Fix dumping StringIO (and potentially others) on Ruby <= 2.7#729
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byroot merged 1 commit intoruby:masterfrom May 12, 2025
Merged
Fix dumping StringIO (and potentially others) on Ruby <= 2.7#729byroot merged 1 commit intoruby:masterfrom
StringIO (and potentially others) on Ruby <= 2.7#729byroot merged 1 commit intoruby:masterfrom
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In Ruby < 3.0, the superclass of StringIO was actually already `Data`, but it doesn't have the expected shape. So, on these earlier versions it errors: > NoMethodError: undefined method `members' for #<StringIO:0x00005641dd5f2880> > vendor/bundle/ruby/2.6.0/gems/psych-5.2.5/lib/psych/visitors/yaml_tree.rb:170:in `visit_Data' This test doesn't fail on 2.7, presumably because it can pull in a newer `stringio` version.
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In Ruby < 3.0, the superclass of StringIO was actually already
Data, but it doesn't have the expected shape. So, on these earlier versions it errors:This test doesn't fail on 2.7, presumably because it can pull in a newer
stringioversion.Some context: https://bugs.ruby-lang.org/issues/3072
Here's a test failure before the fix: https://github.com/Earlopain/psych/actions/runs/14976611657/job/42070451324