Bug #21159: `Module#set_temporary_name` should freeze given name

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED, 3.4: REQUIRED

[ko1 (Koichi Sasada)]

I think it is preferable to freeze the name.
So #set_temporary_name should copy and freeze the name string.

c = Class.new.set_temporary_name(str = +'<c>')
p c          #=> <c>
str.upcase!
p c          #=> actual: <C>
             #=> expected: <c>
p c.name.frozen?
             #=> actual: false
             #=> expected: true

From the Ractor's aspect, shareable modules should refer only immutable string.

[nobu (Nobuyoshi Nakada)]

• Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN to 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED, 3.4: REQUIRED

https://github.com/ruby/ruby/pull/12819

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|931ac960b6d11937364b6c4e847fdd575ee67980.

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[Bug #21159] module names should not be modifiable