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Bug #17661

closed

IO#each will segfault when if file is closed inside an `each_byte` block

Added by tenderlovemaking (Aaron Patterson) over 4 years ago. Updated over 3 years ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
Backport:
2.6: UNKNOWN, 2.7: REQUIRED, 3.0: DONE
[ruby-core:102634]

Description

As reported here: https://twitter.com/asterite/status/1363487990203506689 when iterating through a file's contents with #each_byte, if the filehandle is closed inside of the block yielded to by #each byte, this condition is not detected, and a segmentation fault is thrown.

Repro:

file = http://File.open(__FILE__)
file.each_byte do |byte|
  p byte
  file.close
end

Proposed fix is here: https://github.com/ruby/ruby/pull/4217

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