rustc stack overflow on type of infinite size.

[koute]

struct Foo { x: Option<Foo> }
fn main() { ~Foo { x: None }; }

results in:

$ rustc crash.rs 
task 'rustc' has overflowed its stack
Illegal instruction (core dumped)

rustc 0.9 (ff7ecca 2014-01-10 08:26:24 -0800), GNU/Linux x86_64

[pnkfelix]

Wild guess: Is the fix for #742 specific to enums alone, and needs to be generalized to cover structs too?

[pnkfelix]

mm looks like a likely dupe of #4218 (and I guess #4363 though the similarities are a bit more obscured there).

[alexcrichton]

Closing as a dupe of #4363 (I think we're hanging most "recursive struct causes stack overflow" bugs off of that one