On 3 January 2011 00:15, Eliot Miranda <[email protected]> wrote: > Hi Martin, Hi All, > so find new VMs in 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.
Eliot, if you remember, i also had crash issues on linux, and pinned down it to removing optimization from <something>heartbeat.c while keeping gcc3x-cointerp.c to use same optimization flags as for rest of files. I will start coding cmake config for Cog during next week and will be able to check my previous observations again. > best > Eliot > On Sat, Jan 1, 2011 at 11:16 PM, <[email protected]> wrote: -- Best regards, Igor Stasenko AKA sig.
