[Theora-dev] Invalid read of size 1...
heavensdoor78 at gmail.com
Fri Oct 28 06:42:49 PDT 2005
> I noticed some things:
> - if I encode images programmatically generated (like in the last app
> I posted here in the ML...) my debugger says it's all ok (no errors)
> - if I grab a simple image ( I put a paper in front of the video
> camera :) ) the Invalid read's message I reported above is fired
> little times (sometimes also 0)
> - if I grab an image ( of the room ) the Invalid read's message I
> reported above is fired many times ( variable )
Looking in the debugger output the buffer subject of the Invalid read'
is in the file pp.c row 139:
sizeof(*ppi->ChLocals) * CHLOCALS_CB_ROWS);
If I change this lines in:
sizeof(*ppi->ChLocals) * CHLOCALS_CB_ROWS + 2);
memset( ppi->ChLocals, 0,
CHLOCALS_CB_ROWS + 2 );
The debugger says it's all ok
(there's a small memory leak because of ppi->ChLocals++ , free is
trying to free the next byte, ignored for my test of course)
So it seems the problem is with this buffer, and not only a reading of 1
byte before the beginning but also a readinf of 1 byte after the ending...
I tryed to allocate only 1 more byte for ppi->ChLocals , with and
without ppi->ChLocals++ ( to get a boundary byte before and then a
boundary byte after )
Hope it could help...
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