Backport #8163: Backport r39919

[Narihiro Nakamura]

Please backport r39919 to avoid SEGV in re-defined methods.
see also: https://bugs.ruby-lang.org/issues/8100

[Tomoyuki Chikanaga]

• Priority changed from Normal to High

[Tomoyuki Chikanaga]

I'll also backport r39925 (move related test from KNOWNBUGS.rb) and r39945 (fix ChangeLog indent).

[Tomoyuki Chikanaga]

I've found that with r39919 and r39925 TestMethod#testboundmethodentry wait child process forever because assertrubystatus call invokeruby with capture_stdout=false. I'll add r39905 too.

[Tomoyuki Chikanaga]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r40254.
Narihiro, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

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merge revision(s) 39905,39919,39925,39945: [Backport #8163]

* test/ruby/envutil.rb (assert_ruby_status): include stderr output.   unlinked method entry. [Bug #8100] 

* proc.c (bm_free): need to clean up the mark flag of a free and

[Nobuyoshi Nakada]

• Project changed from Backport200 to Backport93
• Status changed from Closed to Assigned
• Assignee changed from Tomoyuki Chikanaga to Usaku NAKAMURA

[Usaku NAKAMURA]

These patches can be applied to ruby193, but they block testmethod.rb.
I'll check more deeply later...