recursive 'mod' crashes compiler

[rossmurray]

Importing a module inside of itself will cause the compiler to abort with no helpful message after some lengthy processing.

Example:

ross@ubuntuvm:~/Documents$ cat rec.rs
mod rec;

ross@ubuntuvm:~/Documents$ rustc rec.rs
Aborted (core dumped)

This example gives a different error:

ross@ubuntuvm:~/Documents$ cat rec.rs
#[link(name = "rec",
        vers = "0.0.1",
        uuid = "a7e9aaa2-921d-47f0-ab61-69b562d7ea1b")];

#[comment = "Test Recursive Import"];
#[license = "CC0"];
#[crate_type = "lib"];

mod rec;

pub fn test() {
}
ross@ubuntuvm:~/Documents$ rustc rec.rs
memory_region::malloc> Out of memory allocating 1050652 bytesAborted (core dumped)

[m10e]

Could this stem from the same bug(s) as #7276 ?

[huonw]

Fixed by 3c5cfdf.