[squeak-dev] Re: [Vm-dev] Bug 956376 ??? Can not edit class comments

[Eliot Miranda]

On Fri, Apr 26, 2013 at 9:25 AM, Chris Muller <asqueaker at gmail.com> wrote:

> Frank are you saying that, under Ubuntu 13.04, after writing to a
> particular place in a file, if you subsequently go back and _read_
> from that place, even using the same ReadWriteStream instance, that it
> will not read back in what was just written until a #flush occurs?
>
> Hopefully that is not the case!
>

If it is, it is an ubuntu bug and not one we should work around, no?


> On Fri, Apr 26, 2013 at 5:17 AM, Frank Shearar <frank.shearar at gmail.com>
> wrote:
> > On 25 April 2013 15:35, Frank Shearar <frank.shearar at gmail.com> wrote:
> >> On 25 April 2013 13:54, David T. Lewis <lewis at mail.msen.com> wrote:
> >>>
> >>> On Thu, Apr 25, 2013 at 02:18:22PM +0200, Bert Freudenberg wrote:
> >>>>
> >>>> This didn't sound like a VM problem at first, but according to the
> discussion it is:
> >>>>
> >>>> https://bugzilla.redhat.com/show_bug.cgi?id=956376
> >>>>
> >>>> Any idea?
> >>>>
> >>>
> >>> On my 64-bit Linux with an interpreter VM compiled in 64-bit, and using
> >>> Squeak - no problem. With a 32-bit interpreter - no problem. With Cog -
> >>> again, no problem.
> >>>
> >>> I edited the class comment for class Array in each case.
> >>>
> >>> Dave
> >>
> >> "Error: RemoteString past end of file" can indicate a broken/damages
> >> changes file.
> >>
> >> It does when I get the error, at least. Usually that happens when I
> >> have to hard-kill an image that's stored state in the changes file.
> >> Restarting the image means there's a mismatch somehow in the state
> >> between the image and the changes file. Once you get one of these
> >> you're nearly completely hosed: you can't file things out, for
> >> instance.
> >
> > For those not following the Pharo list, it looks like the root cause
> > is that the glibc in Ubuntu 13.04 doesn't immediately write new
> > content out to the file. Thus you can "write" to the file, and then
> > read from the file, only your RemoteString starts off the end of the
> > file. The fix is to make WriteStream >> #nextPutChunk: call "self
> > flush". I've pushed a 4.5 fix to trunk, but have not yet done the same
> > for the 4.4 and 4.3 update streams.
> >
> > frank
> >
>
>


-- 
best,
Eliot
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