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avcodec/utils: Avoid undefined void casts in ff_fast_malloc()

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based on code from libavutil/mem.c

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2015-07-11 23:08:08 +02:00
parent b3415e4c5f
commit 59a07df067
1 changed files with 8 additions and 5 deletions
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13
libavcodec/utils.c
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@@ -124,13 +124,16 @@ static void *avformat_mutex;
static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
{
void **p = ptr;
if (min_size <= *size && *p)
void *val;
memcpy(&val, ptr, sizeof(val));
if (min_size <= *size && val)
return 0;
min_size = FFMAX(min_size + min_size / 16 + 32, min_size);
av_free(*p);
*p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
if (!*p)
av_freep(ptr);
val = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
memcpy(ptr, &val, sizeof(val));
if (!val)
min_size = 0;
*size = min_size;
return 1;