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A couple of things to fix, notably that we relied on the stream returning strings and relied on it not lying about how much was being written. Now we no longer trust either and we verify instead. Co-authored-by: Sutou Kouhei <kou@clear-code.com>
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We need the same change in Ruby because Ruby has a custom |
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Jul 16, 2026
This is the same change in ruby/prism#4172 . Ruby has a custom `pm_source_stream_fgets_t` for stdin. We should apply the same change to `pm_parse_stdin_fgets()` to avoid reading `size` or more data.
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A couple of things to fix, notably that we relied on the stream returning strings and relied on it not lying about how much was being written. Now we no longer trust either and we verify instead.
Supersedes #4160