---- util::loom stdout ----
thread 'util::loom' panicked at '
Causality violation: Concurrent write accesses to UnsafeCell.
created: /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/ops/function.rs:150:5
write two: thread #1 @ src/util.rs:29:35
', /Users/kvark/Code/loom/src/rt/location.rs:115:9
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
I'm confused about the error message. It says there are concurrent write accesses, so I would expect callstacks from 2 writes. Instead, it points to how the cell was created, and points to one of the writes. Where is the other one?
I'm confused about the error message. It says there are concurrent write accesses, so I would expect callstacks from 2 writes. Instead, it points to how the cell was created, and points to one of the writes. Where is the other one?
Repro by doing
cargo test --features loomon https://github.com/kvark/choir/tree/loom-unsafecell-error