merge revision(s) 49b306ecb9e2e9e06e0b1590bacc5f4b38169c3c: [Backport #21333]
[Bug #21333] Prohibit hash modification inside Hash#update block
merge revision(s) 49b306ecb9e2e9e06e0b1590bacc5f4b38169c3c: [Backport #21333]