On Tue, Dec 5, 2017 at 3:25 PM, Derek Buitenhuis <derek.buitenh...@gmail.com> wrote: > On 12/5/2017 11:00 PM, Jacob Trimble wrote: >> Also, can I use the flexible array member feature, it was introduced >> in C99? Would a 0-length array be better? > > No, I don't think this would be OK inside a public header, unfortunately.
Would a 0-length array work? Otherwise I would need to have it be a 1-length array and have to account for that when calculating the size to allocate; it would also require a comment to ignore the size of the array. The reason I want it to be an array is because I want a variable number of elements, but I want the data contained in the struct. Since this will be extra data, AFAIK it will only be free()'d, so I can't use pointers or it will leak. Another alternative would be to still malloc more than needed and have the memory past the struct be the array. That seems like a hack, but would allow a simple free(). For example: info = malloc(sizeof(AVPacketEncryptionInfo) + sizeof(AVPacketSubsampleInfo) * num_subsamples); info.subsamples = (uint8_t*)info + sizeof(AVPacketEncryptionInfo); _______________________________________________ ffmpeg-devel mailing list firstname.lastname@example.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel