All recent 0.9 variants and the 1.0 preview.
I noticed that much of its compiles are being done with -O3. I believe other
programs had problems with this as well, that recent gcc/g++ et al are
untested with optimization levels other than 1. Lmms-0.3 is compiling with
-O2. See if that works.
Anybody had the problem? Fixed it?