[ruby/stringio] Add a comment to explicit RUBY_FL_USER2 |
RUBY_FL_USER3 (https://github.com/ruby/stringio/pull/133) This way when someone removes these flags from Ruby or update them, they'll find this reference when greping. Followup: https://github.com/ruby/stringio/pull/128 https://github.com/ruby/stringio/commit/fad26ee14b
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@ -1868,6 +1868,8 @@ strio_set_encoding(int argc, VALUE *argv, VALUE self)
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if (!NIL_P(ptr->string) && WRITABLE(self)
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#if (RUBY_API_VERSION_MAJOR == 3 && RUBY_API_VERSION_MINOR >= 4) || RUBY_API_VERSION_MAJOR >= 4
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// Do not attempt to modify chilled strings on Ruby 3.4+
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// RUBY_FL_USER2 == STR_CHILLED_LITERAL
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// RUBY_FL_USER3 == STR_CHILLED_SYMBOL_TO_S
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&& !FL_TEST_RAW(ptr->string, RUBY_FL_USER2 | RUBY_FL_USER3)
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#endif
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) {
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