fread return value?

[0xEAB]

On Wednesday, 30 July 2025 at 19:45:20 UTC, Andy Valencia wrote:
> but I'd like to understand what's up before just changing my 
> code to assume 0 is a success value?

AFAICT your code is wrong.
The parameters of `fread()` are `ptr`, `size`, `n`, `stream`.
Your code is attempting to read `1` unit with a size of 
`buf.length`. If the stream has less then a single unit of size 
`buf.length` left, it has obviously read 0 units. Which it 
reports.