mirror of
https://github.com/rust-lang/rust.git
synced 2025-12-08 03:12:21 +00:00
1cb57e2d2b
Help optimize out backtraces when disabled The comment in `rust_backtrace_env` says: > // If the `backtrace` feature of this crate isn't enabled quickly return > // `None` so this can be constant propagated all over the place to turn > // optimize away callers. but this optimization has regressed, because the only caller of this function had an alternative path that unconditionally (and pointlessly) asked for a full backtrace, so the disabled state couldn't propagate. I've added a getter for the full format that respects the feature flag, so that the caller will now be able to really optimize out the disabled backtrace path. I've also made `rust_backtrace_env` trivially inlineable when backtraces are disabled.