until we figure out why it's failing.

	[Bug #19187] Fix for tzdata-2022g

	---
	 test/ruby/test_time_tz.rb | 21 +++++++++++++++------
	 1 file changed, 15 insertions(+), 6 deletions(-)

    st.c: Do not clear entries_bound when calling Hash#shift for empty
     hash

    tab->entries_bound is used to check if the bins are full in
    rebuild_table_if_necessary.

    Hash#shift against an empty hash assigned 0 to tab->entries_bound, but
    didn't clear the bins. Thus, the table is not rebuilt even when the bins
    are full. Attempting to add a new element into full-bin hash gets stuck.

    This change stops clearing tab->entries_bound in Hash#shift.
    [Bug #18578]
    ---
     st.c                   |  1 -
     test/ruby/test_hash.rb | 13 +++++++++++++
     2 files changed, 13 insertions(+), 1 deletion(-)

    Fix TAG_THROW through require [Bug #18562]

    Previously this was being incorrectly swapped with TAG_RAISE in the next
    line. This would end up checking the T_IMEMO throw_data to the exception
    handling (which calls Module#===). This happened to not break existing
    tests because Module#=== returned false when klass is NULL.

    This commit handles throw from require correctly by jumping to the tag
    retaining the TAG_THROW state.
    ---
     load.c                      |  2 +-
     test/ruby/test_exception.rb | 21 +++++++++++++++++++++
     2 files changed, 22 insertions(+), 1 deletion(-)

    Do not use `fcopyfile` if appending to non-empty file [Bug #18388]

    `fcopyfile` appends `src` to `to` and then truncates `to` to it's
    original size.
    ---
     io.c                 |  7 +++++++
     test/ruby/test_io.rb | 12 ++++++++++++
     2 files changed, 19 insertions(+)

    An alias can suppress method redefinition warning

    ---
     test/ruby/test_alias.rb | 11 +++++++++++
     1 file changed, 11 insertions(+)

    Fix memory leak at the same named alias [Bug #18516]

    When aliasing a method to the same name method, set a separate bit
    flag on that method definition, instead of the reference count
    increment.  Although this kind of alias has no actual effect at
    runtime, is used as the hack to suppress the method re-definition
    warning.
    ---
     method.h                |  1 +
     test/ruby/test_alias.rb | 18 ++++++++++++++++++
     vm_method.c             |  9 ++++++++-
     3 files changed, 27 insertions(+), 1 deletion(-)

    Assuming EXIT_SUCCESS equals 0 is not portable

    ---
     test/ruby/test_fiber.rb | 6 +++---
     1 file changed, 3 insertions(+), 3 deletions(-)

    `rb_fiber_terminate` must not return [Bug #18497]

    In a forked process from a fiber, the fiber becomes the only
    fiber, `fiber_switch` does nothing as there is no other fibers,
    `rb_fiber_terminate` does not terminate the fiber.  In that case,
    reaches the end of `fiber_entry` finaly, which is declared as
    "COROUTINE" and should never return.
    ---
     cont.c                     |  3 ++-
     eval_intern.h              |  2 +-
     test/fiber/test_process.rb | 15 +++++++++++++++
     test/ruby/test_fiber.rb    |  5 +++++
     4 files changed, 23 insertions(+), 2 deletions(-)

    note that only backported a part of above patch because of incompatibility
    of ruby_2_7.

    thread.c: Convert TAG_BREAK to a normal exception at thread top-level

    [Bug #18475]
    ---
     test/ruby/test_enum.rb | 11 +++++++++++
     thread.c               |  3 +++
     2 files changed, 14 insertions(+)