-

(gdb) break collect.rs:1441                                                                                                                                                                               │·
Breakpoint 1 at 0x7ffff647cfd0: collect.rs:1441. (2 locations)                                                                                                                                            │·
(gdb) run src/test/run-pass/trait-alias.rs                                                                                                                                                                │·
Starting program: /home/aburka/rust/vis/build/x86_64-unknown-linux-gnu/stage1/bin/rustc src/test/run-pass/trait-alias.rs                                                                                  │·
[Thread debugging using libthread_db enabled]                                                                                                                                                             │·
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".                                                                                                                                │·
[New Thread 0x7fffedc07700 (LWP 10583)]                                                                                                                                                                   │·
[Switching to Thread 0x7fffedc07700 (LWP 10583)]                                                                                                                                                          │·
                                                                                                                                                                                                          │·
Thread 2 "rustc" hit Breakpoint 1, rustc_typeck::collect::explicit_predicates_of (def_id=...,                                                                                                             │·
    tcx=...) at src/librustc_typeck/collect.rs:1445                                                                                                                                                       │·
1445        let mut index = parent_count + has_own_self as u32;                                                                                                                                           │·
(gdb) p predicates                                                                                                                                                                                        │·
$1 = <optimized out>