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rustc crash with upcall fail "option none" #1305

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Description

@erickt

I'm getting this exception:

rust: upcall fail 'option none', ../src/libcore/option.rs:34
rust: domain main @0x102029600 root task failed

With this reduced (and invalid) code:

use std;
import std::str;

obj a() {
    fn b() {
        c({ |d| });
    }
}

Activity

  1. added a commit that references this issue on Jun 4, 2024
  2. added a commit that references this issue on Feb 15, 2025
  3. added 2 commits that reference this issue on Aug 21, 2026
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