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[ruby/stringio] Add a comment to explicit RUBY_FL_USER2 |

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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

fad26ee14b
This commit is contained in:
Jean Boussier 2025-05-13 19:15:11 +02:00 • committed by git
parent 96b823a211
commit 9420fc8ad6
1 changed files with 2 additions and 0 deletions
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2
ext/stringio/stringio.c
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@ -1868,6 +1868,8 @@ strio_set_encoding(int argc, VALUE *argv, VALUE self)
if (!NIL_P(ptr->string) && WRITABLE(self)
#if (RUBY_API_VERSION_MAJOR == 3 && RUBY_API_VERSION_MINOR >= 4) || RUBY_API_VERSION_MAJOR >= 4
// Do not attempt to modify chilled strings on Ruby 3.4+
// RUBY_FL_USER2 == STR_CHILLED_LITERAL
// RUBY_FL_USER3 == STR_CHILLED_SYMBOL_TO_S
&& !FL_TEST_RAW(ptr->string, RUBY_FL_USER2 | RUBY_FL_USER3)
#endif
) {