Bug#244608: further info

I can indeed confirm that this is a compiler optimization bug, recompiling mpeglib with -O0 fixes the problem. Still investigating exactly which optimization is causing the bug so a report can be filed against g++. Just in case anyone's interested, the quickly-hacked -O0 deb I'm using is here:

Bug#244608: To further illustrate the point

I captured the output of the same 30 seconds of audio from Noatun/arts/mpeglib and also from mpg321/libmad, then encoded them with FLAC. Available here: http://www.marm.org.uk/mpeglib-decode-bug-mad-output.flac http://www.marm.org.uk/mpeglib-decode-bug-mpeglib-output.flac -- marm

Bug#244608: distorted decoding of mp3s since mpeglib 3.2.2-1

Package: mpeglib Version: 4:3.2.2-1 Severity: important Tags: sid Since upgrading to mpeglib 3.2.2-1, decoding of mp3s using mpeglib sounds dreadful, full of strange MPEG artifacts. Version 3.2.1-1 works perfectly, as do players built around other MP3 decoders (e.g. XMMS, mpg123, mpg321). Given