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Backport #8467

closed

Rewinding and iterating through gzipped IO leads to segmentation fault

Added by vicente.mundim (Vicente Mundim) about 9 years ago. Updated about 9 years ago.

Status:
Closed
Priority:
Normal
[ruby-core:55220]

Description

The following steps reproduce the bug in 2.0.0:

  • Create a file and gzip it in a terminal:

    echo "some content" > compressed_file && gzip compressed_file

Then start a IRB session with the following code:

require 'zlib'
filename = "compressed_file.gz"
io = Zlib::GzipReader.new(open(filename, 'rb'))
io.rewind
io.each {} # segmentation_fault in Ruby 2.0.0

This works in Ruby 1.9.3, 1.9.2, and 1.8.7.


Files

zlib_bug.rb (152 Bytes) zlib_bug.rb File with code to reproduce bug vicente.mundim (Vicente Mundim), 06/01/2013 12:15 AM
ruby_2013-05-31-121414_vm-imac.crash (8.99 KB) ruby_2013-05-31-121414_vm-imac.crash Crash report vicente.mundim (Vicente Mundim), 06/01/2013 12:15 AM
Actions #1

Updated by nobu (Nobuyoshi Nakada) about 9 years ago

  • Status changed from Open to Closed
  • % Done changed from 0 to 100

This issue was solved with changeset r41014.
Vicente, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.


zlib.c: check EOF

  • ext/zlib/zlib.c (gzfile_read, gzfile_read_all, gzfile_getc),
    (gzreader_gets): check EOF. [ruby-core:55220] [Bug #8467]

Updated by nobu (Nobuyoshi Nakada) about 9 years ago

  • Backport changed from 1.9.3: UNKNOWN, 2.0.0: UNKNOWN to 2.0.0: REQUIRED
Actions #3

Updated by nagachika (Tomoyuki Chikanaga) about 9 years ago

  • Tracker changed from Bug to Backport
  • Project changed from Ruby master to Backport200
  • Category deleted (lib)
  • Status changed from Closed to Assigned
  • Assignee set to nagachika (Tomoyuki Chikanaga)
Actions #4

Updated by nagachika (Tomoyuki Chikanaga) about 9 years ago

  • Status changed from Assigned to Closed

This issue was solved with changeset r41073.
Vicente, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.


merge revision(s) 41014: [Backport #8467]

* ext/zlib/zlib.c (gzfile_read, gzfile_read_all, gzfile_getc),
  (gzreader_gets): check EOF.  [ruby-core:55220] [Bug #8467]

* ext/zlib/zlib.c (gzfile_read, gzfile_read_all, gzfile_getc),
  (gzreader_gets): check EOF.  [ruby-core:55220] [Bug #8467]

* lib/cgi/util.rb: All class methods moduleized.
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