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The current code for the evaluation of ordinary funs is dependent
on the order on variables in the fun environment as returned by
erlang:fun_info(Fun, env).
To avoid the problem in the future, make sure that we only have one
free variable in the funs that we will need to inspect using
erlang:fun_info(Fun, env).
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This adds optional names to fun expressions. A named fun expression
is parsed as a tuple `{named_fun,Loc,Name,Clauses}` in erl_parse.
If a fun expression has a name, it must be present and be the same in
every of its clauses. The function name shadows the environment of the
expression shadowing the environment and it is shadowed by the
environment of the clauses' arguments. An unused function name triggers
a warning unless it is prefixed by _, just as every variable.
Variable _ is allowed as a function name.
It is not an error to put a named function in a record field default
value.
When transforming to Core Erlang, the named fun Fun is changed into
the following expression:
letrec 'Fun'/Arity =
fun (Args) ->
let <Fun> = 'Fun'/Arity
in Case
in 'Fun'/Arity
where Args is the list of arguments of 'Fun'/Arity and Case the
Core Erlang expression corresponding to the clauses of Fun.
This transformation allows us to entirely skip any k_var to k_local
transformation in the fun's clauses bodies.
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Dialyzer so far only supported letrecs at the top-level
and comprehension-like letrecs (i.e. that were directly applied)
in their body.
This commit address this issue by storing in the callgraph
bound letrec labels pointing to their functions. This information
is then used by the dataflow to properly lookup recursive
definitions.
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The R16B03 release
Conflicts:
lib/sasl/vsn.mk
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* siri/test-bugfix-upgrade-emulator:
[sasl] Test bugfix in branch 'schlagert/fix_emulator_upgrades'
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OTP-11529
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* rickard/garbage_collect/OTP-11388:
Parallel check_process_code when code_server purge a module
Functionality for disabling garbage collection
Use asynchronous check_process_code in code_parallel_SUITE
Execution of system tasks in context of another process
Conflicts:
bootstrap/lib/kernel/ebin/hipe_unified_loader.beam
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
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* schlagert/fix_emulator_upgrades:
Fix boot file generation for intermediate releases.
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* hans/inets/ftpc_test_fail:
inets: Restore ftp test files for the inets_{,sup_}SUITE to not fail
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* ia/inets/cuddle-with-tests:
inets: Add crypto start check to ssl test cases
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* peppe/common_test/r16b03_docs_updated:
Update event handling documentation
OTP-11524
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* sverk/crypto-strrchr-bug:
crypto: Fix bug in change_basename
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* peppe/common_test/r16b03_docs:
Update documentation
OTP-10631
OTP-11305
OTP-11523
OTP-11524
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* anders/diameter/doc/OTP-11519:
Assorted doc fixes/tweaks
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strrchr used on non null-terminated string.
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* sverk/yb/aes_ige_crypt:
crypto: Update supports/0 for des3_cbf and aes_ige256
crypto: Throw notsup for AES IGE if openssl older than 0.9.8c
crypto: Add IGE mode for AES
OTP-11522
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* hans/ssh/cli_delays:
ssh: Fix long cli delays. (Part of OTP-11339, OTP-10953)
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* hans/ftp/dialyzer_warning:
ftp: fix sockname dialyzer warning including ftp:sockname/1 bug
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A step in fixing the tickets.
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* sverk/crypto-no_answer_from_tc_supervisor:
crypto: Add more lazy_eval to avoid no_answer_from_tc_supervisor
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A previous refactoring messed up the paths used in the start.boot
file used in intermediate releases generated for emulator upgrades.
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* egil/fix-darwin-64-configure-default/OTP-11521:
erts: Let cc determine default wordsize for darwin build
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* peppe/common_test/hook_skip_failure:
Fix CT hook pre_end_per_group causing crash when returning {skip,Reason}
OTP-11409
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