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

[Frank Shearar]

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