[Issue 5251] Const C file

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5251



--- Comment #3 from Steven Schveighoffer <schveiguy at yahoo.com> 2010-11-22 10:11:55 PST ---
const is transitive, so if you imagine a FILE having this structure:

struct FILE
{
   int fd;
   ubyte[] buffer;
}

Now, if FILE is const, then buffer is const(ubyte[]), so how does fprintf write
to that buffer?

What you are looking for is head-const (the variable cannot change, but
everything it points to can), which has some good uses, but does not exist in
D.

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