ftp.ntua.gr:/mirror/gnu/gcc/releases/gcc-4.8.4/diffs/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] gcc-4.8.3-4.8.4.diff.gz                          19-Dec-2014 14:48  2.3M  
[   ] gcc-4.8.3-4.8.4.diff.bz2                         19-Dec-2014 14:47  1.9M  
[   ] sha512.sum                                       05-Feb-2015 23:14  447   
[   ] md5.sum                                          05-Feb-2015 23:14  162
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