git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67957 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	[Bug #17780] Fix Method#super_method for module alias

	Method#super_method crashes for aliased module methods because they are
	not defined on a class. This bug was introduced in
	c60aaed1856b2b6f90de0992c34771830019e021 as part of bug #17130.
	---
	 proc.c                   |  2 +-
	 test/ruby/test_method.rb | 13 +++++++++++++
	 2 files changed, 14 insertions(+), 1 deletion(-)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67945 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Renamed `nurat_sub` compliant with `rb_rational_plus`


	Fix ArithmeticSequence#last and ArithmeticSequence#each for
	non-integer sequences (#3870)

	[Bug #17218]
	[ruby-core:100312]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Fix singleton class cloning

	Before this commit, `clone` gave different results depending on whether the original object
	had an attached singleton class or not.

	Consider the following setup:
	```
	class Foo; end
	Foo.singleton_class.define_method(:foo) {}

	obj = Foo.new

	obj.singleton_class if $call_singleton

	clone = obj.clone
	```

	When `$call_singleton = false`, neither `obj.singleton_class.singleton_class` nor
	`clone.singleton_class.singleton_class` own any methods.

	However, when `$call_singleton = true`, `clone.singleton_class.singleton_class` would own a copy of
	`foo` from `Foo.singleton_class`, even though `obj.singleton_class.singleton_class` does not.

	The latter case is unexpected and results in a visibly different clone, depending on if the original object
	had an attached class or not.

	Co-authored-by: Ufuk Kayserilioglu <ufuk.kayserilioglu@shopify.com>
	---
	 class.c                 | 31 ++++++++++++++++++++++---------
	 test/ruby/test_class.rb | 47 +++++++++++++++++++++++++++++++++++++++++++++++
	 2 files changed, 69 insertions(+), 9 deletions(-)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67935 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Don't double fractional seconds when passing timezone object to Time.new

	I found that fractional seconds were doubled when using the timezone
	feature of Time in Sequel's named_timezones extension (which uses
	TZInfo for the timezone object), and traced the problem to this code.

	There is no subsecx being modified in the utc_to_local call below
	this, and I'm not sure why you would want to add in the fractional
	seconds unless you assumed the timezone conversion would drop the
	existing fractional seconds (TZInfo doesn't drop fractional seconds).


	Subsecond of Time::tm should be 0


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67934 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Fix Method#super_method for aliased methods

	Previously, Method#super_method looked at the called_id to
	determine the method id to use, but that isn't correct for
	aliased methods, because the super target depends on the
	original method id, not the called_id.

	Additionally, aliases can reference methods defined in other
	classes and modules, and super lookup needs to start in the
	super of the defined class in such cases.

	This adds tests for Method#super_method for both types of
	aliases, one that uses VM_METHOD_TYPE_ALIAS and another that
	does not. Both check that the results for calling super
	methods return the expected values.

	To find the defined class for alias methods, add an rb_ prefix
	to find_defined_class_by_owner in vm_insnhelper.c and make it
	non-static, so that it can be called from method_super_method
	in proc.c.

	This bug was original discovered while researching [Bug #11189].

	Fixes [Bug #17130]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67933 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Added tests for Time#getlocal with UTC offset

	---
	 test/ruby/test_time.rb | 8 ++++++++
	 1 file changed, 8 insertions(+)

	Allow UTC offset without colons per ISO-8601 [Bug #17504]

	---
	 test/ruby/test_time.rb |  6 ++++++
	 time.c                 | 44 +++++++++++++++++++++++++++++---------------
	 2 files changed, 35 insertions(+), 15 deletions(-)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67928 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Capture to reserved name variables if already defined [Bug #17533]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	Make reciprocal properly of non-integral rational [Bug #17572]

	---
	 rational.c                 | 2 +-
	 test/ruby/test_rational.rb | 7 +++++++
	 2 files changed, 8 insertions(+), 1 deletion(-)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67926 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

    Adjust sp for `x = false; y = (return until x unless x)` [Bug #16695]

    test/ruby/test_syntax.rb: avoid "warning: assigned but unused
     variable"


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67925 b2dd03c8-39d4-4d8f-98ff-823fe69b080e