Bug #17738: Ruby can still freeze ENV

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin20]
• Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN

[kachick (Kenichi Kamiya)]

After https://bugs.ruby-lang.org/issues/15920 and https://github.com/ruby/ruby/commit/f53d7e4bfd604be6f8131c5460c29f4af16da117, ENV.freeze raises TypeError.
But we can still freeze ENV as below.

Kernel.instance_method(:freeze).bind(ENV).call()
p ENV.frozen? #=> true

This loophole should be ignored?

[marcandre (Marc-Andre Lafortune)]

I believe so, yes.

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Rejected