static int MP4_ReadBox_stsz( stream_t *p_stream, MP4_Box_t *p_box )
{
unsigned int i;
MP4_READBOX_ENTER( MP4_Box_data_stsz_t );
MP4_GETVERSIONFLAGS( p_box->data.p_stsz );
MP4_GET4BYTES( p_box->data.p_stsz->i_sample_size );
MP4_GET4BYTES( p_box->data.p_stsz->i_sample_count );
p_box->data.p_stsz->i_entry_size =
calloc( p_box->data.p_stsz->i_sample_count, sizeof(uint32_t) );
if( !p_box->data.p_stsz->i_sample_size )
{
for( i=0; (i<p_box->data.p_stsz->i_sample_count)&&(i_read >= 4 ); i++ )
{
MP4_GET4BYTES( p_box->data.p_stsz->i_entry_size[i] );
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
[Switching to process 587 thread 0x6403]
0x027f080b in MP4_ReadBox_stsz (p_stream=0x4a6198, p_box=0x4a74d0) at libmp4.c:1460
1460 MP4_GET4BYTES( p_box->data.p_stsz->i_entry_size[i] );
Solution: check calloc return values. Note: for Mac OS X, in debug builds to see the null deref you need to make sure that the MallocErrorAbort?? environment variable doesn't get set. I did that by just hex-editing the VLC executable and changing MallocErrorAbort?? to MallocErrorAborA.
