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# -*- rdoc -*-
= NEWS for Ruby 2.6.0
This document is a list of user visible feature changes made between
releases except for bug fixes.
Note that each entry is kept so brief that no reason behind or
reference information is supplied with. For a full list of changes
with all sufficient information, see the ChangeLog file or Redmine
(e.g. <tt>https://bugs.ruby-lang.org/issues/$FEATURE_OR_BUG_NUMBER</tt>)
== Changes since the 2.5.0 release
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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=== Language changes
* $SAFE is a process global state and we can set 0 again. [Feature #14250]
* refinements take place at block passing. [Feature #14223]
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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=== Core classes updates (outstanding ones only)
* Dir
* New methods:
* added Dir#each_child and Dir#children instance methods. [Feature #13969]
* Kernel
* Kernel.#system takes :exception option to raise an exception on failure. [Feature #14386]
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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* Proc
* Proc#call doesn't change $SAFE any more. [Feature #14250]
* Random
* New methods:
* added Random.bytes. [Feature #4938]
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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=== Stdlib updates (outstanding ones only)
* Matrix
* New method:
* Matrix#antisymmetric?
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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=== Compatibility issues (excluding feature bug fixes)
=== Stdlib compatibility issues (excluding feature bug fixes)
=== C API updates
=== Supported platform changes
=== Implementation improvements
* `--jit` option to enable JIT compiler is added. [Feature #14235] [experimental]
* VM generator script renewal; makes the generated VM more optimized. [GH-1779]
`$SAFE` as a process global state. [Feature #14250] * vm_core.h (rb_vm_t): move `rb_execution_context_t::safe_level` to `rb_vm_t::safe_level_` because `$SAFE` is a process (VM) global state. * vm_core.h (rb_proc_t): remove `rb_proc_t::safe_level` because `Proc` objects don't need to keep `$SAFE` at the creation. Also make `is_from_method` and `is_lambda` as 1 bit fields. * cont.c (cont_restore_thread): no need to keep `$SAFE` for Continuation. * eval.c (ruby_cleanup): use `rb_set_safe_level_force()` instead of access `vm->safe_level_` directly. * eval_jump.c: End procs `END{}` doesn't keep `$SAFE`. * proc.c (proc_dup): removed and introduce `rb_proc_dup` in vm.c. * safe.c (rb_set_safe_level): don't check `$SAFE` 1 -> 0 changes. * safe.c (safe_setter): use `rb_set_safe_level()`. * thread.c (rb_thread_safe_level): `Thread#safe_level` returns `$SAFE`. It should be obsolete. * transcode.c (load_transcoder_entry): `rb_safe_level()` only returns 0 or 1 so that this check is not needed. * vm.c (vm_proc_create_from_captured): don't need to keep `$SAFE` for Proc. * vm.c (rb_proc_create): renamed to `proc_create`. * vm.c (rb_proc_dup): moved from proc.c. * vm.c (vm_invoke_proc): do not need to set and restore `$SAFE` for `Proc#call`. * vm_eval.c (rb_eval_cmd): rename a local variable to represent clearer meaning. * lib/drb/drb.rb: restore `$SAFE`. * lib/erb.rb: restore `$SAFE`, too. * test/lib/leakchecker.rb: check `$SAFE == 0` at the end of tests. * test/rubygems/test_gem.rb: do not set `$SAFE = 1`. * bootstraptest/test_proc.rb: catch up this change. * spec/ruby/optional/capi/string_spec.rb: ditto. * test/bigdecimal/test_bigdecimal.rb: ditto. * test/fiddle/test_func.rb: ditto. * test/fiddle/test_handle.rb: ditto. * test/net/imap/test_imap_response_parser.rb: ditto. * test/pathname/test_pathname.rb: ditto. * test/readline/test_readline.rb: ditto. * test/ruby/test_file.rb: ditto. * test/ruby/test_optimization.rb: ditto. * test/ruby/test_proc.rb: ditto. * test/ruby/test_require.rb: ditto. * test/ruby/test_thread.rb: ditto. * test/rubygems/test_gem_specification.rb: ditto. * test/test_tempfile.rb: ditto. * test/test_tmpdir.rb: ditto. * test/win32ole/test_win32ole.rb: ditto. * test/win32ole/test_win32ole_event.rb: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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=== Miscellaneous changes