[#68478] Looking for MRI projects for Ruby Google Summer of Code 2015 — Tony Arcieri <bascule@...>

Hi ruby-core,

10 messages 2015/03/10

[ruby-core:68494] [Ruby trunk - Bug #10961] [Open] Zlib corrupts data when receive signal

From: leiting@...
Date: 2015-03-11 08:15:56 UTC
List: ruby-core #68494
Issue #10961 has been reported by Lei Ting.

----------------------------------------
Bug #10961: Zlib corrupts data when receive signal
https://bugs.ruby-lang.org/issues/10961

* Author: Lei Ting
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 2.0.0-p353 2.2.0
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
When receiving signal on main thread, Zlib::Deflate.deflate will be interrupted in zstream_run_func (zlib.c), thus producing unfinished output buffer.

Zlib::Deflate.deflate will return normally, without error, but the return value will be corrupted buffer and can't be decompressed.

Preferred fix: zstream_run() should check if err is Z_STREAM_END, if not, raise an error instead of return normally.

---

run zlib.rb to reproduce this problem:

# ruby zlib.rb
37028
generating len=1000000000 string...
string length=1000000000
compressing...
^CINT (press Ctrl+C or send a signal to the pid)
zlib.rb:13:in `deflate': data error (Zlib::DataError)
        from zlib.rb:13:in `test_string'
        from zlib.rb:25:in `block in <main>'
        from zlib.rb:25:in `each'
        from zlib.rb:25:in `<main>'

---Files--------------------------------
zlib.rb (646 Bytes)


-- 
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