See issue #11874 for a similar example that caused the segfault
> On 26 Jun 2015, at 1:11 pm, Sheehan Olver <[email protected]> wrote: > > Actually, it turned out that the cause was another faulty convert > implementation, see other thread I started > > I'm filing an issue > > > Sent from my iPhone > > On 26 Jun 2015, at 1:07 pm, Tony Kelman <[email protected] > <mailto:[email protected]>> wrote: > >> What exactly is your code doing? Does it involve mmap? >> >> >> On Thursday, June 25, 2015 at 8:27:34 PM UTC-4, Sheehan Olver wrote: >> Switching to juliadebug, I get >> >> ERROR: ReadOnlyMemoryError() >> >> >> still with no further information. I guess I can manually drill down to the >> offending line? >> >> >> >>> On 25 Jun 2015, at 9:51 pm, Tony Kelman <[email protected] <javascript:>> >>> wrote: >>> >>> If you built Julia from source, do make debug >>> >>> >>> On Thursday, June 25, 2015 at 7:41:26 AM UTC-4, Sheehan Olver wrote: >>> This is on OS X, julia v0.4 master >>> >>> How do I do julia-debug? >>> >>> >>>> On 25 Jun 2015, at 9:06 pm, Tony Kelman <[email protected] <>> wrote: >>>> >>>> Is this in a VM or some other unusual environment? Old hardware? >>>> >>>> What was the context, what were you running? Can you try running the same >>>> code with julia-debug, and/or inside gdb or lldb? >>>> >>>> >>>> On Thursday, June 25, 2015 at 12:08:51 AM UTC-4, Sheehan Olver wrote: >>>> I got the following crash >>>> >>>> signal (4): Illegal instruction: 4 >>>> >>>> unknown function (ip: 0x316f9ff7a) >>>> >>>> Illegal instruction: 4 >>>> >>>> >>>> with no other information given in 0.4 master. I suppose this is a bug in >>>> Julia itself, but without a stack trace it's hard to narrow down. Any >>>> suggestions? >>> >>
