erlang:get_stacktrace/0 returns the stacktrace for the latest
exception. The problem is that the stacktrace is kept until the next
exception occurs. If the last exception was a 'function_clause' or a
'badarg', the arguments for the call are also kept forever. The
arguments can be terms of any size (potentially huge).
In a future release, we would like to only allow
erlang:get_stacktrace/0 from within a 'try' expression. That would
make it possible to clear the stacktrace when the 'try' expression is
exited.
The 'catch' expression has no natural end where the stacktrace could
be cleared. The stacktrace could be cleared at the end of the function
that the 'catch' occurs in, but that would cause problems in the
following scenario (from real life, but simplified):
try
...
catch _:_ ->
io:format(...),
io:format("~p\n", [erlang:get_stacktrace()])
end.
%% In io.erl.
format(Fmt, Args) ->
Res = case ... of
SomePattern ->
catch...
...;
SomeOtherPattern ->
%% Output the formatted string here
...
end,
clear_stacktrace(), %% Inserted by compiler.
Res.
The call to io:format() would always clear the stacktrace before
it could be retrieved.
That problem could be solved by tightning the scope in which the
stacktrace is kept, but the rules for how long erlang:get_stacktrace/0
would work would become complicated.
Therefore, the solution we suggest for a future major release of
OTP is that erlang:get_stacktrace/0 will return [] if it is called
outside the 'catch' part of a 'try' expression.
To help users prepare, introduce a warning when it is likely that
erlang:get_stacktrace/0 will always return an empty list, for example
in this code:
catch error(foo),
Stk = erlang:get_stacktrace()
or in this code:
try Expr
catch _:_ -> ok end,
Stk = erlang:get_stacktrace()
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* hans/inets/ftp_recv_chunk_close/OTP-14391:
inets: add testcase to ftp_SUITE Try doing three consecutive chunked receive with some changed timing in the ending sequence
inets: Try fix ftp recv_chunk timing issue
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* bjorn/compiler/cover:
compiler.cover: Remove deleted module sys_pre_expand
Cover the first clause of v3_core:bin_expand_string/4
compile_SUITE: Test the r16, r17, r18, r19 options
erl_bifs: Remove pure BIFs serving no useful purpose
erl_bifs: Remove erlang:hash/2 from list of pure functions
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Make calls to get_stacktrace/0 future-proof
OTP-14400
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In the future, erlang:get_stacktrace/0 will probably only work
inside a the 'catch' block of a 'try' expression.
Future-proof the code by rewriting the old-style catch to
a try...catch.
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In the future, erlang:get_stacktrace/0 will probably only work
inside a the 'catch' block of a 'try' expression.
Future-proof the code by rewriting the old-style catch to
a try...catch.
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The return value of erlang:get_stacktrace/0 is not defined
when called like this:
try Expr of
Pattern ->
erlang:get_stacktrace()
end
Currently, the stacktrace will be from a random earlier error.
In a future release, it may be [].
Note: We can remove the entire 'case' statement because
CTHReason can never be an atom.
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Correct description of nowarn_obsolete_guard
By default, warnings for obsolete guards are turned on. Correct the description to make that clear.
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* ingela/ssl/windows-cuddle:
ssl: Only run sslv2 reject tests on old OpenSSL version
ssl: Try to workaround OpenSSL windows obscurities
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* maint:
Updated OTP version
Update release notes
inets: Prepare for release
inets: Mend ipv6_host_with_brackets option
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* maint-18:
Updated OTP version
Update release notes
inets: Prepare for release
inets: Mend ipv6_host_with_brackets option
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=== OTP-18.2.4.1 ===
Changed Applications:
- inets-6.1.1.1
Unchanged Applications:
- asn1-4.0.1
- common_test-1.11.2
- compiler-6.0.2
- cosEvent-2.2
- cosEventDomain-1.2
- cosFileTransfer-1.2
- cosNotification-1.2
- cosProperty-1.2
- cosTime-1.2
- cosTransactions-1.3
- crypto-3.6.2
- debugger-4.1.1
- dialyzer-2.8.2
- diameter-1.11.1
- edoc-0.7.17
- eldap-1.2
- erl_docgen-0.4.1
- erl_interface-3.8.1
- erts-7.2.1
- et-1.5.1
- eunit-2.2.12
- gs-1.6
- hipe-3.14
- ic-4.4
- jinterface-1.6.1
- kernel-4.1.1
- megaco-3.18
- mnesia-4.13.2
- observer-2.1.1
- odbc-2.11.1
- orber-3.8
- os_mon-2.4
- ose-1.1
- otp_mibs-1.1
- parsetools-2.1.1
- percept-0.8.11
- public_key-1.1
- reltool-0.7
- runtime_tools-1.9.2
- sasl-2.6.1
- snmp-5.2.1
- ssh-4.2.1
- ssl-7.2
- stdlib-2.7
- syntax_tools-1.7
- test_server-3.9.1
- tools-2.8.2
- typer-0.9.10
- webtool-0.9
- wx-1.6
- xmerl-1.3.9
* tag 'OTP-18.2.4.1':
Updated OTP version
Update release notes
inets: Prepare for release
inets: Mend ipv6_host_with_brackets option
Conflicts:
OTP_VERSION
lib/inets/doc/src/notes.xml
lib/inets/src/inets_app/inets.appup.src
lib/inets/vsn.mk
otp_versions.table
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In the future, erlang:get_stacktrace/0 will probably only work
inside a the 'catch' block of a 'try' expression.
Future-proof the code by rewriting the old-style catch to
a try...catch.
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* sverker/ets-select-replace-const:
stdlib: Add examples for ets:select_replace docs
erts: Fix ets:select_replace with {const, NewTuple}
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