Bug#818037: vorbis-tools: vcut always(?) segfaults

Frank Heckenbach f.heckenbach at fh-soft.de
Wed Mar 16 14:39:05 UTC 2016


> I debugged it and found the problem. It was a simple indexing problem
> that seemed to have slipped away during quite some time because of a 
> lucky memory layout: The pointer resulting from the wrong indexing 
> points to the stack and therefore to valid memory (in terms of memory 
> management), unless the block is too big. Now the memory layout has 
> changed for some reason (GCC 5?), therefore we read a different value as 
> block size, the block is too big for the stack and we get the 
> segmentation faults.

Not GCC 5, jessie still uses 4.9.2 (and I tried rebuilding it
myself, same bug), but anyway.

> The patch is in the git repository.

Where can I get it (just the patch, so I can try it against the
jessie version)?

https://git.xiph.org/ says:
vorbis-tools.git ... Last change 5 months ago

Regards,
Frank



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