diff options
| author | nagachika <[email protected]> | 2025-03-16 20:10:00 +0900 |
|---|---|---|
| committer | nagachika <[email protected]> | 2025-03-16 20:35:27 +0900 |
| commit | f85e5e01bafeca387e833b9d79cab43a8b22aa3d (patch) | |
| tree | a26f003a3429f51036b052d78d352a301c7b95fc /test | |
| parent | 2b2ab1a67c236eb0c47e63e8adcf877b0d20a38c (diff) | |
merge revision(s) f423f6e10c0c226dfed98e7cb7a5d489191dfa35: [Backport #21131]
Ensure IO.copy_stream buffer is an independent string
Otherwise, changes to the buffer by the destination write method
could result in data changing for supposedly independent strings.
Fixes [Bug #21131]
Diffstat (limited to 'test')
| -rw-r--r-- | test/ruby/test_io.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb index 51c9f2b83c..16de2e8a76 100644 --- a/test/ruby/test_io.rb +++ b/test/ruby/test_io.rb @@ -1116,6 +1116,34 @@ class TestIO < Test::Unit::TestCase } end + def test_copy_stream_dup_buffer + bug21131 = '[ruby-core:120961] [Bug #21131]' + mkcdtmpdir do + dst_class = Class.new do + def initialize(&block) + @block = block + end + + def write(data) + @block.call(data.dup) + data.bytesize + end + end + + rng = Random.new(42) + body = Tempfile.new("ruby-bug", binmode: true) + body.write(rng.bytes(16_385)) + body.rewind + + payload = [] + IO.copy_stream(body, dst_class.new{|cls| payload << cls}) + body.rewind + assert_equal(body.read, payload.join, bug21131) + ensure + body&.close + end + end + def test_copy_stream_write_in_binmode bug8767 = '[ruby-core:56518] [Bug #8767]' mkcdtmpdir { |