While looking for ways to find the size of a file given a FILE*, I came across this article advising against it. Instead, it seems to encourage using file descriptors and fstat.

However I was under the impression that fstat, open and file descriptors in general are not as portable (After a bit of searching, I've found something to this effect).

Is there a way to get the size of a file in ANSI C while keeping in line with the warnings in the article?

c file size filesize
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