unresolved name conflict

[lkuper]

Here's a fun one!

fn main() {

    fn id(int n) -> int {
        // this should have been 'ret n;'
        ret i;
    }

    let int i = id(5);
    log i;
}

This shouldn't compile, and it doesn't, but instead of the expected "unresolved name: i", I get all the way to trans.rs and then get:
upcall fail '.t4410', ../rust/src/comp/middle/trans.rs:3725

Apologies if this is already a known issue -- I didn't see it in a quick look through the issue tracker.

[espindola]

That is an interesting case. My understanding is that it should resolve to the variable in main, but should produce an error about capturing an external variable.

[lkuper]

For what it's worth, for the same program in C

#include <stdio.h>

main() {
    int id(int n) { return i; }
    int i = id(5);
    printf("%d\n", i);
}

gcc gives me:
id.c: In function ‘id’:
id.c:4: error: ‘i’ undeclared (first use in this function)

[espindola]

We now produce the same error as rustboot: attempted dynamic environment-capture