On: Zero size arrays in C

[Koshkin]

I guess the simplest example is struct header { size_t size; char data[0]; }, where 'data' simply labels the beginning of what follows the 'header'.

[Gibbon1 → Koshkin]

I do that all the time, packets come in, packets go out. They have headers and 'data'. A lot of code that deals with the header information does not need to know anything about the data part.