On Fri, Mar 24, 2017 at 4:10 PM, Diego Biurrun <[email protected]> wrote:
> From: Laurent Aimar <[email protected]>
>
> Signed-off-by: Diego Biurrun <[email protected]>
> ---
> libavutil/mem.c | 7 +++++++
> libavutil/mem.h | 12 ++++++++++++
> 2 files changed, 19 insertions(+)
>
> diff --git a/libavutil/mem.c b/libavutil/mem.c
> index 0f506d3..8231431 100644
> --- a/libavutil/mem.c
> +++ b/libavutil/mem.c
> @@ -193,6 +193,13 @@ void *av_mallocz(size_t size)
> return ptr;
> }
>
> +void *av_calloc(size_t nmemb, size_t size)
> +{
> + if (size <= 0 || nmemb >= INT_MAX / size)
size_t is an unsigned type, so you shouldn't need to check for <= 0
> + return NULL;
> + return av_mallocz(nmemb * size);
> +}
> +
> char *av_strdup(const char *s)
> {
> char *ptr = NULL;
> diff --git a/libavutil/mem.h b/libavutil/mem.h
> index f3cf56c..b72692b 100644
> --- a/libavutil/mem.h
> +++ b/libavutil/mem.h
> @@ -210,6 +210,18 @@ av_alloc_size(1, 2) static inline void
> *av_mallocz_array(size_t nmemb, size_t si
> }
>
> /**
> + * Allocate a block of nmemb * size bytes with alignment suitable for all
> + * memory accesses (including vectors if available on the CPU) and
> + * zero all the bytes of the block.
> + * The allocation will fail if nmemb * size is greater than or equal
> + * to INT_MAX.
> + * @param nmemb Number of elements
> + * @param size Size of the single element
> + * @return Pointer to the allocated block, NULL if it cannot be allocated.
> + */
> +void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
> +
> +/**
> * Duplicate the string s.
> * @param s string to be duplicated
> * @return Pointer to a newly-allocated string containing a
> --
> 2.1.4
>
> _______________________________________________
> libav-devel mailing list
> [email protected]
> https://lists.libav.org/mailman/listinfo/libav-devel
--
Vittorio
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
