On 30 Apr 2013, at 01:44, Brian Geffon wrote:

> Hello All,
> I think we have a major flaw in first_write_block() in MIOBuffer, the
> comment and code are the following:


Ref: thread on this list about a week ago,
"TS API won't return header data of > 4K".
Your patch looks right, but then so did mine.

If that thread was your startingpoint and you've addressed the
issues raised there, ignore the rest of this. 

It not ....

There are several instances of similar logic there.
I recently 'fixed' one in MIOBuffer::fill using essentially the same
logic as yours, only to find side-effects.  Bottom line seems to be,
yes you can and indeed must move _writer and lose its previous
block in certain operations.  You'd better have a reader already
allocated or you'll never again see that block!

-- 
Nick Kew

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