[FFmpeg-devel] [PATCH] aes: fix array index out of bounds warnings

Måns Rullgård mans
Sun Jul 4 13:24:19 CEST 2010


Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:

> On Sat, Jun 26, 2010 at 12:54:21AM +0100, Mans Rullgard wrote:
>> ---
>>  libavutil/aes.c |    4 ++--
>>  1 files changed, 2 insertions(+), 2 deletions(-)
>> 
>> diff --git a/libavutil/aes.c b/libavutil/aes.c
>> index d3a271c..763f856 100644
>> --- a/libavutil/aes.c
>> +++ b/libavutil/aes.c
>> @@ -130,7 +130,7 @@ int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt) {
>>      uint8_t  log8[256];
>>      uint8_t alog8[512];
>>  
>> -    if(!enc_multbl[0][sizeof(enc_multbl)/sizeof(enc_multbl[0][0])-1]){
>> +    if(!enc_multbl[FF_ARRAY_ELEMS(enc_multbl)-1][FF_ARRAY_ELEMS(enc_multbl[0])-1]){
>>          j=1;
>>          for(i=0; i<255; i++){
>>              alog8[i]=
>
> This part is still relevant I think, and it does not look that much worse
> readability-wise to me, and generated code should be identical...

I agree, though I'm waiting for Michael as don't want to step on
anyone's toes again.

-- 
M?ns Rullg?rd
mans at mansr.com



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