[Vorbis-dev] Use of alloca in vorbis_comment_add_tag

[Ralph Giles]

On 2015-10-12 12:04 PM, Robert Kausch wrote:

> Please consider using _ogg_malloc/_ogg_free in place of alloca in 
> vorbis_comment_add_tag. alloca will cause undefined behaviour/crashing 
> when it causes a stack overflow which can easily happen when adding 
> cover art in a METADATA_BLOCK_PICTURE comment.

Thanks for the report. I've done a quick fix. Please test.

https://git.xiph.org/?p=vorbis.git;a=commitdiff;h=c75b3b1282de1010883aa1391bc8ea31dc8ac98e

 -r