On 03.01.2011 00:15, Eliot Miranda wrote: > Hi Martin, Hi All, > > so find new VMs in VM.r2341/ > <http://www.mirandabanda.org/files/Cog/VM/VM.r2341/>. The linux crashes > (certainly the one you suffered from Martin) seem to be caused by an > optimization bug (but they could be caused by bad code generation, > creating something that assumes ordering constraints which C doesn't > guarantee). I suspect the former because I don't see the crash when > running exactly the same VM and image from a different directory; > provoking the crash requires a particular path (go figure; I haven't > pinned this down yet). > > So my "fix" is preventing a complex function being inlined into the main > interpreter loop, removing the sources of some warnings, and lowering > the optimization level of the gcc3x-cointerp.c file to -O1 from -O2 (my > build environment, CentOS Linux 5.3, uses gcc 4.1.2). I'm not proud of > this "fix". I've violated the Deutsch criterion by not diagnosing the > cause of the bug so I can't stand behind this fix; it's a hack that > appears to work and may have merely pushed the real bug further > underground. Alas I don't have time to do a better job. Hopefully it'll > get those of you on linux going again.
That fixes my Linux crash issues. Cheers Philippe
