array.c: always check frozenness in Array#unshift. Fixes [Bug #15952] Closes: https://github.com/ruby/ruby/pull/2251 array.c add back shared array optimization to ary_ensure_room_for_unshift Bug fix in commit ec8e5f5aa64e2a [Bug #15952] disabled an optimization in this function. Closes: https://github.com/ruby/ruby/pull/2252
Added by nagachika (Tomoyuki Chikanaga) over 6 years ago
merge revision(s) ec8e5f5aa64e2a54cf1e303f2b012c98e8d521ba,5a187e26adc8aa32367f294c1496935c7356d386: [Backport #15952]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67740 b2dd03c8-39d4-4d8f-98ff-823fe69b080e