Steps to reproduce the problem:
1. chromium uses version 1.2.5 while the latest zlib version is 1.2.8
2.
3.
What is the expected behavior?
What went wrong?
Version 1.2.8 fixes a very rare bug in decompression. All users are encouraged to upgrade immediately
Version 1.2.7 has many portability improvements over 1.2.6, and has these enhancements:
Fix bug in gzclose_w() when gzwrite() fails to allocate memory
Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen()
Add gzopen_w() in Windows for wide character path names
Fix type mismatch between get_crc_table() and crc_table
Version 1.2.6 has many changes over 1.2.5, including these improvements:
gzread() can now read a file that is being written concurrently
gzgetc() is now a macro for increased speed
Added a 'T' option to gzopen() for transparent writing (no compression)
Added deflatePending() to return the amount of pending output
Allow deflateSetDictionary() and inflateSetDictionary() at any time in raw mode
deflatePrime() can now insert bits in the middle of the stream
./configure now creates a configure.log file with all of the results
Added a ./configure --solo option to compile zlib with no dependency on any libraries
Fixed a problem with large file support macros
Fixed a bug in contrib/puff
Many portability improvements
Did this work before? N/A
Chrome version: 49.0.2623.108 Channel: stable
OS Version: 49.0.2623.108
Flash Version: 49.0.2623.108
refer http://zlib.net/ChangeLog.txt for details
Comment 1 by bugdroid1@chromium.org
, Jun 20 2016