id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
2216	memory leak in calling avcodec_alloc_context3 and then avcodec_copy_context	vinxxe		"Summary of the bug:

in the documentation of the '''avcodec_copy_context''' function is clearly stated that the '''dest''' target codec context should be initialized with '''avcodec_alloc_context3'''.
If you perform this pair of calls, one after the other, the '''avcodec_alloc_context3''' will allocate some memory pointed by the '''priv_data''' field of the codec context (file '''libavcodec/options.c''', line '''128''') through the call of the '''avcodec_get_context_defaults3''' function, but the following call to the '''avcodec_copy_context''' (with '''dest''' parameter set to the newly allocated codec context) will overwrite the '''priv_data''' pointer without deallocating the memory reserved by the '''avcodec_get_context_defaults3''', so causing a memory leak.

How to reproduce:
{{{

   AVCodec  *codec;
   AVCodecContext    *SourceCodecCtx, *DestCodecCtx;

   ...

   DestCodecCtx = avcodec_alloc_context3(codec);
   avcodec_copy_context(DestCodecCtx, SourceCodecCtx);


}}}
"	defect	new	normal	avcodec	1.1.1		leak				1	1