(In reply to Bernhard Wiedemann from comment #45) > I found my debugging note from/before 2020-06-29: > > PGO again via ASLR, filesys, date > > https://build.opensuse.org/request/show/676711 made it reproducible back then > and looking closer at old results, > 3.5.2 was the first one marked to differ > https://rb.zq1.de/compare.factory-20200303/bison-compare.out > > Here is the general description of the problem of PGO with reproducibility: > https://github.com/bmwiedemann/theunreproduciblepackage/tree/master/pgo > > Would disabling PGO for bison be an option? No! I do not wish to damage speed and/or optimized size of binaries because of this.